Search found 5 matches

by BoomTastic
Mon Sep 18, 2017 4:12 pm
Forum: Troubleshooting/problems/manuals/schematics
Topic: Difference between PF-1 and PF-2
Replies: 5
Views: 1595

Re: Difference between PF-1 and PF-2

Latest from CJ is that they don't have any stock of PF-1/PF-2 boards so no upgrade is possible. I've asked about the changes to the circuit schematic that might allow me to make my own modifications, but I'm guessing that will fall on deaf ears. So does anyone with a PF-2, that includes the phono st...
by BoomTastic
Wed Sep 13, 2017 7:03 pm
Forum: Troubleshooting/problems/manuals/schematics
Topic: Difference between PF-1 and PF-2
Replies: 5
Views: 1595

Re: Difference between PF-1 and PF-2

The transformers I have are from Lundahl, whom I believe have a pretty good reputation. They certainly work well with my classic Dennon DL-103 + Quad 33 system, but not so good with my Koestu + PF-1. I did contact CJ to see if there was any kind of upgrade path from the PF-1 -> PF-2 phono stage but ...
by BoomTastic
Tue Sep 12, 2017 3:41 pm
Forum: Troubleshooting/problems/manuals/schematics
Topic: Difference between PF-1 and PF-2
Replies: 5
Views: 1595

Re: Difference between PF-1 and PF-2

In the meantime you can get a MC to MM transformer which should alleviate the problem. Something like this: http://www.needledoctor.com/Ear-MC4-Transformer As I say above, I've tried MC step up transformers but they seem to loose a lot of the soundstage compared to the direct phono connection I als...
by BoomTastic
Tue Sep 12, 2017 6:36 am
Forum: Troubleshooting/problems/manuals/schematics
Topic: Difference between PF-1 and PF-2
Replies: 5
Views: 1595

Difference between PF-1 and PF-2

I have a PF-1 but I don't like the extra noise that I get with using it's MM stage with my MC cartridge as I have to turn the volume up to 11. I would like to have the phono stage from a PF-2, with the extra gain for MC cartridges. Does anyone have a schematic of the PF-2 that would show the differe...
by BoomTastic
Tue Sep 12, 2017 6:13 am
Forum: Member Presentation Thread
Topic: Hello from England
Replies: 1
Views: 639

Hello from England

Hi, I'm a long time CJ fan and owner of a PF-1 since I bought it new in the early 1990s at dollar for pound pricing. I know it is a low-life FET unit but I'm happy enough with the sound, and the power amps are fully tube based (although not CJ units). I'm just getting back into hi-fi fiddling since ...