Little tricks for getting what you want from Fender amps

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Re: Little tricks for getting what you want from Fender amps

Post by Jay » Wed Mar 10, 2010 8:04 am

Thought of another Fender mod... on the Deluxe Reverb (and probably any of the 'ab763' amps) the Rev/Vib channel uses a .02 coupling cap right after the tone recovery stage whereas the Normal channel has a .047. If you prefer the slightly beefier sound of the normal channel, replacing the .02 with a .047 makes the frequency response of both channels pretty much identical. This also could work backwards... so if you prefer the slightly thinner verb tone, then replace the .047 with a .02.

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Re: Little tricks for getting what you want from Fender amps

Post by kypdurron » Sat Mar 20, 2010 3:55 am

Great thread. Many things to learn here. thanks ninja!
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Re: Little tricks for getting what you want from Fender amps

Post by promagnum » Mon Mar 29, 2010 7:08 pm

Can someone explain why the first reverb mod didn't work on my Deluxe 85? I got some splash, but not as much as I get when I use the 'normal' reverb setup.

Any help would be appreciated.

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Re: Little tricks for getting what you want from Fender amps

Post by Stratelejazzuar » Mon Mar 29, 2010 10:43 pm

promagnum wrote:Can someone explain why the first reverb mod didn't work on my Deluxe 85? I got some splash, but not as much as I get when I use the 'normal' reverb setup.

Any help would be appreciated.
maybe because the deluxe 85 is too new of an amp? i think the mod applies to the more vintage-spec amps (black- and silver-face)

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Re: Little tricks for getting what you want from Fender amps

Post by promagnum » Tue Mar 30, 2010 1:53 pm

Oh ok. Thanks though.

Would there be a way without buying a reverb unit or a pedal to get that dwell, mix, tone thing?

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Re: Little tricks for getting what you want from Fender amps

Post by fostewi » Wed Mar 31, 2010 11:47 am

Hi, I want to confirm my understanding of the reverb dwell/mix/tone cable mod...would this be the correct cable to use?
http://www.thesource.ca/estore/product. ... ct=4202373" onclick="window.open(this.href);return false;

Are there any risks to your amp with trying this mod? e.g. turning up the channel 1 volume too much, etc.

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Re: Little tricks for getting what you want from Fender amps

Post by Stratelejazzuar » Wed Mar 31, 2010 4:48 pm

fostewi wrote:Hi, I want to confirm my understanding of the reverb dwell/mix/tone cable mod...would this be the correct cable to use?
http://www.thesource.ca/estore/product. ... ct=4202373" onclick="window.open(this.href);return false;

Are there any risks to your amp with trying this mod? e.g. turning up the channel 1 volume too much, etc.
looks right to me!

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Re: Little tricks for getting what you want from Fender amps

Post by øøøøøøø » Thu Apr 01, 2010 8:01 am

fostewi wrote:Hi, I want to confirm my understanding of the reverb dwell/mix/tone cable mod...would this be the correct cable to use?
http://www.thesource.ca/estore/product. ... ct=4202373" onclick="window.open(this.href);return false;

Are there any risks to your amp with trying this mod? e.g. turning up the channel 1 volume too much, etc.
That's the one!

No danger that I can see. I did it once on my Twin Reverb. Worked pretty well. Biggest drawback to setting the reverb 'dwell' low and turning channel 1 volume ('mix') up high would be increased noise. Of course, if you have it really cranked, maybe avoid 'crashing' the reverb by knocking the amp around, or whatever.

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Re: Little tricks for getting what you want from Fender amps

Post by fostewi » Thu Apr 01, 2010 8:24 am

Thanks guys...can't wait to try this, such an inexpensive trick to get a lot more control out of the onboard reverb!

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Re: Little tricks for getting what you want from Fender amps

Post by øøøøøøø » Thu Apr 01, 2010 12:21 pm

I hope you love it! My feeling about it was "OK, I can do this with the reverb now, but did I really NEED to be able to do that with the reverb?" In other words, the joy was rather short-lived. But that's probably just me!

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Re: Little tricks for getting what you want from Fender amps

Post by arctic_rascal » Sat Apr 17, 2010 3:37 am

Nice, thanks for the tips :)

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Re: Little tricks for getting what you want from Fender amps

Post by kimjongsick » Mon Jun 07, 2010 1:41 am

øøøøøøø wrote:Someone requested this, so I started thinking about the little things you can do to maximize the sound of Fender amps.

(lots of useful information)

That's all I can think of for now. Hope that helps.
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Re: Little tricks for getting what you want from Fender amps

Post by fuzz_factor » Tue Jun 08, 2010 3:46 pm

arctic_rascal wrote:Nice, thanks for the tips :)
Yup! Very interesting thread. To bad I suck with a soldering iron. :unsure:

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Re: Little tricks for getting what you want from Fender amps

Post by noisepunk » Wed Jul 07, 2010 8:38 pm

Alright, here's a question. I have a '77 Twin. Is there a way to get the reverb/vib on the normal channel? And if there is, is there a way of doing it without running the tone of the Vib. Chanel through the normal channel as well?
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Re: Little tricks for getting what you want from Fender amps

Post by øøøøøøø » Thu Jul 08, 2010 7:28 am

yes. It's simple.

There are two ways.

Most common is to connect the plate of V1's second triode with the plate of V2's second triode and remove the normal channel's .047(?) coupling cap.

If you want the channels to maintain a little more of their distinct characters, there are other things you can do. You can let each channel keep its own coupling cap, which is not too complicated but would be hard to describe verbally. And I'm feeling lazy (sorry!)

You can also do an interesting maneuver that I've never tried-- you can put a small cap between the reverb's input (pin 7, or grid, of V3) and the output of the "normal" channel (which would be right after the normal channel's coupling cap, which is probably .047). This might be what you want, though I've never tried it.

No extra gain stage, no tremolo, no other changes to the basic "normal channel" sound. Thinking about it it seems like it should work (experiment with the value of caps... start small, like a few hundred pF) but the sound/character of the reverb might be different than the sound/character of the reverb on the "vibrato" channel.

Edit: read this thread. :)

http://www.el34world.com/Forum/index.ph ... 2#msg85272" onclick="window.open(this.href);return false;

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