DIY Dodd Buffer

TrungT · « **Reply #620 on:** 6 Dec 2010, 02:04 am »

JT
"peer pressure"
Naa ...

I'm so glad you ordered the conversion kit.

Mariusz · « **Reply #621 on:** 6 Dec 2010, 03:31 am »

Quote from: jtwrace on 6 Dec 2010, 01:53 am

I couldn't stand the peer pressure so I ordered the $150 single tube conversion kit from Dodd.

No peer pressure but my $99 DIY Teflon tube rings are still available. All you need is one.

Seems like curiosity got the best of you.

Hope you like what you hear.
If not.......it is ALL Trung

jtwrace · « **Reply #622 on:** 6 Dec 2010, 12:51 pm »

Quote from: Mariusz on 6 Dec 2010, 03:31 am

No peer pressure but my $99 DIY Teflon tube rings are still available. All you need is one.

Seems like curiosity got the best of you.

Hope you like what you hear.
If not.......it is ALL Trung

jtwrace · « **Reply #623 on:** 7 Dec 2010, 11:43 pm »

Mariusz-

Anything to tell us?

Mariusz · « **Reply #624 on:** 8 Dec 2010, 05:08 am »

A bit busy but I did some work on buffer conversion and snapped few pics.
More later......

TrungT · « **Reply #625 on:** 8 Dec 2010, 05:40 am »

Mariusz
Looking good.

Mariusz · « **Reply #626 on:** 8 Dec 2010, 07:07 am »

There is something that needs to be mentioned to those interested in using 6H30 supertube in Dodd buffer. This tube is substantially taller then any 12V or 6V tube comparable with this buffer and some changes to tube pot layout might be necessary.

And thank you Trung

(stay tuned for special announcement tomorrow regarding Special Christmas offer from Dodd Audio)

TrungT · « **Reply #627 on:** 8 Dec 2010, 07:32 am »

Mariusz
You'r welcome

What do you think about the sound of 6H30 tube?
"tube pot layout might be necessary"
Check

(stay tuned for special announcement tomorrow regarding Special Christmas offer from Dodd Audio)
Awesome

jtwrace · « **Reply #628 on:** 8 Dec 2010, 01:06 pm »

Thanks for the pics Mariusz.

Is the conversion plug n play or a lot of reworking?

Special Christmas announcement?

Mariusz · « **Reply #629 on:** 8 Dec 2010, 05:52 pm »

Quote from: jtwrace on 8 Dec 2010, 01:06 pm

Thanks for the pics Mariusz.

Is the conversion plug n play or a lot of reworking?

Special Christmas announcement?

In my case - easy.
Remove voltage regulator and install it on oversize heatsink.
Drill the opening for extra long 6h30 tube. Install tube pot and heatsink raisers.
I also had to replace the input selector switch (my fault).
Your kit might be totally different then what we have.

jtwrace · « **Reply #630 on:** 8 Dec 2010, 05:56 pm »

Quote from: Mariusz on 8 Dec 2010, 05:52 pm

In my case - easy.
Remove voltage regulator and install it on oversize heatsink.
Drill the opening for extra long 6h30 tube. Install tube pot and heatsink raisers.
I also had to replace the input selector switch (my fault).
Your kit might be totally different then what we have.

Doesn't sound bad...

I would really like to keep the 6H30 in the chassis though. Can it be done?

Mariusz · « **Reply #631 on:** 8 Dec 2010, 06:02 pm »

Only if you side mount the tube pot. Same as in Trung's buffer.

ebag4 · « **Reply #632 on:** 8 Dec 2010, 06:05 pm »

Has anyone determined the minimum size heatsink required for the voltage regualtor?

Best,
Ed

TrungT · « **Reply #633 on:** 8 Dec 2010, 06:49 pm »

Ed
I think the heat of regulator just like 7 - 10 watts light bulb.

ebag4 · « **Reply #634 on:** 8 Dec 2010, 06:56 pm »

Quote from: TrungT on 8 Dec 2010, 06:49 pm

Ed
I think the heat of regulator just like 7 - 10 watts light bulb.

Thanks Trung, that helps.

Best,
Ed

TrungT · « **Reply #635 on:** 8 Dec 2010, 07:00 pm »

^^^^
You'r welcome.

Mariusz · « **Reply #636 on:** 10 Dec 2010, 06:50 am »

Here are few shots of layout modification.
Basicly the goal here was to make the tube swap an easier affair. So the tube pot was raised and hole will be cut out in the top of the case.
Heat sink with voltage regulator was position to the side of the case and cut was made in letter "D" to gain access to the switch.

front view

side view

case cutout view

jtsnead · « **Reply #637 on:** 10 Dec 2010, 11:37 am »

If you are buying a new assembled kit for a 6H30 tube would it already be cut out, or is his just in your case?

usp1 · « **Reply #638 on:** 10 Dec 2010, 12:55 pm »

I received a Gary-assembled buffer a week ago. Later tonight I will post a pic which shows how he put it together with an extra heat sink to accommodate the 6h30 buffer. He did not have to cut out a hole for the tube. I do not have a 6h30 tube yet so I am not completely sure that there is enough space in the case but I am trusting that Gary made sure.

Mariusz · « **Reply #639 on:** 11 Dec 2010, 03:46 am »

finished-front view

side view

voltage regulator/switch view