User manual MARTIN AUDIO EM150

[. . . ] It can also be used with larger EM Series enclosures such as the EM26. Ideally suited to background and foreground music reproduction, the EM15 and EM150 are compact and easily installed. An external crossover is not necessary, but an EMX1A controller will increase the versatility of the complete system, adding relative level control and driver protection. 2 UNPACKING Each Martin Audio loudspeaker is built to the highest standard and thoroughly inspected before it leaves the factory. [. . . ] This is because music signals have a high peak-to-average "crest" factor. When an amplifier is severely overdriven, its output waveform is clipped (its peaks are squared off) ­ reducing the crest factor. In extreme cases, the waveform can approach that of a square wave. An amplifier is normally capable of producing far more power under these conditions than its undistorted rated power output. The use of very high power amplifiers with outputs greater than those recommended is discouraged. Care should be taken to avoid switch-on surges, which can result in momentary power peaks in excess of specified ratings. When powering up a sound system it is important to switch on the amplifiers after the mixer and control electronics have stabilised. When powering down the system, reverse the sequence and switch off the amplifiers first. 4 Martin Audio ­ EM SERIES CONTENTS < 6 > ENGLISH PRINT GUIDES CONNECTING TO AN AMPLIFIER Connections are made via stripped wires to avoid the need for soldered connectors. The EM15 is provided with two spring-loaded terminals on the rear of the enclosure and the EM150 is provided with two pairs of 4mm screw terminals ­ a pair for each 10"(250mm) driver. For mono EM150 operation these should be connected together externally in parallel: left Red (+) to right Red (+), left Black (-) to right Black (-). The paralleled mono impedance is 4 ohms. For stereo operation, separate connections should be made to the EM150's left and right terminals. The impedance in this case is 8 ohms left and 8 ohms right. Note: It is important to maintain consistent polarity throughout i. e. [. . . ] This warranty does not affect your statutory rights. 7 Martin Audio ­ EM SERIES CONTENTS < 9 EM15 > ENGLISH PRINT GUIDES TECHNICAL SPECIFICATIONS TYPE FREQUENCY RESPONSE RATED POWER SENSITIVITY MAXIMUM SPL RECOMMENDED AMPLIFIER DISPERSION NOMINAL IMPEDANCE configurable) BASS HIGH FREQUENCY ENCLOSURE CONNECTOR FITTINGS DIMENSIONS WEIGHT SHIPPING DIMENSIONS (Packed in pairs) SHIPPING WEIGHT (Packed in pairs) Ultra compact, two-way ICTTM 120Hz-20kHz ±3dB 75W AES, 300W peak 91dB 108dB continuous, 114dB peak 50-100W (into 4 ohms) 80 degs horizontal x 80 degs vertical 4 ohms (16 ohms optional/user 5" (125mm) 5" (125mm) ICTTM 5 litres, rear vented Spring-loaded M4 inserts for Omnimount 50 (W) 172mm x (H) 282mm x (D) 172mm (W) 6. 8ins x (H) 11ins x (D) 6. 8ins 5kg (11lbs) (W) 390mm x (H) 370mm x (D) 200mm (W) 15. 4ins x (H) 14. 5ins x (D) 7. 9ins 9kg (19. 8lbs) 8 Martin Audio ­ EM SERIES CONTENTS < EM150 > ENGLISH PRINT GUIDES TYPE FREQUENCY RESPONSE RATED POWER SENSITIVITY MAXIMUM SPL RECOMMENDED AMPLIFIER NOMINAL IMPEDANCE BASS ENCLOSURE CONNECTOR DIMENSIONS WEIGHT SHIPPING DIMENSIONS SHIPPING WEIGHT Ultra compact sub-bass system 45Hz-200Hz ± 3db 400W AES, 1600W peak (2 x 200W AES, 800W peak per driver) 98dB 123dB continuous, 129dB peak 400-500W (into 4 ohms) 2 x 8 ohms nominal stereo, 4 ohms nominal mono 2 x 250mm (10") extended throw 91 litres, vented 2 x spring-loaded (W) 790mm x (H) 360mm x (D) 410mm (W) 31. 1ins x (H) 14. 2ins x (D) 16. 1ins 31kg (68lbs) (W) 950mm x (H) 390mm x (D) 450mm (W) 37. 4ins x (H) 15. 4ins x (D) 17. 7ins 34kg (75lbs) NOTES (EM Series) Sensitivity measured in half-space conditions at 1 metre with 1 watt input, using band limited pink noise. SPL measured at 1 metre using band limited pink noise. Protective grilles: Perforated steel grey with 48% free air flow. [. . . ]