Search results

Roccus asked me for assistance with a crossover, so I thought I would share my opinion so everyone could see; I would suggest making a clone of the Altec crossover that was designed for your driver and horn. You'll need three parts for each cross-over (left and right): Supplier: Parts Express...

Has anybody used this? I downloaded it last summer and it is great. Takes awhile to learn, but it seems to be fairly accurate using an old Radio Shack sound meter. There is even a calibration file you can download to make the Radio Shack sound meter perform better than it should. I compared...

Does anyone have original PL14A or PL20 drive boards in decent shape? Working or not working is OK. Thanks, Nick

This should help with the write up on amp test procedures. I apologize for the "crooked scan". It is a copy of a copy.

What is the going rate for a 400 power transformer and one Dixon meter?

I have been experimenting with some easy modifications on the PL36 driver board. My main interest has been to modify the pre-driver and driver circuit to reduce crossover distortion that, in my opinion, has always been too high in the 400II and 700II amps. Here is some history of my “test...

I have finally had a chance to design a new driver circuit for the 400 and 700. The 400 and 700 make excellent project amps because of the way the chassis is laid out and the power transformers are robust. The latest power supply caps pack more Farads, so updating to more capacitance is easy in...

If anybody needs a PL36 driver board for a PL Series II 400 / 700 I have a few extra that I can let go for cheap. I needed a driver board for a 700II that I was restoring and I had some made. These are bare boards only. You can stuff them with your own preferred parts.

Hello everyone. Recently, while going through my ever increasing stash of electronic hobby parts (I swear these things breed like Tribbles when I am not around), I found items I had forgotten that I had! Imagine that. Fast forward a few weeks... while flying to "Vegas for the annual CES, I came...

Laatsch55 / Gepetto, Since I am new here, I was wondering how much testing has been done on the WOA PCB. Have you done an FFT on it? If not, I could run it on my AP with digital option and post the graphs for additional archive information. I'd be glad to do it. Obviously, I would need to...

Listening to the 555 (original, not a 555II) and it sounds pretty good. Does anybody else around here have one? If so, how do you think it compares to PL for sound quality?

Anybody here dabble in the big tube amps? 211 or 845?

I just procured a set of Usain Bolt signature HP. A buddy works at the company who develops them. Not really my style, but they were free! Sound quality is not too bad, little boosted on the bottom and too much on the top.

I need one 400 meter. Not sure which one I need because I am 38k feet in the air! There were very early ones, then later ones if I recall. Just thought I would throw out the request. When I get back home, I'll see which one I need.