Which speakers are higher efficiency?


Hi, I am in the market to buy a high efficiency speakers to match my 300B with given 15W output. When I do some search online, I have 2 speakers in my mind:

Reference 3a Grand Veena Loudspeakers
Efficiency: 90 dB. 1Watt/meter.
Frequency response: 36Hz - 20 kHz (+/-) 3dB.
Up to 100 kHz high frequency extension.
Bass loading: F3@ 36Hz., tuned port,
quasi-second order, -15dB at 20Hz.
Impedance: 5 Ohm (+/-0.5 Ohm).
Power handling: 200 Watts RMS.
Phase: Almost constant at 10 degrees @94dB, wide band.

Focal 1037be
Type: 3-way bass-reflex floor standing speaker
Frequency response (+ or-3dB) 38hz-40hz
Sensitivity (2,83 V/1m) 91dB
Nominal impedance 8 Ohms
Minimum impedance 3,5Ohms
Crossover frequency 350Hz/2000Hz

Just look at the number, Focal 1037be is more efficiency, b/c it gives 91dB v.s. Reference 3a Grand Veena only give 90dB. Is that right? or am I missing something here?
Or can you guys suggest a 4~6k high efficiency speakers for me?
Thanks,
audiorichard

Showing 1 response by lhf63

MSRP on the Reference 3A Grand Veena is $8k, and on the Focal it's $11k. So if you say $4k - $6k I assume you're looking for a used pair.

While I agree that in a smaller room, with the right sorts of music, 24W might be enough for those speakers (but see note below), there are others you could consider that are higher efficiency and might give you more options in music. A few easy examples would be the Zu Audio Druid (101dB, 12-ohm impedance, $3500 MSRP) and the Emerald Physics CS3 (95dB, 8 ohms nominal, MSRP $3k).

There's more to the equation than just RMS watts and sensitivity. In particular, both the Reference and the Focal drop to around 4-ohm impedances somewhere in their curves, and this means your amp has to supply the corresponding current (or live with the dynamic limitation). This is where solid-state is usually better than tubes.

IMO the Druid is a much nicer match to your amp than the speakers mentioned, as its higher sensitity and higher impedance will make much smaller demands on the amp. That is not to say that those speakers can't work, just that they don't seem to be particularly well-mated.

Lou