I have been looking for an Active Crossover, that will not bring a lot additional distortion into my system. The Behringer DCX looks very nice, but I have heard that its only really good for the lowbass crossovers, and not for the more revealing cross to tweeter.
I'm not good with tweaking so I would very much prefer an Active XO that sounds great out of the box. Have you got any interresting recommendations, cheap would deffinately be a bonus :0)
I don't really need a lot of functions, only the crossover, and maybe a delay function.
thank you!
I'm not good with tweaking so I would very much prefer an Active XO that sounds great out of the box. Have you got any interresting recommendations, cheap would deffinately be a bonus :0)
I don't really need a lot of functions, only the crossover, and maybe a delay function.
thank you!
Hi,
We are currently in process of development of
a digital crossover. The work is in rather early phase
unfortunately so there is no any finished product yet.
Actually the prototype board lays currently on our kitchen table.
But for further information of the company that develops
it, please have a look at its web page:
http://www.iti.fi
It may someday be a finished product. ITI has also
other embedded products in its product range, one of
the latest is MPC5200 board. A PowerPC can be by the way
used as a control processor for the DSP board. The
PowerPC boards can run either embedded Linux or
Katix RTOS. Katix is by the way a open source project:
http://www.katix.org
Anyway, the DSP being used is a 233 MHz floating point
DSP from Texas. I don't remember its exact model number.
It is rather powerful and can be programmed with C.
The advantage of this is that for example a SynC modular
ensemble is therefore pretty easy to port for the DSP
(no need to take into account the fixed point arithmetics etc.).
We have been planning to use some 24 bit / 192 kHz codecs
(A/D & D/A converters).
Anyway, when it is ready, I am planning to use it in my
speakers.
Best Wishes,
Karoliina
P.S. I am not an employee of ITI.
We are currently in process of development of
a digital crossover. The work is in rather early phase
unfortunately so there is no any finished product yet.
Actually the prototype board lays currently on our kitchen table.
But for further information of the company that develops
it, please have a look at its web page:
http://www.iti.fi
It may someday be a finished product. ITI has also
other embedded products in its product range, one of
the latest is MPC5200 board. A PowerPC can be by the way
used as a control processor for the DSP board. The
PowerPC boards can run either embedded Linux or
Katix RTOS. Katix is by the way a open source project:
http://www.katix.org
Anyway, the DSP being used is a 233 MHz floating point
DSP from Texas. I don't remember its exact model number.
It is rather powerful and can be programmed with C.
The advantage of this is that for example a SynC modular
ensemble is therefore pretty easy to port for the DSP
(no need to take into account the fixed point arithmetics etc.).
We have been planning to use some 24 bit / 192 kHz codecs
(A/D & D/A converters).
Anyway, when it is ready, I am planning to use it in my
speakers.
Best Wishes,
Karoliina
P.S. I am not an employee of ITI.
dezzz said:
Less tweekable, but much better
You could have a look at Nelson Pass's XVR1. Not cheap, but I suspect they are very good.
Other options
DBX Driverack PA - roughly $100 US more than the DCX2496
BSS is higher quality and higher price. Pinkmouse is pointing you in a good direction with the BSS minidrive.
And in the non-digital realm one of the Marchand units at http://www.marchandelec.com/ however, they don't have delay.
Marchand makes tube units if you're interested _sly grin_ and has a good reputation within the home audio community.
If you need delay, you really are better off going digital.
Digital Pro crossovers and "high end" can easily go up above four or five thousand dollars.
Pershaps you might help us narrow the field for you somewhat if you specify a range in dollars, other than simply "high end" _grin_
regards
Ken L
DBX Driverack PA - roughly $100 US more than the DCX2496
BSS is higher quality and higher price. Pinkmouse is pointing you in a good direction with the BSS minidrive.
And in the non-digital realm one of the Marchand units at http://www.marchandelec.com/ however, they don't have delay.
Marchand makes tube units if you're interested _sly grin_ and has a good reputation within the home audio community.
If you need delay, you really are better off going digital.
Digital Pro crossovers and "high end" can easily go up above four or five thousand dollars.
Pershaps you might help us narrow the field for you somewhat if you specify a range in dollars, other than simply "high end" _grin_
regards
Ken L
Yes I realized that when Pinkmouse suggested the Nelson Pass :0)
And yes I would prefer the cost being around 350$, I know you can't really get the best products at that price, but as I stated I really don't need a lot of features, just a clean sound.
