Mezmerize DCB1 Building Thread - Page 59 - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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 28th June 2012, 03:36 PM   #581
diyAudio Member
 
Join Date: Feb 2012
Location: Stad Gemeente Batavia
okay i noted that for hot rodded.

one more thing, about the alps blue 2x100K pots
how about if i parallel with 100K dale resistors, that will give 50K in result.

like this:
normal 2x100K alps blue
Click the image to open in full size.

paralleling with dale 100K
Click the image to open in full size.

result
Click the image to open in full size.

what do you think?

ps. i am a very beginner, please advice if anything goes wrong.
  Reply With Quote
Old 28th June 2012, 05:12 PM   #582
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
is that 100K pot log or lin ?

if it's lin , read this : ESP - A Better Volume Control
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 11th July 2012, 11:33 PM   #583
Renron is offline Renron  United States
diyAudio Member
 
Renron's Avatar
 
Join Date: Jan 2007
Location: Sacramento
Default A little help if you please

I purchased the Mesmerize board from DiyAudio store.

This board seems to have different main filtering cap size requirements than most of the "Blue" boards which are posted in this thread. ( I didn't see that before ordering) I'm referring to the 4700uF rated ones.
The BOM says Min. 35V, 22mm wide, with 10mm lead spacing.
This board requires ~20mm (Max?) measures 18mm wide and 7.5 lead spacing.

I'm having difficulties finding a high quality cap in the recommended value that fits this size format.
I'm sure others have run into this issue as well. Any suggestions would be greatly appreciated.
Would it be OK to just solder a couple of short legs on a snap in cap?
Heck, I'd even be OK with soldering them on the underside of the board. (may be my only choice)

The Hypno. has 4 caps the Mez has 2 caps. Is there any advantage to increasing the capacity from 4700uF to say 6800uf?

Thanks for the help.
Ron
__________________
"If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3
"I fired up the prototype. Literally." The Prophet Pass.
  Reply With Quote
Old 11th July 2012, 11:40 PM   #584
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
The DIYA MEZ used the same gerber as the original Mez (mkII blue). If you got some good caps you wanna utilize be creative with their fit by all means. But use some elastic goo to bond them bases to PCB. If you gonna run it at high current, 6800uF is OK.
  Reply With Quote
Old 11th July 2012, 11:50 PM   #585
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
P.S. I went and got the BOM from DIY store just now for a check. I clipped the footnote.
Attached Images
File Type: png Snap 2012-07-12 at 01.48.38.png (12.9 KB, 375 views)
  Reply With Quote
Old 12th July 2012, 12:40 AM   #586
Renron is offline Renron  United States
diyAudio Member
 
Renron's Avatar
 
Join Date: Jan 2007
Location: Sacramento
Salas,
Thank you for the uber quick reply,
I must be confused, but I am learning.
I was reading the same BOM, near the top on the right hand column it says:
"Your Choice - Spacing 10mm" on the Capacitor row 4700uF.
I was also looking at a different board online which has 2 rings at the capacitor location. Hypnotize boards are different in this regard? My mistake.

However I DID find a "New" cap offered from Mouser, it is from Nichicon, the KA series. Here is what the press release says.

"NICHICON CORPORATION has developed the “KA Series” miniature aluminum electrolytic capacitor, which is intended to be used mainly for audio devices. It will be our highest-grade product ever achieving higher quality sound in audio devices than our standard 105C-resistant “KT Series.”

link: http://www.mouser.com/ProductDetail/...252b1rwHKyg%3d

Would this be an acceptable choice for this location? Or is it just marketing BS?

Ron
Attached Images
File Type: jpg Hypnotize cap location.jpg (47.1 KB, 372 views)
__________________
"If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3
"I fired up the prototype. Literally." The Prophet Pass.

Last edited by Renron; 12th July 2012 at 12:42 AM. Reason: added link
  Reply With Quote
Old 12th July 2012, 12:52 AM   #587
diyAudio Member
 
KatieandDad's Avatar
 
Join Date: Nov 2011
Location: UK
If it is a Log B pot you don't have to worry too much about its value. The B1 is a buffer and will match it to whatever you wish to drive.

OK a 250M pot may not suit but 10K, 47K, 100K won't pose a problem.
  Reply With Quote
Old 12th July 2012, 01:09 AM   #588
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Quote:
Originally Posted by Renron View Post
Salas,
Thank you for the uber quick reply,
I must be confused, but I am learning.
I was reading the same BOM, near the top on the right hand column it says:
"Your Choice - Spacing 10mm" on the Capacitor row 4700uF.
I was also looking at a different board online which has 2 rings at the capacitor location. Hypnotize boards are different in this regard? My mistake.

However I DID find a "New" cap offered from Mouser, it is from Nichicon, the KA series. Here is what the press release says.

"NICHICON CORPORATION has developed the “KA Series” miniature aluminum electrolytic capacitor, which is intended to be used mainly for audio devices. It will be our highest-grade product ever achieving higher quality sound in audio devices than our standard 105C-resistant “KT Series.”

link: UKA1V472MHD Nichicon | Mouser

Would this be an acceptable choice for this location? Or is it just marketing BS?

Ron
Hypnotize are different in PCB details indeed. Because geared up for even heavy hot rod, their filter caps are 4, can be fatter & snap in (2 pitches served), their CCS resistors positions are roomier.

Yummy that new cap. I would taste it if in your shoes. Nichicon has a line of such marketing caps that users seem to like, so it could be a decent good cap at the very least. See also FG series.
  Reply With Quote
Old 12th July 2012, 01:12 AM   #589
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Quote:
Originally Posted by KatieandDad View Post
If it is a Log B pot you don't have to worry too much about its value. The B1 is a buffer and will match it to whatever you wish to drive.

OK a 250M pot may not suit but 10K, 47K, 100K won't pose a problem.
It won't be a problem indeed, but I don't recommend more than 25K for best rise time in this buffer though.
  Reply With Quote
Old 12th July 2012, 01:24 AM   #590
Renron is offline Renron  United States
diyAudio Member
 
Renron's Avatar
 
Join Date: Jan 2007
Location: Sacramento
Quote:
Originally Posted by Salas View Post
Yummy that new cap. I would taste it if in your shoes. Nichicon has a line of such marketing caps that users seem to like, so it could be a decent good cap at the very least.
Sounds good! Looks delicious! And Fat free too!
"I'll by that for a dollar". well more like 5 each, I'll let you know how they work out!
Thank you for letting your humor show.

Ron
__________________
"If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3
"I fired up the prototype. Literally." The Prophet Pass.
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


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 04:47 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2