Welcome back to Fret Buzz The Podcast. In
today’s episode, we get into part 2
with Miles Harshman all about mods for
the guitar, amp and pedals. First we
reveal the mystery roommate… ??? …and
then we get in to modding the guitar a
little bit …and then we dive pretty deep
into modding amps, all about tubes and
tubes versus solid-state, rectifier tubes,
and we get into a pretty deep discussion
about biasing. The HUGE dangers of poking
and prodding around inside of an amp. …and
then we get into the big subject of
capacitors at the end …and wrapping it
all up, Miles lets us know what his
upcoming 2019
plans are. I will say really quick, head
on over to iTunes, give us a review. Visit
us over on fretbuzzthepodcast.com and
here we go! Thanks for listening!!!
Who was your roommate Miles???
Adam Neely – it’s very weird he’s got like
this YouTube channel and I’m squishy
wife you’re watching this you probably
have probably heard of Adam Nev yeah
that guy was my roommate that’s craziest
ha world yeah first year at Berkeley I
remember moving into the dorms and he
was on his bunk bed reading hee hee
now he’s giving TED talks yeah now just
give a TED talks and then I can just
tell you he was just too smart back then
as he is now yeah I mean this easily one
of these smartest people I ever met at
that school I mean everybody everybody
knew knew Adam Neely just because I mean
it’s happening like right guy guy can
play piano just as well as he plays bass
Angie did both upright and electric yeah
he didn’t get to studied at Berkeley
doesn’t let you study both upright and
electric but he can still do both that’s
that’s that’s an accomplishment in
itself yeah then yeah just watch him
play that’s bizarre that they won’t let
you know
all of it sounds like Berkeley lets you
do anything and every time een they’ve
got so many different ensembles and
special things it’s strange that they
wouldn’t let you study both I mean kind
of in a way yes but like the both are so
demanding and so different that like you
would probably get carpal tunnel if they
tried to make you like do their
curriculum in like four years
for either/or because they have like a
whole curriculum for your instrument
like you know if you’re guitarists they
have classes just for guitar and for
like electric bass they have just the
classes for electric bass so you don’t
have the time you don’t you didn’t have
the time I think that’s kind of mostly
your thing is just that like you just
won’t have the time yeah I mean there’s
just so many classes at that school yeah
that’s what I was getting from : and
obviously now from you miles is just
there’s so many options that at Berkeley
it’s just it’s almost overwhelming yet
sometimes it is overwhelming like I
remember the first semester looking
through the course menu was kind of like
looking through I don’t know like
musicians friend catalogue right you
turn the page and it’s like I see this I
want this like I want to take that class
I want to take this class I want to take
this class I think I made an entire
schedule of like electives that I wanted
to take only to realize oh there’s like
required stuff like ear training and
music theory you know the jazz theory
and the classical theory and conducting
and arranging and oh and I have to take
an English class know that this is lame
like say I was like left with like three
spots for electives right but I I could
have filled up the whole my entire
schedule with like 10 or 12 of them yeah
it’s kind of unfortunate that you miss
out on so much you know there’s so many
things that you want to take and yeah
you have to yeah there’s only so there’s
only so many hours in the in the day
yeah you know and even like towards the
edge of my my time there when my
schedule was much more free it was still
like I don’t have the time in the day to
like take all this sir
just the the times that they would have
for the classes just wouldn’t work out
so even if you really want to take a
class there might be only like two
meetings of it and it’s during the time
that your other required classes have to
me right you just got to miss out yeah
competing classes or something which one
yeah yeah sometimes that or sometimes
even at Berkley they they have a rating
system and so you need to be a certain
level to take certain classes right
joint Stern ensembles so if you’re not
like a six like you know you’re gonna do
you’re gonna you’re gonna fail right
there it’s gonna be really hard Mike and
all the classes that I took that had a
requirement like yeah definitely I
definitely would have failed if I didn’t
have you know this thing under my belt
alright alright so getting baddack into
modding we’ve talked a little bit about
guitar I’d like to talk a little bit
