Lee's Personal 700 Series I, soon to be a WOPL 1000

[laatsch55]

The wife is uneasy with the Sutton project underway. we will not be without a WOPL she allows. So, I have started stripping the chassis. This will get tore down to a bare backwall , all sockets out, all chassis wiring out, and replaced with silver wire, new emitter resistors, new buss wiring, the works. No pots, no switches, only one set of RCA's, clean, quiet, powerful. We'll see how quiet this one can be.

 

[Rex Everything]

Now that's what I'm talking about! Sounds like it's gonna be a sweet amp!

I need to win that Bryston, then get a WOPL 1000+ and have a big shoot out with my David Belles designed OCM 500.

 

[laatsch55]

Whats an OCM 500?

 

[Rex Everything]

Whats an OCM 500?

This is some of the only info out there on them and it's not much

http://sites.thestar.com.my/audio/story ... 9/19belles" onclick="window.open(this.href);return false;

200wpc SS beast!

 

[Web Police]

Looks cool, I'll follow the thread till it gets 10 pages.

 

[laatsch55]

Looks a lot like the inside of the Bryston.

 

[laatsch55]

The White Oak Rev "C" board---HD edition. And the recipient of said technological advancement.

 

[mlucitt]

Lee, how come you don't drop those TO-5's all the way down on the board? It seems to me that the three stilt legs are acting like little direction finder antennas to latch onto some 60Hz buzz.

Also, I was thinking that these amps are turning in pretty good specs with a re-stiffened power supply, Joe's board, and new MJ drivers and outputs. Don't you think it would stand up to a modern amp in terms of THD and frequency response? Of course, the sound is subjective; but we could start getting people to listen to the amps if we could publish specs as good as Krell, Levinson, Crown, or McIntosh. What do you think?


Lee, emitter resistors on the way to you.

That OCM is half a WOAPL 1000!

Mark

 

[laatsch55]

Have I been remiss in emitter resistor restoration and replacement??

 

[mlucitt]

They're coming to you whether you have been remiss or not.

 

[laatsch55]

Lee, how come you don't drop those TO-5's all the way down on the board? It seems to me that the three stilt legs are acting like little direction finder antennas to latch onto some 60Hz buzz.






HEAT!!!!!!!!!!!

 

[laatsch55]

Also, I was thinking that these amps are turning in pretty good specs with a re-stiffened power supply, Joe's board, and new MJ drivers and outputs. Don't you think it would stand up to a modern amp in terms of THD and frequency response? Of course, the sound is subjective; but we could start getting people to listen to the amps if we could publish specs as good as Krell, Levinson, Crown, or McIntosh. What do you think?


Funny you should mention that, cause Joe is working on that as we speak, I am not at liberty to divulge further, but, it's typical Joe stuff. He and Ed had their first phone conversation the other day and Ed was finally able to get Joe to rock off center in the DC Protect PCB area. Joe'sa got some cool ideas for that too.

The Power supply built in the "Hmmmm....." thread was an attempt to get the power supply's contribution to the noise level to a bare minimum. That power supply will be temp wired in to the 700 Ser I I'm doing for myself and be in a before and after format.

 

[mlucitt]

Nice. I'm going to do some temperature measurements on the various "heat producers" How would you recommend loading a WOAPL 700 for a consistent set of measurements over, say 2-3 hours?

 

[laatsch55]

The neighbors copy of "The 1812 Overture" Played at mach 8 with you BAJBL's pointed out the windows and doors.

 

[mlucitt]

I'm moving the speakers toward the windows right now...

 

[laatsch55]

Or, a 125MV in put of a 1KHZ sinewave.

 

[laatsch55]

Bout got the chassis stripped...../..

 

[mlucitt]

I like how it stands on the transformer bell. What is the "110" written on the transformer? 110V versus 220V? I keep forgetting that the early PL700 had two sets of inputs and the PL700B only had one pair.

Nice work, Lee.

 

[laatsch55]

Yep, I'm good at tearing shit apart.

 

[pennysdad]

So, where are we with this?
.... or has this been shifted to somewhere else?