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Original Message
RE: Amps for esl63
Posted by Satie on March 7, 2017 at 15:54:15:
It may not be any more sensitive at a given midrange freq, but the 2900 series does produce more SPL power with additional power amp capacity vs. the old 63 that played the same with 50 W models as it did with 200W amps of the same basic architecture. Much more bass and apparently louder, which it wasn't with the 63 with similar amps being swapped (50 watter vs. 200)..