A site about amplifiers, speakers and British vintage hifi equipment. - UK Vintage Radio Repair and Restoration Discussion Forum

leakstereo20 · 18th Mar 2015, 7:06 pm

A free amateur website for DIY people. The website is under construction.

Including assistance for repair of vintage hifi tube gear such as Leak, Michaelson & Austin, Conrad Johnson and AR speakers:

https://sites.google.com/site/httpstubeamp/

It is a free website offered by "Google Sites".

The purpose of the website is to share experiences with people who have interest in vintage hifi equipment, audio amplifiers and speakers.

The website has also been made because I have often needed help with my own projects.

David G4EBT · 18th Mar 2015, 8:29 pm

The 'Simple Tube Tester' looks an interesting project, with test set-ups for several valves of interest to audio enthusiasts. (EL34, EL84, 6SN7, ECC83 etc).

Pamphonica · 18th Mar 2015, 8:35 pm

... but be very careful - the HT supply on the "Simple Tube Tester" looks as if it's straight off the mains - no transformer! For these voltages you MUST put an isolating transformer before this circuit.

leakstereo20 · 18th Mar 2015, 9:53 pm

Sorry...I should have been more precise with my drawing. In the DK we have 230Vac as regular power supply, which goes to the transformer's primary side, and the 220Vac is coming out from the secondary side of the transformer .

I will try to correct the drawing .

18th Mar 2015, 7:06 pm	#1
leakstereo20 Retired Dormant Member Join Date: Oct 2011 Location: Herlev, Denmark Posts: 94	A site about amplifiers, speakers and British vintage hifi equipment. A free amateur website for DIY people. The website is under construction. Including assistance for repair of vintage hifi tube gear such as Leak, Michaelson & Austin, Conrad Johnson and AR speakers: https://sites.google.com/site/httpstubeamp/ It is a free website offered by "Google Sites". The purpose of the website is to share experiences with people who have interest in vintage hifi equipment, audio amplifiers and speakers. The website has also been made because I have often needed help with my own projects. Last edited by leakstereo20; 18th Mar 2015 at 7:19 pm.

18th Mar 2015, 8:29 pm	#2
David G4EBT Dekatron Join Date: Feb 2003 Location: Cottingham, East Yorkshire, UK. Posts: 5,761	Re: A site about amplifiers, speakers and British vintage hifi equipment. The 'Simple Tube Tester' looks an interesting project, with test set-ups for several valves of interest to audio enthusiasts. (EL34, EL84, 6SN7, ECC83 etc). __________________ David. BVWS Member. G-QRP Club member 1339.

18th Mar 2015, 8:35 pm	#3
Pamphonica Nonode Join Date: Mar 2008 Location: Virginia Water, Surrey, UK. Posts: 2,877	Re: A site about amplifiers, speakers and British vintage hifi equipment. ... but be very careful - the HT supply on the "Simple Tube Tester" looks as if it's straight off the mains - no transformer! For these voltages you MUST put an isolating transformer before this circuit. __________________ Jeremy, G8MLK, BVWTVM Friend, VMARS, BVWS Secretary. www.pamphonic.co.uk www.bttt.org.uk

18th Mar 2015, 9:53 pm	#4
leakstereo20 Retired Dormant Member Join Date: Oct 2011 Location: Herlev, Denmark Posts: 94	Re: A site about amplifiers, speakers and British vintage hifi equipment. Sorry...I should have been more precise with my drawing. In the DK we have 230Vac as regular power supply, which goes to the transformer's primary side, and the 220Vac is coming out from the secondary side of the transformer . I will try to correct the drawing .