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Maya R2R Advanced Volume controller
Maya R2R Advanced Volume controller
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Old 15th April 2019, 07:09 AM   #431
tvicol is offline tvicol  Europe
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Maya R2R Advanced Volume controller Maya R2R Advanced Volume controller
SE -> BAL schematic

Reference DAC Module - Discrete R-2R Sign Magnitude 24 bit 384 Khz

Regards,
Tibi
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Old 24th April 2019, 09:29 PM   #432
Dudeisms is offline Dudeisms  United States
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Need some help. I have a second relay board to make the Maya balanced, but I don't understand how to connect it to the original maya that I have. Please help.

Also what size standoffs do I need, and what other stuff will I need to connect this 2nd board?
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Old 25th April 2019, 06:25 AM   #433
tvicol is offline tvicol  Europe
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Maya R2R Advanced Volume controller Maya R2R Advanced Volume controller
Hi,

Hope attached pictures are self explanatory.

Regards,
Tibi
Attached Images
File Type: jpeg maya1.jpeg (188.1 KB, 284 views)
File Type: jpeg Maya2.jpeg (204.5 KB, 285 views)
File Type: jpeg Maya3.jpeg (251.9 KB, 268 views)
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Old 26th April 2019, 12:42 PM   #434
PieterPiet is offline PieterPiet  Netherlands
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Hi Tibi, can I ask you 3 small questions?

1) is a 6 Vac 15VA transformer sufficient to power your latest balanced Maya? Or do I need at least 9V 20VA?

2) I am looking to change your encoder for another one (see below) with an integrated NO switch (to use for the menu button). But I see two capacitors c20 and c21 on your encoder PCB, 47 nF between common and the two channels. I need new caps with a new encoder-with-switch, what type of 47 nF capacitors do I need?

3) My guess is that this encoder-with-switch suits Maya, am I right? Bourns 652-PEC11R4225KS0024
PEC11R-4225K-S0024 Bourns | Mouser Nederland

Last edited by PieterPiet; 26th April 2019 at 12:55 PM.
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Old 27th April 2019, 10:32 AM   #435
tvicol is offline tvicol  Europe
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Maya R2R Advanced Volume controller Maya R2R Advanced Volume controller
Hi Pieter,


1) maya regulator 7805 need 3V drop for proper regulation. At 6 Vac you get ~7,2Vdc after rectification which is quite low.
I suggest you to use 9Vac or replace 7805 with a LDO regulator.


2) This is a direct replacement. No capacitors needed.

PEC16-4220F-S002


PEC16-4220F-S0024 BOURNS - Codor: incremental | TME - Componente electronice


3) No.


Regards,
Tibi

Last edited by tvicol; 27th April 2019 at 10:34 AM.
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Old 27th April 2019, 12:06 PM   #436
PieterPiet is offline PieterPiet  Netherlands
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Tibi, Thank you for the answers !
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Old 12th May 2019, 03:53 PM   #437
tjencks is offline tjencks  United States
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Tibi and others, since Vicol Audio page is no longer available can someone send me or provide me access to the docs for Maya Controller and VolCB that was on Vicol audio site.

I'm not sure if I have the latest firmware either but I suspect I'm fine there as I got my unit August 2018.

Just need the docs to ensure I understand everything completely. Am looking to power the Maya main unit from my own DC supply ... need suggestion on best place to connect this supply after the 7805 regulator.
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Old 12th May 2019, 04:13 PM   #438
tvicol is offline tvicol  Europe
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Maya R2R Advanced Volume controller Maya R2R Advanced Volume controller
Please mail me for documentation.

Regards,
Tibi
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Old 23rd June 2019, 10:52 AM   #439
havefun is offline havefun
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Why is the website not working?
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Old 23rd June 2019, 01:31 PM   #440
danzup is offline danzup  Romania
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Quote:
Originally Posted by havefun View Post
Why is the website not working?
Vicol Audio have close business. For archive please see :
danzup personal site
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There are not better tube than 6P3S and 6N2P for my ears !
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