Tweedy

[Structo]

Any of you that built the Tweedle Dee install any kind of Master Volume?

I know they are controversial because they can alter the character of the amp.

I was thinking about sticking a 1M pot in place of the 1M resistor on the V2 grid.

[martin manning]

You could try that, but there's no reason you couldn't do a Lar-Mar PPIMV.

[Synchu]

I did VVR to my 5E3 and have installed one to the Tweedle Dee with couple of wires left to solder. Then I loaned it to a friend to use it as kinda model for building his some months ago. Once I get it back, I will finish it and post the results.
The 5E3 one, though, sounds better than I hoped.
Niki

[mhartman]

I did VVR to my 5E3 and have installed one to the Tweedle Dee with couple of wires left to solder. Then I loaned it to a friend to use it as kinda model for building his some months ago. Once I get it back, I will finish it and post the results.
The 5E3 one, though, sounds better than I hoped.
Niki

This. I did a point to point VVR on my 5E3 and it worked great.

[vibratoking]

I compared Lar-Mar and VVR from Dana in the 5E3. VVR was the winner for me. Scaled the whole amp with the VVR. Good mod.

[Structo]

Sounds like the way to go is scale the whole amp?

Did you guys set a minimum voltage?

How can you tell if the MOSFET tab is grounded or must be isolated?

I don't see that on the data sheet, might be looking at the wrong thing.

[vibratoking]

Sounds like the way to go is scale the whole amp?

Did you guys set a minimum voltage?

How can you tell if the MOSFET tab is grounded or must be isolated?

I don't see that on the data sheet, might be looking at the wrong thing.

Scaling the whole amp avoids the interaction between the power section B+ and the MV, which needs to be adjusted as you scale the power section. YMMV. I only know how I like it. Dana has a nice installation guide which would help you if you use his or your own. Google VVR3 pdf.

I used Dana's VVR kit cause it's easier to fit. If you can't tell from the data sheet, you can measure which pin is tied to the tab with a meter.

Install it so the rectifier sees the first cap. BTQ, my 5E3 installations had a propensity to oscillate due to the extra length on the B+ line. A little lead dress fixed it.

[Structo]

Thanks for the info!

I'm going to scale the whole amp but I may set a minimum voltage.

[stelligan]

When is somebody gonna post some audio of one of these things?! I have been trying to decide whether to modify this head.... Is it a big improvement over an already classic sounding 5E3?

[img:790:565]https://lh4.googleusercontent.com/-DE2A ... G_5690.JPG[/img]

[vibratoking]

That is an often asked question. Some audio would be nice.

My understanding is that the gain is upped at the expense of cleans. The 5E3 is at my limit for cleans so I am not motivated to make the mod. Besides, the 5E3 has plenty of gain for me. Although, I am interested in the character of the tone.

It's damn near a perfect amp if you install a whizzer.

[drew]

Synchu posted some sound clips in one of the threads, but they're handicapped by good playing and good production. No one has yet provided the crucial "sucky playing and bad Youtube audio" reference clip.

[M Fowler]

I built one 5E3 from Mission Amps MV mod layout and the other from Charlie's Tweedle Dee info.

I left both at my buddies guitar shop and they get a workout with some interest so hopefully they sell but I don't like either one not my type of amp.

Mark

[stelligan]

I used to own a 50's tweed Deluxe and I sold it to a good friend. Never had enough clean headroom to do a gig with a drummer for me. Sounded great to record with or play at home. And some of you guys are cutting these back with a master volume? I guess I will pass and move on to another 4 x 6L6 build. I guess I still play too loud for an old fart.... Cheers to all and sorry for the derail.

[Structo]

Yeah, most of the volume (loudness) happens in the first third or so of pot travel, turn it more to the right and the character changes with distortion overdrive.
I'll have to dig out my db meter to see what's happening.

I know that for a gig, keeping up with the drummer and bass would be bit of a challenge for this amp, so I'm mainly want to play at lower levels with the same character.

I guess I just described an Attenuator.

[Synchu]

You did This is a very nice amp, though kinda not universal. Albeit it is a Tweeds deluxe bad cousin, it is still a tweed deluxe, you can't expect the clean to keep in a loud band situation, if not miked, or it is a jazz trio
Drew thanks for the kind words.
I think the samples are somewhere in the pinned thread up there. I can dig them out tomorrow when I'll have a computer, if someone still needs them.
Niki