Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thread

[stuwee]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

WOOF!!!!

That bad boy is huge, you haven't shown a pic of it like that before, douche

 

[laatsch55]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Dimensionally as big as the Spec, and they're BIG.

 

[laatsch55]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Jerry the big drum to open track 6 is a KILLER!!!!!!!!!!!!!

 

[laatsch55]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Just powered down after a few Shpongle and Younger Brother CD's, this amp went to sleep as quiet as a church mouse, NO TURN OFF THUMP!!!! NONE!!!!!

 

[stuwee]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Just powered down after a few Shpongle and Younger Brother CD's, this amp went to sleep as quiet as a church mouse, NO TURN OFF THUMP!!!! NONE!!!!!

Let those fins cool before you put the 'peanuts' around it

Jer, he does do his part for the environment





btw, Leester, Thanks for the Onix bag

 

[laatsch55]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

The Onix bag??????

 

[stuwee]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

The Onix bag??????

The 100% recycled paper products one...

The CD-2's debut... WOOF!!!

 

[Gepetto]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Lee
I noticed that in that early 700 picture you provided, the heat sink capability for the bridge rectifier is severely challenged. In the 700B and later 400s, as you know that PL moved to sinking it to the transformer die cast which has much more thermal inertia than that thin aluminum plate in the early 700 view. Something to think about for your next conversion. A square finned heatsink on the flip side of the aluminum wall with a hole in the middle to allow bolting the bridge, wall and heatsink together would be an improvement.

 

[mlucitt]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

I was listening, and then I had Internet Service Provider challenges.

I am going to get some Shpongle and see what all the fuss is about...

Joe beat me to the punch, the bridge does get warm on mine. I know I am close to 15 Amps because the lights dim on the more "energetic" passages of music. Keeping the bridge cool would extend its life. I expected to see the light panel LEDs dim too but Joe did a good job of engineering a DC solution with plenty of capacitance to keep the LED power up.

I am not one to claim that any specific component sounds better than another or that devices that let electrons move from one end to the other through conductive materials sound better over time, "but" the sound does seem to get better the longer I listen to the PL 900 (my new name for the White Oak Audio-equipped amp based on conservative ratings). I have another theory - that the longer I listen to the amp the broader my smile becomes and this helps to open the ear canals and let more sound in, giving the impression of higher quality audio. It works for me.

I added a Word document that I used when I was in the Navy. It seems appropriate for this thread too.

Mark

 

[speakerman1]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Very good. There are a few others also. But those were good.

Larry

 

[Gepetto]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Mark
Make sure you abideth by the tenth of those commandments

 

[laatsch55]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

I have had a number of "energizins" on 480 3 phase. One of the worst, i was standing in mud , motor panel was enegized and i was chasing an intermittent problem, at night, Levon and jani in the pickup warming up(it was 20 below that night). I was running my bare hand up some #14 THHN when I hit the bare spot, being almost a perfect ground i took a pretty good hit. Managed to get loose of it , made three steps back towards the truck and my legs quit workin.I went down in a pile and was leaning against the tire of the front axle when child and wife arrived, i was a wee bit incoherent and REALLY CONCENTRATING on getting the heartbeat back to normal. Kinda scared both of em. After a couple minutes i was able to get up and convince em NOT TO call the ambulance and everything was fine. THAT WAS the night I decided I was NOT ten foot tall and bulletproof.

 

[laatsch55]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Mark------I love your descriptions of your listening experience, it's like I was typing them myself!!!

 

[laatsch55]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Lee
I noticed that in that early 700 picture you provided, the heat sink capability for the bridge rectifier is severely challenged. In the 700B and later 400s, as you know that PL moved to sinking it to the transformer die cast which has much more thermal inertia than that thin aluminum plate in the early 700 view. Something to think about for your next conversion. A square finned heatsink on the flip side of the aluminum wall with a hole in the middle to allow bolting the bridge, wall and heatsink together would be an improvement.

Joe, thanks, i thought the aluminum mounting bracket had plenty of mass to take care of that problem. So i just need the mass more concentrated.
I like the Series I's method of capturing the caps and providing a faux shield from the rest of the amp even if it's only illusionary. there are severe Chassis problems with the "B" I'm doing for Sutton, I just may transfer the faceplate of the "B" to the Series I chassis i have here as a parts machine. Wonder If that's been done before??? Always breaking new ground .

 

[mlucitt]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

I am going to try and load a chronological photographic record of the White Oak Audio main board installation. Because the forum needs a file and will not upload a whole folder, I will paste the pictures into a PowerPoint presentation. Let me know if it works for you.

Mark

 

[Gepetto]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Nice powerpoint presentation Mark, thank you.

 

[mlucitt]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Lee, mine did not involve a shock but was just as exciting. I was working on a 440 VAC motor generator and it had blown six 100A fuses at start up because the rotor of that big motor was very difficult to get rolling (2700 lbs). I reached in with the grounded shorting probe to be sure the capacitor banks had discharged while standing on a steel platform. In my hurry I turned off the excitation power, but I forgot the main breaker. When that two-foot probe hit the buss bar it exploded into a fine mist of flaming copper particles and it sounded like a 12 ga shotgun went off in my face. The flash was so bright that I received a significant flashburn to my eyes. I shut the power off, blinked a few times, replaced the fuses, and got that motor turning over with half the B phase buss bar missing. Later, the doctor had to numb my eyes because it felt like I had fine sand in both eyes. I was lucky and had no permanent damage.

I had violated Commandment 2 and gained great respect for three-phase power after that.

 

[laatsch55]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Mark, contact Jerry and see if that can be a sticky in this forum slot, all on it's own, that's too nice to be buried in this 500 post behemouth!!!

 

[laatsch55]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Mark, i have vaporized 12 and 14 gauge wires using them for DMM's accross 3 phase disconnects when i was 80 miles out in the boomtoolies and no other way to check em. It does get loud and blind ya for awhile.

 

[mlucitt]

Re: Jerry's " ONLY ONE IN THE COUNTRY" Phase Linear 700 Thre

Thank for the complement on the slide deck. I have respect for those brave enough to temporarily tame the dragon. You just can't turn your back on that monster.