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Title: 3-500z Modulator Grid drive transformers Post by: Opcom on March 31, 2020, 02:32:32 AM not mine. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
as we know the 3-500Z needs 25W peak drive for full class B audio ratings. Also, its very low driving impedance renders the usual driver transformers (like for 833s) very inefficient, almost unusable. Driver iron is not abundant for 3-500Z at all. Here are Triad 30 Watt units.. 500 Ohms CT to 32/16/8/4/2 Ohms. 40Hz-15KHz. Easily driven by solid state amps, or a tube one. $20 each. This kind of deal may never come around again. Closest thing is a new Edcor for $50-100. I been through all of this, so.. https://www.diyaudio.com/forums/swap-meet/351627-low-pass-xover-transformer-plugs-dac.html pictures and data sheet - the audio guy has no use for them. |