The Amp Garage

Double post

Thanks again Martin! Really appreciate your help

I'll give that a try when I have some free time later this week and report back

Nah, can't get it to connect, keeps spitting out error messages at me.
Been trying to run both from the browser GUI as well as the desktop one from Ronald but it's not cooperating.
Not sure where the fault lies, software, laptop or tester

Thanks Martin! I'll give that a try and report back

Thanks Martin! Hoped you'd chime in

It's a project I did with my brother some 15 years ago if I had to guess

I haven't dared plug it in yet, is the current GUI downward compatible with the V3 hardware?

Hi guys, I hope someone here can point me in the right direction. I've been away from building tube amps for a while and am slowly getting into it again and wanted to test the stock of tubes that I have amassed over the years. I have this V3 uTracer (not the V3+) that was built years ago and put awa...

Just so you know, Hanks Guitar Shop -> Music Ground -> Your favorite crooks on Denmark street, the f#cking Harrisons
Known for faking pretty much anything music related that's half worth the effort, Dumbles included

Here's one posted by an ex employee some years back:

Anybody got experience with comparing electrolytics in the power supply for best tone? Is there one brand that sonically outshines the others? I’m getting ready to recap my 73’ 100 watt Marshall and want to get as close to the old Daly’s as possible. Thanks in advance! Hi Swankmotee, I had an email...

To further complicate things, not all pig were created equally and most surviving specimens were modded at some point. I’ve seen them with both C and EI core transformers (and combinations thereof). Best information I could find on the transformers is this bit, shared by Barry of Ampmaker I believe:...

Beautiful built right there!
Very interested in doing some 7-pin project myself.\

The EC91/6AQ4 is a high mu single triode, anyone use these before?

Edit: For a pentode pre, how about the 12AU6? Probably one of the few 7 pin tubes that have been used in guitar amp design (Kay, Silvertone)

Hi guys, sorry it took me so long to get back to this. In the attachment below you'll find the test results I promised (can share the .xlsx file as well) We tested 6 types of 47nF capacitors, 3 of each type (where available), at 3 different frequencies. Test results include: Capacitance, dissipation...

I wouldn’t just assume HAD reused the old Peavey ‘choke’resistor. It looks like this one might be 500R @ 10W while the Peavey resistor would have been 400R @ 10W Here’s another example of an Overdrive Special that, I believe, uses Peavey Iron. I have it down as being #80 but I’m not sure that’s corr...

Shouldn’t that actually give you a slightly lower voltage? You 'only' have 370Vac over that single tap, vs 390 with you other amp. That should give you about 370*1.41= 522 Vdc (minus a small drop) unloaded. According to Merlin Blencowe that should give you about 370*1.3= 481 Vdc under fully loaded c...

Sorry for the late reply.
Don’t know when they discontinued tropifol line but I don’t remember ever seeing any with 70’s codes

I get what you’re saying, that’s exactly why I wanted to do some test, see if there’s actually any magic to them, or to any of the others for that matter. Always nice to have some actual data to back it up (might be bit before I get around to testing those caps) Not sure there’s actually that much m...