Hypex DSP module(s)

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#1,408
emptyroomsystems said:
A question about the outputs of the DLCP. Are there Elco's in the signal path, that should/could be bypassed? I did not trace them down on the PCB yet, but are there a few of them around the DACS/OPAs? Anyone did try to do this yet?
Click to expand...

So the hypex team would design a state-of-art DSP system, but then put some bad electrolytic capacitors in the signal path? Well, fortunately the internet is full of hobbyists who know better... 🙂
 
#1,414
Finally I finished my DLCP.. 🙂 (its just test box from some old satellite receiver)
I did some 3 way configuration but I still have a couple a question:

1. When I put some 2nd order LowPass and HighPass filters at frequencies that I previous had use, I'm getting big holes in crossover range. OK, I read from the manual that I can combine two second order biquad and get 4th order crossover but there are only examples and calculations for Bassel and Butterworth filters.
So, what do you suggest to use as crossover filter? Previously it's been Linkwitz–Riley 4th order and it was OK, the same freq for Lowpass and Highpass, without any holes in that region. Can I use Linkwitz–Riley filters and if I can, how?
2. After first measurement (of left sub driver for example), I get some magnitude and I want to correct that magnitude to be the closest to flat response, so I use filters. Do I need always to send filters to device to check my correction or there is some way to put all filters which will apply to measurements without always sending to device, and just to send them at the end of correction?
 

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#1,415
1. If you get a big dip, you may have to reverse polarity or adjust delay on one of the drivers.
You can use whatever crossover topology you wish I guess, ït's a DSP 🙂
To make higher order filters just add a biquad, two 0,71 Q filters make up a 4th order LR filter i belive.
When you choose the HP2/LP2 option you can adjust the Q to Your liking.

2. You may make several adjustments and send them all at the same time to the DLCP. But it's advisable to send one at a time and check with a measurement sweep.
It will give you more control when making adjustments to your speakers.
 
#1,416
eirik hansen said:
1. If you get a big dip, you may have to reverse polarity or adjust delay on one of the drivers.
You can use whatever crossover topology you wish I guess, ït's a DSP 🙂
To make higher order filters just add a biquad, two 0,71 Q filters make up a 4th order LR filter i belive.
When you choose the HP2/LP2 option you can adjust the Q to Your liking.

2. You may make several adjustments and send them all at the same time to the DLCP. But it's advisable to send one at a time and check with a measurement sweep.
It will give you more control when making adjustments to your speakers.
Click to expand...

Thank you for explanation! Now it's obvious where I made a mistake(s)..🙂
 
#1,419
DLCP chaining

Chaining of two or more DLCPs sometimes rises questions on wiring and set-up.

We did a short overview on how-to interconnect and set-up two units.
You may view or download it here: News , scroll to 15JAN2017.

This overview is based on the DLCP-inputboard settings, that we apply in our PowerBoxes:

  • AES input via RJ45
  • AES output via RJ45
  • USB audio: CAT/AES
  • S6 open = "other position" in manual R3
Hope, the overview eases your decision towards this well engineered ADC/DSP/DAC unit from Hypex.


Best, Frank
 
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