Ken Nelson's Phase Linear 3300 ser II Pre-amp

[Gepetto]

To thpose of you who have attempted to fix a 3300, the trace between R7 and ground IS SUPPOSED TO BE CUT, JESUS!!!!! Here I thought it was another case of the 3300's sorry ass traces giving up the ghost. Well live and learn. The AP is warming up./...

You probably ripped everything out trying to find it too.

 

[laatsch55]

Well of course. I finally just left my mini grabber neg on ground and started pokin around. I knew R7 was tied to ground through C10, but it wasn't acting like it, so I started down that road, didn't take long after that.

 

[laatsch55]

Plus 20.45 and Minus 20.25

 

[laatsch55]

sHOULD i STILL BYPASS THE POWER SUPPLY PINS WITH THE .047UF POLY CAP ON ALL 4 OP AMPS.?

 

[laatsch55]

Update, Vee1, Vcc1 =/- 18.58 volts DC. Vee2,3,4-Vcc2,3,4 = +/- 15.64 volt DC.

 

[Gepetto]

Update, Vee1, Vcc1 =/- 18.58 volts DC. Vee2,3,4-Vcc2,3,4 = +/- 15.64 volt DC.

Thanks Lee, the absolute max on the op amps is +/-18V for a total of 36V from V+ to V-

That is why I was asking.

 

[Gepetto]

sHOULD i STILL BYPASS THE POWER SUPPLY PINS WITH THE .047UF POLY CAP ON ALL 4 OP AMPS.?

It will only benefit it Lee if you can do it.

 

[laatsch55]

I can do it. Got the room, got the caps, got the motivation, Between pins 4 and 8 on the back...

 

[laatsch55]

What better way to check the Phono section than the Phase Linear FACTORY RIAA curve tracer. The actual unit used in the test department at the factory.

 

[laatsch55]

Current test set up,

Source------Onix CD-1
Amp--------My WOPL 1000
Pre- the subject




Givin the Super K's some shit....

 

[NavLinear]

Is that a kitty bed?

 

[NavLinear]

What better way to check the Phono section than the Phase Linear FACTORY RIAA curve tracer. The actual unit used in the test department at the factory.

Damn dude - didn't know you scored that. You must give us more details of its capabilities. Too fc#king cool.

 

[laatsch55]

First impression, F*&^%$ quiet , like no background noise. It tested at 153MICRO volts on the left and 173 Microvolts on the right. If Jani did the A/B test between it and my Spec 1 , I don't know if I could tell the difference, and that's saying something.
Thanks Joe, your guidance created an even better pre than I could have, appreciate that. I'm sure Ken will too.


Kenny you're gonna love this..

 

[laatsch55]

Is that a kitty bed?

Deluxe model II scratcher...

 

[laatsch55]

Damn dude - didn't know you scored that. You must give us more details of its capabilities. Too fc#king cool.

Bought from an ex employee...

 

[NavLinear]

First impression, F*&^%$ quiet , like no background noise. It tested at 153MICRO volts on the left and 173 Microvolts on the right. If Jani did the A/B test between it and my Spec 1 , I don't know if I could tell the difference, and that's saying something.
Thanks Joe, your guidance created an even better pre than I could have, appreciate that. I'm sure Ken will too.


Kenny you're gonna love this..

Cool - what was dragging the voltage down? We must know!

 

[Ken.nelson0317]

First impression, F*&^%$ quiet , like no background noise. It tested at 153MICRO volts on the left and 173 Microvolts on the right. If Jani did the A/B test between it and my Spec 1 , I don't know if I could tell the difference, and that's saying something.
Thanks Joe, your guidance created an even better pre than I could have, appreciate that. I'm sure Ken will too.


Kenny you're gonna love this..

Yes, I'm sure I will. Yes and I thank Joe too. I love my little Lickety Split and I have no doubt with this pre everythings gonna be even better.

 

[Elite-ist]

The PL 3300 Series II preamplifier is going to be nice to use, Ken. For someone who has a full compliment of Phase Linear gear it goes without saying that it belongs in the stereo rack.

Lee: Another informative build and that Phase Linear RIAA Curve Tracer is a unique piece of test equipment. Most test equipment doesn't look as good as the component it is meant to test!

Nando.

 

[laatsch55]

Cool - what was dragging the voltage down? We must know!

I fixed a trace that had been terminated on purpose...

 

[laatsch55]

Amen Nando. I was told that curve tracer was built in house at Phase.