Analog Crossover Network with volume and input selector

[Lukyk]

While searching for best crossover solution for my planned WAW build
I found Nelson Pass's crossover board in store, which seems to be perfect candidate for this task. (I also didn't resisted and ordered F6 board).

I don't think I need more gain with my sources (DAC and valve phono), so idea is to build just the crossover with volume control and input selector.

For volume and input control I'm about to order arduino controlled relay based pcb's from amb. They should stay out of signal path and will have separated power supply.

Do I understand correctly, that no additional buffer (or pre) is needed for my use-case?

Is it good idea to mix this in one enclosure with separated power supply?

And is there any recommended internal power supply for ACN which can be located in chassis?

 

[Lukyk]

I know, that I'm probably asking noobish questions, but no one will point me to the right direction?

 

[Zen Mod]

chime in xover thread and ask your question there

though , adding selector and volume pot in front of practically anything is trivial thing .. in this case especially , where I believe Papa's xover is having input buffer(s) , so no need for additional one after volume pot

I could answer more precisely , if you put a link to exact Papaxover , you have on mind ..... several of them around lately ......

 

[Lukyk]

Thanks Zen Mod, for your reply. I'm talking about LXmini ACN from the shop. I thought it will be better to have separated topic, but next time I'll ask there.

As for the power supply. Is there any recommended pcb way with at least the same performance as wall-plug version suggested in the article?

 

[Zen Mod]

pcb - anything based on , say, LM317 and set to 24Vdc will work

 

[Lukyk]

Thanks for clarification. I'm glad, that regulator quality is not critical for this build.

 

[R-K Rønningstad]

I decided LM317 is good enough and found a commercial offering, Velleman. Rectifier, caps and LM317. I collected the regulator board, the B-1 board and the transformer inside an alu chassis. Cheap and easy.

 

[Lukyk]

Thanks for the tip R-K Rønningstad. It's very simple, reasonably priced and easy to get in EU. Will probably give it a try.

 

[cubicincher]

PASSWORKS AXO - seperated supply

Hello LUKYK,
I have built the PASSWORKS AXO with a simple 7824 regulator supply in a seperated case. I was also thinking about the LM317 to make the Voltage adjustable. I put the AXO in the MODUSHOP case and the PSU in a seperated case. I can send you some pics later.

You know - Christmas: family first

Greets Dirk

 

[Lukyk]

Hi Dirk,

thank you for your input. I also plan to use modushop case.

I hope, that powersupply in the same case won't cause problems. I have dual regulator psu in the same case with my valve phono and it's working decently.

And of course, family first at these times;-)

 

[cubicincher]

PASSWORKS AXO custom - PSU

Hello LUKYK,

I did the AXO with the official MODUSHOP - case and a seperated PSU. But I think there will be no problem to put it into one single case. Perhaps divide the inner of the case into two areas? Shielding the AXO - board from the PSU wouldn't be bad?

I add a pic.

Greets Dirk

 

[Lukyk]

Hi Dirk,

Internal separation of case is definitely thing to consider. When unsatisfied, I can opt out for separated power supply later.

You have very nice and clean build, good work!