I'll just take a look at the products you mentioned, maybe they are just what I'm looking for. The delay function would be nice, since it would enable be to do some experiments with the 4th Bandpass sub priciples. Digital scares me, but...
Can anyone comment on the sound quality of the DCX2496 unmodified? Especially crossovers in the region: 1500 - 3500 Hz...
It sounds like you'll be nervous with any digital crossover. Used properly there is no reason to be. In your price range there is only the DCX. There are also variable analog crossovers from Behringer, Rane etc but I would think they are a step back.
If digital scares you, get Marchand to make you a custom analog xover. www.marchandelec.com
Steve
If digital scares you, get Marchand to make you a custom analog xover. www.marchandelec.com
Steve
My evaluation results DCX2496
Hello,
I like to give you the results of my evaluation for the DCX2496 as digital crossover.
Until now my system was a “classical” system with Sony DVP-NS 930 SACD-Drive, preamp and stereo poweramp both from ALPS. The speakers I use are Quadral Vulkan (with the legendary Technics ribbon tweeters) with built in passive crossover (standard) and a terminal with direct access to each of the three chassis. All that did not sound bad at all but I wanted to do something more sophisticated to improve the sound of my chain.
In Stereoplay I read an article about a speaker system for studios with active amplification for each chassis and a digital crossover. The test sounds very very good but the speakers were priced in the 20.000 Euro region which was too much for me. So I decided to activate my Quadral Vulkans by using one power amp for each chassis and a digital crossover.
At first step I tested the DCX2496 (great price) in my current chain to decide if I could use it or not. My ALPS preamp has the possibility to insert devices in the chain. I took the DCX2494 and inserted it (all filters off) to find out how it influences the sound. With the ALPS preamp I have the possibility to enable and disable the inserted device so I really could do an A-B-test. I tested with a lot of different CDs and SACDs. What I did was a real blind test. I let my wife switch the inserted DCX2496 in and out and I tried to identify the state only by listening. Believe me or not, there was no audible difference between DCX2496 in or out. I just had no chance to identify the difference. Even with SACDs, where the difference to CDs is clearly audible, I could not hear any difference regarding the DCX2496. This result is really encouraging because with the DCX2496 there is a A/D and D/A converter in the chain.
So I decided to use this device as my new digital crossover. Next I looked for a power amplifier. Soon I buried my thoughts of using a digital amp because the cost was too high for me and diy seems too complicated and unsafe. I decided to buy the USHER Reference 6 (list price 2900 Euro). This amp has six separate (analog) amplifiers with 125 watts each. I use one amp for each chassis in the Vulkans. Right before the USHER I set up a 8-channel passive volume control from THEL (CP-2500, 350 Euro) which I put I a 19’ 1HE enclosure (http://www.thel-audioworld.de/bauteile/regler/Potis.htm). Currently I use only six channels of the volume control. I connected the passive volume control with low capacity wires from Profigold (PGA 4201) to the power amp. Right before the volume control I inserted the DCX2496. The input of the DCX2496 I connected via digital link to my CD-player. The quality of the CD-player does not matter because the DCX2496 does reclocking (44.1Khz in, 96Khz out) and so jitter is no problem any more!
Before testing the whole thing I repeated the above described insertion test with the USHER power amp. This sounds better (Oh I love the smooth heights of the USHER, it sounds like a tube amp) but even here I could not hear any difference between DCX2496 in or out.
Now I need a method to do A-B comparison between my old system and the new active concept. Therefore I installed a pack of 12A relays in the back of my Vulkans , allowing me to switch between the internal passive crossover which was fed by the ALPS amp chain and the USHER with the DCX2496.
Ok, but how to set up the DCX2496? First guess: use 180Hz and 5Khz as cut-off frequencies and 48db/oct Linkwitz-Riley Crossovers. Oh, it sounded so horrible!!!! All I love in my chain was gone. I adjusted the DCX2496 played around but with no success. The more I played the worst it got.
