Search found 9 matches

by LegendaryCheddar
Thu Jul 30, 2026 5:53 pm
Forum: Technical Discussion
Topic: Questions about the Matchless DC30 Effects Loop and Phase Inverter
Replies: 3
Views: 5517

Re: Questions about the Matchless DC30 Effects Loop and Phase Inverter

Hiya i built a DC30 clone, and its bloody lovely. The FX loop is not super useable however. Ive put a dumbleator in it but it induces a fair amount of hum in the output which isnt a problem in the ODS I also built.. My thoughts are that the DC30 is a wonderful thing, and basically passive fx loops a...
by LegendaryCheddar
Sun May 31, 2026 1:44 pm
Forum: Technical Discussion
Topic: Benson Tall Bird All Tube Reverb info wanted
Replies: 6
Views: 5247

Re: Benson Tall Bird All Tube Reverb info wanted

Sure, of course.

Its no longer being built and I cant find any for sale...

That said I understand theyre still in business.
by LegendaryCheddar
Sat May 30, 2026 8:01 pm
Forum: Technical Discussion
Topic: Benson Tall Bird All Tube Reverb info wanted
Replies: 6
Views: 5247

Re: Benson Tall Bird All Tube Reverb info wanted

So far using this thread: https://www.guitarscanada.com/threads/benson-tall-bird-all-tube-reverb.293707/ And the pictures included, I’ve made this so far: IMG_0628.jpeg Anything that’s glaring? Not sure if this unit has a choke, I can’t find any useful chassis pics online.. And the power supply is a...
by LegendaryCheddar
Sat May 30, 2026 5:03 pm
Forum: Technical Discussion
Topic: Benson Tall Bird All Tube Reverb info wanted
Replies: 6
Views: 5247

Benson Tall Bird All Tube Reverb info wanted

Hi everyone, I’m desperately seeking schematic, chassis photos and any information on the Benson Tall Bird reverb unit. It’s not dissimilar to the classic 6g15 fender, but clearly coveted. I’d like to make a clone! If anyone knows anything about them/has one/is willing to share info please can you d...
by LegendaryCheddar
Sun Apr 12, 2026 11:39 pm
Forum: Dumble Discussion
Topic: Dumblelator with Spring Reverb
Replies: 4
Views: 11444

Re: Dumblelator with Spring Reverb

Thanks Richard!

I would put a 220k resistor between the first plate and B+, would that solve that?

Im a beginner so please tell me the other reasons why it wont work!

Im also trying to copy the reverb from a JMP 2144, which is only two triodes of a 12AX7.
by LegendaryCheddar
Sat Apr 11, 2026 12:01 am
Forum: Dumble Discussion
Topic: Dumblelator with Spring Reverb
Replies: 4
Views: 11444

Dumblelator with Spring Reverb

Hi Everyone, I've been trying to incorporate a fender-style spring reverb into a Dumblelator circuit, and would appreciate some help. I have taken the standard 1x12AX7 Dumblelator, and thought that I could use the first triode as a phase splitter: So the plate of V1A is the reverb driver, with coupl...
by LegendaryCheddar
Tue Jul 08, 2025 3:56 pm
Forum: Technical Discussion
Topic: PTP Vibrochamp Hum
Replies: 10
Views: 1818

Re: PTP Vibrochamp Hum

Thanks everyone-all sounds amazing now…

ill post some pics of it in the cab Im building at some point.
by LegendaryCheddar
Thu Jun 26, 2025 8:31 am
Forum: Technical Discussion
Topic: PTP Vibrochamp Hum
Replies: 10
Views: 1818

Re: PTP Vibrochamp Hum

Thanks everyone, all really useful stuff. First champ Ive built and didnt realise that the lack of filtering was such a big deal on it.. Id like to implement the Pi filter-looks like that’ll probably do it. So do I pop another 20uf/450v next to my reservoir cap-straight after the 470r resistor? Neve...
by LegendaryCheddar
Wed Jun 25, 2025 12:01 pm
Forum: Technical Discussion
Topic: PTP Vibrochamp Hum
Replies: 10
Views: 1818

PTP Vibrochamp Hum

Hi Amp Garage legends, Long time reader first time poster, from the UK. Currently finishing up a first PTP AA764 Vibrochamp, and it sounds lovely-but has a heater hum (50hz for me in UK), and I cannot fathom it. I’ll attach some pics, and if anyone can see what the dickens I’ve missed I would really...