The Amp Garage

Instead of adding a choke, etc, can't he add another C before the Ptube? per Merlin: " Adding a second filter before the power valve is sometimes done in single-ended amps" http://www.freewebs.com/valvewizard1/smoothing.html He goes on to say the choke is essentially overkill because it is not a hi...

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I tried grounding the volume pot body, and separate star ground for each of the three power filter caps. Again, no change. I also tried lifting the negative feedback line. No change. So I ripped out all the extra ground lines I had put in, and reverted to my original design. Absolutely no change in...

rhinson good information thanks. Sniffyduke, yes I built the Zwreck very nice amp I like my tele through it, the LP really punches through. Ryan (KT66) a TAG member posted this nice layout and schematic which would get the job done Michael. Mark Oh thanks Mark. Is that Close? you can use that layou...

Been working on a new record. doing accoustic demos. I will send you a track via email. Just bought a very rare matchless. Only 3 made. Also, I got a Morgan Dual 20 from Joe Morgan. www.morganamplification.com. The only amps I want to build would be a Cowtipper 35 or a x10. Other than that I am in ...

Hey rhinson, it appears that all of the gut shots of the various xits builds contain a diode grouping that in all likelihood is for SS rectification. Why would you think there's a recto tube therein?...that is, unless the builder has incorporated an SS/tube recto switching of some kind. Or could th...

Glad to see a couple others as impatient as me! I look forward to doing this together with you guys... rawnster's lower photo (one I originally posted) is not of the sadie, or the X10, there are three power tubes (unless one is a PI tube that is taller than a 12ax7?). I did not order a choke resist...

Is anyone/everyone interested in helping me guiney-pig this amp? I would like to build it but the PT values escape us. My thought is with the VOX night train having a similar setup and running plates at 330V, it might be similar and to shoot for a B+ of around 350 fro some wiggle room on the voltag...

the output trannie in the pics looks to be about the size of the merc ac15 style trannie---probably the larger 1 1/4" sized stack. also, i'm wondering about the "cut" cap of 100pf across the grid loads. i think it's probably a resistor/cap combo in heat shrink-----probably something like the standar...

looks like the pot in the lower left is the "trem beat control" . looks like the bigger one might be a hum balance since it looks connected to the heaters. rh

I have heard people rave about the reverb in Tony Bruno's "Cowtipper" amplifiers. Anyone ever seen the circuit and can comment? Schematic?? I love reverb and an interested in alternatives to the Fender AB763 style. Thanks! P. the cowtipper stuff is straight up blackface reverb---no changes. the und...

The note w/ the first photo in the directory says "Sadie in X10 clothing". So, were not really looking at X10 guts, but a Sadie instead? Strange looking coupling cap coming off of V1's plate. http://www.soniccraft.com/relcap_rte_capacitors.htm rel-cap. appears to be a polystyrene from the descripti...

Does he have a 230V supply? The schematic shows a 230V input. Is that 5 volts going to the heater supply? Don't 7025s want 6.3V? By "modify" do you mean change the power transformer, output transformer and....uhhhhh......gut mostly......everything in between? In other words, keep the chassis and re...

JamesHealey wrote:Since pacific never made a 5k2 and ken switched to them in 84 i think you're wrong! It just doesn't add up that he used the 6k6 first. Especially since we know which stancor he used previous to the pacific which was 5k2 for sure.

which stancor model did he use prior to the pacific? rh