Next I turned my living room in an audio lab (take care of your wife, she might not love it at all!). Using my PC with it’s M-Audio 24/96 audio card I measured the frequency response of the built in passive crossover directly at the speaker chassis (by wire, not by microphone). So I got an impression how the digital crossover has to be tailored. I found out Quadral used 12db/oct filters and a lot of other components to equalize the frequency response. Well, the DCX2496 has built in equalizers for each speaker channel which I tailored the way I got exactly the same frequency response as the passive crossover. This was a lot of work!!
The A-B-test after this procedure was much better. The activated speakers sound as I expected, nearly the same as with the passive crossover. But there was a difference! The bass was more tight, the heights more brilliant. I could clearly hear the improvement of the sound. I could not tell if this comes from the USHER or the active concept. Well what else could be done?
Well, the DCX2496 gives me the ability of time correction. Its setup is quite simple. I used a measurement microphone from Behringer, connected it to the DCX2496 and let it run. Half a minute later the delays were corrected and I was ready for my next A-B-test.
WOW!!! I could not believe it. Imagine the difference you get if you switch from mono to stereo. This is comparable with the difference you get if you switch from my old system to the activated system with corrected delay. The stage opens widely. You hear each instrument exactly at the position it belongs to. All sounds so open and so transparent, just fantastic. The system really cries for more volume. Increasing the volume you never get the impression that it is too much. The sound stays open and clear and gives a lot of fun! I never got tired listening at high volumes (Hope you have prepared a cinema ticket for your wife. Give it to her now!)
With that now much tighter bass I had the expression there were some room resonance’s in the bass region. Again I took the microphone and made a mls-measurement of the frequency response at my listening position. I did two measurements one for the right channel, one for the left, imported the data to MS-Excel an visualized it on a diagram. I was not astonished to see that there were differences between the right and the left channel in the bass region. This depends of the placement of the speakers in my living room. I also found two peaks (more than 15db) one at 151Hz and one at 58Hz. I programmed the parametric equalizers of the DCX2496 to suppress these two peaks. On the frequency curve now the response was quite flat but the A-B-test was frustrating. The whole warmth f the bass was gone. The sound was synthetically. I decided to find out the right suppression value by carefully listening and experimenting with different levels of suppression. This is the point where the whole thing starts becoming subjective. I decided to stop at a suppression value of –6db. This fits my taste of a nice bass.
So what did I learn?
I learned that the impression of “room” is a function of correct phase (delay) adjustment. I believe this is also the reason why SACDs give a better room impression than CDs. Because of their higher time resolution they can better reproduce the phase correlation and the better the phase correlation the better and precise is the room impression.
I also learned that the absence of a passive crossover with all its damping elements like coils, capacitors and resistors gives a more tight compact and precise sound reproduction. Now I will smile about speakers with so called bi-wiring/amping terminals. In those speakers there are still the passive elements between the chassis and the amplifier and the advantage of direct coupling is gone.
In respect of the DCX2496 I learned that a digital crossover is always worth the effort. For me there is no audible difference with DCX2494 in an out. This means to me the device is absolutely ok. I did not need more expansive hardware if I could no more hear the difference.
So if anybody is interested in hearing the difference between passive and active crossover he is hearty invited to visit me a my home in Erlangen Germany. Just mail.
Charly
Hello,
I like to give you the results of my evaluation for the DCX2496 as digital crossover.
Until now my system was a “classical” system with Sony DVP-NS 930 SACD-Drive, preamp and stereo poweramp both from ALPS. The speakers I use are Quadral Vulkan (with the legendary Technics ribbon tweeters) with built in passive crossover (standard) and a terminal with direct access to each of the three chassis. All that did not sound bad at all but I wanted to do something more sophisticated to improve the sound of my chain.
In Stereoplay I read an article about a speaker system for studios with active amplification for each chassis and a digital crossover. The test sounds very very good but the speakers were priced in the 20.000 Euro region which was too much for me. So I decided to activate my Quadral Vulkans by using one power amp for each chassis and a digital crossover.
At first step I tested the DCX2496 (great price) in my current chain to decide if I could use it or not. My ALPS preamp has the possibility to insert devices in the chain. I took the DCX2494 and inserted it (all filters off) to find out how it influences the sound. With the ALPS preamp I have the possibility to enable and disable the inserted device so I really could do an A-B-test. I tested with a lot of different CDs and SACDs. What I did was a real blind test. I let my wife switch the inserted DCX2496 in and out and I tried to identify the state only by listening. Believe me or not, there was no audible difference between DCX2496 in or out. I just had no chance to identify the difference. Even with SACDs, where the difference to CDs is clearly audible, I could not hear any difference regarding the DCX2496. This result is really encouraging because with the DCX2496 there is a A/D and D/A converter in the chain.
