Martin Logan woofer amplification
I'm pretty sure the original Summits used a bi-polar amp for the woofers. I think this trickled down to the Montis and Ethos, (and of course the Summit X). The specs for the woofer amp state 200 watts at 4 ohms. I would think a class D amp would have a much higher rating, (even for just a marketing tool). |
Op amps ("operational amplifiers") are not power amplifiers, they are small signal devices used in line-level and other low power circuitry. However it is quite possible that the input circuit or other circuitry that is "ahead" of the power stage in the amplifier includes an op amp, with one of its purposes perhaps being to perform the necessary low pass filtering. Op amps tend to often be viewed negatively in high end audio, which is deserved in some cases and not deserved in others. In a bass amplifier application I would not expect the use of an op amp to necessarily mean compromised sound quality. But the dealer may not understand what an op amp is, or he may be dogmatically biased against them, or he may be anticipating that his potential customers would be dogmatically biased against them. Regards, -- Al |
