Hypex UcD AS2.100

[Matthijs_Hypex]

Originally Posted by 4real

So, any more on using a higher voltage to get more power? Or even use a SMPS400 or SMPS180?

Best and safest to do is to keep the same voltage but with more power (VA). The design is based on the current voltages. If you'd go for higher voltages some components need to dissipate more and produce more heat.

A SMPS will be a bit of overkill because there is already a power supply section on the board.

The extra 10VAC could be made with manual windings or indeed with a second transformer.

[Jan-Peter]

Originally Posted by 4real

Hi there,

I'm currently looking for replacing my UCD400HG's with an active setup. AS2.100 and PSC2.400 are both looking good. With the AS2.100 I really don'y know about the power... Right now, 400W is far to much for me, but 100W maybe to little?

Can I replace the toroidal of the AS2.100 with one with a larger voltage? Since the new AS2.100 are fitted with UCD180OEM's, they should be able to cope with that. How about the rest of the board?

Since I run almost everything digital, it would be a shame to feed both AS2.100 and PSC2.400 with analoge. AS2.100 has a convenient volume control, so that is fine. PSC2.40 does not, It can only be controlled via USB. Are there any options to get this done any easier (and you'll have to control two of them)? I'd see two options:

- get some more info on the volume control part of the USB protocol, and implement this in a uC.
- Use some kind of SPDIF/AES volume control, I didn't find much about these on the net. Any ideas?

Another option would be to have a Windows PC at the ready, but since I don't own such a thing, and will need to use a VM to program the DSP already, I don't consider that a serious option.

You better wait until we'll have the DLCP ready for ordering.... This project is again in our developments plans..., starting will be somewhere in January.

[4real]

Originally Posted by Jan-Peter

You better wait until we'll have the DLCP ready for ordering.... This project is again in our developments plans..., starting will be somewhere in January.

Sure that would be nice, but form a budget point of view, probably double or triple the price for the same amount of channels?

[Jan-Peter]

Originally Posted by 4real

Sure that would be nice, but form a budget point of view, probably double or triple the price for the same amount of channels?

Correct... However we do not recommend modifying one of the plate amps to increase output power. Not to forget you will lose your warranty.

[4real]

So that would lease my other option for the PSC:

Use a digital volume control via one of the ASRC chips available (most of them have some kind of attenuation register that is usable for this). This would also mean adding an extra ADC for analog.

Al of this will also cost money and needs to be designed and tested..

So the last one would be using the USB protocol to do this. I guess Hypex won't reveal the volume part of the protocol?

[strangerinthenet]

Dear friends,
I am about to order 2 AS2.100 for my speakers. Each will power two SB Acoustics SB17NRXC35-8 in parallel for the low-mid freqs and 1 ESS Great Heil in a bipole/dipole. The xover would be around 1600-2000hz. The whole thing should be quite efficient at 92db. I am wondering if the AS2.100 would provide enough power to drive them loud without distortion. I wasn't able to find any data about THD/THD+N at full power and (for another project) the power output under 8 Ohm load for the AS2.100.
Thank you in advance for any help.
Oreste

[Matthijs_Hypex]

Originally Posted by strangerinthenet

Dear friends,
I am about to order 2 AS2.100 for my speakers. Each will power two SB Acoustics SB17NRXC35-8 in parallel for the low-mid freqs and 1 ESS Great Heil in a bipole/dipole. The xover would be around 1600-2000hz. The whole thing should be quite efficient at 92db. I am wondering if the AS2.100 would provide enough power to drive them loud without distortion. I wasn't able to find any data about THD/THD+N at full power and (for another project) the power output under 8 Ohm load for the AS2.100.
Thank you in advance for any help.
Oreste

Hi,

The AS2.100 uses two UcD180LP modules, you can find more information about the THD and power in the datasheet. Do note that in the AS2 the power is limited by the transformer and therfore max 90 to 100Watts in total.

At 8Ohms the UcD180LP could deliver up to 120Watts on a more powerfull supply.

[strangerinthenet]

Thanks,
as I see it, because of the limited supply of power, the as2.100 should not be able to reach power levels where thd could become a problem. I'm still wondering if the watt output would be sufficient to drive my 4 ohm 92db speakers in a 25 square meter room.
Sorry for that, but, as you probably noticed, I'm still a novice at DIY

[strangerinthenet]

Since the speakers that the as2.100s will power are going to be a sealed design, I was wondering if the as2.100 is airtight and if it is going to have cooling problems in a sealed design.
Thanks
Oreste

[ds23man]

Originally Posted by strangerinthenet

Since the speakers that the as2.100s will power are going to be a sealed design, I was wondering if the as2.100 is airtight and if it is going to have cooling problems in a sealed design.
Thanks
Oreste

It is not airtight, you will need a seperate chamber for the as2.100


Gerhard