So I decided to use this device as my new digital crossover. Next I looked for a power amplifier. Soon I buried my thoughts of using a digital amp because the cost was too high for me and diy seems too complicated and unsafe. I decided to buy the USHER Reference 6 (list price 2900 Euro). This amp has six separate (analog) amplifiers with 125 watts each. I use one amp for each chassis in the Vulkans. Right before the USHER I set up a 8-channel passive volume control from THEL (CP-2500, 350 Euro) which I put I a 19’ 1HE enclosure (http://www.thel-audioworld.de/bauteile/regler/Potis.htm). Currently I use only six channels of the volume control. I connected the passive volume control with low capacity wires from Profigold (PGA 4201) to the power amp. Right before the volume control I inserted the DCX2496. The input of the DCX2496 I connected via digital link to my CD-player. The quality of the CD-player does not matter because the DCX2496 does reclocking (44.1Khz in, 96Khz out) and so jitter is no problem any more!
Before testing the whole thing I repeated the above described insertion test with the USHER power amp. This sounds better (Oh I love the smooth heights of the USHER, it sounds like a tube amp) but even here I could not hear any difference between DCX2496 in or out.
Now I need a method to do A-B comparison between my old system and the new active concept. Therefore I installed a pack of 12A relays in the back of my Vulkans , allowing me to switch between the internal passive crossover which was fed by the ALPS amp chain and the USHER with the DCX2496.
Ok, but how to set up the DCX2496? First guess: use 180Hz and 5Khz as cut-off frequencies and 48db/oct Linkwitz-Riley Crossovers. Oh, it sounded so horrible!!!! All I love in my chain was gone. I adjusted the DCX2496 played around but with no success. The more I played the worst it got.
Next I turned my living room in an audio lab (take care of your wife, she might not love it at all!). Using my PC with it’s M-Audio 24/96 audio card I measured the frequency response of the built in passive crossover directly at the speaker chassis (by wire, not by microphone). So I got an impression how the digital crossover has to be tailored. I found out Quadral used 12db/oct filters and a lot of other components to equalize the frequency response. Well, the DCX2496 has built in equalizers for each speaker channel which I tailored the way I got exactly the same frequency response as the passive crossover. This was a lot of work!!
The A-B-test after this procedure was much better. The activated speakers sound as I expected, nearly the same as with the passive crossover. But there was a difference! The bass was more tight, the heights more brilliant. I could clearly hear the improvement of the sound. I could not tell if this comes from the USHER or the active concept. Well what else could be done?
Well, the DCX2496 gives me the ability of time correction. Its setup is quite simple. I used a measurement microphone from Behringer, connected it to the DCX2496 and let it run. Half a minute later the delays were corrected and I was ready for my next A-B-test.
WOW!!! I could not believe it. Imagine the difference you get if you switch from mono to stereo. This is comparable with the difference you get if you switch from my old system to the activated system with corrected delay. The stage opens widely. You hear each instrument exactly at the position it belongs to. All sounds so open and so transparent, just fantastic. The system really cries for more volume. Increasing the volume you never get the impression that it is too much. The sound stays open and clear and gives a lot of fun! I never got tired listening at high volumes (Hope you have prepared a cinema ticket for your wife. Give it to her now!)
With that now much tighter bass I had the expression there were some room resonance’s in the bass region. Again I took the microphone and made a mls-measurement of the frequency response at my listening position. I did two measurements one for the right channel, one for the left, imported the data to MS-Excel an visualized it on a diagram. I was not astonished to see that there were differences between the right and the left channel in the bass region. This depends of the placement of the speakers in my living room. I also found two peaks (more than 15db) one at 151Hz and one at 58Hz. I programmed the parametric equalizers of the DCX2496 to suppress these two peaks. On the frequency curve now the response was quite flat but the A-B-test was frustrating. The whole warmth f the bass was gone. The sound was synthetically. I decided to find out the right suppression value by carefully listening and experimenting with different levels of suppression. This is the point where the whole thing starts becoming subjective. I decided to stop at a suppression value of –6db. This fits my taste of a nice bass.
So what did I learn?
