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 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

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PostPosted: 26 Nov 2008, 21:29 
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Announcements and site updates regarding Testing Equipment and Tools will be made in this thread.

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PostPosted: 19 Nov 2009, 23:56 
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Bruce has put together a handy Prototyping Board for single stage tube amplifier circuits.

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See the DIY Vacuum Tube (Valve) Prototyping Board post for full details.

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PostPosted: 11 Jul 2011, 21:19 
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If you ever have had the need to make accurate low resistance (< 10 ohm) measurements, you likely know that your typical multimeter is not very accuate. Here is the method I use: Simple Low Resistance Measurement.

I hope some of you find it useful.

Cheers


UPDATE - Added 4-Wire (Kelvin) Resistance Measurement - Video Tutorial to the Simple Low Resistance Measurement test jig page.


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 Post subject: EICO 667 Tube Tester
PostPosted: 29 May 2012, 20:07 
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Les has put together an informative page about the EICO 667 Tube and Transistor Tester. The instructions manual and tube roll chart data are available for download on the page. There is also a EICO 666 and 667 Tube Testers - helpful tips thread with more information.

Thanks for sharing Les.

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PostPosted: 09 May 2014, 10:04 
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Some notes and photos of the Dayton Audio Test System (DATS). This is the replacement for the Dayton Woofer Tester 3 (WT3). The DATS is simple to use and accurate.

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Link - Dayton Audio Test System (DATS)

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PostPosted: 22 Nov 2014, 14:47 
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Some notes and the instructions manual for the EICO 628 Tube Tester.

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Link - http://diyaudioprojects.com/Testeq/EICO-628-Tube-Tester/

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 Post subject: Dummy Speaker Load Box
PostPosted: 07 Mar 2015, 14:49 
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Matt shares with us his build of a fantastic looking dummy speaker load box. The dummy speaker load box is reconfigurable to 2-ohm, 4-ohms, 6-ohm, 8-ohm, 16-ohm and 32-ohm loads. TMC050 wire wound power resistors from Vishay mounted to heatsinks to increase power dissipation are used for the load. The speaker load box is simple to build and will look great on the workbench.

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Link - http://diyaudioprojects.com/Testeq/Dummy-Speaker-Load/

This project supersedes Gio's very simple DIY Speaker Dummy Load for Amplifier Testing built from salvaged parts.


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