about like pedals and amps because I
think that’s another area where a lot of
people kind of have a lot of questions
on in terms of what that exactly means
in terms of modding if somebody gets
something modded a lot of people I know
about a young age when I was playing
when I heard somebody was getting their
amp modded or something like that I was
just always like I know that’s a thing
but I have no idea what that means so
I’m sure that there are a lot of people
out there who would like to kind of get
an idea of what that world means in
terms of yes obviously am also starting
with pedals
ahmad sir I mean they’re just really
your way to just try and get new sounds
from what you already have I mean for me
it was mostly just in the beginning like
I guess the series parallel switches and
then even some I guess like tone caps
just changing like the cap that’s the
capacitor that’s connected to your tone
knob that’s kind of where my venture and
Ahmad started but yeah once you kind of
learn a little bit how oh well if you
just change this one thing here and one
little thing there you get kind of a
really different sound you know anyone
has just changed their pickups this
figured that uh probably you’re just the
simplest thing you can do to your amp
has changed the speaker sometimes even
from like some amp techs that’s like the
first mod they would suggest it’s just
change just change the speaker and you
might find something you like right that
like totally fixes everything yeah
one of the most scent warm one of the
more simpler things that you could do is
junior speaker channels – negative –
yeah definitely yeah yeah very much so
but yeah well then you start getting
into the guts of it you start to talk
about capacitors and resistors oh yeah
yeah so I I guess I kind of built this
amp so it’s pulling it out so I can kind
of show you underneath so it’s marble
mm-hmm so you see underneath here some
extra draw holes and stuff I got some
switches so like these I added some fat
switches so I can have a channel
independent fat switch for either
channel channel 1 to channel 2 this is
uh like modding the distortion stage in
the jcm800
so I can be like jcm800 or like 150 150
or something high gain or whatever and
what else I put in I think if I show you
there’s a master volume
burn your finger if you touch the power
tooth right back there and gosh I did so
much to this thing when we flip the
camera around this was probably the
coolest mod I did to this amp in my
opinion that changes the tone stack from
like fender Vox to Marshall so yeah I
mean Aaron heard this that really
changes where the mid frequencies yeah
or lined up so you know you’re you put
it up here and it’s got like kind of a
bass many sounds put it in the middle
and it really scoops the hell out of it
like your typical fenders and Marshalls
or vendors and boxes and then the last
one is your Marshall tone stack and
that’s def what sends the most Marshall
e it’s even got like some volume kick to
it so yeah pushes it extra hard and yeah
that was the samp was just kind of
basically my attempt to make an easily
model jcm800 /g 1845 sounds like you
spent much more time working on the
Hampton playing which yeah well this
thing yeah definitely like I put that
guitar together I don’t know in like a
couple days
this thing was got an annoying AM an
annoyingly long about of designing
because I didn’t want to just copy some
one circuit and also no one has kind of
done what I did in a way but also what I
did was just kind of hard or at least
the one issue I have is that when I
change channels there’s a loud audible
pop yeah like boom pop I mean it’s not
the worst but I mean it’s noticeable so
it’s you were in a band you would
probably think was that an extra kick
drum or did he just the drum would be
like did I just hit the snare like not
hit the snare or you know like and I
realized that that’s something that like
Randall Smith of Mesa is like
to design around and that’s kind of why
his amps kind of command such a high
price he’s got some patents to help him
get rid of this pop and do all sorts of
other crazy stuff inside some of it’s
not even crazy it’s just it’s like
simple mods but a guy got to the Patent
Office before everybody else so that’s
why you don’t see a rectifier switch on
any any amplifier see fun fact
what is the rectifier switch do it
changes the how the amp is rectifying
the AC to DC so your power transformer
takes the 120 volts AC and turns it into
a couple different voltages like six
volts for the heaters probably 50 volts
for the bias voltage and then the 330
volts for the power tubes and running
everything else the main power the main
power source so you go from 120 volts AC
to about 330 volts ac and then after
