fitz43's Phase Linear 3300 SerII Pre-amp

[laatsch55]

This one is no stranger to the Casa-de-laatsch. It was Larrt's and before that mine. I must say ,,, IF ANYBODY BUYS ANYTHING FROM DOUG HERE, BE PREPARED TO BE SHOCKED!!!! I HAVE NEVER, EVER SEEN ANYTHING PACKED SO WELL, EXCEPT FOR ED BLACKWOOD!!!!!

I'll have pics later. Dougs complaint, no on/off muting. In this design, a solid state relay consisting of 2-MPSA16's and 1-2N5086 and associated caps and resistors cause a ten second delay at turn on before switching outputs closed. On power down, outputs are immediately shunted to ground. Should be a 2 hour project Yep, he really did say that out loud.

 

[NavLinear]

Are you saying that Ed is well packed?

Does this mean that you're installing an aftermarket board in the 3300 II? You must elaborate as you've captured my curious side.

 

[laatsch55]

Na Nav, Ed packs well but is not well packed. I have fixed this bugger though. After exhaustive study of data sheets , I came up with some subs for the MPSA 16's and the 2N5086. I went with 2N5087 for the '86 and 2N5088's for the MPSA 16's Replaced all resistors, slightly out of spec, left the caps alone, they were great. Replaced 2-4.7K res, 2-100K res, and that was it.


Dpoug there is no more noise at turnoff and no more snap, crackle , pop at turn-on. there is 2 seconds of silence at turn-on, then a very attenuated signal for 3 seconds, then ramps up to full output.

 

[laatsch55]

And Doug, you know you are violating the first tenet of separates, Pre-amp on first, amp on last. Amp off first, pre-amp off last...

 

[orange]

I don't even separate colors and whites in the laundry...

 

[NavLinear]

I see some putty hairs in there. I almost said something else but restrained myself for once.

 

[laatsch55]

Why?? An unrestrained Nav is much funnier. Yep, everything gets vacuumed for putty hairs.

 

[jbeckva]

Why?? An unrestrained Nav is much funnier. Yep, everything gets vacuumed for putty hairs.

'Cept where you need a cat whisker diode, of course..

 

[laatsch55]

Haven't needed one of those for awhile///////

 

[laatsch55]

The test setup is totally separate from the rack. Got Ken's Lickety Split, Doug's Diane Pre, an Onix CD-1 and straight to the horns. The 3300 is as close to the Spec 1 than anything else I've had in here. The pre section from a Kenwood KA 4002 had a spooky good phono section i had once. Maybe have to put Larrt's SP-12 right up there too. Catching some mellow " Phase III" this am.....

 

[fitz43]

I see some putty hairs in there. I almost said something else but restrained myself for once.

I don't think they came from this household. The two that let us share the same abode with are black.

 

[fitz43]

Na Nav, Ed packs well but is not well packed. I have fixed this bugger though. After exhaustive study of data sheets , I came up with some subs for the MPSA 16's and the 2N5086. I went with 2N5087 for the '86 and 2N5088's for the MPSA 16's Replaced all resistors, slightly out of spec, left the caps alone, they were great. Replaced 2-4.7K res, 2-100K res, and that was it.


Dpoug there is no more noise at turnoff and no more snap, crackle , pop at turn-on. there is 2 seconds of silence at turn-on, then a very attenuated signal for 3 seconds, then ramps up to full output.

Great! thanks.

 

[fitz43]

And Doug, you know you are violating the first tenet of separates, Pre-amp on first, amp on last. Amp off first, pre-amp off last...

It's all off the same receptacle and I wasn't using the power switch on the WOPL as I heard that they weren't up to it. Is it ok to use the power switch for turning them on and off?

 

[laatsch55]

They've been doing it for 40 years. Once in awhile they'll take a dump, I have a few new ones though...

 

[laatsch55]

Doug--- Tracking number Fed-Ex---962223115001590. It's going out in the morning.

 

[fitz43]

Doug--- Tracking number Fed-Ex---962223115001590. It's going out in the morning.

Great! Thanks.