DIY Audio Projects Forum
 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

DIY Audio Projects Forum

Welcome to the DIY Audio Projects Message Forum. Use these forums to discuss Hi-Fi audio and to share your DIY Audio Projects. Registration is free and required to post messages and view the file attachments. Registration will only take a minute and registered users do not see any advertisements. After you have completed the online registration process, check your email (including spam/junk folder) for the verification email to activate your account. New members are under moderation - so your posts will not be visible until approved by a moderator. See the Read Me 1st, Forum RULES and Forum FAQ to get started on the forum.

It is currently 22 Feb 2018, 11:43

All times are UTC - 6 hours [ DST ]




Post new topic Reply to topic  [ 231 posts ]  Go to page Previous  1 ... 18, 19, 20, 21, 22, 23, 24  Next
Author Message
PostPosted: 07 Mar 2014, 17:39 
Offline
Project Author
User avatar

Joined: 06 Jun 2008, 18:23
Posts: 4834
Location: Australia
The cct. brd comes with lots of storage caps I'm not sure I would bother with any more. This is a low current device and the caps are a good size.

_________________
Projects: "Sanctum" - 12AU7 and 6AS7 direct coupled headphone amp | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "Mimic Carbon" - carbon resistors and PIO caps. MM phono preamp
Website: retro-thermionic


Top
 Profile  
 
PostPosted: 07 Mar 2014, 18:10 
Offline
Editor
User avatar

Joined: 28 May 2008, 21:53
Posts: 4530
Location: Winnipeg, CANADA
For sure. Especially with a battery power supply there is no need for additional filter caps.

Cheers

_________________
[ DIY Mains AC Power Cable Cord ] - [ Gobo LM1875 Amp Kit ] - [ Tang Band D4-1 Horn Speaker Kit ] - [ Monoblock Push-Pull KT88 Tube Amp Kit ]


Top
 Profile  
 
PostPosted: 07 Mar 2014, 18:34 
Offline
Project Author
User avatar

Joined: 06 Jun 2008, 18:23
Posts: 4834
Location: Australia
Also the designer does some nice things (best I can describe it) with the B+ rail. He uses some resistors to split the B+ rail to semi-isolate the front of the amp from the back. Then adds storage caps at both end. I like the idea and so simple.

_________________
Projects: "Sanctum" - 12AU7 and 6AS7 direct coupled headphone amp | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "Mimic Carbon" - carbon resistors and PIO caps. MM phono preamp
Website: retro-thermionic


Top
 Profile  
 
PostPosted: 08 Mar 2014, 17:36 
Offline

Joined: 26 Feb 2014, 14:38
Posts: 5
Thanks for the replies.
I have completed as I told before the pcb, last week.
Hopefully tomorrow complete the box :-)

Image
Image
Image
Image


Top
 Profile  
 
PostPosted: 08 Mar 2014, 20:20 
Offline
Project Author
User avatar

Joined: 06 Jun 2008, 18:23
Posts: 4834
Location: Australia
Looks good.

_________________
Projects: "Sanctum" - 12AU7 and 6AS7 direct coupled headphone amp | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "Mimic Carbon" - carbon resistors and PIO caps. MM phono preamp
Website: retro-thermionic


Top
 Profile  
 
PostPosted: 09 Mar 2014, 15:27 
Offline

Joined: 26 Feb 2014, 14:38
Posts: 5
Today I finally completed the box . Could not control as I am waiting the charger from ebay supplier. it is on the way hopefully till mid week I will have it.
Image
Image
Image
Image
Image
Image


Top
 Profile  
 
PostPosted: 09 Mar 2014, 17:00 
Offline
Project Author
User avatar

Joined: 06 Jun 2008, 18:23
Posts: 4834
Location: Australia
Good layout keeping the leads from RCAs short and good to see no shielded wire.

_________________
Projects: "Sanctum" - 12AU7 and 6AS7 direct coupled headphone amp | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "Mimic Carbon" - carbon resistors and PIO caps. MM phono preamp
Website: retro-thermionic


Top
 Profile  
 
PostPosted: 10 Mar 2014, 14:25 
Offline

Joined: 26 Feb 2014, 14:38
Posts: 5
Thanks mwhouston
My friend warned me that the batteries should have some current and should work till down below 16 v. So I checked and it worked. Last 2 hours I am listening. Every minute the performance increases , better to tell my opinions what Pacific Pre did in my system, after at least 30-50 hours.


Top
 Profile  
 
PostPosted: 11 Mar 2014, 08:24 
Offline
User avatar

Joined: 14 Feb 2010, 13:13
Posts: 663
Location: Lisbon, Portugal
I would use a fuse for some short-circuit protection...


Top
 Profile  
 
PostPosted: 12 Mar 2014, 06:57 
Offline

Joined: 26 Feb 2014, 14:38
Posts: 5
HT Performance wrote:
I would use a fuse for some short-circuit protection...


even it is driven by battery pack, do you think I should add fuse in between battery and PCB.
or you suggest to add fuse between the charging point and battery pack.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 231 posts ]  Go to page Previous  1 ... 18, 19, 20, 21, 22, 23, 24  Next

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
DIY Tube Projects :: DIY Tube Amp Kits :: DIY Speaker Projects :: DIY Solid State Projects :: DIY IC / Op-amp Projects :: DIY Phono Projects :: DIY Cable Projects :: Hi-Fi Audio Schematics
© diyAudioProjects.com - Terms of Service - Privacy Policy