Lyle's Phase Linear 700 Ser I, to be WOPL'd

[Gepetto]

Looks like you are doing 92dB SNR at 10W, which translates to ~106dB SNR at rated 350W output. Not bad at all.

 

[laatsch55]

Yep, darn good for the old Ser I.....Joe what's it gonna take to go lower, outboard toroid power supply??

 

[laatsch55]

Looks like you are doing 92dB SNR at 10W, which translates to ~106dB SNR at rated 350W output. Not bad at all.

I thought the SNR was world class for an un-weighted measure...

 

[laatsch55]

Dennis, you are too much man..............

 

[Gepetto]

Yep, darn good for the old Ser I.....Joe what's it gonna take to go lower, outboard toroid power supply??

No, that is broadband Lee, you would see it peaking at 120Hz if it was power supply. At these levels we are down to a death by a thousand cuts, noise figure on the transistors, resistors etc.

We should be able to eek a little more out of this but it will take some work. That is world class SNR though.

 

[Gepetto]

I have been toying with reducing the circuit impedances on the front end diff amp, we are not quite optimized for the lowest noise figures on the MPSA18 yet. Close but not fully optimized.

 

[laatsch55]

Sneaky bugger.... Got a package headed my way??

 

[laatsch55]

Listening to it now, sounds Very, Very nice.

 

[Gepetto]

Sneaky bugger.... Got a package headed my way??

Soon Lee, soon.

Last part expected tomorrow, if UPS cooperates.

 

[laatsch55]

Ah...... nothing like building a little anticipation...

 

[Gepetto]

Listening to it now, sounds Very, Very nice.

I bet it does Lee. I have to get my 700B back into the rotation in the lab, after I clear some clutter from current projects that is.

 

[Gepetto]

Ah...... nothing like building a little anticipation...

I cannot complain too much Lee, I am actually a bit ahead of schedule because MicroPlastics delivered earlier than they predicted (good folks). Else I would have been out until early July.

 

[laatsch55]

Joe, aren't ya Jonesin for that WOPL sound?? Took it to Mach 8 after a little break in. Shpongle remixed never sounded so good. Still got some cap cookin to do, should be fantastic when done......sonic nirvana is a very nice place to be.......

 

[laatsch55]

Looks like you are doing 92dB SNR at 10W, which translates to ~106dB SNR at rated 350W output. Not bad at all.

Rated output on this one is 456.43 at 1% THD & N. Sooooooo, SNR then would be......

 

[laatsch55]

Joe, Stephen in Phoenix , who has the Pig right now, has a Threshold pre amp with the battery powered option. He fed the Pig battery powered signal and he said the Pig followed the noise on DOWNNNNNNNNNNNNNNNN.....
Then he invited a few friends over and had all his amps makin the meters dance (except the Pig, it was hid) and had em guess which amp was driving the load, the majority chose his 15K Mark Rowland.. He said you should have seen the jaws drop when I picked the Pig up from behind the couch. There's still a couple that thinks he's F*&^%$# with em...............

 

[laatsch55]

We're about to get us a suite at the CES-Las Vegas, and show off some stuff in the NFS room (not for sale ). He said after that you will not be able to keep up.....

 

[Gepetto]

Rated output on this one is 456.43 at 1% THD & N. Sooooooo, SNR then would be......

Only 107.6dB Lee

 

[laatsch55]

Well shoot......

 

[Gepetto]

Joe, Stephen in Phoenix , who has the Pig right now, has a Threshold pre amp with the battery powered option. He fed the Pig battery powered signal and he said the Pig followed the noise on DOWNNNNNNNNNNNNNNNN.....
Then he invited a few friends over and had all his amps makin the meters dance (except the Pig, it was hid) and had em guess which amp was driving the load, the majority chose his 15K Mark Rowland.. He said you should have seen the jaws drop when I picked the Pig up from behind the couch. There's still a couple that thinks he's F*&^%$# with em...............

That is pretty funny Lee.

 

[laatsch55]

Yeah it is, until ya think of the cost per watt that just got kicked to the curb by the lab Pig. I hadn't even optimized the wiring yet......