I learned that the impression of “room” is a function of correct phase (delay) adjustment. I believe this is also the reason why SACDs give a better room impression than CDs. Because of their higher time resolution they can better reproduce the phase correlation and the better the phase correlation the better and precise is the room impression.
I also learned that the absence of a passive crossover with all its damping elements like coils, capacitors and resistors gives a more tight compact and precise sound reproduction. Now I will smile about speakers with so called bi-wiring/amping terminals. In those speakers there are still the passive elements between the chassis and the amplifier and the advantage of direct coupling is gone.
In respect of the DCX2496 I learned that a digital crossover is always worth the effort. For me there is no audible difference with DCX2494 in an out. This means to me the device is absolutely ok. I did not need more expansive hardware if I could no more hear the difference.
So if anybody is interested in hearing the difference between passive and active crossover he is hearty invited to visit me a my home in Erlangen Germany. Just mail.
Charly
My DCX2496 report
I am happy that my comments were what you expected.
Well, building up an active configuration is expensive especially regarding to the power amps. Until now the whole project ate up 5000 Euro. Included in this price is the DCX2496, the USHER R6 the passive volume control and an input switch to select the audio source. Also I needed some signal converters to bring the async. cinch signals to symmetric XLR needed by the DCX2496 (analogue and digital). Also I need speaker wires, a lot of connectors and a lot of bananas.
I tried to find a less expensive solution for the power amp. I checked out the price for a diy amp with elements from THEL-audio (IQ-Amp, http://www.thel-audioworld.de/module/iqamp/iqamp.htm). Summing up all components needed for a six-channel power amp I got 2400 Euro. Well, a bit cheaper than the USHER (2900) but a lot more work do be done. So I decided to buy the USHER R6.
Overall I guess there is not so much potential for a more inexpensive solution.
Charly
I am happy that my comments were what you expected.
Well, building up an active configuration is expensive especially regarding to the power amps. Until now the whole project ate up 5000 Euro. Included in this price is the DCX2496, the USHER R6 the passive volume control and an input switch to select the audio source. Also I needed some signal converters to bring the async. cinch signals to symmetric XLR needed by the DCX2496 (analogue and digital). Also I need speaker wires, a lot of connectors and a lot of bananas.
I tried to find a less expensive solution for the power amp. I checked out the price for a diy amp with elements from THEL-audio (IQ-Amp, http://www.thel-audioworld.de/module/iqamp/iqamp.htm). Summing up all components needed for a six-channel power amp I got 2400 Euro. Well, a bit cheaper than the USHER (2900) but a lot more work do be done. So I decided to buy the USHER R6.
Overall I guess there is not so much potential for a more inexpensive solution.
Charly
I wouldn't recommend the DCX2496. She's got the DSP but the algoriths use just regular IIR which is as good or bad as analog circuits like usual 4th order Linkwitz-Riley XO's. I mean it's not phase linear. It may be good if it's got low enough SNR but it's nothing spectacular, and offers nothing you couldn't do in analog.
mhelin said:
The pros that use them generally believe that the digital units be they Bheringer or whatever are usually cleaner than a comparative priced analogue.
mhelin said:
Delay can be a big issue, if you need it. You can do it in analogue, but it is cleaner in digital.
The benefits of digital crossovers over analogue are clearly enough to convince a diehard tube fan like me _big grin_.
Newform Research clearly has a different opinion of the DCX2496 than you do. To see what I mean go to:
http://www.newformresearch.com/
The way their site is organized you have to click on expert advice, then digital.
Newform thinks well enough of the DCX2496 to recommend it's use with their speakers along with the Panasonic XR45 digital receiver with their speakers.
Regards
Ken L
If you have to have a digital filter, it really should be before that DAC between the CD transport. It sound’s like your wanting to add another AD-DA conversion process along the chain, maybe I miss understanding what you’re doing.
Anyway, I would just rather to a Bessel, Butterworth are realization and do in the analog domain. Adding more DSPs and processors just is not my thing of getting quality sound. I have never head an equalizer in audiophile system that improved the sound quality. There are so many different problems associated with doing a lot of real time digital filtering that it just not worth it unless you have a professional gig, like a big hall. In addition, this BEHRINGER DEQ2496 seems to be fairly cheap, you should not expect much from one.
