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Ayre A new dimension of musical enjoyment

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Old 03-10-2019, 03:13 PM
dbphd dbphd is offline
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Default Preserving zero feedback

Would a passive high-pass filter between a preamp and amp preserve zero feedback, e.g., a fully balanced Marchand passive high-pass filter between an Ayre KX-5/20 and VX-5/20? Obviously the balanced cables that run between the preamp and amp preserve zero feedback.

I was up until 6 this morning reading about the virtues of Ayre's zero feedback design and reviews of the VX-5/20. I'd like to high-pass my KEF Ref 1s at 80 Hz, but not at the expense of the Ayre sound I so enjoy.
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Old 03-10-2019, 03:25 PM
clpetersen clpetersen is offline
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Default Filters

I am not familiar with the Marchand filter, but a filter has no feedback per se.
I do think that active filters (like a Bryston or JL Audio crossover) can often out-perform passive designs.
Are you certain of the high-pass frequency (80 Hz)?
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Old 03-10-2019, 05:41 PM
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The use of feedback or in your case zero feedback is accomplished within each individual component and is not related to the interaction of amp, preamp and speakers.
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Old 03-10-2019, 05:46 PM
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Quote:
Originally Posted by dbphd View Post
Would a passive high-pass filter between a preamp and amp preserve zero feedback, e.g., a fully balanced Marchand passive high-pass filter between an Ayre KX-5/20 and VX-5/20? Obviously the balanced cables that run between the preamp and amp preserve zero feedback.



I was up until 6 this morning reading about the virtues of Ayre's zero feedback design and reviews of the VX-5/20. I'd like to high-pass my KEF Ref 1s at 80 Hz, but not at the expense of the Ayre sound I so enjoy.


Yes it would.
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Old 03-14-2019, 04:42 PM
dbphd dbphd is offline
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I've now talked with Gary at Ayre and Phil Marchand, both of whom think a Marchand fully balanced passive high-pass filter could be inserted between the Ayre KX-5/20 preamp and VX-5/20 amp with no harm to the Ayre sound. So I've ordered the building of a 80 Hz 24 dB/octave filter. Its arrival is probably some weeks away at which time I'll reset the low-pass to the subs to match the high-pass crossover and slope.
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