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Old 1st September 2005, 08:19 AM   #1
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Default Any news on UCD700?

JP/ Bruno,

Any news on the UCD700? When will it be available? Are there any preliminary specs/features sheet yet?
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Old 8th September 2005, 02:16 PM   #2
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Is still in progress. We will evaluate the preproduction model next week.

I will post next week some measurments graphs!

Regards,

Jan-Peter
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Old 8th September 2005, 05:44 PM   #3
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Default Output current

JP,
is the increase in output power of the UCD700 modules the result of:
- a higher maximum voltage (what is the increase compared to the UCD400)
- higher maximum output current what is the increase compared to the UCD400)
- or a little of both

Thanks
Henk
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Old 12th September 2005, 07:28 AM   #4
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The UcD700 runs on 90VDC maximum and can deliver 30A piek.

This week I will post some measurements graphs.

It's a much more complex design as the UcD400!

Regards,

Jan-Peter
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Old 28th September 2005, 05:40 PM   #5
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Default UcD700

My 1st post here. Have reviewed UcD400Q&A (phew). Run a pair of B&W800s which soak up 500w rms per channel. Am looking to replace huge aging Nakamichi PA-7 amp, so looking for more power than UcD400 can offer.

Saw you might be considering a bridged UcD400 product. If one UcD400 works best into nominal 4ohms, each amp in the bridged pair would see 2ohms, not 4. This would increase the current needed beyond limits. Not a good idea. Am pleased to see 90v on the job. This implies a single more powerful amp, not a bridged pair? Also would allow mad dogs to consider bridging two UcD700. I'm not quite sure what would happen if one tried to bridge a pair of already bridged amps (ie 4 amps total) !!!
Also, overall probably a cheaper way to go?
Cheers Bruce.
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Old 28th September 2005, 07:25 PM   #6
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Since they're 900W into 2 ohms you'd have 1800 watts bridged.

If you tried to run two bridged amps in parallel you'll hear their difference frequencies.
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Old 29th September 2005, 03:56 AM   #7
ghemink is offline ghemink  Netherlands
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Default Re: UcD700

Quote:
Originally posted by raediant
My 1st post here. Have reviewed UcD400Q&A (phew). Run a pair of B&W800s which soak up 500w rms per channel. Am looking to replace huge aging Nakamichi PA-7 amp, so looking for more power than UcD400 can offer.

Saw you might be considering a bridged UcD400 product. If one UcD400 works best into nominal 4ohms, each amp in the bridged pair would see 2ohms, not 4. This would increase the current needed beyond limits. Not a good idea. Am pleased to see 90v on the job. This implies a single more powerful amp, not a bridged pair? Also would allow mad dogs to consider bridging two UcD700. I'm not quite sure what would happen if one tried to bridge a pair of already bridged amps (ie 4 amps total) !!!
Also, overall probably a cheaper way to go?
Cheers Bruce.

The UcD700 seems to be unbridged as it uses a 90V supply, for a bridged amp, a lower supply could be used. So you should be able to bridge them. In general, you can not bridge an amp that is already bridged. Although I think remember seeing a trick somewhere on the net where they did it, I remember it was a very dirty trick so I did not consider it as a desired solution. I think they used a floating power supply that was modulated by an amp or something like that.

Gertjan
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Old 29th September 2005, 04:36 AM   #8
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Default Re: UcD700

Quote:
Originally posted by raediant
Am pleased to see 90v on the job. This implies a single more powerful amp, not a bridged pair? Also would allow mad dogs to consider bridging two UcD700.
I'm also waiting on these for my bass guitar rig, which can take 1200W before Xmax (linear) and the MF/HF will use a UCD400.
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Old 29th September 2005, 07:23 PM   #9
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As promised hereby a measurement of the first two protos, who are at the moment working by one of my customers.

The power is really huge out of this new version! In a bridge setup we have something about 1.8kW in 4 ohm

Next week we receive a small pre-production batch, when we have done all our tests and everything is still ok, the product is ready for the first production batch. In about 6 weeks from now the amps must be on stock.

Regards,

Jan-Peter
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Old 29th September 2005, 08:31 PM   #10
jam is offline jam  United States
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Jan-Peter,

This is good news...................any plans for a high power bridged amp?

Regards,
Jam
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