Martin Logan B10 Speaker Review

[AnalogSteph]

While I'm reading this thread:

Yes, but the measured sensitivity of 87 dB, although 5 dB lower than rated, is still 3 dB higher than many other speakers of similar size have (~84 dB).

It is well and truly a 4 ohm speaker, mind you. Per watt, that would be closer to 84 dB, much like you would expect for the size. (Keep in mind that the woofer is a tad larger than your average 5.25", too.)

 

[Axo1989]

Even though we think directivity errors are not correctable, research into room EQ shows that it is worthwhile trying to correct them. That would call for line A to be correct, needing to fill in the region between 1 and 3 kHz. This resulted in yellow filter #4. I tested this by itself and it nicely increased instrument separation (much like I hear in headphones with the same problem) with better fidelity overall.

While I really like the effect of the yellow filter on lower treble, I thought speaker sounded a bit bright. Now putting in the shelving filter did the job bringing in the highs in balance.

I spent the next half hour tuning the last two filters and where I got them was optimal across large number of reference tracks.

Despite the plurality of filters, the overall effect is subtle but bested the stock tuning which now sounded a bit dull. Performance was very enjoyable across every reference track I throw at the B10.

That discussion and those EQ experiments (equalising to the two different trend-line approximations) were particularly interesting. And rewarding apparently.