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J
But when I took them out the drive transister holes in each row look to me like if the output transisters are facing up then the drive transister should be facing down. So I am confused at what is going on .
J
Phase linear 700 1st series question.
I have a 700 series 1 amp and looking at the power and drive transisters there are 4 rows and in first row. Closest to the fuses and speaker terminals the 5 output transisters and the bottom drive transister are facing the same way , the writing is up and facing about 1 o clock . In the next row the writing in facing down and pointing to 7 o clock . The 3 rd row is facing u
Tripplanner Pk
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J
Question, I have a phase linear 700 first series amp , I have 4 rca410 transistors for the bottom 4 rows, but I was wanting to know if I can use 10 of PL- 909 ( 466 stamped on top ) ( 7208 stamped on bottom ) blue stamp.. and also use 10 of
Phase linear xpl- 909 ( 466 stamped on top ) ( 732 stamped on bottom ) blue stamp. I think I read that this combo is only 1 of the 2 exceptions . Thanks for your help
Blindsite
Navy veteran, audio equipment accumulator from Visalia, California.
Phase Linear, Soundcraftsmen, McIntosh, Marantz, Emotiva, Integra, Rane, BMS, EAW, Sansui, Polk, Audio-Technica, Furman
wattsabundant
The web site is somewhat outdated. If you have questions let me know.
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SG700II
SG700II
Thank you for reaching out.

I have a few questions.

1. Does the relay also function as an amp startup relay ?
2. Do you have a parts list for digikey?, the mouser one has a few items that are no longer available.
ElectronMan
The PL 3000 Pre-Amp, I've got it back from Rolland Barr, he gave it the complete rebuild, good as new total cost with shipping just under $1,000. I'm looking around for some cables to connect it to one of my PL 300 Amps and Klipsch Heresy I speakers. So, I have two complete functional PL systems with a third system almost repaired, have two boards to replace on PL 400 Series II then that will make three complete unit
Rat44
Feel free to call me with any questions.
I've only been licensed a couple of years ,still a newbie to all this .
But I have learned a lot from others.
253-273-4883 Dennis
ElectronMan
I've been very busy with work and it's been several years since I've unpacked my PL equipment since purchasing a house. Just purchased another PL-300 II to add to the collection. Need to go back into the PL 400 II to see why it's squealing, did an upgrade on main caps and after move it just sat there. An anyrate, will p ost pictures of PL equipment as I get it unpacked and setup. CHEERS!
wattsabundant
You got lucky with the open 2.7k resistors. When they fail the amp usually dumps DC into the speakers. Also the feedback cap and several of the display caps are failure prone.

I've got a drop in relay board to protect speakers against amplifier failure. It bolts on to the binding post so no drilling required. You can see more details on EBAY. Don't buy it there. I have to add in the various EBAY fees.
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