Bench Test: "The Sound of Style"
By Tom Nousaine
|Infinity Total Solutions TSS-4000||Mirage Omnisat V2 series||Polk Audio RM30|
|FREQUENCY RESPONSE (at 2 meters)|
|front left/right||124 Hz to 15.4 kHz ±2.9 dB||63 Hz to 13.8 kHz ±9.5 dB||92 Hz to 14.4 kHz ±4.1 dB|
|center||115 Hz to 15.1 kHz ±3.1 dB||89 Hz to 11.8 kHz ±6.3 dB||92 Hz to 15.1 kHz ±3.6 dB|
|surround||143 Hz to 15.2 kHz ±3.3 dB||90 Hz to 16.3 kHz ±7.9 dB||127 Hz to 12.2 kHz ±3.5 dB|
|subwoofer||43 to 134 Hz ±2.1 dB||31 to 101 Hz ±2.0 dB||36 to 113 Hz ±2.1 dB|
|SENSITIVITY (SPL at 1 meter with 2.83 volts of pink-noise input)|
|front left/right||87 dB||88 dB||91 dB|
|center||87 dB||83 dB||91 dB|
|surround||87 dB||82 dB||87 dB|
|front left/right||3.8/5 ohms||4.0/6 ohms||3.0/5 ohms|
|center||3.8/5 ohms||3.2/5 ohms||3.0/5 ohms|
|surround||4.0/6 ohms||4.4/6 ohms||3.5/6 ohms|
|BASS LIMITS (lowest frequency and maximum SPL with limit of 10% distortion at 2 meters in a large room)|
|front left/right||80 Hz at 73 dB||80 Hz at 89 dB||80 Hz at 90 dB|
|center||80 Hz at 73 dB||80 Hz at 88 dB||80 Hz at 90 dB|
|surround||80 Hz at 67 dB||80 Hz at 71 dB||100 Hz at 76 dB|
|subwoofer||25 Hz at 87 dB||20 Hz at 82 dB||25 Hz at 82 dB|
|average SPL from 25 to 62 Hz||98 dB||104 dB||100 dB|
|maximum SPL||107 dB at 62 Hz||109 dB at 62 Hz||107 dB at 62 Hz|
All of the curves in the frequency-response graphs are weighted to reflect how sound arrives at a listener's ears with normal speaker placement. The curve for the left/right front channels reflects response averaged over a ±30° window, with double weight at 30° (the most typical listening angle). The center-channel curve reflects response averaged over ±45°, with double weight directly on-axis of the primary listener. The surround-channel curve shows response averaged over ±60°, with double weight at 60° because most sound from these speakers will reach the listener after reflection from room walls. Each subwoofer's bass limits were measured with it set to maximum bandwidth and placed in the optimal corner of a 7,500-cubic-foot room. In a smaller room users can expect 2 to 3 Hz deeper extension and up to 3 dB higher sound-pressure level (SPL).
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