phase linear 400

[gene french]

I never thought about the bias transistor mount being off. Glad you have another terminal strip. That will simplify things. You may have to move the rectifier, buts that's easy compared to drilling the bias transistor mounting holes.
Happy you found the "Continuous Improvement" ground upgrade instructions. Seems I remember you running the two extra wires off the star ground, but not sure.
Yup, study your first WOPL and this second one will become clearer. Later Gene.

thank you so much...i appreciate!!!

 

[George S.]

And, I upgraded the 700 and two 400s. Lucky I still had the copper plates as I built mine without them.

 

[gene french]

Yes, I asked the same question. All WOPLs.

thank again mr. george....i will compare tomorrow ...i have other questions as well...that will be answered when i crack open the other unit!

 

[gene french]

I never thought about the bias transistor mount being off. Glad you have another terminal strip. That will simplify things. You may have to move the rectifier, buts that's easy compared to drilling the bias transistor mounting holes.
Happy you found the "Continuous Improvement" ground upgrade instructions. Seems I remember you running the two extra wires off the star ground, but not sure.
Yup, study your first WOPL and this second one will become clearer. Later Gene.

remember ...this is an original 4 fin with the 400c three prong mounted driver board...that may be one reason

 

[Gepetto]

a bit more progress....
few more wires to run...
double check all...again...

Those long screws have got to go Gene...

 

[gene french]

Those long screws have got to go Gene...

yes sir...

 

[gene french]

only the mod on orange wire...pin 5...
other wopl not modified either...
will do both tomorrow...and double check wiring...
removed zobel network on new dcp...addes dons mod to the other...
i think wiring is complete...i kept ac/dc as seperate as i could...i like it so far...

 

[George S.]

Wow, you've been busy today! The Primary AC run is much improved!

 

[gene french]

Wow, you've been busy today! The Primary AC run is much improved!

that means a lot coming from you....i know how picky you are...
along with mr. sniff and of course without saying...mr. joe!!!
i am sure most everyone here is pretty darn picky too...as they have meticulous amps and setups...
thanks to all of you!!!

i gotta investigate the mod tomorrow....before i turn on the iron...
both of my wopls do not have the mod...
i left the other open to cross check...

 

[WOPL Sniffer]

that means a lot coming from you....i know how picky you are...
along with mr. sniff and of course without saying...mr. joe!!!
i am sure most everyone here is pretty darn picky too...as they have meticulous amps and setups...
thanks to all of you!!!

i gotta investigate the mod tomorrow....before i turn on the iron...
both of my wopls do not have the mod...
i left the other open to cross check...

You don't HAVE to do the ground wire mod on pin 5, you'll never tell the difference.

 

[WOPL Sniffer]

it's already attached to a ground. I wouldn't tear apart a completed amp to do it unless you had to do some maintenance.

 

[gene french]

You don't HAVE to do the ground wire mod on pin 5, you'll never tell the difference.

thank you...i am glad to hear that....lol
that wraps up the wiring...just gonna scan over it tomorrow...
maybe break out the control board...
i will stop and cut the midbass speaker holes...the speakers should be here before the weekend...
and send the box off to paint...
then get back on the upgrade!!!

 

[gene french]

it's already attached to a ground. I wouldn't tear apart a completed amp to do it unless you had to do some maintenance.

yes sir....
again, thank you...

 

[WOPL Sniffer]

You can verify the diff it makes with Joe but you'll never notice.

 

[WOPL Sniffer]

The ground is taken from the back plane and ran through the pin to the control board. I do them on my builds but only because it is handy, if already done, screw it.

 

[gene french]

Those long screws have got to go Gene...

i found the original screws...i changed them because the were rusted badly....i did have the others from the original wopl...so i was able to get 5 original screws that werent rusted all up....
this one was a lot more work because i did not get the new chassis....
that wont happen again...lol

 

[gene french]

The ground is taken from the back plane and ran through the pin to the control board. I do them on my builds but only because it is handy, if already done, screw it.

understood....thanks for your help and advice!!!

 

[gene french]

more progress...

 

[laatsch55]

Getting better there Gene!!!

 

[gene french]

Getting better there Gene!!!

thank you sir...i am trying hard!!!