that you need to rectify it so to go
from AC to DC just like the band
alternating current to direct current
and from that that DC power is
everything in the amp so solid you can
have two different ways of rectifying
the amp and one would be the old-school
valve way if you have a valve rectifier
or tubes yes and then you could also
have a solid-state rectifier which means
that you’re using diodes and Sobe each
has their different kind of feel even
though they both do the same thing the
tube rectifier kind of behaves in a
different way that kind of has more of
that give that we’ve been talking about
that were that we were talking about
earlier when the amplifier kind of gives
up when you’re hit it really hard or
you’re just playing loud and that seems
to have not that immediacy and based
response the capacitor is feeding that
stage knock capacitor
the rectifier is feeding that capacitor
at that stage and whether you have a
tube rectifier or a solid-state
rectifier will really change the feel so
like anna jcm800 you would want to have
a solid-state rectifier for that
immediacy for the output stage because
it’s trying to be driven so hard but say
in like a GM 45 endo I don’t have it in
this like you might want the tree
rectifier because it just kind of lends
itself to feeling what I guess what we
call spongy it’s the word it was
probably wanted to use earlier hmm
yeah that’s just that where it feels
like it’s giving in and yeah that’s just
it’s a simple switch of just changing
where the electricity is going to and
from but it is a patent in the United
States Patent Office
so Mesa right it’s so simple but patent
there you go actually did a I did a
project back in school you know this is
like musical technology class looking at
the difference between tubes and diodes
and it it’s kind of cool the the best
analogy I heard was somebody comparing
it to a like a check valve in the
plumbing system and exactly like
essentially got AC current coming in
which is going back and forth like it
the speed of electricity like superfast
being like yeah and when it hits either
the to like a tube it actually lets the
electricity those electrons go through
and it they jump from the from whatever
one part is to the plate on the other
side yeah from the cathode to the plate
and yes an inner tube there’s something
called a screen grid that kind of is
like the big gate in between to control
how much electrons make it to the plate
from the cathode yeah
so instead of like a back and forth it’s
just like pulses in one year yeah so in
a tube it’s like there’s like an input
and then they say it’s kind of weird to
look at it like there’s an input and
output but because where the output is
it’s also where you apply the tons of
voltage so you have like a cathode
that’s tied to ground somehow the screen
grid which is where your signal comes in
and also somehow is helping you kind of
bias the tube in some way which is like
basically controlling how on the tube is
how loud that signal is going to be how
much of its going to come through that’s
basically what that is so yeah it’s of a
diet going back to the tube versus diode
like the diode does the same thing but
through that little tiny electrical
component the diode goes kind of like a
vacuum tube it’s kind of like a one-way
gate where there’s no screen so it’s
just allowing a voltage in this case to
go in one direction and not come back
the other direction yeah yeah so it’s
like a one-way game in that sense but
our tubes are kind of like a gate that
we can control with voltage and then
that’s kind of what transistors became
as well it’s all really is there a
distinct difference between the diode
versus the tube in terms of rectifier a
difference in just that well the the
tube rectifier will absorb some voltage
so you’ll get what we call voltage drop
and you’re just gonna it’s just gonna
take away like 40 or 30 or depending on
the tube you’re just gonna lose some
voltage so in that sense not only are
you just having a tube rectifier but
which has limits on how big that reserve
capacitor can be which is that immediacy
sponginess we’re talking about right but
also just where the voltages for the
plates of the power tubes and that’s
kind of like
you know if are we just turning the
volume up or down a little bit like one
thing that tweed amps are famous for is
having low plate voltages meaning the
amp despite it being say like turned all
the way up the tubes aren’t running as
hot as they could be so they will start
to overdrive quicker right so that’s
kind of where we could say it has a
browner sound because the plate voltage
supplying the tubes is really low and
saying your Hot Rod deluxe that thing
that’s a super clean or that twin that’s
also super super clean that plate
