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FDP Forum / Amp Mods, Repairs, and Projects / thoughts on a TRRI mod

Contributing Member

South Florida

Dec 2nd, 2016 10:30 AM   Edit   Profile  

I think the design is all wrong.

a.) I would like to dispense with the footswitch altogether and have both reverb and vibrato 'on' all the time and dial in whenever I want. You can always dial it off. I would never switch it on an off during a gig. Frankly I would just set it and leave there. Why is a footswitch necessary?

b.) The vibrato is too fast and harsh even at 3 or 4 and anything beyond 5 is unusable to me. I'd like to mod it so it's a very gradual slow vibrato and closer to a Deja Vibe.



United States

Dec 2nd, 2016 10:40 AM   Edit   Profile  

I think you can slow it down, but I dont think you're going to change the vibratos tone just by slowing it down. Personally I leave mine at speed 3 intensity 7 and it sounds good.

Always On Switch

(This message was last edited by NHILL1 at 12:42 PM, Dec 2nd, 2016)

Contributing Member

Don't stumble over

something behind you
Dec 2nd, 2016 03:56 PM   Edit   Profile  

Generally, it's best to have a control option (footswitch) and not need it--than need the control and not have it.

Yep, there are simple ways (circuit mods) to slow the pulse rate.


United States

Dec 2nd, 2016 04:15 PM   Edit   Profile  

I think honestly your better off getting a tremolo pedal if you're really looking for something different. Bias based tremolo pedals are STELLAR, and are more tweak-able if you're looking for something different than the on-board tremolo.

Wish I could help you out on mods for slowing down the tremolo, as I understand personally it could be slower.

(This message was last edited by NHILL1 at 06:22 PM, Dec 2nd, 2016)

Contributing Member

South Florida

Dec 2nd, 2016 04:23 PM   Edit   Profile  

I did not know there was an always on plug. I think that's fine for my purposes. I do agree that my standard Boss Tremelo pedal does a better job than the on board control.

I was just thinking of simplifying for the grab and go gigs.

In I think I'm going to mount an OCD and DD7 to the back of the amp and attach it with zip ties so I can do away with the floor pedal board.

(This message was last edited by larryguitar19 at 06:25 PM, Dec 2nd, 2016)


United States

Dec 3rd, 2016 12:46 AM   Edit   Profile  

Also, if you're going to use an outboard tremolo effect, no need to buy the always on jack. The reverb will always be on if you leave it that way when unplugged, and then just engage tremolo pedal when desired. Food for thought.

(This message was last edited by NHILL1 at 02:58 AM, Dec 3rd, 2016)



Dec 3rd, 2016 10:01 AM   Edit   Profile  

Personally I like the vibrato of a Magnatone way better. Basically its pitch-shifting "vibrato" instead of amplitude shifting "tremolo" . You get a soft swirly pulse instead of a helicopter sounding choppy sound.

Magnatones don't have the power and headroom of a Twin. Probably the most powerful one you'll find of the antiques would be a 260 (460 if you want reverb)
and those are maybe 35 watts.

If you need all that power, I'd suggest getting a nice vibrato pedal like a Maggie.

Here's a typical Magnatone vibrato demo:

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