Infinity SM 152 speakers offer exceptional quality of sound, though they are large and heavy. In 1990 these speakers sold for approximately £390 each, and today consumers still compete for purchasing this model on websites, such as eBay. Repair rates are slightly expensive, since the replacement of crossovers, tweeters and four mid-range speakers costs approximately £325. The dimensions of SM 152 speakers are 18 inches in width, by 14 inches in depth, by 40 inches in height.
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Recommended amplifier power for Infinity SM 152 speakers is 10 to 300 watts. In addition, the nominal impedance rating is 8 ohms--measurement of electrical resistance between two points on a conductor--as one volt between them produces one ampere.
The frequency response range for Infinity SM 152 speakers is 44 Hz (hertz) to negative 25 kHz (kilo hertz), plus or minus 3 dB (decibels), and the sensitivity rating is 102 dB, with one watt per meter. The crossover frequencies are 500 Hz and 5.5 kHz.
Woofer and Tweeter
Infinity SM 152 speakers have 15-inch woofers, which are equivalent to 381mm (millimetres). These woofers and also two 4.5-inch mid-range drivers have a polypropylene coating. The Infinity SM 152 tweeter has a one-inch, high output polycell.
When dealing with wires and plugs, turn off your equipment to ensure that transients--clicking sounds--do not enter your speakers.
Amplifiers should not be "on" when making component connections.
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