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Old 29th June 2006, 09:41 PM   #11
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Classd4sure,

Thanks for the feedback. I bought the UdC-180, built two mono blocks, and they have been performing great with thier +/-47 volt supplies. Now that I have cleared that hurdle, I may work on improving the filtering in the PS. I would like to add chokes, but haven found a sutible e-core chock for the job. They would also drpo the PS voltage down a tad.

Thanks again.

Cheers,

Ray
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Old 30th June 2006, 05:06 AM   #12
MOER is offline MOER  United States
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Default UCD at +/-48v

Sorry Chris, but UCD180's that have been shipped have STPF14NF10P mosfets installed and these ARE 100v, 15 amp, 15nc, 0.13R FETs.

Run them at +/-48v and see them smoke!

Steve
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Old 30th June 2006, 05:37 AM   #13
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Default Re: UCD at +/-48v

Quote:
Originally posted by MOER
Sorry Chris, but UCD180's that have been shipped have STPF14NF10P mosfets installed and these ARE 100v, 15 amp, 15nc, 0.13R FETs.

Run them at +/-48v and see them smoke!

Steve
We have used the STP14NF10FP and the STP14NF12FP, actually the both STP use exactly the same 120V chip.

Regards,

Jan-Peter
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Old 5th July 2006, 11:12 PM   #14
ekaerin is offline ekaerin  Sweden
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Hi all,
I just bought a pair of UCD 180s. I had 4pieces of 80VA, 35V toroids hanging
around. I wound off 83 turns on each to reach about 32V at high line and
5W load.
Since I have not connected the scope yet to quantify the ringing on edges
if any, I wouln´t sleep well with higher voltages. But if the FETs can take
120V then....Well, I will not Re-wind....


/ Mattias
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Old 5th March 2009, 10:13 AM   #15
bobnob is offline bobnob  United States
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Default Ray Weikel

Ray, do I know you. Did you work at Seattle Radio in the 60s?

Robert Kann

rkann@windstream.net
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Old 5th March 2009, 10:44 AM   #16
col is offline col  Australia
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Default ConnexElectronic TA3020

Don't want to be down on the Hypex modules as I have used them in my own amp projects both Ucd180 and UcD400 and they are excellent.

I recently built an amp with one of the ConnexElectronics Tripath TA3020 boards using a power supply that I had built for a UcD180. It worked a charm and being a stereo module is much cheaper, a serious contender. Also, the TA3020 can take between 40v-62v So your 48v would be perfect. see my website (url below).

ConnexElectronics website:

http://connexelectronic.com/product_...7cncvg2bn7qj31

CNX also has a thread in venders bazaar:

NEW Audio amplifier kits, modules and many others.

col.
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Old 7th March 2009, 02:50 AM   #17
Ceibal is offline Ceibal  United States
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Default Re: ConnexElectronic TA3020

Quote:
Originally posted by col
Don't want to be down on the Hypex modules as I have used them in my own amp projects both Ucd180 and UcD400 and they are excellent.

I recently built an amp with one of the ConnexElectronics Tripath TA3020 boards using a power supply that I had built for a UcD180. It worked a charm and being a stereo module is much cheaper, a serious contender. Also, the TA3020 can take between 40v-62v So your 48v would be perfect. see my website (url below).

ConnexElectronics website:

http://connexelectronic.com/product_...7cncvg2bn7qj31

CNX also has a thread in venders bazaar:

NEW Audio amplifier kits, modules and many others.

col.

How does this amp compare with the Hypex ucd400's? I am very interested in the Hypex but the cost is much higher than the amps on Connexelectronic. Sometimes, you get what you pay for though.
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Old 7th March 2009, 06:11 AM   #18
col is offline col  Australia
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I find it comparable to the UcD180, I am running it off the same kind of power supply. Don't know about comparing it too the UcD400 that would require me to beef up my power supply.

col.
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