The Amp Garage

I finally started using step bits a few years ago & they DO work pretty well, not sure why I had avoided them previously..? Anyway, I have purchased from a few sources & I like this particular one the best, as the small 1/32" graduations are especially nice for smooth cutting & there is a sort of me...

I have not tried it myself, but have taken note that often sag resistors for SS rectified amps are inserted between the transformer & the diodes.

See Vox schematic below, R72 & R73:

Get yourself one of these. Thank you, I have a Fluke 117 I think does a good job... In spite of having a really nice DMM, I would agree that those little testers are great. There is no range or type of measurement to set (cap, res, diode, etc). You just hook up the leads, hit the button and it figu...

I have been infinitely curious about these 7pin beauties - 6005 is synonymous with 6AQ5 if I’m not mistaken. There’s enough testimony out there stating how glorious these sound for me to have bought some 7 pin sockets and a pair of 6AQ5s but the train always stops there as I have had difficulty fin...

This thread & info is timely for my own project that I am just getting measurements on, after firing it up for the first time over the weekend, & trying to reconcile expectations vs real numbers. Not to hijack, but I built a Monarch clone (from TAG thread/resources, https://ampgarage.com/forum/viewt...

sluckey wrote: ↑Mon May 19, 2025 1:15 pm The website is gone.

Wow, sorry to hear you took it down.


It was a great reference, for both visual info (pics), & the related documentation.

Lauri, That assumes they've setup the site to even allow this. Since it's shared, there may be 100 different sites on the same server. They may or may not even allow htaccess settings at the site level. I've not spent a ton of time digging into this mainly because I already have volunteered a ton o...

xtian wrote: ↑Fri May 16, 2025 11:49 pm Likely the PI is working as it should but signal is not arriving at input grid. Confirm working PI voltages. Confirm continuity from grid to 1M/0.1u. Have a scope? Trace the signal.

This was my guess too, before reading this reply. I would start working backwards from that point.

Thanks for updating.

I have a new-to-me reverb circuit I am about to try out, these ideas will be useful in tweaking for recovery noise.

These guys make DIY flatpacks of several cabinet designs, primarily for bass I think, but might do custom work too..?


https://www.speakerhardware.com/


Where are you located?

If you get stuck, send me a PM

I know that Merlin's grounding chapter has been already mentioned on page 1 of this thread, but your quandary reminded me of the hum-block circuit that he included towards the end of that chapter, basically to allow safety grounding to chassis, while keeping things isolated enough to discourage grou...

solderhead wrote: ↑Sun Apr 20, 2025 8:08 am The Paypal account for that merchant seems to be blocked.

I tried to buy a Deluxe Reverb kit probably a year+ ago, same issue, then decided I didn't really need it anyway.

Likely never resolved since then..?

I have been happy with the Antek toriodal transformers. The 50VA units (at least the ones I have used will fit into a 1U chassis, just barely) Something like this; https://www.antekinc.com/as-05t200-50va-200v-transformer/ The pic below is from a 6G15 reverb that I built into a standard Fender chassi...

What is the resistance between the plate filter cap (460v) and screen filter cap (45xv?!)? Is it just a low-resistance choke (e.g. 110 ohms, 3h, marshalll style choke?) 6k6 and 460v might work with JJs but other 6v6s may redplate. If you have just a choke there at the moment, you can add in a dropp...

Thanks for adding that, I wondered about the recovery noise & was hoping to hear that that your 2-stage recovery circuit might have mitigated some of it. I have found the reverb recovery noise to be the perpetual problem child in the amps I have built. Very typical amounts, but it would be nice if t...