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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...

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...

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...

I need 4 non functional VU meter cases from the PL400 series amps. I DO NOT need the VU meters, only the meter enclosures as I am modifying a couple of 400 series amps to operate with LEDs but not the meters, so if anyone has some that they are no longer using due to damage, age, or whatever...

Hi Folks, I originally posted this request on AudloKarma and NavLinear suggested I might join this site for some additional help (thanks Navo). Basicaly, I had a PL 400 amp from 1978 through 1982 and it worked flawlessly for all 4 years. The amp had been out on the market for enough years to...