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Re: Out of curiosity

Hi AJ,

I heard both the Arcam and Creek integrated amps while out demonstrating my new Sonic Décor on-wall speakers to dealers. I'm not normally impressed by solid state amps but these two lines caught my attention. I've heard various HK amps and receivers at work.

For your speakers, I recommend trying another amp than a HK receiver to power the mids and highs. I think you'll be pleasantly surprised!

What makes an amp sound dynamic, resolving, involving, and fun, while others don't, has to lie beyond standard frequency response, swept THD, and IM measurments. I would suspect it has to do with the behavior of an amplifier with dynamic, non-periodic signal content (like music) while powering complex, reactive loads (real speakers). I'm sure some of these amplifier designers have developed their own design recipe but doubt they'll be disclosing them any time soon! My forte is speakers and have a full-enough plate as it is designing transducers and systems, although I have designed an interesting all-triode, feedback-less, low output impedance phono preamp which I need to build up.

Thanks for the reminder about the JBL coax. We've been busy at AuraSound these past months with OEM laptop speaker and TV speaker projects and an interesting amplified speaker system for the iPod with a customer. But after that project starts production, I want to investigate developing a coincident coax with NRT motor structure for the mid-woofer.

Donald North

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