WANTED: PL400 8 Fin Heatsinks

[mr_rye89]

Just like in the title, to replace my 4 fin heatsinks on my Series 1 PL 400

 

[WOPL Sniffer]

Just like in the title, to replace my 4 fin heatsinks on my Series 1 PL 400

Will they fit???

 

[mr_rye89]

That’s a good question……

 

[WOPL Sniffer]

I wouldn't think so but I'm no 400 expert.

 

[WOPL Sniffer]

You should have snagged one of Joes 400 Chassis' he just ginned up. I need another one.

 

[FredR]

8 fin 400 heat sinks will fit both series one and two.

https://forums.phxaudiotape.com/threads/phase-linear-400-odd-heatsink.9719/#post-273985

 

[FredR]

You should have snagged one of Joes 400 Chassis' he just ginned up. I need another one.

Two in the mail tomorrow. Thanks Joe!

 

[Gepetto]

I have plenty

 

[mr_rye89]

Chassis or heat sinks?

 

[laatsch55]

Chassis...

 

[laatsch55]

Chassis or heat sinks?

Bud, unless you're romping on it it's hard to warm up a 400.....course there's some Infinity's out there that will do it in a hurry, you can always add a fan.

 

[FredR]

Had to google "romping on it".

 

[J!m]

Right after reefing on it in the list.

In the “W” section, you’ll find Wailing on it.

Kicking the snot out of it is also popular.

Going Chernobyl on it.

Getting medieval on it’s ass (thanks Quinton)

Feedin’ ‘er the onions.

 

[mr_rye89]

Bud, unless you're romping on it it's hard to warm up a 400.....course there's some Infinity's out there that will do it in a hurry, you can always add a fan.

Yeah maybe I’m just overthinking this. I should probably just go ahead with the build. Those new chassis look nice. I might…..

Had to google "romping on it".

Lol I wouldn’t. Turn safe search on

 

[George S.]

I think your 4 fin will be fine and will probably just be warm at excruciating sound pressures unless you have really inefficient speakers. A WOPL is amazing. I have 3 and the transformers run warmer than the heat sinks. Putting feet under them also helps.

 

[D-500 Flogger]

Yeah maybe I’m just overthinking this. I should probably just go ahead with the build. Those new chassis look nice. I might…..

mr_rye89,

Gepetto's new 400 chassis is even better than it looks. My original chassis was all catawampus, but I was going to be brave about it, straighten it up after I stripped it, and press with what I got.

But once I heard that the chassis is *deeper*, I immediately decided to upgrade. Why?

Thanks to the inverse-squared law, more room can definitely = a lower noise floor.

Here's a photo of my to-be-WOPL'd stock 400 S2 vs. the new chassis:


Depth measurement: (w/tape measure)

Stock = 4.0"
New = ~5 1/4"

It is sturdy, and the fact that I get to use threaded fasteners (instead of stock sheet metal screws that tend to strip out) to secure the top & bottom covers is very cool.

I voted with my wallet, and very happy that I did. My goal is to use the 400 as my 'benchmark' amp for noise floor measurements (that I want to get my D500s as close as possible to) ...so this new chassis will allow me to experiment with different stand-off lengths, improved wiring harness routing, etc.

Really impressed with the build quality. Investment vs. purchase, if you know what I mean.

Hope this helps --

3D

 

[laatsch55]

Had to google "romping on it".

Seriously Fred?? I thought that was universal...

 

[laatsch55]

mr_rye89,

Gepetto's new 400 chassis is even better than it looks. My original chassis was all catawampus, but I was going to be brave about it, straighten it up after I stripped it, and press with what I got.

But once I heard that the chassis is *deeper*, I immediately decided to upgrade. Why?

Thanks to the inverse-squared law, more room can definitely = a lower noise floor.

Here's a photo of my to-be-WOPL'd stock 400 S2 vs. the new chassis:
View attachment 62383
Depth measurement: (w/tape measure)

Stock = 4.0"
New = ~5 1/4"

It is sturdy, and the fact that I get to use threaded fasteners (instead of stock sheet metal screws that tend to strip out) to secure the top & bottom covers is very cool.

I voted with my wallet, and very happy that I did. My goal is to use the 400 as my 'benchmark' amp for noise floor measurements (that I want to get my D500s as close as possible to) ...so this new chassis will allow me to experiment with different stand-off lengths, improved wiring harness routing, etc.

Really impressed with the build quality. Investment vs. purchase, if you know what I mean.

Hope this helps --

3D

Keeps the caps away from the meters too....youre right VERY cool...