Question for EU diyaudio members - 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 19th June 2012, 03:58 PM   #1
diyAudio Member
 
Join Date: Jun 2012
Default Question for EU diyaudio members

I am in a preliminary phase and considering to release a DIY kit series with tubes.

The kits will be shipped to EU countries.
Pre-drilled aluminum chassis, toroidal power transformer, quality input/output connectors.

First kits to be released will be a valve pre-amp and buffer and a Push-Pull power amplifier utilising 2 EL34's per channel. These will be new designs, not clones of classic products.

The pricing would be competitive, not down to Chinese prices of course.

I would like to hear your views and opinions. Thanks for your time.
  Reply With Quote
Old 19th June 2012, 04:20 PM   #2
DF96 is offline DF96  England
diyAudio Member
 
Join Date: May 2007
Two things:
1. use metric bolts (M3, M4 etc.) so we can get spares
2. remember that '230V' means 240V in most of the UK and 220V in most of the mainland.
  Reply With Quote
Old 19th June 2012, 04:44 PM   #3
Jaap is offline Jaap  Netherlands
diyAudio Member
 
Jaap's Avatar
 
Join Date: Dec 2002
Location: Netherlands
EU needs pre-drilled chassis for tube amps
  Reply With Quote
Old 19th June 2012, 04:54 PM   #4
diyAudio Member
 
Join Date: Aug 2010
Location: Near Eindhoven, the sanctum of the pentode. and among that other things.
Send a message via Skype™ to v4lve lover
make mains adjustable in steps of 20v 200-220-240 don't include a thermal fuse that renders the transformer inoperable . its DIY after all

Fuse the HT CT and maybye design a PCB for the mains wiring its likely safer that way .
chassis power cord fuse and HF suppression on a little PCB that has jumpers for the correct mains voltage

use some good sockets not chinese those ruin valve pins use NOS /nice fitting stuf
hum pot would be nice


v4lve
  Reply With Quote
Old 19th June 2012, 05:09 PM   #5
diyAudio Member
 
Join Date: Jun 2012
Quote:
Originally Posted by DF96 View Post
Two things:
1. use metric bolts (M3, M4 etc.) so we can get spares
2. remember that '230V' means 240V in most of the UK and 220V in most of the mainland.

1. All screws and bolts will be metric
2. My little research states that UK and Cyprus is 240 V and mainland Europe is 230 V, except Russia/ Lithuania /Ukraine which are 220 V.
So I believe that a heater regulator is the solution (for the preamp)

Thanks!
  Reply With Quote
Old 19th June 2012, 06:00 PM   #6
ElEsido is offline ElEsido  Switzerland
diyAudio Member
 
Join Date: Jun 2011
Make it a true European Amp and have the chassis and PCB made in Europe, not China, and use European parts where possible.
  Reply With Quote
Old 19th June 2012, 06:09 PM   #7
diyAudio Member
 
artosalo's Avatar
 
Join Date: Feb 2010
Consumer electronics products like tube amlifiers including kits should comply with european Low Voltage Directive and EMC Directive.
This must be indicated with CE-marking on the product and documents.
  Reply With Quote
Old 19th June 2012, 06:17 PM   #8
diyAudio Member
 
Join Date: Oct 2011
Location: Tauberbischofsheim, Germany
A suggestion for the power xformer's primaries: Provide windings for 110 V and 10 V, two of each. Thus the tranny can be hooked up for 110 V, 120 V, 130 V, 220 V, 230 V and 240 V and saves winding space

Best regards!
  Reply With Quote
Old 19th June 2012, 06:29 PM   #9
DF96 is offline DF96  England
diyAudio Member
 
Join Date: May 2007
Give the spec in Eu/US watts and not Chinese watts.
  Reply With Quote
Old 19th June 2012, 08:09 PM   #10
diyAudio Member
 
Join Date: Oct 2011
Location: Tauberbischofsheim, Germany
Quote:
Originally Posted by DF96 View Post
Give the spec in Eu/US watts and not Chinese watts.
You mean PMPO watts, which, according to Morgan Jones, means Purely Mythical Power Output?

Best regards!
  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
Question for EU members ValveKit Vendor's Bazaar 0 19th June 2012 03:40 PM
To all Indian diyaudio members jacobsetti Solid State 0 21st February 2012 01:07 PM
DIYAUDIO.COM Stickers For Members! jleaman Everything Else 13 15th June 2011 05:58 AM
How many diyaudio members are from Malaysia? Leolabs Everything Else 0 23rd July 2006 03:55 AM
Hello diyAudio members! Brian Guralnick Introductions 2 12th March 2002 07:04 AM


New To Site? Need Help?

All times are GMT. The time now is 05:53 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