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Hi Lee, congrats on your new toy. I am very familiar with Jeff' s equipment ( I believe I have had about 2 dozen various JR amps and preamps over the past 3 decades or so) . Met Jeff when I lived in Colo. before he started Rowland Research building amps and preamps back in the early 1980s. Got...

Thanks so much for your reply. The schematic of the crossover for the SM-122 speaker shows the smaller level control to be 5 ohm, 5 watt and the larger rheostat to be 5 ohm 15 watt. So, they will work for me and if you want to let them go, I could use all 4 of them . Just let me know what...

My brother recently gave me a pair of Infinity Qa speakers and I have decided to update them to the Qb model. Picked up a couple of Phillips 5060 mids on Ebay and also have a detailed schematic of the Qb crossover. Most of the parts for the xover are readily available but I am having a devil of...

BTW - The same language is present in my 700B manual so as Joe indicates, Phase Linear was obviously stating some operating characteristics regarding the amplifier temperature that just were not technically factual or supportive.

I have to agree with Fishoz - my PL 400 (original , not a reprint) manual says the following: "Due to special high energy /high voltage technology, the transistors in the Phase Linear 400 can function properly at temperatures over 200 degrees centigrade. Now, whether or not this is technically...

OK - here is a pic of the good and broken rca jack assemblies. It looks like the plastic sleeve of the broken jacks deteriorated or maybe cracked with repeated use and broke away from the jack.

Hi Guys, just took ownership of a Phase Linear 2000 preamp (original series 1) and right off the starting blocks I noticed a couple of the input rca jacks were loose. Upon opening the case, I found pieces of black plastic which were originally part of the plastic casing for the rca jacks. So, I...

Thanks Joe - good to know. So the series 1 and 2 are for the most part the same amps with just the displays different ?

Thanks Dennis ! While I am sure that the Clair amps would be nothing less than outstanding as well, I am actually holding out to build a pair of premium chassis WOPL 400 amps ( once Joe gets the premium 400 chassis project completed). I want to go all out and use Joe's chassis, upgraded...

Paula and Mary Yes, Perry does do 1st class work and just to add testament, my Christmas present to myself was two fully rebuilt WOPL700B amps from Perry last month. As many of you know, I got into this Phase Linear White Oak club by rebuilding two PL 400 amps this Fall. My original desire...

OK - so here is what I did. I picked up a used Furman Elite PFi power conditioner. It has unswitched and also switched high current outlets for power amps that can be activated by a 12 volt trigger. Connected the 12 volt out from my Pass labs X1 pre to the 12 volt input on the Furman and both...

Very nice Perry ! I am sure both Mary and Paula will be very well received in their new home. ;-)

Hi Folks, looking for any advice regarding a power up device for the WOPL400 amps. Because the amps have no on/off switch, I would like to remotely power them up ( 12 volt trigger) or (?) independent of the switched outlet in my preamp. Anyone know of a conditioner/power unit that would work or...

So where were you Dennis, when I screwed up the positions of the last 2 transistors on my 1st WOPL400? That's when I could have really used a good NURSE! :wink:

Thanks Joe - you know that this would have been a lot more difficult without your help and advice. The 2nd amp went much more quickly and smoothly ( as you indicted it would). Actually, if I hadn't mixed up those last 2 NPN/PNP transistors on amp 1, the whole project would have been without...

Del and Pam So, after embarking on this project over a month ago, I have finished my 2nd WOPL400 (Del). Also found out that the original DCP board for Pam was missing a cap so I used one of the caps from the WOPL conversion of Del's DCP board to supplement the missing cap on Pam's board. So...

Thanks Lee ! I will check them out. But regardless, the amp is performing without any issues with my better preamp so I am pretty confident it is functioning as designed. On another note, just waiting on a DCP board and a couple of other parts and Del (second WOPL400 rebuild - Del on the...

After more investigation, it appears that 2 of my older preamps ( Citation 11 and 17) are the only preamps that are in the chain when the dropouts occur. I have been using the WOPL400 for the past week with my Benchmark preamp/DAC with no problems whatsoever. Also had no problems using the WOPL...

This is good to know. I am attributing my issues to "operator error". Not the 1st time and I am sure it will not be the last.

Mark, I completely agree with everything you said. The faulty connection appeared to be with the AC input connector and I would prefer to be able to easily swap out boards/etc as well. With all of the DCP boards in the field, I am sure if this were a continual problem, then Watts Abundant...