voltage is really really really high in
both of those amps it’s almost as high
as it possibly can be so those tubes are
amplifying as loud as possible and as
clean as possible
Wow and so by Browner sound you mean
like brown Fender Brown face versus a
no-knock pacer not brown face no Brown
is in like brown is I guess like that
the the breakups that we’re talking
about that that breakup occurs suing
there when we have an amp that has a
lower voltage so I give that Brown would
just be like an obit term for like to be
warm and some old guys would kind of
refer to that breakup is kind of a brown
or sound okay well you don’t have any
Headroom it just kind of sounds a gnarly
I’m good I haven’t heard that but I’m
gonna start using it okay it’s good term
I mean so let me just ask you your
Princeton Reverb does it have a
rectifier tube I believe it does I’m
sorry I ma’am need to refer to some
schematics here for a second but uh okay
so give me a second here Rick your chart
because I can tell you to substitute a
tube and you’ll be able to hear the
brownness just switching back and forth
just by sorry yeah yeah no just just
watching these two rectifier tubes will
change the plate voltage to your to your
power tubes and you’ll be able to hear
that okay like my tubes running at this
voltage definitely sounds a hell lot
cleaner than this other voltage would
you say it was a r4 it’s a five air for
okay yes so that’s that is only dropping
ten volts from the main voltage supply
so it’s not a whole lot so it’s not it’s
not dropping a lot that doesn’t mean
that you won’t have sponginess it just
means that the the transformer it’s
design for the voltage that it’s
supposed to get you’re getting very
close to that if you put in a this
should still work if you put in a 5v
four you would get 25 volts drop instead
of 10 so you would you would hear a
little more trying to remember is
Princeton one of those fender amps that
runs fender was it’s kind of notorious
for running tubes at really really high
voltages and I think your Princeton
might be one of them I know the deluxe
is like a deluxe is actually running its
tubes hotter than they should be like
design-wise it’s like a wonder that they
don’t blow up right but yeah like I
don’t know why fender did this I guess
just to get as much volume as possible
but you said fender Princeton reissue
yeah it’s a 60 68 reissue mr. if I was
to switch that out I’m essentially gonna
get more breakup but less clean Headroom
yeah it’s just gonna happen sooner and
then also not only would it happen
sooner but you just might notice a
slight reduction in overall volume not a
lot not like cut it in half but like
sadly
you know just a couple percent maybe
perceived so on how just from me like
I’m tomorrow night for New Year’s Eve
I’m playing in a jazz quartet for a
pretty big room and I think I’m gonna
bring my hot rod
just because I’m worried about volume
like we’re not gonna have a full sound
guy so I need the clean Headroom yeah
with with my Princeton for recording I
do want it to break up sooner cuz I it’s
just a lot easier on my ears to sit
there and not blast myself I don’t have
like a separate closet to put the amp in
but is that something I could I could
get that 5v4 tube and just switch it out
if I was gonna go in the studio or
record yeah yeah you just be able to
switch it in and out it’s actually one
of the tubes that you could kind of
replace it while the amp is on you might
like pull it out well I mean in the
first couple of minutes before it gets
you know lightning hot yeah you could
take it out and put it in no no wouldn’t
really hurt anything because it’s at a
strategic point in the amplifier so
could you do that and you don’t you
don’t need to re-buy us or you don’t
have to do anything else you just
literally switch out the tube oh yeah
and that’s case yeah because you’re
going from higher voltage to a lower
voltage so yeah you wouldn’t really need
to rebuy us if you’re going the other
way around you maybe would worry a
little bit if you didn’t have enough
bias voltage is that problem I would be
switching back to the other but I mean
you could you could definitely set up
your amp to take both and and not have
to worry about it there’s definitely
like a middle ground you could find
where you have two tubes and no matter
what your amp is always gonna be biased
well I mean if anything putting in that
tube with the lower voltage would be
saving your power tubes does he get
longer life yes
so yeah 66 is are only supposed to take
like four hundred volts max and it looks
like in a Princeton they’re already
sitting at four
ten okay and a in a deluxe they’re like
sitting at 425 and then of course when
you front signal through it that makes
