Hi, I'm a total beginner to all this stuff. So I apologize if this is the wrong place to ask this question, or if it doesn't make much sense.
I want to build/isolate the Preamp section of a Fender Hot Rod DeVille 212 III. How would I do that? I can somewhat read schematics, but again I completely new to this so I don't knew where I would local the preamp. What part of the schematic should I be focusing on?
Thanks
I want to build/isolate the Preamp section of a Fender Hot Rod DeVille 212 III. How would I do that? I can somewhat read schematics, but again I completely new to this so I don't knew where I would local the preamp. What part of the schematic should I be focusing on?
Thanks
Easiest way is to take the preamp output at jack J3.
If you want to disable the power amplifier section, remove C24.
If you want to disable the power amplifier section, remove C24.
Rayma is there anyway you could elaborate a little more on that? I've never done any work like this before. Thanks
First, why do you want to do this, use a different amp?
The preamp out jack is right there on the panel.
Or do you not actually own the unit, but just want to duplicate the preamp section?
If so, you need to duplicate everything from the input to the preamp out jack,
which is essentially the top half of the schematic.
But you will need at least some kind of knowledge about building hardware to do this.
The preamp out jack is right there on the panel.
Or do you not actually own the unit, but just want to duplicate the preamp section?
If so, you need to duplicate everything from the input to the preamp out jack,
which is essentially the top half of the schematic.
But you will need at least some kind of knowledge about building hardware to do this.
I don't have the unit, it's just a project I decided to do because I only really need the preamp section
Ok, will you build it point to point, or on a pcb?
This will be more difficult than building an amplifier.
Lots of pots, sockets, connectors, relays, etc.
Not to mention the power supply.
Not the best first build project.
Here's a board that you missed, but look at the complexity.
https://reverb.com/item/19725551-fender-hot-rod-deville-circuit-board-pcb-1997
This will be more difficult than building an amplifier.
Lots of pots, sockets, connectors, relays, etc.
Not to mention the power supply.
Not the best first build project.
Here's a board that you missed, but look at the complexity.
https://reverb.com/item/19725551-fender-hot-rod-deville-circuit-board-pcb-1997
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The complexity I don't mind. I can keep trying and tweeking until I get it to work. It'll be on pcb eventually. My idea is sort of like any Amp emulating pedals. Essentially I just need the bass, middle, and treble. I want to make a Pre amp/OD style pedal
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Overdrive with these amps not the greatest.
just having tubes not always magical.
Far as passive tone stack, or tone control it has been done many times.
can just be glued in between 2 op amps.
most the magic to distortion is gain stages and filters.
far as a tube getting blasted with gain or transistor blasted with gain.
neither very magical.
Marshall Governor is well known.
Basically that. Distortion stages with amplifier tone stack after.
just having tubes not always magical.
Far as passive tone stack, or tone control it has been done many times.
can just be glued in between 2 op amps.
most the magic to distortion is gain stages and filters.
far as a tube getting blasted with gain or transistor blasted with gain.
neither very magical.
Marshall Governor is well known.
Basically that. Distortion stages with amplifier tone stack after.
Perhaps a better description of what I'm trying to do it has a pedal that's basically a TS808 with the ability to change the bass, mids, treble, and also has a clean blend
Tube screamer has high pass filter and low pass filter. to make it smooth distortion.
you would want to use active filter to boost bass back.
The standard tone control is actually a treble boost.
So that is already covered for treble control.
Countless boss pedals that have 2 band or 3 band tone controls.
Usually " bass" control be a shelf filter that adds back whatever was high passed before
the distortion.
Far as mid boost / mid cut
only works for certain circumstances.
Usually boost is Wide and mid cut is narrow to clean up top end.
Ideal mid control is sweep able and those circuits again are found
in most the " metal pedals"
Wide boost works around 700 hz and narrow cuts up around 1 to 3 k
so basically why metal pedals are sweep able.
and again Roland or Boss has plenty of those circuits.
