Tube Amp Archive

Here's a case for a custom D-style (in the very loose sense of the term) amp I did for a guy in Switzerland. As you can tell, the case is fairly monstrous. [img:960:716]http://2.bp.blogspot.com/-C5HYhUPWgtk/TsUfS96QyHI/AAAAAAAAAJU/862N4r1Bj14/s1600/310901_10150453743115250_566135249_10720118_2065518...

The raffle for the Wombat Amps Quest amplifier was conducted today using the RandomPicker.com website. You can see the details and the protocol that was used . I'm excited to announce that David Morin of Monmouth, ME is the lucky winner! Many thanks to everyone that so generously donated to support ...

EtherealWidow, you can check out the P1x or HO amps at AX84.com which have "octal option" that you can wire in a noval and octal socket (both in parallel) and do exactly that - put in an EL84 or a 6V6/6L6/EL34 and switch between the noval and octal socket. Complete schematics, etc are there. Those ...

Anyone ever use these and what do you think about there sound, they do look cool. but Ive never heard them or heard anyone talk about them. Thanks Bill At risk of reigniting one of the endless holy wars, I'll offer that film caps of equal value all sound the same to me. But I don't claim to have go...

Uhoh.. cause I have 10-50uF Erie bias pulls that are no younger than 40 years old. They work great as bypass. Out of more amps than you can count on three hands, not one problem. Yet? ;) You may be lucky. On the other hand, the bypass cap application is not one where you would so readily notice as ...

I dunno....... I just pulled a 1998 era Pioneer home theatre amp out of the bin and there's any number of 50v bypass electrolytics in that. Probably like Nichicons and I don't know builders having problems with that....... Reusing *any* 14 year-old electrolytic cap is a false economy, It's just ask...

Yeah, I know it will never sound just like RM. What I'm looking for is the midrange/upper midrange honk that good treble boosters produce. Maybe I should have been more specific... 8) Yes, well, the recipe I spelled out will come close to replicating the frequency response described by RG Keen in h...

Hi! I have an amp which has one unused triode. I'm going to use it as a treble booster. What would be the best way to make it sound like rangemaster in front of amp? At the moment it has 68k + 68k at plate (split load, output is taken between those resistors), 6,8k / 0.22uF at cathode and 1000pF pl...

The day of the race has come and gone (it was Sunday), and I'm back home in Richmond, tired and happy, having completed my sixth Team-in-Training event in support of the Leukemia and Lymphoma Society. As for the race itself... Well, I had some challenges with my training for this event, getting sick...

jon wrote:The problem I am having is that anything above 1/4 on the dwell and mix and I am in sponge bob land.

Try various sizes of resistor from the wiper to the dry side of the mix control. For my 6G15-inspired build (there were some differences), about 100K was just about right.

Tubeswell,

Did you know that there's a South American (from Argentina maybe?) surf band called "Los Kahunas". Here's the video to a track with a title I know you'll appreciate: 6G15

Yesterday was exciting, as I both completed the tremolo PCB, and UPS dropped off a package with the head cabinet and chassis. This means that everything is here, and the final assembly phase is now beginning! Who wants to build an amp! Here's an update with a pic of all the components ready to be mo...

On a more upbeat note, things are progressing rapidly now. As of this weekend, I've finished all the point-to-point boards (main, power tubes, bias, DC heaters), and also had a chance to make the PCB for the relay/reverb driver. The only major component remaining is the PCB for the tremolo, and I ho...

Very cool Paul, I lost a sister to acute Leukemia back in '95. She had a bone marrow transplant only to succumb to graft vs host disease (her body rejected the marrow transplant) a short time later.... Life can be crappy when you die at 40 and leave 3 young kids.... John John, Thank you for your ki...

Continuing with construction of the boards. Finished the power tube board the other day. Some build-log layout & photos: http://wombatamps.blogspot.com/2012/05/raffle-amp-power-tube-board.html Have also now finished the bias and regulated DC boards, I'll post up some build log stuff soon. Now on to ...