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Can non-70v amplifiers be used with 70v ceiling speakers?
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<blockquote data-quote="Craig Hauber" data-source="post: 18843" data-attributes="member: 272"><p>Re: Can non-70v amplifiers be used with 70v ceiling speakers?</p><p></p><p>I think a 650-700W at 8-ohm amp will approximately equal 70.7V and the taps on the speakers will be accurate. </p><p></p><p>If doing that then you can load the line up to considerably more "watts" than 700 as most amps at 8-ohms don't have a problem maintaining the same voltage at lower impedances.</p><p></p><p>With the costs of cheap power nowadays it's not a bad way to go -removes the need for an output transformer on the amp design making it lighter and smaller. You still have to be careful of LF though as saturated line speaker transformers and attenuators start to resemble a short-circuit.</p><p></p><p>Using a smaller amp may work but the overall output might not get high enough. If the speakers are tapped at low wattages then moving it to the higher tap might give you enough.</p></blockquote><p></p>
[QUOTE="Craig Hauber, post: 18843, member: 272"] Re: Can non-70v amplifiers be used with 70v ceiling speakers? I think a 650-700W at 8-ohm amp will approximately equal 70.7V and the taps on the speakers will be accurate. If doing that then you can load the line up to considerably more "watts" than 700 as most amps at 8-ohms don't have a problem maintaining the same voltage at lower impedances. With the costs of cheap power nowadays it's not a bad way to go -removes the need for an output transformer on the amp design making it lighter and smaller. You still have to be careful of LF though as saturated line speaker transformers and attenuators start to resemble a short-circuit. Using a smaller amp may work but the overall output might not get high enough. If the speakers are tapped at low wattages then moving it to the higher tap might give you enough. [/QUOTE]
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