Muses Volume

[Vavilen]

3. I prefer 3 secondaries. 2 >=15Vac for the analog / muses circuit and 1 ~8Vac for the control and relay circuit.

Hi Daniel,
will this Toroidal Transformer 30VA 2x15V + 1x9V also be ok?

 

[meldano]

Shure

 

[9pixel]

Hello Daniel,
how can I buy the pcb's and controller?
Best regards
Alex

 

[meldano]

Hi Alex,
from me 😉
What exactly do you need?
Balanced, unbalanced, with r without input selector (mainboard)?

Daniel

 

[9pixel]

Hi Daniel,

I need the unbalanced main pcb with input selector for MUSES72320 and controller pcb with controller
Alex

 

[9pixel]

Hello everyone.

Wich output impedance has MUSES72320? Do I need an output buffer for connect it to a headphone amplifier with input impedance 2 KOhm and less or a power amplifier with Rin=6.8K?

Alex

 

[Deenoo]

Wich output impedance has MUSES72320? Do I need an output buffer for connect it to a headphone amplifier with input impedance 2 KOhm and less or a power amplifier with Rin=6.8K?

Yes, the output buffer is recommended

 

[9pixel]

@Deenoo
Thank you )

 

[Deenoo]

Yes, the output buffer is recommended

a plain buffer with opa1656 is just fine. I use it myself 🙂

 

[9pixel]

@Deenoo
Thank you 🙂 Do you have a circuit diagram with elements for it?

 

[Itsmee]

You can't beat an Ishikawa buffer for quality or simplicity - see Nelson Pass B1 rev 2

 

[9pixel]

@Itsmee Thank you very much for the tipp 🙂

 

[jpk73]

Hi, I am interested in your muses board and PM'd you!

 

[bacaro]

Hi @meldano

I'm interested also in main board, control and volume attenuator. But before that I'm building a tube amp which already has pre-amp embedded.
Would those boards allow me to handle remotely: volume control, on-off, source selector and does this set comes with loudness filter or some version of that?

Regards,
Lucas

 

[meldano]

Hi Lucas,
please check the documentation (Post #1).
Volume Control and Source selection via remote is implemented.
Loudness pr other signal transformation not.

Daniel

 

[bacaro]

@meldano thanks for the quick response. Looking for a remote solution, which takes advantage of MUSES72320 and perhaps this kit is almost a perfect fit for 3 of my tube amps. Would it be possible to take advantage of STM32G031K8T not connected outputs to control separate boards e.g. one that handles on-off? or it doesn't make sense due to high power consumption on amp standby and I need a totally separate circuit with separate ir receiver?

 

[meldano]

There is currently no PCB connection, ir code teaching routine etc.
I think it is too much work for a special function wich is used from one person 🙁

 

[meldano]

I have developed a web interface for my big preamplifier.
The web interface runs on a Raspberry Pi Zero.
The Pi is electrically isolated from the preamplifier controller.
The web interface operates bidirectionally, meaning the status updates on the web interface even when adjustments are made directly on the preamplifier using a rotary encoder or IR remote control.

Here's a sneak peek.

Is there interest in using this as a controller update for the Muses from the thread?

 

[Monk55]

Woahhhhh. Not clear how this is used. More please. Thx

 

[meldano]

Here 😎