Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

Mezmerize DCB1 Building Thread
Mezmerize DCB1 Building Thread
Mezmerize DCB1 Building Thread Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 2nd December 2019, 06:35 PM   #2121
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Mezmerize DCB1 Building Thread
A1. 2U should be enough. The base plate has enough mass to cool a MEZ without extra sinks even.

A2. They are test points right on the regulated rails. Middle one is GND. You don't want to risk interference from utility units or a motor there.

Congrats for your build up to now. You are welcome.
  Reply With Quote
Old 7th December 2019, 05:12 PM   #2122
rsaumure is online now rsaumure  United States
diyAudio Member
 
Join Date: Jan 2017
Location: Northeast PA
Unfortunately I started this project about a year ago. Going back over everything I noticed the 220K, 220R and 1M resistors are supposed to be super quality parts. You will notice in the pictures that I have Vishay Dale resistors. Will these be ok or should I swap them out for something else?

Still learning but learning enough to know to ask the question.

Thanks!
Attached Images
File Type: jpg IMG_2143.jpg (821.6 KB, 122 views)
  Reply With Quote
Old 7th December 2019, 05:56 PM   #2123
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Mezmerize DCB1 Building Thread
The CMF are very good parts. Not average. Use a very good pot.
  Reply With Quote
Old 7th December 2019, 07:18 PM   #2124
rsaumure is online now rsaumure  United States
diyAudio Member
 
Join Date: Jan 2017
Location: Northeast PA
Salas - Thank you.

I am planning on using the Alps 20k motorized pot. Good enough? Is there something you would recommend instead?

Hopefully will get to test sometime over the weekend!

Best regards.
  Reply With Quote
Old 7th December 2019, 11:08 PM   #2125
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Mezmerize DCB1 Building Thread
Good. Better is TKD.

TKD 2CP-2511 MC Motorized volume control | Hifi Collective
  Reply With Quote
Old 8th December 2019, 06:33 AM   #2126
rsaumure is online now rsaumure  United States
diyAudio Member
 
Join Date: Jan 2017
Location: Northeast PA
Salas

Thanks for the heads up. Been reading about the Tkd. Definitely sounds like a couple of steps above the alps. If I use the 20k then no need to change any resistor values etc?

If I a going to do this - and I am - I want to get it right!
  Reply With Quote
Old 8th December 2019, 06:34 AM   #2127
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Mezmerize DCB1 Building Thread
No need to change any resistor values.
  Reply With Quote
Old 8th December 2019, 05:53 PM   #2128
rsaumure is online now rsaumure  United States
diyAudio Member
 
Join Date: Jan 2017
Location: Northeast PA
Quote:
Originally Posted by Salas View Post
No need to change any resistor values.
Salas,

Thank you. I appreciate the input. Once I got started building I find that I am enjoying it immensely and getting to learn a little about something new.

At the same time I want to extract every ounce of performance out of these efforts and researching different components at least starts to give me some insight as to why one component is better than another.

Regards,
  Reply With Quote
Old 9th December 2019, 05:28 PM   #2129
rsaumure is online now rsaumure  United States
diyAudio Member
 
Join Date: Jan 2017
Location: Northeast PA
Quote:
Originally Posted by Salas View Post
A1. 2U should be enough. The base plate has enough mass to cool a MEZ without extra sinks even.

A2. They are test points right on the regulated rails. Middle one is GND. You don't want to risk interference from utility units or a motor there.

Congrats for your build up to now. You are welcome.
So what are the best options for additional power requirements within the same chassis to power a motorized volume control, latching relays etc? It seems to me that any kind of the little ebay power supplies would be far too noisy to put in the same chassis. Am I just better off getting another Mez board and using the power supply section of that with a smaller transformer? I looked at the super regulator and linear audio silent switcher on the diyaudio store and those do not accept mains voltage.

Thank you
  Reply With Quote
Old 9th December 2019, 05:46 PM   #2130
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Mezmerize DCB1 Building Thread
A pot motor's PSU/driver is not critical as long as it won't have a microcontroller that stays on all the time. Same for any IR remote and/or display circuitry PSU. Just give them their own transformer and don't associate them with Mez's signal ground if possible.

Mezmerize's input selection relays are already powered by an onboard LM7812.
  Reply With Quote

Reply


Mezmerize DCB1 Building ThreadHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS : F3 PCB + PSU - Hypnotize - Mezmerize - LightSpeed korben69 Swap Meet 16 21st June 2013 07:52 AM
WTB Mezmerize PCB 3GGG Swap Meet 3 16th January 2011 10:15 AM
My XXLS Subwoofer building thread... harrisni Subwoofers 9 28th October 2007 09:21 PM
Fave song from SOAD 'Mezmerize'? PeteMcK Music 6 8th March 2006 04:12 AM
Gainclone building thread based on BrianGT's boards meat Chip Amps 752 8th August 2004 07:25 AM


New To Site? Need Help?

All times are GMT. The time now is 11:50 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki