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Citation V
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Posted on July 27, 2014 at 13:38:17 | ||
Posts: 1800
Location: Omaha NE Joined: September 8, 2006 |
We just serviced a customer's Citation V. We replaced a couple of tubes and rebuilt/beefed-up the power supply. We then hooked it to a pair of Snell C IIs for burn-in and a listen check. On the 8-ohm taps the bass is phenomenal--deep, rich, rther amazing for a tubed amp. But the highs and to a lesser extent the mids are compressed and strident. On the 4-ohm taps the bass suffers a little as I've generally come to expect from the Snells, but the mids and highs open up. They're natural, not strident, really nice. The other amp that has had the "8-ohm sound" is the power amp section of a rebuilt Pioneer SX-1250. That leads me to wonder if there is an impedance mismatch or other oddity in the Snells. The woofers seem happier with a higher impedance amp, the mids and highs with a lower impedance amp? Why on earth would the woofers sound better hooked to a higher impedance? I can understand the mids/highs wanting a low-impedance amp/tap (damping, control). |