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

[laatsch55]

DCP wired up, some wire discipline taking place. Board next, digging out the stash of silver wire of FaboNav's to do the hookup to the board.

 

[laatsch55]

Right side done. We'll be testing in an hour....

 

[laatsch55]

Board wired in, outputs and heatsinks next....

 

[Gibsonian]

Back to assy warp speed I see, you must be fully recovered.

 

[laatsch55]

Slept almost all day yesterday. Outputs and drivers in, time to see if she blows or goes!!!

 

[NavLinear]

Board wired in, outputs and heatsinks next....

Have you tried out the transistor pads yet? I'm curious if they'll work for you - I'll build some more if they do.

 

[NavLinear]

Nice job on the zobel network. I like how you paralleled the two resistors together and a nice touch with the cap - very shapely. Did you have to modify the resistor leads for the through-hole?

 

[laatsch55]

Nice job on the zobel network. I like how you paralleled the two resistors together and a nice touch with the cap - very shapely. Did you have to modify the resistor leads for the through-hole?

Ni Dennis, it's tight but doable. The transistor standoffs are perfect!!

 

[laatsch55]

TESTING 1,2 TESTING1,2 It's on the AP....

 

[laatsch55]

Frequency Response, 10 watts output, 8 ohm load, Bias 402Mv.

 

[laatsch55]

THD & N, left channel....

 

[NavLinear]

THD & N, left channel....

Looking at the graph one sees a large increase in the higher frequencies but when you look at the numbers it's only 0.3% THD&N at 80 kHz! Kind of deceiving without looking a little more closely. Looking good.

 

[laatsch55]

Got some hash on the rails, I did not put any .33uf mylars on the rail to ground connection yet. A wee bot of hi freq oscillation, even more evident on the left channel.


Spectrum Analysis, (noise floor)

 

[laatsch55]

Spectrum Analysis, Left Channel....

 

[laatsch55]

Other measurements...

 

[laatsch55]

The faceplate Goddess has out done herself again... it was pretty rough...

It will also get the cool fold away rack handles...

 

[laatsch55]

The test that really matters.....

 

[laatsch55]

This phase (god I'm funny...) usually takes a week...... like Joe says..." No one test amps like you do Lee.."

 

[NavLinear]

This phase (god I'm funny...) usually takes a week...... like Joe says..." No one test amps like you do Lee.."

I'm glad you crack yourself up Lee. That is a nice looking faceplate by the way.

 

[Gepetto]

Nice job all around Lee...specs look good. Flirting with 200uV on the right channel, nice. We can go lower