the voltage go up and down right okay
because you’re sick you’re signal as an
alternating current and that makes the
voltage go up as well as go down that’s
kind of that immediacy we were talking
about when that voltage goes down is the
capacitor that the rectifiers feeds
large enough to kind of give it back
soon enough hmm so and if it’s a small
capacitor then yeah that’s we really
feel it give in like on your Princeton
or the smaller older amps they’ve just
got small Y capacitors so when you try
and make them amplify those sucked tons
of voltage out and there won’t be as
much right behind it to fill it back in
wow that’s that’s that sponginess so is
some rebuy seing an amp I mean to me
that’s always been this kind of at least
with my tube amp so there’s all this
stuff about like don’t touch anything in
there you could get electrocuted even if
it’s not good then I was just gonna say
everything out there don’t just start
prying and plugging yeah there’s there
is I can tell you I have touched the 280
volt source and I’m very glad there was
some current limiting resistors in my
way otherwise I might not be here right
or or at the very least I might have
nasty burn on my hand yeah because I
could tell you to 280 volts does not
feel fun it is a very weird experience
but yes so there’s definitely a danger
still lurking inside your amp probably
when it’s off that voltage is stored in
capacitors and things like that
it’s capacitor is basically like a
battery you can think of it as like a
battery because I mean what is the
battery a battery provides DC and that’s
what this capacitor is it’s you’re just
charging it up so it provides
DC so with all this you know if I was
is rebuy Seng your amp something that an
amateur person could do um every amp
Tech is screaming at the screen right
now no don’t tell them they can bias
their amp but I mean yes you can bias
your amp it’s you’re not going to kill
it I mean most amps have a bias circuit
inside that will not allow you to kill
your amp you know unless it’s an amp
that has like the ability to do both a
el34s
and 6l sixes
unless it has that it probably doesn’t
have a bias circuit that’s gonna like
you know damage it should you twist that
bias knob all the way in one direction
or the other
open up your Hot Rod deluxe you see that
blue knob in there for biasing it when
you turn that knob you’re like setting
the the idle current going to the tubes
which is kind of just like how on are
they and if you turn it down your amp
will get lower in volume lower in
Headroom and would sound different and
different maybe that’s bad maybe that’s
good that’s the third point it’s
personal preference like I’ve got that
book by Gerald Weber and though he says
yes there’s like proper voltages to be
had with biasing at the certain point
it’s kind of like just to your ear you
know do you like it when it sounds cold
biased you like it when it sounds hot
biased neither is you know bad for the
amp it’s just kind of how you want it
set now you can definitely set it in a
manner where you would be hurting your
amp it’s not just the tubes like
limiting your tube life but most amps
don’t allow you to do that so you you
could get in there and yeah bias your
amp you know make it a little colder so
you get less Headroom if you have a Mesa
they don’t even allow you to bias the
amp they don’t put the parts in there to
let you change it so that way they get a
little bit more of a consistent product
and also that’s why they demand you use
their tubes they’ve kind of made sure
their tubes will always hit a certain
bias point that way they kind of get
consistency and reliability by doing
that you’re going to either extend the
life of your tubes or suck the life out
of ya and and but in you you suck the
life out of your tubes some people think
that sounds really good like I know
Angus Young and his current rig watch
this trick run down they were saying
that they like tobias all their amps
really really hot that Angus likes the
sound of the amp when it’s biased over
hot to the point that like yeah they go
through tubes you know within weeks
right or maybe even a show or whatever
hey man eddie van halen also he wanted
to buy us his amp alle hot even though
he did other things he liked the sound
of those tubes being biased really hot
if you’ve ever played a vox a cathode
biased vox you’re hearing an amp that is
biased very very hot and they just kind
of have a certain sound to them that
kind of goes away when you bias a colder
but say you know you have like a 5150 or
whatever high gain amp those amps tend
to sound better through a colder bias
power section you might not want that
really loud power section you might want
a really cold so and when buy a thing
