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 24 Jul 2019, 04:50

All times are UTC - 6 hours [ DST ]




Post new topic Reply to topic  [ 62 posts ]  Go to page Previous  1 ... 3, 4, 5, 6, 7  Next
Author Message
 Post subject: Re: 211 SE power amp
PostPosted: 06 Oct 2013, 21:19 
Offline
Project Author
User avatar

Joined: 06 Jun 2008, 18:23
Posts: 5115
Location: Australia
Geek wrote:
Better? *philosophical cap on* Well, NO tube is better than the other, just different..... *philosophical cap off*

I have not heard one. You tell me! :D

A friend, Dave, had some Cyber 845s monoblocks which I liked. He swapped them for Audio Space quad 300B pull-pull monoblocks. Both very good amps hard to pick a winner. It will interesting to compare the 211s against the Audio Space.

When I took my 300B SE (Silver Dragon) around to Dave's he "hinted" it sounded better than his Audio Space.

_________________
Projects:"retro2308" - chip based headphone amp | ”Calibre 834” - tube phono MM preamp | ”najah” - Raw 180W Tripath Class D power amp | "Icon" - Shuguang CV-181Z preamp


Top
 Profile  
 
 Post subject: Re: 211 SE power amp
PostPosted: 07 Oct 2013, 06:07 
Offline
User avatar

Joined: 08 Aug 2009, 03:11
Posts: 2229
Location: Chilliwack, BC
Subjective likes.... just go for what YOUR ears like, because that's all that matters :thumbsup:

_________________
-= Gregg =-
* Ratings are for transistors - tubes have guidelines*
Home: GeeK ZonE
Work: Classic Valve Design


Top
 Profile  
 
 Post subject: Re: 211 SE power amp
PostPosted: 07 Oct 2013, 17:19 
Offline
Project Author
User avatar

Joined: 06 Jun 2008, 18:23
Posts: 5115
Location: Australia
Geek wrote:
Subjective likes.... just go for what YOUR ears like, because that's all that matters :thumbsup:

Agree. A respected speaker build near me likes the sound of SS gear and finds tube gear to floating and not bolted to the floor. I like the float effect. Different strokes for different blokes.

_________________
Projects:"retro2308" - chip based headphone amp | ”Calibre 834” - tube phono MM preamp | ”najah” - Raw 180W Tripath Class D power amp | "Icon" - Shuguang CV-181Z preamp


Top
 Profile  
 
 Post subject: Re: 211 SE power amp
PostPosted: 20 Dec 2013, 03:52 
Offline
Project Author
User avatar

Joined: 06 Jun 2008, 18:23
Posts: 5115
Location: Australia
My Edcor 211OPTs arrived. I think I ordered two pairs. I can't lift the boxes.

_________________
Projects:"retro2308" - chip based headphone amp | ”Calibre 834” - tube phono MM preamp | ”najah” - Raw 180W Tripath Class D power amp | "Icon" - Shuguang CV-181Z preamp


Top
 Profile  
 
 Post subject: Re: 211 SE power amp
PostPosted: 20 Dec 2013, 07:12 
Offline
User avatar

Joined: 08 Aug 2009, 03:11
Posts: 2229
Location: Chilliwack, BC
Oh, rockin! :thumbsup:

You'll have fun for the holidays :headphones:

_________________
-= Gregg =-
* Ratings are for transistors - tubes have guidelines*
Home: GeeK ZonE
Work: Classic Valve Design


Top
 Profile  
 
 Post subject: Re: 211 SE power amp
PostPosted: 20 Dec 2013, 07:54 
Offline
Project Author
User avatar

Joined: 06 Jun 2008, 18:23
Posts: 5115
Location: Australia
Geek wrote:
Oh, rockin! :thumbsup:

You'll have fun for the holidays :headphones:

Two big projects prior to this one.

_________________
Projects:"retro2308" - chip based headphone amp | ”Calibre 834” - tube phono MM preamp | ”najah” - Raw 180W Tripath Class D power amp | "Icon" - Shuguang CV-181Z preamp


Top
 Profile  
 
 Post subject: Re: 211 SE power amp
PostPosted: 20 Dec 2013, 08:58 
Offline
Project Author
User avatar

Joined: 06 Jun 2008, 18:23
Posts: 5115
Location: Australia
They're very big and heavy. I wonder if my OPTs for the Silver Dragon (300B) and are bigger.
Attachment:
PC212645.JPG


This post has a file attachment. Please login or register to access it. Only Registered Members may view attached files.


_________________
Projects:"retro2308" - chip based headphone amp | ”Calibre 834” - tube phono MM preamp | ”najah” - Raw 180W Tripath Class D power amp | "Icon" - Shuguang CV-181Z preamp


Top
 Profile  
 
 Post subject: Re: 211 SE power amp
PostPosted: 26 Mar 2014, 20:50 
Offline
Project Author
User avatar

Joined: 06 Jun 2008, 18:23
Posts: 5115
Location: Australia
This Audionote amp and 2-way speakers was the best I heard at the show late last year. A few others agreed, a couple being extremely impressed as I was. A huge amount of over-kill on all levels but a simple and great sound.http://www.audionote.com.au/2013_Melbourne_HiFi_Show.html

_________________
Projects:"retro2308" - chip based headphone amp | ”Calibre 834” - tube phono MM preamp | ”najah” - Raw 180W Tripath Class D power amp | "Icon" - Shuguang CV-181Z preamp


Top
 Profile  
 
 Post subject: Re: 211 SE power amp
PostPosted: 17 Jan 2019, 19:28 
Offline

Joined: 22 Feb 2017, 07:55
Posts: 21
Did anyone ever build Matt's version of the 211 amp?

Here is my version I built almost 20 years ago. It started out with a 6SL7 driver direct coupled to a 6F8G cathode follower. It was rated at about 16~17 watts RMS into an 8 ohm load.

The latest version is transformer coupled and is rated for 25 watts into an 8 ohm load with no changes except the driver circuit. I have plenty of gain, so I might try a little feedback and see what happens, but it doesn't need it.

Photos and more data later...


This post has a file attachment. Please login or register to access it. Only Registered Members may view attached files.



Last edited by THD+N on 17 Jan 2019, 21:28, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: 211 SE power amp
PostPosted: 17 Jan 2019, 19:39 
Offline
Project Author
User avatar

Joined: 06 Jun 2008, 18:23
Posts: 5115
Location: Australia
Impressive frequency response. No I never built it. I feel guilty when I ask Matt to design something and not build it. Do still intend to one day. Got all the parts.

_________________
Projects:"retro2308" - chip based headphone amp | ”Calibre 834” - tube phono MM preamp | ”najah” - Raw 180W Tripath Class D power amp | "Icon" - Shuguang CV-181Z preamp


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 62 posts ]  Go to page Previous  1 ... 3, 4, 5, 6, 7  Next

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: Exabot [Bot], poty and 9 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