700B/ Series II heat sinks

[laatsch55]

Yep, that's a choker......

 

[Gepetto]

Joe,

I will want some as well.
At a minimum (1) set of (4) black anodized aluminum heat-sinks to fit either a 700B or 700 series II amp.

I am assuming these are the same dimensions as the originals?

If I buy several more sets at the same time, can you combine shipping and save me a few dollars on shipping?

Thanks!
Ed

Hi Ed
These are the same overall dimensions as the PL700B and Series 2 except that there is a radius on each corner that you can see in the picture instead of the sharp corner that was on the originals.

Yes, the $13 in the cost is basically the USPS medium flat rate shipping charge so if more than one set is ordered, that $13 goes away on the second through 4th set. I believe that 4 sets can be packed in that medium box.

 

[Gepetto]

Yep, that's a choker......

The black oxide is a mil spec finish and the lot charge to get anything done in that finish is a killer. The copper upcharge is bad enough but the finish charge to turn them black is crazy money.

When I buy black oxide SS screws I run into the same, very high upcharge.

 

[laatsch55]

Wow.....nutso Joe...

 

[Geegz]

Would copper heat sinks eliminate the need for
cooling fans on the 700 at elevated SPL's?

 

[Gepetto]

Would copper heat sinks eliminate the need for
cooling fans on the 700 at elevated SPL's?

No copper heat sinks would not eliminate that need.

 

[WOPL Sniffer]

No copper heat sinks would not eliminate that need.

Joe, can you give me a price on backplanes and control boards for 3 700B WOPL's? I need to finish these last 2 clairs and a series II

 

[laatsch55]

Would copper heat sinks eliminate the need for
cooling fans on the 700 at elevated SPL's?

Gary, I ran a couple experiments using copper and aluminum heatsinks. I also was thinking that with copper heatsinks I could do away with the need for active cooling. What we found out was that copper does indeed draw heat away faster. But it still did not have enough area to keep up ....

 

[NavLinear]

If I get enough interest, I will get these PL700 Heat Sinks made up.

Aluminum Anodized price per set of 4 is $113 including shipping
Copper no finish price per set of 4 is $400 including shipping

Copper with Black Oxide is ridiculous so will not even give you that price.

Sweet. Add me to the list Joe for one set - possibly two. What's the lot size you need to make this happen?

 

[grapplesaw]

Ok I am in for two sets as well
glen

 

[Gepetto]

I am there guys, I will be launching the order with the fabricator. Thx, will advise the lead time once the order is given.

Joe

 

[essay]

The 1-3/4" stock heatsink should fit inside the 2" so that might work....

 

[WOPL Sniffer]

The 1-3/4" stock heatsink should fit inside the 2" so that might work....

Huh????