cheap simple DSP crossover

[Kjeldsen]

I'm looking for a very simple DSP crossover. I have found trigaudio and I am negotiating with them. They normally sell in MOQ 300, and I need maximum 20 (for reselling in my small DIY shop).

Are there any other alternatives. I'm not looking for a MiniDSP competitor, but just a very basic board.

 

[basreflex]

best option is a board with ADAU1701. depending on other options like power-on click supppression, wide range supply input regulation, connectors, monitoring , volume control, cost will go up. cost of real time parameter change is 80$, or off line programming using an arduino. checkout freedsp board...

 

[Kjeldsen]

ADAU1701 is MiniDSP territory, and no one can beat them in either cost or quality or support. I am looking for ultra simpel board 2 in 4 out. Eq on input and cross over on output. Pricerange = half of miniDSP.

 

[basreflex]

if the board is SMT only the cost will be tolerable. TH connectors and other TH components drive up the manufacturing costs. unless the DIY-er solders the TH components as a kit.

 

[Kjeldsen]

It's very hard to find. Maybe there is no market for DSP in the 50$ range incl software. Is the price up to MiniDSP 2 in 4 out wtih plug in not worth mentioning?

 

[basreflex]

the cost problem is in the software. Analog devices does not allow the sale of their products and freeware software and have the end-user reprogram the DSP. That's why minidsp had to develop their own software . I estimate the board material cost below $30 in quantities. you have to sell a lot of units to earn back the software development.

 

[Kjeldsen]

Om looking for a finished solution. Im not maling it

 

[basreflex]

so fixed XO freqs, and corrections ?
then you can save on the programming connector and just plug in a programmed eeprom. and do the development on an evalkit or any board like the freedsp board. what power supply do you think of ?

 

[Kjeldsen]

Again, I am not going to making anything - no programming no soldering, just a off the shelf solution.

 

[basreflex]

I could help you developing a product, but it's not clear to me what the specs should be..
check out the nanodsp thread i did

 

[Kjeldsen]

No thanks, I'm just after a well proven cheap board. They are out there, I just have to find them.

 

[Kjeldsen]

right now I'm asking some questions about this board

FREE SHIPPING DSP, processing module, car amplifier processor, modified car amplifier processor, effects processing-in Other Electronic Components from Electronic Components & Supplies on Aliexpress.com | Alibaba Group

I can't see if the RS232 interface is part of the board or not.

 

[basreflex]

interesting find ! seems to be developed by:
DA3024B|¹ãÖݾ§ÈñÐÅÏ¢¼¼ÊõÓÐÏÞ¹«Ë¾
my guess is that's a 1701 plus a micro. I see 2 crystals
could not see any control SW download at kingray, but my chinese is a bit rusty ... or non-existent

 

[Kjeldsen]

Great, Thanks for that. They also have a 6 in 6 out cross over DA3066

Google translate

USB port on the remote control or RS232 real-time control, with PC control software, beautiful interface, easy to adjust.

I just can't see the ports/pins on the PCB.

 

[basreflex]

the DA3066 seems to have an ADAU1461 as the Mclk is driven at pin 2 from the 12.288 oscillator. the rsr232 is on uart level RXD/TXD, so need a USB to rs232 RXDTXD converter, a few bucks on aliexpress. also these guys circumvent the EULA agreement by having theyr own SW control the dsp instead of using the sigmastudio.

 

[mhelin]

Another board:
Free Shipping! 1pc ADAU1701 module electronic frequency Digital Audio Processor Module-in Other Electronic Components from Electronic Components & Supplies on Aliexpress.com | Alibaba Group

 

[Kjeldsen]

have seen it, but also negative feedback and cost much more than the other board.

"No description of this module. No pin configuration. No software."

 

[mhelin]

$18 DSP module + $12 programming dongle:
2, 4, or 6 Channel In and Out DSP Module for integration into amplifiers » UBUY Industrial Inc

These UBUY modules have AKM ADC on board with better SNR.

 

[Kjeldsen]

Have seen those. But MOQ is 300, and it seems the dsp is sold with amplifiers but I am not sure. I will try to inquire

 

[mhelin]

Then how about XMOS Startkit + Audio Slice:

XK-STK-A8DEV XMOS | 880-1066-ND | DigiKey
XA-SK-AUDIO XMOS | 880-1043-ND | DigiKey

There is no software ready software available yet, just XMOS example code and free development tools.