The Amp Garage

If it didn't have a problem before, it does now. I swapped tubes with a known good set, powered on and let it sit for a minute before checking the bias. I put my meter on the test point for V7 and it was reading 18mV. As I started adjusting the bias pot, V7 started glowing blue/white and the 1R cath...

A friend of mine has been the steward of this amp for over a year now and he called me last month to tell me that there was a volume drop. He was able to bring it by today for me to check out and I'm hoping I can get a little help. I haven't had very much time with it yet, but I did play it for a fe...

question for those who have built an 002...if you turn the preamp to 10, how much crunch are you getting? Mine starts to break up with the knob at about 6 and gets pretty crunchy...not bad, just not what I expected out of this amp and it's making me wonder if I did something wrong. Also, has anyone ...

I might need to replace some 1 watt CC resistors in my 70's Fender Bassman 100 head and would really like to stick with CC. Seems like all i can find in 1 watt is cheap no name made in china, NOS and NTE. i get the feeling NTE is cheap no name packaged as NTE? i noticed a disclaimer on their site s...

This is the one I followed: https://www.makermatrix.com/blog/hackin ... illoscope/

Siglent and Rigol are popular. I have the Siglent SDS1202X-E. Oh that's funny! I just checked my Amazon wish list and I had previously saved the Siglent model. Sold! You can buy the Siglent SDS 1104X-E and hack it to 1204 specs in less than 15min. I got one of those and the signal generator module ...

Thank you!

Thank you for looking at it. I get the phase aspect, it’s the 220v series being changed to 110v parallel that has me feeling unsure. It seems correct to me, but I still feel very much a novice

I recently bought an old effects unit from europe and knew that the unit itself has an IEC plug and an easy way to modify the power input for the US supply. I didn't know that the foot controller had a hardwired power cord (I thought it received power from the unit) with an EU plug and I'd like to s...

Thank you both. I'll read through that PDF this evening. I've been using DIYLC for the past few years and have used it to print masks for a few simple PCB's. The one I'm working on right now is a copy of a preamp I own so I can make mods without devaluing the original piece. Being a stereo pre with ...

I'm having a go at making a PCB for a stereo amp and space is rather tight. Before I go too far down the rabbit hole I'd love to read up on some fundamentals of PCB layout and design and any suggestions would be appreciated.

Hi Vertigo, thanks for the suggestion you gave about the automatic puncer, I have been looking for it for a while but I didn't know what name to look for. I found it on Amazon, ordered and it's already arrived. It is easy and accurate. Franco I'm glad you found it useful and glad to offer something...

Hey Ryan, A couple of questions and an observation... The boards look great! Would you mind sharing the PCB vendor and the software package? I've got a project going and have been working my way through KiCAD but I don't love it. I was looking through your google photos and saw a rendering of the PC...

I get what you're saying and don't disagree with it. However, it doesn't seem ethical for me to post it when he's still clearly in the business of making them. He's approachable and friendly and his gear isn't outrageously expensive, especially considering that he's still going to great lengths to s...

It's not my place to guess what James' priorities are. When I bought my TGP, he said he was working on eight of them concurrently and received orders for half a dozen more before he delivered mine. To me that says that he's still in the business of making them so it doesn't seem right for me to publ...