like you said you can do a by ear but
how how would you measure that what well
so you when you when you’re biasing
something you would be measuring the
plate current in some amps there is a
little part connected to your power
tubes where you just put your multimeter
across it and you said it’s millivolts
and it’ll tell you exactly the amount of
millivolts heading to your power tubes
and for your power tubes there’s like a
number to be achieved or all range to be
achieved and so you would just twist the
bias knob and you’ll just twist that
bias knob until it kind of sounds good
to you and like in my amp that I’m
sitting on right here I know that that
bias knob only gives me a few volts
negative and a few volts positive from
the center position
that’s only enough to really change like
the wattage like this amp is at 29 watts
that we could have a whole nother
conversation about wattage and amps all
of its ally but this ant is at 29 watts
and if I crank the bias I might gain
like maybe 2 watts and same if I go the
other direction I might lose maybe 2
watts hmm
so perceived volume that’s like only a
tiny tiny tiny difference but in terms
of the character of the sound you would
definitely notice once one end of the
range to the other and then I could
change apart and make that range even
wider to get even a larger that’s tonal
palette and so you can really just set
that the way that you like it knowing
that it might change the life of your
tubes but it really isn’t a danger at
least on your amp to yeah I mean yeah I
mean it’s tree is is it dangerous that
if you put in say like the wrong tubes
and then turn that thing that yeah some
very bad things can happen but a lot of
amps or designs today in a way that you
should be able to put the tubes in and
nothing bad should happen especially
where today we can buy matched sets all
the time that was a luxury they didn’t
have back then or back then it was even
more of a luxury than it is now so you
you know you’re you’re pretty safe
thrown in tubes into your amp whatever
they may be and not maybe not even
having to change the bias you know might
be just fine I’ll say this if you’re
comfortable with using a multimeter
awesome if you’re not you’re comfortable
with using a multimeter don’t if you’re
not even comfortable putting said
multimeter near 400 volts or even many
amount slower than that I mean you only
need like say 40 to stop your heart or
touch current or whatever but yeah it’s
it’s dangerous as hell in there yeah
you see those guys on YouTube and
Instagram poking around with a chopstick
that is no they’re not messing around
you want to be poking it with the
chopstick and nothing more oh yeah no
not metal chopstick move wood plastic
something that won’t kill you right
because I’m sure we’ve pissed off a lot
of texts yes yes they don’t like me
telling you that yes biasing is not as
great mythical monster as it is like
it’s you know it it needs to be checked
when you put in new tubes that way
everything is just so you make sure it’s
running fine or if you put in a bad tube
you know the bias might start going
crazy and you might not notice it until
the amp really really fails which would
be bad so right now that’s why you just
need to check it every time but yeah I
mean if you if you have a cathode bias
amputee v’n there’s nothing to do you
just plug in your tubes and go your your
amp biases itself automatically so well
yeah I guess that’s why you you would
get something like that
you said the boxes have that yeah some
boxes like you see the older design
boxes there are just about all cathode
biased which means they they biased
themselves in a different way than your
hot rod deluxe or your 5150 your typical
Marshall or fender amps they they have a
couple parts in a different spot that
allows them to hit even higher bias
point and even louder like getting those
tubes as close to their maximum output
limit as possible or even sometimes on
the limit like actually I have a Vox AC
for it has one yo 34 in it that one al
34 is supposed to dissipate a maximum of
12 watts and when I open this amp up
from the factory it was dissipating a
nice fourteen point three watts so yeah
it was biased hella hot which is if you
haven’t an AC for
and wonder why YouTube’s didn’t last
that long that would be why they are
running at if not past their limit and
so it sounds great and it sounds as loud
as that tube could possibly be but yeah
I think gonna last long that tube that I
pulled out like the red JJ was no longer
red it was like gray and I think that
that tube was only like not even a
couple years old like maybe 2 or 1 year
old oh that’s a good I wanted to ask you
about that how do you know is there a
way to visually tell if your tubes have
gone bad
