7. SPECIFICATIONS
SYSTEM
Freq. Range | 60 |
Freq. Response | 75 |
Horz. Coverage Angle | 110° averaged 800 Hz to 16 kHz |
Vert. Coverage Angle | 110° averaged 800 Hz to 16 kHz |
Directivity Factor; Q (DI): | 5.6 (7.5) averaged 800 Hz to 16 kHz |
System Sensitivity1: | 87 dB, 1W @ 1m |
Rated Maximum SPL: | 108 dB, @ 1m |
System Nominal Impedance: | 4Ω (bypassed) |
System Input Power Rating2 |
|
Applicable Power: | 60W rms (bypassed) |
Musical Power: | 120W rms (0.5 sec ON, 0.5 sec OFF, bypassed) |
Peak Power: | 150W rms (60W rms + 4.5 dB crest factor, bypassed) |
Constant Voltage: | 25V, 50V, 70V, 100V |
Power Taps: | 1W, 5W, 10W, 20W, 30W |
Crossover: | 4.0 kHz |
TRANSDUCERS
5 in/130 mm carbon fiber woofer | |
Horn loaded 0.5 in/13 mm dome tweeter, Ferrofluid cooled |
PHYSICAL
Enclosure: | 45° back angles, high density polystyrene |
Attachment Inserts: | Four points M6 threaded, two on back, one on top, and one on bottom |
Mounting Hardware: | |
Color: | Matte black (SMS4) or white (SMS4W), scratch resistant paint |
Grille: | Matching perforated steel grille |
Input Connectors: | |
Dimensions (HxWxD): | 10.62 in/270 mm x 7.36 in/187 mm x |
| 6.77 in/172 mm |
Net Weight: | 8.0 lb/3.6 kg |
1 Measured on axis in the far field with 1 watt (2.00 V rms @ 4 ohms) input and referenced to 1 meter distance using the inverse square law. Listed sound pressure represents an average from 300 Hz to 3 kHz.
2 The specifications provide three power values, which are determined by submitting the speaker to a series of laboratory tests lasting two hours each. In the test for Applicable Power, pink noise is applied in the operating range of the speaker, and the signal is filtered at the ends of the band with a 12 dB/octave slope. The applicable power value indicated is an rms value. The signal peaks present in the pink noise, adjusted according to the type of speaker being tested (e.g., +4.5 dB with respect to the average level), are used for determining the Peak Power value. To identify the Musical Power, the rms power value obtained in the first test is doubled, applying it with impulses lasting 0.5 seconds (0.5 sec ON), and at an interval of 0.5 second between one application and the next (0.5 sec OFF). For all the tests, the maximum power that the speaker can withstand without sus- taining permanent damage is assumed as the power value.
SMS4 – 5