Hypex UcD AS2.100

[arend-jan]

I came across this link about the Hypex AS2.100. It's in German, but perhaps Google Translator can make something of it.

[Mr Chris]

If you have dipoles or want to share between several speaker sets or don't want to cut holes in your best boxes or just want to experiment safely it's a good idea to box the AS2-100.
Multipurpose box 220x150x64 MB6 is one cheap solution. (CPC EN81783).
To prevent LF/HF cross-connection in two way setup use a 4 pole speaker connector eg Speakon NL4.
With the button PCB as I have it the IR receiver looks out the top of the box. I wanted the LED to point the same way. If you can de-solder the LED with out destroying it you deserve a prize.
All I have to do now is experiment.

Mr Chris.

[Mr Chris]

For convenience I put the control panel / filter designer software on an Asus Eee PC 900 NetBook (XP boot). The graphics chip set is Mobile Intel 915GM/GMS,910ML. The display is shown as Digital Flat Panel (1280x1024) but the maximum adjustable screen resolution is 1280x768. Unfortunately the Filter Designer screen only shows 3 functions, HPF1 to Boost/Cut are not accessible. If I plug in an external VGA monitor run at 1280x1024 and resize the window the graph stretches full screen and the extra functions are still invisible.
Back to the desktop PC...

[Mr Chris]

Screen capture below...

[Matthijs_Hypex]

Do you have the latest software version?

With version 1.3 I get a view like the attachment.

ps. I'm not able to send you email with attachments...

[Mr Chris]

Yes, I have V1.3. It works fine on two other PC's I've tried it on.

[audio-kraut]

Thanks Matthijs,

I found the SPDIF input board on the slave Amp was the culprit.
Hypex sent a new board, and my Kefs are playing fine.

The fine thing about it:

I had a setup, running the kefs and a isobarik sub through a behringer dcx, the subs and the Kefs powered by Bryston 4B and 4Bst.

I am now putting my Brystons on the market. I run two as2.100 digitals in bridged mode and a bash 300 amp on the subwoofer.

I do miss nothing in sound quality. The one thing I do not miss either - a whole bunch o interconnects and speaker wires I do not have to care about anymore.

The next step - setting up a media pc with blueray player/burner, HDTV videocard, m-audio pro soundcard with balanced analogue in from my phono-preamps and wireless controlled with wireless internet connectivity.
The audio then via spdif to the plateamps.

I am just looking for a good auto eq program similar to what the behringer deq can do...


Anyway, I like the plate amps, a lot of bang for the buck when they compete successfully with Bryston amps...now it is just a matter of reliability...
Compresses things enormously, especially with 2 1TB harddrives....

[Mr Cold]

I'm a new user of the AS2.100. I'm slightly confused about how and when the control panel settings from the PC SW are stored in the AS2.100 module.

From the published FAQ I can read that the way to store the configuration is to go stand-by with the on/off switch while power is connected.

This seams a bit dangerous to me since the overall configuration is included in that save operation. For example the Stereo / 2-ch mode is part of that and a mistake may destroy the tweeter if low frequencies are applied.

To me it would be much safer if there were a Store command similar to what you do when loading filter parameters from the PC that cannot easily be modified.

Please let me know if I've misunderstood the function.

[lotuss79]

Any word on whether the High End DSP board will still be coming out in the first quarter of this year?

[Joachim Gerhard]

Hello Bruno and Jan-Peter!
Prof.Hawksford, Dr Greenfield and i did a 4th order L/R filter with phase correction in 1993. We always argued that higher order digital filters cause preringing. That is especially anoying out of axis. I talked to Bruno about that on the Munich AES fair and he was not aware of our work. It is reasuring that you came to the same conclusion independently. Some innovations need 20 years to lead to commercial success.
That myth that 200dB octave filters are posible and desirable in digital has to be destroyed.
ceveat: there has been work done by others that steep filters are posible and desirable ones you go to onther speaker layouts like the D`Áppolito configuration but that is a work in progress. Much more complex then it looks on the surface.