DIY a decent active crossover on a budget

[mdsimon2]

Oh I know you can now. I have access to one from a friend of mine that isnt using it, if I want it, but I think it would be a sideways move. No, any replacement for the 2x4HD will be a significant upgrade in DSP power and cleaner integration than what the minisharc offers. the use of molex type pin headers for i2s is lazy too IMO (is there only 1 x GND pin on the minisharc i2s header too? not exactly good EMC practice). not saying its audible, but it does grate my engineering nerve

The miniSHARC header has 7 grounds pins but the layout is frustrating because they are not located adjacent to the data / clock pins. Still better than the abomination that is the 2X4HD header.

Michael

 

[Skeptischism]

Ah, well that's a plus. indeed the 2x4HD header is sure something ...

 

[gody7334]

Will you consider ASP like this
https://www.linkwitzlab.com/orion_asp.htm

you can buy it from: https://www.aliexpress.com/wholesal...603092322&SearchText=linkwitz+riley+crossover

there a version which you can adjust crossover point by yourself, but only sell in Taobao:
https://www.superbuy.com/en/page/buy/?nTag=Home-search&from=search-input&_search=url&position=1&url=https://item.taobao.com/item.htm?id=537056054444&ali_trackid=2:mm_119784642_132400295_36218700225&spm=1101.1101.N.N.97ff54a

This will give you most flexibility to addjust crossover point, channel gain, without DSP, DAC problems, and its cheaper.

another solution only use Linux software: https://rtaylor.sites.tru.ca/2013/06/25/digital-crossovereq-with-open-source-software-howto/

 

[cyruz]

Thanks for all of your inputs guys.

So far I didn't have the time to dedicate myself to this. I was sold for the NanoDIGI but I think that the best solution for the price has just been released by MOTU, the Ultralite Mk5.

The price tag is not too far from the budget I stated in the OP and it kinda makes superfluous any DIY at the same price point. I have to compromise for the remote control though...

 

[fluid]

The Ultralite Mk5 looks like a nice solution especially the ten analogue outputs. If you did want to diy then this ES9016 8 channel DAC kit is actually quite good.

https://www.diyinhk.com/shop/audio-...84khz-32bit-es9016-pcm-dxd-dsd-audio-dac.html

It will need power supplies and case etc. I have one and I cannot tell the difference between it and an ES9018 DAC I also built.
It is a datasheet basic design with simple single opamp output stage but it sounds good.

The SABRE Dac's can have their volume controlled via i2c, I have used the Hifiduino code to do this before and it works as well as being able to change the filters etc. Then you can use an old aluminium apple remote or any other remote you teach it the codes too.

 

[Colonel7]

Thanks for all of your inputs guys.

So far I didn't have the time to dedicate myself to this. I was sold for the NanoDIGI but I think that the best solution for the price has just been released by MOTU, the Ultralite Mk5.

The price tag is not too far from the budget I stated in the OP and it kinda makes superfluous any DIY at the same price point. I have to compromise for the remote control though...

Amir has an Ultralite Mk5 in to test

 

[mdsimon2]

The Ultralite Mk5 looks like a nice solution especially the ten analogue outputs. If you did want to diy then this ES9016 8 channel DAC kit is actually quite good.

https://www.diyinhk.com/shop/audio-...84khz-32bit-es9016-pcm-dxd-dsd-audio-dac.html

It will need power supplies and case etc. I have one and I cannot tell the difference between it and an ES9018 DAC I also built.
It is a datasheet basic design with simple single opamp output stage but it sounds good.

The SABRE Dac's can have their volume controlled via i2c, I have used the Hifiduino code to do this before and it works as well as being able to change the filters etc. Then you can use an old aluminium apple remote or any other remote you teach it the codes too.

I second this. I built one of these recently and have been playing around with it, sounds very good. I have a thread with some measurements / learnings which I linked below.

https://www.audiosciencereview.com/forum/index.php?threads/diyinhk-dac-measurements.23629/

I have not yet used it with software crossovers but if you run it async it works well with a miniSHARC + DIGI-FP.

Michael