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Has anyone tried using the ON Semiconductor MJ15022G as an output driver for a 400 amp? Looking at the data sheet it looks quite similar to the factory drivers unless I'm missing something. I have one that uses a PL-36 board and I will be using MJ21196G for outputs. Recommendations please? Dave

So I'm working on one of my Phase Linear 400 Series 1 amps, getting ready for installation of a dc protection relay, and did the current sharing test. All checked within 20%, but I decided to try to get it closer by swapping out transistors from another amp. I pull one and checking it with my...

I'm looking to add subwoofers and an active crossover to my new-to-me Dahlquist DQ-10 speakers. Can someone tell me what a good price would be for the Dahlquist DQ-LP1 Active Crossover? I have the schematic for it, so although it would be great to find one in prime condition, a fixer upper isn't...

Hi guys, First off, Happy Veteran's Day, and a big THANK YOU for your service to any and all of our service veterans out there...I can't thank you enough. On the subject of "The only stupid question is the one that is not asked"... Is there a way that I can get any meaningful distortion...

I have a Luxman 350 solid state pre that I bought last winter and have replaced all the electrolytics with audio grade Nichicon caps. I also refinished the cabinet, which had water stains all over it. Sounds nice, but I have yet to put it to use with my upgraded speakers. Has anyone here had...

Hey all, I've got two Phase Linear 400 Series 1 amps. For now, I want to make one very good one to drive my new Dahlquist DQ-10's. I have my DC protection relay board shipping from Don tomorrow, and I want to get one of my amps kicking some serious butt. My output transistors are all blue...

Hey guys, I am listening to my Dahlquist DQ-10's being driven by my rebuilt SX-1250, and they sound very nice. But I know they can use more power. Downstairs on the bench I have a couple of PL 400 Series I amps that are waiting for DC protection boards from Don Imlay. I placed my order this...

Hey all, I got these last week on CL and before I could really get comfortable listening to them, the woofer surrounds let go So I just got done re-foaming them and whoa, baby...these are really making me smile. I know that they're supposed to be lacking in bass, but I boosted the area of 30 to...

Hi everyone! My name's Dave and I'm a retired ee in the middle of Michigan. Originally from Long Beach Ca. I got into audio in the early 70's when I worked at Radio Shack, and I've been into music my whole life. Classically trained on trumpet, when I was 16 I decided I couldn't become a rock...