Even DOD did few take offs of the classic " rat" pedal
which was basically same concept. instead tube screamer
its a rat with tone controls. think it was grunge pedal. punkifier
super american metal yadda yadda yadda. probably six million
rat pedals or tube screamers with active tone controls glued on.
Likely Sans Amp or Tech 21 did the best with the GT2.
Has screamer and ratty distortion types, switchable with tone control
then " cab emulator" which is basically steep filters to clean up the distortion.
Most people should ignore the cab emulator label and just learn how the filter works
to clean up the sizzle
forgot the actual pedal. even Jerry Garcia used" metal "pedals for solos.
. Mainly being used for the advanced tone controls.
Far as "amp in a box" most the more famous Randall solid state heads and many marshall
solid states have some of the better " pedal" distortion design already done.
clean blend concept, just makes it sound more or less distorted.
basically same as turning gain up or down.
you would want to use active filter to boost bass back.
The standard tone control is actually a treble boost.
So that is already covered for treble control.
Countless boss pedals that have 2 band or 3 band tone controls.
Usually " bass" control be a shelf filter that adds back whatever was high passed before
the distortion.
Far as mid boost / mid cut
only works for certain circumstances.
Usually boost is Wide and mid cut is narrow to clean up top end.
Ideal mid control is sweep able and those circuits again are found
in most the " metal pedals"
Wide boost works around 700 hz and narrow cuts up around 1 to 3 k
so basically why metal pedals are sweep able.
and again Roland or Boss has plenty of those circuits.
Even DOD did few take offs of the classic " rat" pedal
which was basically same concept. instead tube screamer
its a rat with tone controls. think it was grunge pedal. punkifier
super american metal yadda yadda yadda. probably six million
rat pedals or tube screamers with active tone controls glued on.
Likely Sans Amp or Tech 21 did the best with the GT2.
Has screamer and ratty distortion types, switchable with tone control
then " cab emulator" which is basically steep filters to clean up the distortion.
Most people should ignore the cab emulator label and just learn how the filter works
to clean up the sizzle
forgot the actual pedal. even Jerry Garcia used" metal "pedals for solos.
. Mainly being used for the advanced tone controls.
Far as "amp in a box" most the more famous Randall solid state heads and many marshall
solid states have some of the better " pedal" distortion design already done.
clean blend concept, just makes it sound more or less distorted.
basically same as turning gain up or down.
you'll be able to recreate and test circuits in sim
and be able to do AC analysis of tone controls/ gain.
I just use Tina Ti
Would have saved a lot of time than the good old days
of bread boarding basic building blocks.
register a account then download
marshall guvnor and dan electro daddy o
are passive tone controls.
As mentioned most the boss pedals / Dod use active EQ to
actually boost back what is cut. which is more effective.
Tube screamer has massive high cut from what I remember.
the actual tone control is boosting back treble.
For bass would be same thing, shelf filter set to whatever the
original high pass is to boost back the bass that has been cut
to make the distortion stage.
and be able to do AC analysis of tone controls/ gain.
I just use Tina Ti
Would have saved a lot of time than the good old days
of bread boarding basic building blocks.
register a account then download
marshall guvnor and dan electro daddy o
are passive tone controls.
As mentioned most the boss pedals / Dod use active EQ to
actually boost back what is cut. which is more effective.
Tube screamer has massive high cut from what I remember.
the actual tone control is boosting back treble.
For bass would be same thing, shelf filter set to whatever the
original high pass is to boost back the bass that has been cut
to make the distortion stage.
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http://www.hoshinogakki.co.jp/pdf/ibanez/manual/en/amp/TSA5TVR.pdf
https://music-electronics-forum.com/filedata/fetch?id=847890&d=1594283343
https://music-electronics-forum.com...intenance-troubleshooting-repair/46406-/page2
https://music-electronics-forum.com/filedata/fetch?id=923725&d=1611899780
TSA15h
https://el34world.com/Forum/index.php?action=dlattach;topic=25027.0;attach=78767