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GZ34 (GZ34)

Jacob Roschy Martin Renz Ernst Erb Bernhard Nagel Dietmar Rudolph † 6.1.22 Eilert Menke 
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Forum » Valves / tubes - Semiconductors » VALVES/TUBES / SEMICONDUCTORS in RADIOMUSEUM » GZ34 (GZ34)
Alfred Zeeb
Alfred Zeeb
CDN  Articles: 43
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Pict.: 164
24.Jul.09 17:09

Count of Thanks: 56
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The "Assembly Instructions" for the Dynaco Dynakit Stereo 70 list on page 10 tubes 5U4G and 5U4GB as suitable replacement for the GZ34 

Roy Johnson
GB  Articles: 284
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24.Jul.09 20:40

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Thank you Alfred,

One must be careful in considering replacement tubes.

In particular tye GZ34 has a lower heater current than many others of a similar HT rating.  It may be OK for that amplifier but not for all!

The attached pdf gives a brief overview, but other factors such as series resistance and capacitor loading must also be considered.


Best regards,Roy