Efficiency of older speakers (1 Viewer)

[Brian Campbell]

I have some old Infinity Studio Monitor 100s (circa 1987)which I'm using as my fronts.

Is there anywhere online I can find out what their efficiency is? I don't have an SPL meter or any equipment to measure it.

Or does anyone have an estimate? They are 2-way speakers with a 10" woofer and a fairly large enclosure (approx. 14" x 12" x 40").

I'd also like to find out their min/max power handling specs.

 

[Wayne A. Pflughaupt]

It’s for moments like this that I keep my old Audio Annual Equipment Directories around!

From the 1987 edition: Infinity SM 100 (I assume that’s the one?): Frequency response, 35-27kHz (no ± given), Sensitivity, 98dB SPL (1 meter, 1 watt), Minimum power 10 watts, Nominal impedance 8 ohms, Minimum impedance 6 ohms.

Sorry, Brian, Audio did not list specs for maximum power handling.

Regards,

Wayne A. Pflughaupt

 

[Brian Campbell]

Whoa! That's great. Thanks so much for the information, Wayne.

Man, this forum is awesome!

 

[Wayne A. Pflughaupt]

We aim to please!
Regards,
Wayne A. Pflughaupt

 

[matthew_rm]

98? Are the horns??

 

[Brian Campbell]

I was surprised at the 98 also. No, they are standard 2 way speakers, no horn tweeter.