The Amp Garage

Colossal, thanks, please contact RJ for me. Sorry it’s taken so long to get back. My email is mkane1650@att.net. Mark

I believe RJ may not be doing chassis’ anymore. Anyone know anyone else selling these chassis’, thanks!

Thanks, for some reason I thought RJ had stopped but I see his site is still up. Sent an email. Thank you for the heads up. Mark

Anyone selling TW chassis’?

That is a Kane rebuild. Jim is never done trying new things and Mitch has helped him as have another guy or two. It’s been back to me, Kane once as well when things got a little off kilter. All the changes were the same values with different companies or values.

Thank you for that, so basically do it just the way it's drawn. One heater wire to pin 5, the other to pin 4, connect them with a wire to pin 9 and then on to ground? do I have that right? thanks again

[quote="martin manning" post_id=413673 time=1592844229 user_id=4984] Some recent discussion on the send buffer and cable loss (https://ampgarage.com/forum/viewtopic.php?f=4&t=32162) got me looking into the frequency response. It's true that the buffer is not very well equipped to handle long cables ...

Thanks much, really appreciate that.

Is there a schematic of ODSR #60 floating around? Those clips really sound great.

Thanks. Glad to hear I’m not crazy.

The amp is an original late ‘70’s model that was updated by Dumble in the mid/late ‘80’s. I’m curious if anyone has seen the cathode and plate circuits setup as explained, basically backwards.

As anyone seen anything like this. The first and second preamp tubes have plate values on #1 of 180K with a 1k cathode, 130k with a 2k2 both caps 25uf25v. Tube 2 is 220k with a 2k2 cathode, 100k with a 1.8k, both caps 5uf/25v. So, with this in place the voltage on the first half of each tube is runn...

I haven't written this up. The main amp is pretty much a low plate skyline circuit with a 250k OD trim on the board and a 250K drive pot on the front. There's a loop a lator built into it with the power coming of the screen cap. The bias circuit is similar to the old 50 watt plexi model. Tap on one ...

Plate voltage is 390v and I have them biased to 9.5 watts per tube.

Long time gone and this one is sorta off the reservation. El84L power section with fixed bias. A long time friend approached me with this idea a while ago and I wasn't nuts about the idea but finally came along. Glad I did. Super cool amp, crazy smooth and you get such contact and feel from the amp ...