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Old 23rd November 2008, 01:22 AM   #1
back is offline back  Greece
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Default ucd700hg driving 1 ohm

hi guys.

i am running two monoblocks with 1kva and 4x10.000uf per channel
driving a pair of infinity that drop to 1 ohm at low frequencies and i am
not pleased with the bass as it is a little loose.

do you guys think that if i increase to 8x10000uf per channel or even more i will have an improvement or i have reach the modules limit?

there are some monoblocks at hypex site as an example with 2kva and 8x33.000uf per channel but i think it`s way to much.

what you guys think would be the power supply to squeeze 100% from
the 700`s.

thanks in advance

george.
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Old 23rd November 2008, 02:34 AM   #2
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Default Re: ucd700hg driving 1 ohm

george,

You've got adequate storage capacity already, increasing it further is unlikely to bring the results you're looking for.

I don't think you've reached the limitations of the modules but it does sound like you've hit a ceiling in your implementation of them.

Drop me an email and we'll discuss a few details.
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Old 20th December 2008, 08:04 PM   #3
back is offline back  Greece
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guys i would like to say a big thanks to classdphile for his valuable
advise.

without changing anything but the wiring my amps have a huge improvement.

they have now the best bass a ever heard from an amp.

and as a bonus they have even more detail deeper and more

pinpoint imaging.

thank you berns.
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Old 22nd December 2008, 07:38 AM   #4
glt is offline glt  United States
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Do you mean wiring in the amp or wiring in the speakers?
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Old 22nd December 2008, 10:46 AM   #5
Eva is offline Eva  Spain
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The fault is in room acoustics or in the own speakers. Try to play with speaker placement, listening position and room conditioning (thick carpets and "soft" absorbing furniture may help a lot).

Until clipping, any amplifier will provide exactly the same bass output no matter what power supply is employed. There are too many no-brain myths about that.
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Old 22nd December 2008, 12:48 PM   #6
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Quote:
Originally posted by Eva
The fault is in room acoustics or in the own speakers. Try to play with speaker placement, listening position and room conditioning (thick carpets and "soft" absorbing furniture may help a lot).

Until clipping, any amplifier will provide exactly the same bass output no matter what power supply is employed. There are too many no-brain myths about that.

You seem to have missed the part where his problem was solved and it had nothing to do with anything you're talking about. All amps sounding alike, under any unknown circumstance, is as much a no brain myth as any
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Old 22nd December 2008, 01:09 PM   #7
bjorge is offline bjorge  Norway
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Why not share this solution with us ? there would be more of us interested in this...
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Old 22nd December 2008, 01:23 PM   #8
Kip is offline Kip  United States
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I am building a pair of UCD700HG monos an would like to know the wiring info.
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Old 22nd December 2008, 02:12 PM   #9
Pafi is offline Pafi  Hungary
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I guess the problem was in connection with the differential input.
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Old 22nd December 2008, 02:50 PM   #10
Eva is offline Eva  Spain
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Reversed polarity in one side decribed as "loose bass"? (in audiophile words)

Considering that the audible effect of having opposite polarities on each channel is sooooo damn obvious...
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