hello. i'm starting F5 turbo v3 now.
i'm loocked at heatsinks USA's 10.80" profiles. 6" high.
so 20x6" pr side. i need to desepate around 200w pr channel.
the sinks can't do the job by themself. i need some heattrnasfer
what to use? 10mm copper? or just move the center outputs outside of the boards? one of 2
i'm loocked at heatsinks USA's 10.80" profiles. 6" high.
so 20x6" pr side. i need to desepate around 200w pr channel.
the sinks can't do the job by themself. i need some heattrnasfer
what to use? 10mm copper? or just move the center outputs outside of the boards? one of 2
Last edited:
I'm not getting you , maybe you need to be more specific about your position ...
Are you going to have 200 watt of class-a bias / ch , if so then the amplifiers will be drawing 1600 watts or very close to it .
get a pair of those 6" high heatsinks and a 14" high version.
Bolt the two 6" to the back of the 14" leaving a horizontal gap of ~2" between.
Fit the F5T into that gap.
This should adequately cool your proposed monoblock amp.
You could reduce the height of the heatsinks below the F5T. Maybe 3" at bottom, 6" at top and 11" joining them.
Alternatively mount the 6" heatsinks back to back with a 1" vertical gap between them.
Mount half the Ns and half the Ps to one sink.
Mount the remaining Ns & Ps to the other sink.
Keeping the Ns & Ps towards the bottom will allow the PCB to be mounted just below the sinks to keep the wires fairly short. Psu below that leaving the sinks looking like they are mounted on a flagpole.
Bolt the two 6" to the back of the 14" leaving a horizontal gap of ~2" between.
Fit the F5T into that gap.
This should adequately cool your proposed monoblock amp.
You could reduce the height of the heatsinks below the F5T. Maybe 3" at bottom, 6" at top and 11" joining them.
Alternatively mount the 6" heatsinks back to back with a 1" vertical gap between them.
Mount half the Ns and half the Ps to one sink.
Mount the remaining Ns & Ps to the other sink.
Keeping the Ns & Ps towards the bottom will allow the PCB to be mounted just below the sinks to keep the wires fairly short. Psu below that leaving the sinks looking like they are mounted on a flagpole.
Last edited:
Hello. I have 2 pcs of fischer sk 159. l 400mm h 200mm d 85 mm ? is One heatsink
enough for one channel F5 Turbo V3 ? Regards.
SK 159, Standard extruded heatsinks, Heatsinks f.cool, Fischer Elektronik
enough for one channel F5 Turbo V3 ? Regards.
SK 159, Standard extruded heatsinks, Heatsinks f.cool, Fischer Elektronik
The Rth is around 0,15 C/W. If you have 8 mosfets all dissipating around 30 Watt= 240 Watt. So 0.15x240= 36 C temperature rise above T ambient.
Don't know how hot it is over there, but say 24C + 36C = 60 C. Wouldn't go further then this 60C.
And there is an effect that the heatsinks are specified at a higher temperature where they dissipate better...so they will actually run hotter than the 60C.
But give it a try, you can always lower the bias a bit. ( Like I did...)
I have 80mm fins, 200 x 300 mm sinks, and they dissipate around 160 -180 Watt.
Your heatsinks are 100 mm longer and they have ribbed fins, so give it a try.
Walter
Don't know how hot it is over there, but say 24C + 36C = 60 C. Wouldn't go further then this 60C.
And there is an effect that the heatsinks are specified at a higher temperature where they dissipate better...so they will actually run hotter than the 60C.
But give it a try, you can always lower the bias a bit. ( Like I did...)
I have 80mm fins, 200 x 300 mm sinks, and they dissipate around 160 -180 Watt.
Your heatsinks are 100 mm longer and they have ribbed fins, so give it a try.
Walter
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.