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Audio and Video Talk
The Vintage Audio Section
Quad 33/303 Experts.
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<blockquote data-quote="fdlsys" data-source="post: 571792" data-attributes="member: 2310"><p>They were designed (as a stop-gap, more-less) to drive the ESL 57s without either destroying the other.</p><p></p><p>In 57s, they drive a wide-band audio transformer directly and don't care much what happens after it.</p><p></p><p>In ribbons, they need to drive an electro-magnetic transducer (through a passive crossover I presume - I don't know the Apogees)</p><p></p><p>The only similarity is that both look like large(ish) panels and produce the sound by moving large membrane(s).</p><p></p><p>If I were you, I would try it as-is (stereo) at moderate SPL to get an idea if it will work at all with (presumably high) Apogee current demand.</p></blockquote><p></p>
[QUOTE="fdlsys, post: 571792, member: 2310"] They were designed (as a stop-gap, more-less) to drive the ESL 57s without either destroying the other. In 57s, they drive a wide-band audio transformer directly and don't care much what happens after it. In ribbons, they need to drive an electro-magnetic transducer (through a passive crossover I presume - I don't know the Apogees) The only similarity is that both look like large(ish) panels and produce the sound by moving large membrane(s). If I were you, I would try it as-is (stereo) at moderate SPL to get an idea if it will work at all with (presumably high) Apogee current demand. [/QUOTE]
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Audio and Video Talk
The Vintage Audio Section
Quad 33/303 Experts.
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