My New Early Model PL400 w/ 4 Fin Heat Sink

[laatsch55]

Guys, I have some 21196's i bought for 1.80 ea and some for 3.00 ea. Depends on how many you buy at a time. The least i buy is 200 at a time , 100 of each 96 and 95's.

No, you can not use 21196's for drivers...


Sorry guys i havent bought singles in years, outta touch i guess....

 

[Gepetto]

$4.75 is what we have them for. Less than anyone I know of. ON Semi recently jacked the prices for these a lot. Not sure why.

 

[laatsch55]

Hookay, been awhile since i bought singles...

 

[VSAT88]

These can be used as drivers as well ? I have the RCA's now 66546 CX-7640 all four are the same.

 

[Gepetto]

RCA-410, SJ2741, 66546 are all usable

 

[WOPL Sniffer]

I got buckets of the old transistors. Need a few?????

 

[VSAT88]

Got the driver TX. Thanks. I just have not gotten around to changing out the outputs. Just to be honest I rarely use the amp. EX 442 and the Fisher 500 are the daily drivers.

 

[punchback]

I just finished building the DC Protect board. I doubled checked my work and have a question.

Should R1 and R2 be 2.7 ohm or 2.7K ohm resistors? On the BOM the Mouser pn is 2.7K ohm but the description is 2.7 ohm.

 

[jbeckva]

Ed that's for the 700 DCP. We're dealing with the 400 flavor here.. Coincidentally I recall having a 400 DCP that would delay on power up, but also delay on power down. Figure that one out, LOL! Likely a bad protect chip which is what these 400 DCP's have instead of the discretes on the 700.

PB they should be 2.7 ohm. Looks like Don has the PN's for 2.7K's but R1 and R2 are both for the onboard Zobel.. and in series would be around 5.4 ohms which IIRC correctly was what Don originally spec'd with a single wirewound (might even have one from an old board I switched out).

283-2.7-RC should do it. You would pigtail the tops like a loop, so that the two are in series.

 

[punchback]

Dag nabbit... Another Mouser Order

 

[punchback]

2.7 Ohm resistors on the way... $0.76 for 10 resistors $4.99 for shipping. I wish I needed something else.

 

[VSAT88]

Lol.

 

[jbeckva]

Know the feeling well.. AWP sucks lol. Like.. that's when you get new tips for the iron.. maybe a set of probes..

 

[VSAT88]

Or 10 ( at least) of every damn thing they got !

 

[punchback]

The funny thing is that they are $0.26 for 1-9 but 0.076 for 10-99?? If I bought the 4 I need I'd pay $1.04 but 10 pcs is $0.76. I bought 10...

 

[VSAT88]

Well, now we all know who has the stash..

 

[punchback]

Started to build up the WOA board. Was looking for my lead bending jigs and lo and behold the parts are already bent. Yay! AND each group of parts has their silkscreen legend printed on the label. Nice! Easy to double check as you go. Nice kit!!!

The stock configuration of the PL400 is quasi complimentary, right? At this time I'm staying with the stock config. Maybe later I'll go to the full complimentary.

 

[Gepetto]

Started to build up the WOA board. Was looking for my lead bending jigs and lo and behold the parts are already bent. Yay! AND each group of parts has their silkscreen legend printed on the label. Nice! Easy to double check as you go. Nice kit!!!

The stock configuration of the PL400 is quasi complimentary, right? At this time I'm staying with the stock config. Maybe later I'll go to the full complimentary.

Glad you like it.

Yes most all PL amps are Quasi Comp as stock.

 

[punchback]

Joe on the 10 ohm resistor, you populate it in the D4 (L &R) location?

 

[Gepetto]

Yes. You received all the electronic documentation correct? Follow the Quasi-Comp tab on the BOM spreadsheet I sent you.