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Old 19th July 2010, 09:18 PM   #21
al2002 is offline al2002  India
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Just curious, why fully automatic? Do you not think user input is essential?

Anyway, here is a program that will do xovers and room correction too:

(((acourate))) - Room Correction, Speaker Optimization and Sound Improvement

Have a read even if you do not intend to get the program.

Originally Posted by Studio Au View Post
Does anyone know if you can setup active crossovers completely automatically with a pc (spdiff input) and a mic, kinda like the way the behringher DEQ8000 auto calibrates the eq speakers to give a flat response?

Would be really nice to plug in speakers and have software optimise everything for the best, most accurate sound.
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Old 20th July 2010, 05:57 PM   #22
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Here is another crossover program to check out. I've been playing around with it. Works well if you need to pipe PCM into the PC then implement digital crossovers. It can play through the compute too but you have to make a digital look either with Jack or a toslink cable out and back in through two sound cards. Interesting product though.
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Old 21st July 2010, 07:57 PM   #23
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My quest was to find a stand alone solution for multi way active.

Just stumbled upon these Hypex plate amps. The cheapest Hypex AS2.100 sounds really good. At 300Euros not that cheap but a very neat solution:

Click the image to open in full size.

Mac Mini Spidf out - 2x Hypex plate amps in the back of the two ways

I am far to into Apple Mac's to trully embrace a HTPC made of a slow cheap nettop and then an assortment of boxes, and amplifiers.

My Main system, 5 piece seperates (dvd, tuner, pre, power, Active XO 2496). Can remain my main system, and the Mac - Hypex be the main HTPC, front room or office system.


With a planned 200 spend on the ION, + Gainclones that would come in at least 100+ each. 500 +/- for integrated input/remote controlled pre-amp/DAC/Active XO and power amp, seems promising. Mac Mini not included.

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Old 16th August 2010, 07:47 PM   #24
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the DCX2496 has ceased to work, perhaps its time to test out the Asus........have an old (2005/6) Core 2 Duo, relatively well specked pc gathering dust, so an 80 sound card may be cheap fix.
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Old 13th September 2010, 04:46 PM   #25
qusp is offline qusp  Australia
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I think the above plate amps (non DSP version perhaps) teamed with a ASIO firewire Maudio interface and logic or similar is the way to go. logic express can be had errmmm.... cheap and plenty of audio units (mac VST) for your EQ duties. or the above with digi input, but using 2 x maudio used or cheaper USB interface with spdif combined into 1 combined device in audio preferences, then you can use the software mixer for the Maudio cards to bounce the tracks to different channels and apply EQ in logic or some other audio unit that is loaded all the time so everything goes through this process.

Last edited by qusp; 13th September 2010 at 04:52 PM.
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Old 24th September 2010, 01:51 PM   #26
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Been looking and looking, and still not found out if nVidia Ion Mini ITX system has enough power (using CUDA) to implement FIR crossover with phase correction? Is it powerful enough to do stereo 2-way? How about stereo 3-way, or 2.5-way (2-way + sub).
http://www.ohmspeakers.com <- all the folks here are my friends
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Old 24th September 2010, 02:53 PM   #27
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Originally Posted by critofur View Post
Been looking and looking, and still not found out if nVidia Ion Mini ITX system has enough power (using CUDA) to implement FIR crossover with phase correction? Is it powerful enough to do stereo 2-way? How about stereo 3-way, or 2.5-way (2-way + sub).
The IONs are scraping the bottom of the barrel as far as CUDA power goes. I'll have to refresh my memory on the numbers, but I thought I looked at it based on Koons original work and figured that it could probably handle a 3-way. I'd be very surprised if it had any difficulty with a 2-way, but I say that without having tried it.

I did run a BruteFIR setup on my Aspire One (the original one) and it seems to handle a 3-way config with (I think) 32k filters just fine, but with higher latency than you'll likely get from the CUDA approach.

I'm moving slowly as always, but I'm working on a multi-amp approach using a Revo (ION based) outputting over HDMI (only 2.5 way since my receiver only does 5.1 LPCM over HDMI, unfortunately). I'm tentatively planning to use Reaper to do IIR xovers as a starting point, but ultimately migrating to BruteFIR is in the plans. From my experiments so far, I think this is probably the best bang-for-buck approach to active speakers and has the benefit of solving both the volume control problem as well as the rats-nest of wiring.
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Old 8th February 2012, 09:06 AM   #28
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@dwk did you ever finish this project?
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Old 3rd September 2012, 11:08 AM   #29
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Purchased the three part miniDSP for $200

Digi input, display board 2in 4out and the (yet to be used) 40w digital power amp.

I think this is the best combo so far, is small runs off USB, easy to use and adjust, and very versatile.
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