Chassis layout for Stereo JE Labs 300BDX - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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 25th September 2004, 03:00 AM   #1
hpn5350 is offline hpn5350  Canada
diyAudio Member
 
Join Date: Jun 2004
Location: Winnipeg
Question Chassis layout for Stereo JE Labs 300BDX

After successfully constructing the "Morgan Jones Tube Headphone Amp", I have decided to try to build the JE Labs Stereo 300BDX. However, I am having a difficult time trying to layout the chassis. I have tried some different layouts, and would appreciate your input as to which you think would be best.
Thanks,
Matt

Click the image to open in full size.

I am not sure whether to mount the transformers on the edge of the chassis or leave an inch around the edge?

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
  Reply With Quote
Old 25th September 2004, 05:56 AM   #2
Luke is offline Luke  New Zealand
diyAudio Member
 
Join Date: Sep 2001
Location: Wellington NZ
Send a message via AIM to Luke
I like the first option with an inch free around the edge.

BTW thats nice iron, can you please tell me what make and where u got it from?
  Reply With Quote
Old 25th September 2004, 07:02 AM   #3
diyAudio Member
 
jamesjung21's Avatar
 
Join Date: Dec 2003
Location: New Zealand
Quote:
can you please tell me what make and where u got it from?
They are James Transformers, aren't they?

The power transformers are only available with 110V primary, so they are not really suitable in NZ, unless you have a large stepdown transformer.

But those OPTs look very nice.... As long as you have enough money to spend on shipping fee....
  Reply With Quote
Old 25th September 2004, 01:45 PM   #4
hpn5350 is offline hpn5350  Canada
diyAudio Member
 
Join Date: Jun 2004
Location: Winnipeg
Default Transformers

Yes, they are James transformers. I ended up buying them over ebay, as they were slightly cheaper than the Hammond transformers I could get here in Canada.

Quote:
As long as you have enough money to spend on shipping fee
It only cost $25.00USD to ship it (although it took a few weeks).
  Reply With Quote
Old 25th September 2004, 05:10 PM   #5
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
It is a bit unconventional, and you get the most advantage if you put the input & output close in the interests of minimum signal path, but if you can get the OPTs as far from the power trafo as you can, you reduce any potential for magnetic interferance

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 25th September 2004, 06:36 PM   #6
hpn5350 is offline hpn5350  Canada
diyAudio Member
 
Join Date: Jun 2004
Location: Winnipeg
Are the input tubes sensitive to the magnetic field from the power transformer? If not, I could switch the OPT and the input tubes. That would get the OPT away from the power transformer.

At the present time I am leaning towards the first picture.
  Reply With Quote
Old 25th September 2004, 11:32 PM   #7
diyAudio Member
 
jamesjung21's Avatar
 
Join Date: Dec 2003
Location: New Zealand
Quote:
It only cost $25.00USD to ship it (although it took a few weeks).
...and it costs 65 bucks to receive a pair via airmail...

The ones in eBay are more expensive than from asian audio comp. dealers...

How much did you pay for the pair? $125~160 ??

If you buy'em from a dealer in HK, they cost only about $95 or so....
  Reply With Quote
Old 26th September 2004, 12:27 AM   #8
jleaman is offline jleaman  Belgium
Banned
 
Join Date: Apr 2002
Send a message via AIM to jleaman
Default Re: Chassis layout for Stereo JE Labs 300BDX

Quote:
Originally posted by hpn5350
After successfully constructing the "Morgan Jones Tube Headphone Amp", I have decided to try to build the JE Labs Stereo 300BDX. However, I am having a difficult time trying to layout the chassis. I have tried some different layouts, and would appreciate your input as to which you think would be best.
Thanks,
Matt

Click the image to open in full size.

I am not sure whether to mount the transformers on the edge of the chassis or leave an inch around the edge?

Click the image to open in full size.


humm he likes and uses tubes.. oh but lok a iboo/powerbook adapter in the picture so he likes apple WOOTTT!!1 welcome to my club LOL



Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
  Reply With Quote
Old 26th September 2004, 02:49 AM   #9
hpn5350 is offline hpn5350  Canada
diyAudio Member
 
Join Date: Jun 2004
Location: Winnipeg
Quote:
How much did you pay for the pair? $125~160 ??
$115.00 USD

Quote:
and it costs 65 bucks to receive a pair via airmail
What's the rush? I still had to get the rest of the parts, why ship airmail?

Quote:
If you buy'em from a dealer in HK, they cost only about $95 or so....
I tried e-mailing THL audio, but they never responded. Thus, why I went with ebay.

Quote:
humm he likes and uses tubes.. oh but lok a iboo/powerbook adapter in the picture so he likes apple WOOTTT!!1 welcome to my club LOL

Ja, in the last picture you can see the Powerbook with a Sony Vaio on top of it.

Any further advice on the layout..

I think I will go with the first picture. However, I am not sure if I should mount the transformer on the very edge or an inch into the chassis?
Thanks,
Matt
  Reply With Quote
Old 26th September 2004, 04:06 AM   #10
diyAudio Member
 
Join Date: Sep 2002
Location: Memphis, TN
Hi,

Nice looking iron! IMHO You might consider putting the caps under the chassis or since you have a lot of real-estate, switch to ASC oil caps. The ASC's polish up real nice

Regards,
Danny
  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
Need help with chassis layout bluegti Chip Amps 2 21st December 2008 01:32 AM
Chassis layout help Evenharmonics Tubes / Valves 4 3rd March 2008 11:52 PM
How to View Pass Labs Layout Files Thomo Everything Else 3 23rd December 2007 10:05 AM
JE Labs 300b round 2! layout TubeHound Tubes / Valves 12 13th May 2003 08:46 AM
JE Labs 300b round 3. Chassis are Done TubeHound Tubes / Valves 17 21st December 2002 11:50 PM


New To Site? Need Help?

All times are GMT. The time now is 07:08 PM.


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