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Class D Switching Power Amplifiers and Power D/A conversion

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Old 22nd October 2005, 09:54 AM   #31
barfind is offline barfind  Australia
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Default Re: Von Schweikert+2xAutocostruire

Quote:
Originally posted by davee
Hi, i'm running 2 Autocostruire amps bi-amping my Von Schweikert VR4.5 speakers (90db 6ohm)
For power supplies i use 2 NEMIC-LAMBDA switchmode power supplies (11-25v,2.8amps each) that i scored off ebay for $20.
I set them at 14.2v. They sound even better with these smpss than from battery or linear ps, i have tried them all too.

my Von Schweikert vr4.5 spkrs are big full rangers ,i have had 7 years. The sound i am getting from them with 2 Autocostruire amps and smpss is really superb .


d

Thanks davee. I will try the smps. Thanks for your input. Where in the northern Rivers are you?

Nigel
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Old 22nd October 2005, 09:57 AM   #32
barfind is offline barfind  Australia
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Mrdodo, Thanks fore the explantion. I thought that this amp was a switching device???? Howcome a switching PS works so well with them. Is a high amp output a better idea, or anything above 1.5 amps doesn't matter

Nigel
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Old 22nd October 2005, 10:07 AM   #33
MrDodo is offline MrDodo  Mauritius
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No idea why the swith Mode PS sound better.
I just tried SMPS and found that it is better, like some ppl in this forum suggested. I never tried Battery, too lazy to recharge them etc.
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Old 23rd October 2005, 04:35 AM   #34
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Andrew,
It's nice to heard from you again. Hope the storm has passed Cayman Islands.

Listening to Charlize?

Cheers,
VT4C
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Old 23rd October 2005, 05:35 PM   #35
Nuuk is offline Nuuk  United Kingdom
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Quote:
I think that Nuuk used one for the TNT review of the different t-amps but he wouldn't say so.
I did use one (NOS DAC) and I think that I said so too!
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Old 23rd October 2005, 08:09 PM   #36
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Nuuk... what are your thoughts on that NOS Dac? Thank you very much, Juan
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Old 23rd October 2005, 08:12 PM   #37
Nuuk is offline Nuuk  United Kingdom
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Quote:
Nuuk... what are your thoughts on that NOS Dac? Thank you very much, Juan
Juan, I like both the NOS DACs that I have heard. I can't say more as one of them is the subject of my next TNT review (out soon I hope)!
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Old 23rd October 2005, 10:12 PM   #38
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Hi VT4C,

I am "cool", a little damage to the island but not too much, Wilma passed around 170 miles away.

Charlize is playing as I type, breaking in and still sounding like a lovely lass.


Andrew
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Old 24th October 2005, 06:14 AM   #39
MrDodo is offline MrDodo  Mauritius
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The Monica2 as I found out quite low output and I sometimes need to open the 50K stepped attenuator full to really get decent volume.
Yesterday I decided to connect Monica2 directly to input of amp3.
Skipping one element can only be an improvement, so I thought.
But then I get a sort of pink noise on the left channel. Sort of waves breaking on the beach.
The right channel no noise.
Anyone tried hodrodding Monica2 yet?
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Old 24th October 2005, 08:19 AM   #40
barfind is offline barfind  Australia
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I an looking at a 13.5v 18 amp SMPS. I like the idea of 13.5 v. I am not sure how many amps charlize will draw, but this supply will have it well covered. Is this overkill? I am thinking that this amp is worth the investment in a good power supply.
Any thoughts?

Nigel
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