joka22
Like these........
http://www.madaboutsound.com/prod_det.asp?cid=87&sa=cf&ctid=7
He's a moderator here and a smashing dead straight bloke to do business with. I have LM3875s using a pair of these in a metal enclosure which gets faintly warm after 16 hours at moderate volume.
Vikash has a non commercial site as well which should be of interest to you. I'm using his ported FR125 design with my chipamp and like them very much. It's here.....
http://www.vikash.info/audio/
John
Like these........
http://www.madaboutsound.com/prod_det.asp?cid=87&sa=cf&ctid=7
He's a moderator here and a smashing dead straight bloke to do business with. I have LM3875s using a pair of these in a metal enclosure which gets faintly warm after 16 hours at moderate volume.
Vikash has a non commercial site as well which should be of interest to you. I'm using his ported FR125 design with my chipamp and like them very much. It's here.....
http://www.vikash.info/audio/
John
john blackburn said:
very good suggestion
johnI have done this myself a number of times:
-> heatsink plates between the transformer and the circuitry
this also increases the physical distance between trafo / board
All trafos has got a pretty strong electromagnetic field around them
-> this disturbing field is bigger for old E-Type Core transformers
-> and a bit smaller for round toroid core transformers
however TOROID round transformer cores HAVE this electromagnetic field, tooAttachment.
One of my examples with
my homemade aluminum plate heatsinks between E-Type trafos and circuits
(One 4-5 Watt RMS True Class A amplifier)
Attachments
joka22 said:
Images are from www.vikash.info/audio
Page: http://www.vikash.info/audio/chipamp-lm3886/
This is a nice concept, that I would use.
Niot only for chip amps.
But for any power amplifier with the need of heatsinking.
Build your box using two heatsinks as 2 of them sides of the box.
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An externally hosted image should be here but it was not working when we last tested it.
I ahve used comp psu heatsinks to cover the area of the chip amps and attached the psu heatsinks to the other heatsinks.
here is a link of the heatsinks and chip amp connected toriod going to be delivered on the 18 thats why i havnt done much.
http://img526.imageshack.us/my.php?image=newheatisnkcw7.jpg
I got a spare toriod taken from the prevoius amp it was a pa carnival type amp. The toriod is 43v dual secondary and i have bunch of 6 toshiba 2n3773 trans some salvaged resitors and caps and swicthes and volume pots but not gona use the vol pots in my gainclone.
anyone wants these let me know i trade the whole lot for four output speaker binding post and two rca input phono and silver wire for input or something that i may need for my gainclone, i still want volume pot but not these cheap type the peter daniel is expensive and am out of budget i bought kenwood amp 3750 dexoit isp alchol and other stuff.
here is a link of the heatsinks and chip amp connected toriod going to be delivered on the 18 thats why i havnt done much.
http://img526.imageshack.us/my.php?image=newheatisnkcw7.jpg
I got a spare toriod taken from the prevoius amp it was a pa carnival type amp. The toriod is 43v dual secondary and i have bunch of 6 toshiba 2n3773 trans some salvaged resitors and caps and swicthes and volume pots but not gona use the vol pots in my gainclone.
anyone wants these let me know i trade the whole lot for four output speaker binding post and two rca input phono and silver wire for input or something that i may need for my gainclone, i still want volume pot but not these cheap type the peter daniel is expensive and am out of budget i bought kenwood amp 3750 dexoit isp alchol and other stuff.
looks alright, joka22
there will be no problem The Chips will get too hot for you
because you have so much heatsinking
these chip amps does not need very much heatsinks
for normal use
(only if you play very hard with speakers for several minutes)
what is the yellow cone speaker under the chassis?
is it one FOCAL or one SCAN-SPEAK woofer ... or
there will be no problem The Chips will get too hot for you
because you have so much heatsinking
these chip amps does not need very much heatsinks
for normal use
(only if you play very hard with speakers for several minutes)
what is the yellow cone speaker under the chassis?
is it one FOCAL or one SCAN-SPEAK woofer ... or
I got a spare toriod taken from the prevoius amp it was a pa carnival type amp. The toriod is 43v dual secondary and i have bunch of 6 toshiba 2n3773 trans some salvaged resitors and caps and swicthes and volume pots but not gona use the vol pots in my gainclone.
anyone wants these let me know i trade the whole lot for four output speaker binding post and two rca input phono and silver wire for input or something that i may need for my gainclone, i still want volume pot but not these cheap type the peter daniel is expensive and am out of budget i bought kenwood amp 3750 dexoit isp alchol and other stuff.
as i prevously posted any takers????????????????????????
anyone wants these let me know i trade the whole lot for four output speaker binding post and two rca input phono and silver wire for input or something that i may need for my gainclone, i still want volume pot but not these cheap type the peter daniel is expensive and am out of budget i bought kenwood amp 3750 dexoit isp alchol and other stuff.
as i prevously posted any takers????????????????????????
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