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Old 28th January 2013, 09:52 PM   #1181
Renron is offline Renron  United States
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"wallet heat mass and weight for starter "
Seems unreasonable . Unobtainium!
100W Class A? sounds good to me!
3.6A ? It's gonna get hot. May have to add a small fan. Or change the subwoofer to a TRW-17
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Old 28th January 2013, 09:54 PM   #1182
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Buzz, have you finished your 4 pair / channel yet?
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Old 28th January 2013, 09:54 PM   #1183
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Quote:
Originally Posted by buzzforb View Post
AudioSan,
You know that your about to have a lot of builders coming on line. Sure hope you got some extra time
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Old 28th January 2013, 09:56 PM   #1184
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Quote:
Originally Posted by Renron View Post
"wallet heat mass and weight for starter "
Seems unreasonable . Unobtainium!
100W Class A? sounds good to me!
3.6A ? It's gonna get hot. May have to add a small fan. Or change the subwoofer to a TRW-17
well. 3.6A will run cooler then 5.52A
build in some fans in the rack that blows air up thrue the sinks
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Old 28th January 2013, 09:57 PM   #1185
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AudioSan said he was goign to finish first. I am waiting on him.

Truthfully, THe F5T is a COMPLETELY different sound than the F5, which I did not prefer. If the V3 version improves things as much as the V2, I might quit.
Ignore that. IT was said in moment of insanity. I am in fact not doing a V3, but instead a balanced V3, with a twist

Quote:
Originally Posted by AudioSan View Post
well. 3.6A will run cooler then 5.52A
build in some fans in the rack that blows air up thrue the sinks
Or chimney.
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Old 28th January 2013, 10:06 PM   #1186
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at least a got the M3 tap now so i'm only waiting on som alu. i think i finnish the chassis before i power it up. if i don't, it will never be finnished
a chimney will give a lot more mechanic noise. but demands less fans.
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Old 28th January 2013, 10:43 PM   #1187
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Quote:
Originally Posted by AudioSan View Post
well. i can think of a copple of things. wallet heat mass and weight for starter
and to acctualy get 480W output you need some high voltage. about +/-90V.
2*90V*5.52A=994W dissipation pr ch at idle. and this is minimum

if you want to get say 100W class A at 4ohm, you need about 3.6A bias. and around +/-32V rails(fully loaded)
San,

Can you explain how you are calculating the power from 32v rails ...?
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Old 28th January 2013, 11:17 PM   #1188
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Originally Posted by a.wayne View Post
San,

Can you explain how you are calculating the power from 32v rails ...?
+/-32V rails give you about 29V P-P on the output.
29*29/4ohm=210W peak or 105W Rms.

for class A power:
3.6A*2=7.2A peak.
7.2*7.2*4ohm=207W peak or 103W Rms.
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Old 29th January 2013, 01:19 AM   #1189
a.wayne is offline a.wayne  United States
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OK .....
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Old 29th January 2013, 05:48 AM   #1190
Renron is offline Renron  United States
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Thank you very much AudioSan. That was very enlightening.
I look forward to your impression of the 4 pair version.
Ron
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