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Old 22nd September 2014, 09:11 PM   #1
Nelson Pass is offline Nelson Pass  United States
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Default The Mu Monster

Elsewhere on the forum our friend Rob (n3szd) wants to build a 1000 watt
single-ended amplifier.

On the one hand, I sympathize with excess enthusiasm in a project.

On the other hand, I take no responsibility for the results of posting the
following schematic.

Anyone who attempts to build such a thing is probably asking for trouble.

You have been warned...

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Old 22nd September 2014, 09:15 PM   #2
vdi_nenna is offline vdi_nenna  United States
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I gots to see how this takes shape. Following.
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Old 22nd September 2014, 10:19 PM   #3
AudioSan is offline AudioSan  Norway
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wow
it do smel a little expensive. at $40 pr output device, it will be $1280 just in outputs. and one will need 3 times as many just to get matched sets i don't want to think about the total price for a running 2ch amp

Last edited by AudioSan; 22nd September 2014 at 10:29 PM.
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Old 22nd September 2014, 10:35 PM   #4
Nelson Pass is offline Nelson Pass  United States
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And parallel devices should be matched to .1V Vgs or so.

Keeping that in mind, you will note that these devices are not at
the higher end pricing of hockey pucks.

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Old 22nd September 2014, 10:38 PM   #5
n3szd is offline n3szd  United States
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There is a GOD!!!!!!!!!!!!!
Thank you, and the $15,000 I will spend building it!!!!!!!!!!!!
WoW
Just wish it was 300volt rails...
260 seems low.. But I will say this, it looks simple! I need current max is all
I am going to have a few questions, but am with Janet now, mostly has to do with what type caps for the picofarad, P1, is variable bias control? Purpose of Q3, wattage ratings for resistors not labeled. Q4 andQ5 is missing a lead? Think that covers it
Lost more to figure out, especially cooling

Last edited by n3szd; 22nd September 2014 at 10:56 PM.
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Old 22nd September 2014, 11:30 PM   #6
Zen Mod is offline Zen Mod  Serbia
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n3szd

going to build this , while asking that type of questions ........ you're going to build your Personal Green Mile .

moi ...... contemplating about 10,000 mW monsters



Papa - wouldn't be beneficial to include emiter/source follower , to feed octet of pucks ?

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Last edited by Zen Mod; 22nd September 2014 at 11:33 PM.
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Old 22nd September 2014, 11:30 PM   #7
vacuphile is offline vacuphile  Netherlands
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No green awards for this one
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Old 22nd September 2014, 11:36 PM   #8
n3szd is offline n3szd  United States
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Default Build it, Heck yeah!

Quote:
Originally Posted by Zen Mod View Post
n3szd

going to build this , while asking that type of questions ........ you're going to build your Personal Green Mile .

moi ...... contemplating about 10,000 mW monsters



Papa - wouldn't be beneficial to include emiter/source follower , to feed octet of pucks ?

I already have a surgeon to take my kidney out!
Rob
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Old 22nd September 2014, 11:37 PM   #9
n3szd is offline n3szd  United States
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Default Totally Green

Quote:
Originally Posted by vacuphile View Post
No green awards for this one
Comes with a big windmill!
Rob
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Old 22nd September 2014, 11:54 PM   #10
AudioSan is offline AudioSan  Norway
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a more doable version could be: 14 IRFP240 gainstage Devices and 14 IRFP240 CCS devices @0.36A pr device for a total of around 5A bias and +/-85VDC rails. thats about 400W class A @8ohm. total consumtion of about 2KW for 2ch. still crazy amount of power.
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