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WTB: F4 PCB boards

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Tea-Bag

Tea-Bag

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Joined 2006
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Heatsinks

Does anyone know if a old set of Hafler DH-200 heatsinks will work for this project.

They are 2" high fins, 9 inches long, 4.5 inches high. Smaller surface than the conrad units, but I have them lying around.

Can someone point me to the cooling match these units can get?
 
carpenter

carpenter

Member
Joined 2002
inlowsound.com
Re: Heatsinks

mithomas said:
Does anyone know if a old set of Hafler DH-200 heatsinks will work for this project.

They are 2" high fins, 9 inches long, 4.5 inches high. Smaller surface than the conrad units, but I have them lying around.

Can someone point me to the cooling match these units can get?
Click to expand...


Do you have enough heat sink pieces to run three fets per heat sink? Then it seems perfect.
 
Peter Daniel

Peter Daniel

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Joined 2002
audiosector.com
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I received the amp boards today, and again, they shipped me half of what I ordered (50 instead of 100). I suspect that scoring line may have something to do with that;)

So I'm a bit short and people from the end of the ordering list will not receive the boards yet and some will receive partial order only.

The next batch is already ordered and I had hard time sorting the available boards. I'm short of 29 amp boards and 13 PS boards.

If somebody don't need the boards right away, requires less for now or needs them badly, please let me know, and I will try to accomodate your needs.
 
Tea-Bag

Tea-Bag

Member
Joined 2006
Paid Member
heatsinks

Do you have enough heat sink pieces to run three fets per heat sink? Then it seems perfect.
Click to expand...

Thanks Carpenter,

assuming 6 fets per channel no, I only have two of these. So at best one stereo side. I am just hoping to recycle some hardware and save money here.

I was looking for other alternatives to the Conrads, if there are any URL's abound for them, that would be nice.
 
Peter Daniel

Peter Daniel

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Joined 2002
audiosector.com
Paid Member
All USA orders have been shipped on Wednesday, international and domestic will ship today. Below is the list of backorders (most are partial shipments, first number represents amp board, second is for PS):

Georgios V
Greece 2

Christian W
Germany 3

Myron W
United Kingdom 2=2 ins

John I
United States 2

Corey K
United States 1=1

Frank R
Germany 4=4

James S
United States 3=4

Arild O
United States 4

Thomas S
United States 2=2

Niclas L
Sweden 4

Ryan H
United States 1

James R
United States 1
 
carpenter

carpenter

Member
Joined 2002
inlowsound.com
Re: F4 Chassis

samkhanski said:
Can anyone provide ideas/links for F4 enclosures. A while back someone posted this:

http://www.atiresearch-anodized.com/ATI-639M.html

Looks good but there were no responses regarding the possible suitability of the heatsinks. Any thoughts/suggestions?

Thanks
Click to expand...


162.56 h (6.4") X 596.90 d (23.5") seems to be the size of the heatsinks. The fins appear to be 25mm (1.0"). Going on gut, it may work, but I'd rather see the fins protruding a bit longer for some breathing room. The chassis is probably quite spendy. You might be better off purchasing a bare chassis, adding heat sinks to the sides and designing your own face plate.
 
Tea-Bag

Tea-Bag

Member
Joined 2006
Paid Member
Chassis

Carpenter,
I plan on using the Conrad Heatsinks, but am wondering if others could post some other workable options.

You mention chassis,
Any vendors you or anyone else can recommend to buy?

I looked at the above mentioned chassis, shipping from Overseas to USA is at least 150 on the slow boat, and it's a 300-350 dollar US chassis.
I think I will work with local CNC people first, if there isn't another common chassis to be recommended for F1-F4 clones for breathing room.
 
carpenter

carpenter

Member
Joined 2002
inlowsound.com
Re: Chassis

mithomas said:
Carpenter,
I plan on using the Conrad Heatsinks, but am wondering if others could post some other workable options.

You mention chassis,
Any vendors you or anyone else can recommend to buy?

I looked at the above mentioned chassis, shipping from Overseas to USA is at least 150 on the slow boat, and it's a 300-350 dollar US chassis.
I think I will work with local CNC people first, if there isn't another common chassis to be recommended for F1-F4 clones for breathing room.
Click to expand...


I tend to fab my own chassis. Here's a test bed I used to play with. It's now reconfigured into four different amplifiers.
 

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