Well my take on active crossovers, is the standard approach or adding the amps and filters in the DAC off the IV converter. You all ready have an aliasing filter just parallel several more filters. The final amps might need to have some gain and you could all a multiple deck volume control to drive the amps.
Anyway, I would just rather to a Bessel, Butterworth are realization and do in the analog domain. Adding more DSPs and processors just is not my thing of getting quality sound. I have never head an equalizer in audiophile system that improved the sound quality. There are so many different problems associated with doing a lot of real time digital filtering that it just not worth it unless you have a professional gig, like a big hall. In addition, this BEHRINGER DEQ2496 seems to be fairly cheap, you should not expect much from one.
Well my take on active crossovers, is the standard approach or adding the amps and filters in the DAC off the IV converter. You all ready have an aliasing filter just parallel several more filters. The final amps might need to have some gain and you could all a multiple deck volume control to drive the amps.
The noise/hiss reports on the early units of the predecessor, the 8024, almost turned me off, but I did not find any reports of this on Behringer DEQ2496. I went ahead anyway because the $299 US + $50 microphone was what I could spend at the time to get this capability.
It has been quite a boost to my system. I was running off of a not that great CD player, and the Beringer DEQ2496 Ultrapro gave me some nice capability and made my system much more enjoyable:
1) gave me a new DAC that is much better than my CD player
2) let me do room compensation. After tweeking the automatic setting and A/Bing - the room compensation EQ is noticably better.
3) Gives me a 1/10 octave parametric EQ that was very helpful in knocking down a bothersome 46Hz room resonance peak
4) Lets me drive my subwoofers with approximate Linkwitz transforms via the EQ
5) gives me easy quick setting of preferences. I can have mine and also have instant setting to satisfy a teen that likes the highs brighter.
So,yes it's only $299 US and a relatively high sales volume unit and certainly I would expect higher end units to be incrementally better, but I don't think this unit should be dismissed. It is very capable.
Here is a review of how of the predecessor, the 8024, was used.
http://www.enjoythemusic.com/magazine/equipment/0101/behringer8024.htm
It has been quite a boost to my system. I was running off of a not that great CD player, and the Beringer DEQ2496 Ultrapro gave me some nice capability and made my system much more enjoyable:
1) gave me a new DAC that is much better than my CD player
2) let me do room compensation. After tweeking the automatic setting and A/Bing - the room compensation EQ is noticably better.
3) Gives me a 1/10 octave parametric EQ that was very helpful in knocking down a bothersome 46Hz room resonance peak
4) Lets me drive my subwoofers with approximate Linkwitz transforms via the EQ
5) gives me easy quick setting of preferences. I can have mine and also have instant setting to satisfy a teen that likes the highs brighter.
So,yes it's only $299 US and a relatively high sales volume unit and certainly I would expect higher end units to be incrementally better, but I don't think this unit should be dismissed. It is very capable.
Here is a review of how of the predecessor, the 8024, was used.
http://www.enjoythemusic.com/magazine/equipment/0101/behringer8024.htm
Although you need a physical converter or cable to convert from unbalanced to the XLR the DCX2496 needs, you do not have to do any electrical conversion. Two of the pins need to be bridged on the XLR side of the cable or adapter. The Behringer recognizes the input or output is unbalanced and compensates. I made cables to go from unbalanced "RCA" jacks on my phono preamp to the analog in of the DEQ2496. I also made them for the XLR out of the DEQ2496 to my active crossover. They both work fine.
Ken L said:
As long as you are not able to control both the phase and the frequency response you have only half a solution for a XO. With Behringer you can control the FR but the phase response is almost fixed (the same as for the analog counterparts), I admit the delay is a nice feature which helps a lot in time alignment of the drivers. If the DCX2496 is sufficient for you then it's OK. I have some analog Behriger gear and it's just fine in quality, that's not a problem too. However, a digital XO can be much more than just a simulation of an analog filter, with the FIR type filters you could do almost anything in phase and frequency control. Obviously for the best results you would need rather long IR (impulse response for the filter) which delays the signal by the half or IR length (in time domain - samples) so in home threater system you might have to find some way to delay the video stream. Don't know if there are algorithms that have less latency. In Linux you could run the Brutefir as your XO combined with a multichannel sound card (ice1712 driver in Alsa supports many of them using VIA/ICE Envy24 chip, also Hammerfall is supported and many other).
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