Russ' Phase Linear 400 Ser I---TO BE WOPL'd

Did not survive the max output stress test. D10 in the left channel went at 305 watts, Q7 in the left and Q7 in the right went shortly thereafter. Replacing those components now....
 
laatsch55 said:
Did not survive the max output stress test. D10 in the left channel went at 305 watts, Q7 in the left and Q7 in the right went shortly thereafter. Replacing those components now....
Click to expand...

Isn't this a 400? I'm surprised this guy could crank the output that high. Was it clipping when it took a dump? You must've bumped up the rail fuse to get there though. Damn - over 300 watts per channel for something rated at a bit over 200 - another amazing feat.
 
It was well into clipping. Max will be about 260 for this one,
 
Amazing s/n and overall noise levels with the 2X WOPL system. I gotta get one of them.

How's that 700 complimentary conversion design coming along? On the cusp of release??
 
laatsch55 said:
Did not survive the max output stress test. D10 in the left channel went at 305 watts, Q7 in the left and Q7 in the right went shortly thereafter. Replacing those components now....
Click to expand...


You were deep, deep into the protection circuitry attempting in vain to protect against Lee if you took out D10 :-)
 
Gepetto said:
You were deep, deep into the protection circuitry attempting in vain to protect against Lee if you took out D10 :-)
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That's exactly the scenario Joe. Squealed like a pig before it went too. Actually I think I had it at 350 or so. There's a lag between turning up the input off the AP generator and that F@#%$& with me sometimes. I brought up the sig gen too fast.
 
Gibsonian said:
Amazing s/n and overall noise levels with the 2X WOPL system. I gotta get one of them.

How's that 700 complimentary conversion design coming along? On the cusp of release??
Click to expand...

More like spring Scott......
 
Around here they're known as a BABB (bad ass bus bar). There was also one of those in the care package.

Listening to the little bugger now.
 

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Ed Blackwood sent me a box of em this summer. They are 1/2" longer than the stock variety so sometimes they interfere.

Mike, it sounds remarkably like a 400, except lower, tighter bass, cleaner mids and better defined highs....


Scott, that was a very pessimistic approximation..
 
BTW, anything that takes out D10, will also take out the B- pico fuse on the backplane board...
 
Yes it did. The front end was still intact. First time that's happened with a diode open at D10.
 
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