I must say I appreciate the patience. It has been a cumbersome task to some degree. OTOH, I have been listening to the F5T with the DCB1 in front for a couple of months now and if wasnt for the fact that I have an audio addiction, I could easily stop here and move on to other parts of the system. The synergy between the two in my system is wonderful. If you plan on the F5t, I would highly suggest the DCB1 or the cascoded BF862 version by Juma in the F5 preamp thread. The combo is precise, quiet, and balanced top to bottom. The F5t will push my XXLS Peerless 12" woofers all day without breaking a sweat. THe diodes dont even get slightly hot, although this is in free air. As soon as the rest of the GB components come in, will build a final version of the F5T in either V2 or 3. It is my hope that if the GB goes well, and everyone follows though, that this amp will be auctioned with the proceeds going to DiyAudio or AmpCamp or something to do with this site.
Yeah Imix, wooo hoo out of excuses now ....
Ha! Yeah, now I guess I need to get serious about installing an a/c unit in the workshop for this Nashville summer heat.
http://www.diyaudio.com/forums/site...n-stock-chassis-requesting-your-feedback.html
we'll have 4u x 300, 5Ux 400. The latter is probably the minimum for F-t
It's pretty big!
we'll have 4u x 300, 5Ux 400. The latter is probably the minimum for F-t
It's pretty big!
hi,
If I have a aluminum heatsink 4" tall 2" deep(fins) and 12" long,How can I figure it's heat loss,If I have overlooked a thread please point me to it,also what about the material ,like bronze or copper,and the size of the heat spreader,isn't that the solid piece the fins connect to,let's say 1/2 inch,
Thank a lot!
NS
If I have a aluminum heatsink 4" tall 2" deep(fins) and 12" long,How can I figure it's heat loss,If I have overlooked a thread please point me to it,also what about the material ,like bronze or copper,and the size of the heat spreader,isn't that the solid piece the fins connect to,let's say 1/2 inch,
Thank a lot!
NS
it's very hard to calculate it on the size of the sinks.
it depends on baseplate thickness, fin thickness, fin spacing, if it's grooved fins or smooth fins++.
as long as the fets are betwin 5x and 10x baseplate thickness away from the edge of the sink
and the fet spacing betwin 10x and 20x baseplate thickness, there is no need for a heat spreader
it depends on baseplate thickness, fin thickness, fin spacing, if it's grooved fins or smooth fins++.
as long as the fets are betwin 5x and 10x baseplate thickness away from the edge of the sink
and the fet spacing betwin 10x and 20x baseplate thickness, there is no need for a heat spreader
Yes they can!
I did remove the current limiter and kept the thermistors,32 volts is good starting point ,If using cascode.
I used PAPA values ,most all covered in these threads,
You will have to use the schematic or renumbers all the parts on Papa's schematic,cause they don't match the board,lol.R1 = R9
Have fun,
NS
I did remove the current limiter and kept the thermistors,32 volts is good starting point ,If using cascode.
I used PAPA values ,most all covered in these threads,
You will have to use the schematic or renumbers all the parts on Papa's schematic,cause they don't match the board,lol.R1 = R9
Have fun,
NS
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