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Chip Amps Amplifiers based on integrated circuits

My "audiophile" LM3886  approach
My "audiophile" LM3886  approach
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Old 6th October 2005, 09:07 AM   #1021
Groundloops is offline Groundloops
Im amazed!
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My "audiophile" LM3886  approach
Thumbs up My_Ref PCB blowout

Hi Piergiorgio ! Want to getem ... What is the shipping fee to Germany ? Send me an email.

Cheers,

Gerhard
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Old 6th October 2005, 09:37 AM   #1022
Greg Erskine is offline Greg Erskine  Australia
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My "audiophile" LM3886  approach
Hi Gerhard,

I was just wondering what "SmellOfPoo" means, is it German?

Regards
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Old 6th October 2005, 10:35 AM   #1023
Groundloops is offline Groundloops
Im amazed!
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(Should I answer or ... ...) You know its not german.
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Old 6th October 2005, 12:25 PM   #1024
Panelhead is offline Panelhead
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Default One ohm resistors

Loking over the BOM for the twisted pear mono boards, did not see the 1 ohm resistors listed. Are they in the 1/4 watt group?

George
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Old 6th October 2005, 12:27 PM   #1025
Russ White is offline Russ White  United States
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Yes they are included in the 1/4W bundle
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Old 6th October 2005, 12:29 PM   #1026
plovati is offline plovati  Italy
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Default Re: My_Ref PCB blowout

Quote:
Originally posted by SmellOfPoo
Hi Piergiorgio ! Want to getem ... What is the shipping fee to Germany ? Send me an email.

Cheers,

Gerhard

You should got mail!
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Old 6th October 2005, 01:50 PM   #1027
rudi is offline rudi
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sometimes in life you discover something so precious that you want to keep it for yourself. well i wanted to..........

as Ryan suggested. place a 3k3 resistor form the -ve supply pin4 to the output pin 6

viola your stereo becomes a holographic machine. well almost

very worthwhile. try it you might be suprised

cheers
Rudi
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Old 6th October 2005, 03:27 PM   #1028
rudi is offline rudi
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Hey Russ, How is the conversion comming along. once you've done that then try the 3k3 on the 318. this is one tweak that left me cold

cheers
rudi
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Old 6th October 2005, 03:31 PM   #1029
Russ White is offline Russ White  United States
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Quote:
Originally posted by rudi
Hey Russ, How is the conversion comming along. once you've done that then try the 3k3 on the 318. this is one tweak that left me cold

cheers
rudi

Yes I did try it, but I only had enough trafos for one channel. So I will reserve final judgment, but off hand I would not say I was overwhelmed. Still I don't think it was bad.

I actually used a current source to bias the LM318 to class A once. It is indeed quite nice, but it lowers the headroom on the chip a little.

I meant to try it again. This is as good a time as any.

Cheers!
Russ
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Old 6th October 2005, 03:46 PM   #1030
rudi is offline rudi
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I don't blame you if you say you weren't blown away if you used one channel. you obviously need two channels to get the full effect. i think you can even run one trafo for the 18v power supplies. anything over 30va will then do. 9not the best solution but will work) i feel the secret lies in the 18v not 12v

the "class a" trick. well i did not think that it robbed it of any headroom. What it added is so much better than a bit of loss in headroom

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Rudi
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