well if you have JJ’s they shouldn’t be
there shouldn’t be anything other than
red if they came red they should still
be red and if you have evens like groove
tubes from trying to think other
companies that put red the Ruby or that
color should not have changed and if it
has that means they’ve been cooking hot
for a while maybe not over even maybe
not that he’s been like you know like
failed or bad but just over time they
wear out and they’re gonna need to be
changed
that’s the the tubes you’re talking
about the outside of the actual glass
tube mm-hmm the outside of the glass
yeah we’re gonna label is printed right
and we’re talking about the the preamp
tubes or that output – oh your preamp
tubes should never go bad on the game
when I say never that’s assuming that
they’re not in amplify Milou a tremolo
will actually like wear down a 12ax7
but your preamp tubes are being used in
a manner that they should last longer
than you okay they should I mean
sometimes a phase inverter tube that
that kind of works the hardest so that
will kind of lose its life before
anything else but as far as like the
preamp goes those should be fine your
power amp tubes on the other hand those
are being run how hot and especially in
a cathode biased amp they’re gonna be
even hotter
but yeah it’s just the the outside of
that you really don’t want to wait until
the outside of your tube is discolored
to then think should I change my tubes
like you should take it in or if you
have a multimeter look online there’s
definitely a bunch of resources on how
to just quickly check your bias I mean
how you could probably even get friendly
with your amp Tech and ask them to
install a part so you could just check
it on your own that way you don’t need
to pay them a freaking bench free every
time just to unscrew the back of your
amp you know right and just you know
that’s all you’re doing is just checking
one little thing and if it’s within this
range like you’re good to go you don’t
need to do anything
yeah it’s that easy that quick so when
when the tubes gone bad the voltage will
be too lower than it should be actually
might even be higher the tube might say
run away or when we say run away it
means it starts to draw so much voltage
and current that the parts inside will
what we call red plate and where they
will actually glow red like a cherry
like lava yep I’ve seen it yeah it looks
like your tube is like turning into lava
on the inside or whatever it’s like oh
that’s probably bad yep the one time we
were back to rock and all of a sudden I
smell this smell and I’m like turn
around yeah yeah that’s more than
typical am I am the tubes get that the
filament inside gets that that will that
will glow that’s supposed to glow oh but
the plate around that like the big long
gray plate that’s probably in there it’s
specially long in your rectifier but
yeah like it’s got like you know there’s
four sides on it that part like right in
the corner is where it’ll start to glow
cherry red like hot is the coals in your
fireplace yeah yeah
and that that’s a bad thing you do not
want to have to happen to your tubes if
you see that happening to amp turn it
off as fast as possible yeah don’t don’t
turn it back on because yes um
something’s wrong maybe it if a tube
fails sometimes that happens and if you
have like I know this gets gonna happen
to a to tube and it’s like one of them
is red plating then it’s probably just
that tube but if both of them are red
planning then it’s probably something
worse like you’re by a circuit inside or
maybe even the Transformers go on who
knows but they wouldn’t go
they wouldn’t we’re down at the same
rate like if you put those two things
come day no they would wear down at the
same rate but if one did fail then one
would fail way more than the other
but no they usually will wear it down at
the same time and you know how much sure
like you turning on your amp I mean I
probably turn it on and use this
Princeton for I don’t know five hours a
day if I was a gig maybe eight hours a
day yeah so and and even if you’re not
gigging you probably turn it on just to
like jam and practice right that’s it
like five hours of yeah yeah
threads on yeah yeah
yeah those would probably last you I
don’t know a couple years I mean again
it depends on how it’s biased you know
if you wanted it biased really hot you’d
probably go through tubes in a year
mm-hmm
if you wanted it biased really cold you
could probably make your tubes last ten
years okay as long as you you know we’re
just checking on it and making sure that
it never went outside the voltages you
expect you know like the tube rectifier
doesn’t fail sometimes that’s like
things that just happen with the
rectifiers that they’ll fail and when
they fail that usually means your power
