trinityamps.com

Hi,
I'm in the u.k and i've just finished my first plexi build,it only bloody
works lol.no probs yet it's quiet no hum all channels work, i'll be giving it a workout over the weekend.It's taken me about 4 weeks to complete and i'm really happy with it as it was a real challenge.I hadn't soldered anything since being at college many moons ago now.
Can someone tell me how to jump both channels as i've read it
gives you more gain/tones etc.
I will need to fit a vvr as i can't get crunch at low volumes,man do i want to crank this thing up.
What sort of mods do people do to get more gain in the tmb channel.
I'll get some pics done and some utube stuff in a few weeks.
I feel some aerosmith coming on gotta go.

The way I do it on my SIIIv6 is:
guitar into the high TMB input, short jumper from low TMB to the high normal channel.

You can set your TMB channel then start to add normal channel tone and volume to taste.

I plug into TMB hi out of tmb low to normal hi.

I don't think it matter much but FWIW I set my normal channel tone first.

We have VRM if you want to fit that. Crunch at lower volumes.

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Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

I've seen multiple references in the forums to VRM. Is this some type of attenuator?

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Cheers,
Steve

Check out the "Resource" section...
viewtopic.php?t=1176

Joe G

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Some assembly required,
Brain sold separately...

I've seen that, and that's great... but it seems to define VRM as VVR, an equally puzzling TLA for me.

There must be a purpose to this mod... a functional description of it...

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Cheers,
Steve

In effect, it's like using a Powersoak/Hot Plate in that it lets you crank the gain & master vol without the bleeding eardrums. The VRM does this by allowing you to dial the B+ voltage down.

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- This Space For Rent -

Thanks so much for the help. Sounds useful... my 18 is LOUD!!!

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Cheers,
Steve

The 18 sIII or TMB has two channels and you can jumper them. Doing this feeds the input signal into both channels and sums at them the Phase Inverter for additional gain and tone at the output.

You can really control the volume of each channel and mix them together with tone controls from both channels to help blend it in even better. This gives a very nice complex tone and some gain boost.

To do this, you can use a Y-cord, A-B Y cord or standard jumper cable and plug it into the high input of one channel and the low input of the other. Plug the guitar into either of the remaining inputs - high or low as necessary.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

The VRM (Voltage Regulation Module) is based on a circuit called the VVR but uses different parts including the MOSFET to ensure the voltage drop when set to maximum is as close to zero as possible. It is a way to vary the voltages in a guitar amp to change the power level of the amplifier.

The VRM is a simple circuit that when installed will make the B+ voltage variable from almost 100% power to a minimum level.

It is simple, effective and very economic.

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Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps