Devil is in the details

Posted by Iron Knee (A) on October 29, 2013 at 11:58:50

In Reply to: Realistic Mach 1 is very high efficiency posted by bjh on October 28, 2013 at 08:05:55:

Conjecture perhaps but some details seem to be missing at this point from the other posts I see.

First, a pair will yield 3dB more output than a single speaker. Specs are usually give per single speaker and I assume you are actually listening to a pair.

Secondly. The room they are in will accentuate apparent efficiency depending on the layout, the wall surfaces and the speaker placement. If you have them in the corners, expect a rise of a few dB over the free field measurements.

Let us suppose the speaker in question has a rating of 90dB 1W /M. The pair should get you in the 93 territory. The L pads on the mid and tweeter can go beyond the "level" setting possibly adding a few more dB above 800Hz. With corner placement (you did not say) it is possible to get above 95dB with one watt out of the pair in a room, especially if you put yourself near an area of the room where the room appears to sing.

Let's suppose (best case scenario) that with these details you are in the 96/97dB range with one watt. If you are used to 85 to 87dB speakers, this is like using 10 times the power to match the more efficient speakers. You are certainly not off base thinking these speakers have high efficiency given that conjecture.

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Follow Ups Full Thread

Topic - Realistic Mach 1 is very high efficiency - bjh 08:05:55 10/28/13 (18)

My Favorite Mach I Story - Awe-d-o-file 19:02:36 10/29/13 (2)

RE: My Favorite Mach I Story - Crazy Dave 13:01:37 10/30/13 (0)

Priceless. ;) nt - bjh 19:05:40 10/29/13 (0)

Devil is in the details - Iron Knee 11:58:50 10/29/13 (1)

All I knows is ... - bjh 12:55:37 10/29/13 (0)

RE: Realistic Mach 1 is very high efficiency - Paul Joppa 12:29:38 10/28/13 (0)

No way - badman 08:51:21 10/28/13 (5)

I thought the "110 dB" comment was max output, not sensitivity - mhardy6647 11:02:39 10/28/13 (2)

RE: I thought the "110 dB" comment was max output, not sensitivity - zobsky 09:25:30 10/29/13 (0)

RE: I thought the "110 dB" comment was max output, not sensitivity - Bill Fitzmaurice 12:10:01 10/28/13 (0)

Maybe 100, I'm not a numbers guy apparently. But high! like Zu Audio efficient. :( - bjh 08:56:07 10/28/13 (1)

Really ? - djk 22:28:24 10/28/13 (0)

RE: Realistic Mach 1 is very high efficiency - Hornlover 08:48:08 10/28/13 (5)

RE: Realistic Mach 1 is very high efficiency - KanedaK 12:56:14 10/29/13 (3)

RE: Realistic Mach 1 is very high efficiency - Geary Lyons 13:41:16 10/29/13 (2)

RE: Realistic Mach 1 is very high efficiency - KanedaK 13:46:39 10/29/13 (1)

RE: Realistic Mach 1 is very high efficiency - Bill Fitzmaurice 16:33:46 10/29/13 (0)

RE: Realistic Mach 1 is very high efficiency - bjh 08:54:03 10/28/13 (0)

Follow Ups

Devil is in the details - Iron Knee 11:58:50 10/29/13 (1)

All I knows is ... - bjh 12:55:37 10/29/13 (0)

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