tubes will be the first thing to suffer
and probably go bad and pray that you
have some type of fuse or protection in
your amp to prevent other things from
going
yeah because I bet replacing your power
transformer was not cheap yeah
fortunately for me defender
oh that’s right say the power
transformer is the most expensive part
yep right further than everything else
in the amp it is the most expensive part
yeah and like the heart of your amp and
yeah you do not want that to go the fact
that fender did pay for that is
definitely up to my I mean I I’ve loved
the sound of fender amps but the fact
that they stood up for that you know
they paid for that it was like they make
someone like hunter care about everybody
else it makes you scared to buy a used
and I mean thinks yeah a lot of little
parts or whatever but as long as you get
it serviced and it’s serviced properly
you know right like I’ve read like you
know a properly fused transformer should
last longer than you so in that sense
you shouldn’t need to worry about say
old parts old capacitors yes those those
are bad those can be really bad those
can be hella bad there’s a part inside
the amp called a death capacitor because
it’s just in one spot where it’s like oh
this is hella dangerous let’s just
connect 400 volts right to the chassis
that’s cool mm-hmm if it fails yeah
that’s like oh no let’s not do that
actually the the amp tech get uh music
technologies and is that Alexandria
somewhere around there Northern Virginia
when my reverb tank went out on my hot
rod he he fixed that under warranty
actually but he did switch out a bunch
of capacitors he said they were like
these really cheap capacitors that
vendor was using and the the Illinois
capacitors yeah that’s they they had to
come out in mind they there I guess
famous or infamous for being used in the
hot rods Illinois capacitors sorry to
trash on you but you have a reputation
every everyone knows about it’s like oh
you’re hotrod Deluxe is making some
hissing noises and random pops well what
do you know your capture leaking and
it’s not even like 10 years old yet your
your filter cap should should last you
know as long as if not maybe longer than
your tubes and if you use shitty ones
yeah they won’t last long and then maybe
your tubes might not even last long
right so I know you said a power surge
fried your amp mm-hmm but sometimes like
filter capacitors if they go bad and
left bad for too long they would fry
just as much if not more so you
definitely need to get those changed out
don’t like I’ll say this don’t let any
amp tech talk you into leaving in the
old capacitors even you can you can
always keep them if you want to put them
back to make it look like a museum piece
and it’s in its original state or
whatever right but like those capacitors
are doing a very very important job and
once they start to fail you gotta get
them out of there like you got to get
them out like I had parts in this MPEG
random resistors that shouldn’t go bad
at all but because these capacitors went
bad they caused these other things to go
bad and it’s just like more damage that
didn’t need to happen right chain
reaction yeah pretty much
well yep
Thank You Myles first coming on yeah
awesome
I’ve learned a lot yeah we’ll definitely
do this again
absolutely I’ll try to shave next time
and maybe comb my hair yeah no no I know
you have some plans for the coming year
in terms of things that you are working
on and we will keep the audience
informed yeah big plans for this year
yeah
David plants so yeah you want to share
those big plans here’s a secret it’s
it’s kind of a secret I’ll just say that
I’m trying to I haven’t even told Aaron
this
because I think I had one last things I
said to him as if I have my layout
finished yes no no I read it I read it
yeah so no I’m trying to I’m trying to
fit a bunch of I’m not a bunch of rare
stuff in one box but I guess you could
say I’m trying to put say like a Dumbo
in a vibe reverb and a black bear in a
brown face so yeah ranch tremolo rare
reverb and a rare preamp yeah so yeah
it’s gonna be very tasty awesome
well we’ll definitely have to follow up
with you miles in the future and see how
it’s going
yeah thanks for coming on man it was
great to catch up good talking to you
yeah yeah and thank you guys for all
tuning in again for another episode of
prep buzz the podcast and we’ll see you
next week
I’ll see you next year oh yeah yeah but
by the time they hear this it’ll already
be monster that’s true well so we’re
time traveling we are I needed to do off
the bucket list done oh sorry I guess
all right everybody have yourselves a
good day and we’ll talk to you next week
[Music]

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