Sutt's "Fugly One" WOPL Transformation

[Gepetto]

Nice work Jer. She is no longer a 2 bag date. She is now quite 'purdy'. And she puts out too I bet (watts that is).

 

[Gepetto]

Everything looks so awesome......looks like she needs some updating to the knobs....if only there were some that would set her off even more !!

Tune in Tokyo...

 

[ksrigg]

Watts she gonna do? Jerr should be posting some results sometime...

I also located some knobs on eBay.....38mm diameter.......and 22mm depth. Set screw for 6mm shaft...does this sound like it will work??

 

[jbeckva]

LOL yeah soon as I can again tear myself away from listening LOL. Got those final touches done about 20 mins ago. Sounds good..

 

[ksrigg]

Turn off the breaker to the listening room.........at least for a few, and then turn on the power to run some tests....or you can just send her to me.. I NEED her!!!!! BAD!!!!

I wanna hear her!!!!

 

[ksrigg]

Tune in Tokyo...

Do you mean "Tune in Hong Kong"?

Joe, you are the man !!

 

[ksrigg]

I've got to be an early riser tomorrow,,..we will talk in the morning........or afternoon...

I hope she does well overnight.....

 

[ksrigg]

Any new news?

 

[jbeckva]

Yep, she's on the bench.

 

[ksrigg]

so...she is a bench slave now?

What does she have?

 

[jbeckva]

Guts, she has guts.. lol. Told you I was going to torture it..

 

[jbeckva]

FR db measurements. 6 volt output dialed in..

Left is frequency, right is dB. Not too shabby...

0 0.01
1000 0
2000 0
3000 0
4000 -0.01
5000 -0.01
6000 -0.02
7000 -0.02
8000 -0.03
9000 -0.04
10000 -0.05
11000 -0.06
12000 -0.08
13000 -0.09
14000 -0.11
15000 -0.12
16000 -0.15
17000 -0.17
18000 -0.18
19000 -0.21
20000 -0.24
21000 -0.26
22000 -0.29
23000 -0.32
24000 -0.35
25000 -0.38
26000 -0.42
27000 -0.45
28000 -0.49
29000 -0.54
30000 -0.57

 

[jbeckva]

Watts.. I lost my "nerve" at 510 @ 1khz, both channels driven into 8 ohms.

yowzas..

 

[jbeckva]

Picture proof LOL.. Yeah, I need a tripod BUT normally I'm not TOO nervous hahah..

 

[laatsch55]

At what distortion Jer??

 

[jbeckva]

At what distortion Jer??

Was right around .06 or so. That's one thing I need calibrated - the set shows a little bit of an offset when the amp is not in the picture, so figure even less than that.

 

[laatsch55]

Damn good number...

 

[laatsch55]

When i ran a hottie like that it was usually 1% at that 500 number.....

 

[jbeckva]

Shocked the shit out of me LOL! That's unweighted, if I understand the term to say that you setup with all filters off?

 

[oldphaser]

Phase Linear as well as a lot of other manufacturer's measured the "frequency response" of their power amplifiers at 1W. So 1W into an 8 ohm load would be 2.83V output. (NOTE: An input voltage of around 78-81mV should get you there.) Phase Linear's frequency response spec was +0/-1dB at 1W. A White Oak Audio Rev E board with back-plane boards should go down to 4 or 5Hz easily and top out at around 42kHz +0/-1dB. The Phase Linear distortion spec is from 20Hz to 20kHz at rated output. A 700 series 2 amp rated at 360 watts a channel into a 8 ohm load would be 53.66V. The distortion spec will look pretty good at 1kHz. You should be checking the amp at 20kHz both channels driven to rated output. Then let us know what you get. Worst case scenario for most amplifiers will be at 20kHz. The spec for a series 1 700/700B is +/-.25%. The spec for a Phase Linear 700 series II amp is +/-.09%. NOTE: Phase Linear's 700/700B and 700 series II service manuals also allowed for the use of a 80kHz filter on the distortion analyzer.