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Reduced Vintage Updated Infinity SM150 stereo speakers - $300 (Nashville)

Reduced Vintage Updated Infinity SM150 stereo speakers 1 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 2 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 3 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 4 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 5 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 6 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 7 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 8 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 9 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 10 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 11 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 12 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 13 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 14 thumbnailReduced Vintage Updated Infinity SM150 stereo speakers 15 thumbnail
For sale are a pair of vintage Infinity SM150 speakers, all drivers work well, no issue, two 15 inch woofers were replaced with a better England-made Celestion G15Z-200 woofers (18 pound each), now they sound much much better than the original you, ask for $450. If the ad is up, it is available.

RARE VINTAGE CELESTION 15 INCH 200W SPEAKER G15Z 200

CELESTION G15Z-200 8 ohm loudspeaker. These monsters have 3" ventilated voice coils,10-pound magnet structures and heavy cast baskets. Each speaker weighs 18 pounds. The company doesn't make speakers like this any more due to high cost, take a peek at their website. Manufactured in 1982

The orginal Infinity 15 inch woofer is only 4.5 pounds, much less mass magnet and cast basket. I can put two orignal Infinity woofers back if you like.


They were updated as below:
1. Woofer reform with FSK-15A from simplyspeakers.com.
2. Adding bracing: insert a cross braces just above the woofer to reduce the rattle from that monster.
3. Adding Internal Damping: Speaker Sound-Absorbing Cotton Polyester Fiber Interior Insulation was installed.
4. The crossovers were recapped.
5. Improve the cabinets.

Specification as below:
Dimensions: 40 x 20 x 12 in. (100 x 50 x 30 cm)
Bass: 1 x 15 in. (38.1 cm) polypropylene coated woofer
Mids: 2 x 4.5 in. (11.4 cm) dome polypropylene coated midranges
Highs: 1 x 1 in. (2.5 cm) dome polycell tweeter
Suggested for amplifiers with: 10-300 Watts per channel
Frequency range: 29 Hz - 27 kHz
Crossover frequencies: 500 Hz, 5500 Hz
Sensitivity: 102 dB
Impedance: 8 Ohms

Re: Infinity SM 150
Submitted by Money Mike on November 15th, 2014.
My SM 150 speakers sound 3 billion times better since I had the crossovers recapped, fiberglass resined the interior cabinets, refoamed the woofers, added new poly dustcaps and also braced them.

There's a lot of haters out here that talk smack on this set of speakers and they have a valid reason to but after the restore that I've done to mine, they would think twice after a audition.

post id: 7765225963

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