User manual MARTIN AUDIO SCREENSUB1A SCHEMATICS

[. . . ] GREEN/YELLOW BROWN BLUE EARTH LIVE NEUTRAL WARNING: The M2 Controller must always be operated with the mains safety earth connected. The M2 is supplied from the factory in either 100-120V or 200-240V versions Mains voltage tolerance +/- 10% on each setting Fuse: - type `T' semi-delay 200mA (L) 100-120V Fuse: - type `T' semi-delay 100mA (L) 220-240V NO ATTEMPT SHOULD BE MADE BY THE USER TO CHANGE THE MAINS OPERATING VOLTAGE FROM THAT SUPPLIED, REFER TO QUALIFIED PERSONNEL ONLY This equipment must be earthed. ! 4 CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN DO NOT EXPOSE TO RAIN OR MOISTURE It should not be necessary to remove any protective earth or signal cable shield connections. SAFETY FIRST It is important that loudspeaker systems are used in a safe manner. Please take some time to review the following points concerning safe use of SCREENSUB1A compact loudspeakers. [. . . ] Hearing loss is cumulative and can result from levels above 90dB if people are exposed for a long period. Never stand close to loudspeakers driven at high level. 3 Martin Audio ­ M2 and SCREENSUB1A CONTENTS < > PRINT GUIDES ENGLISH 4. 1 Tripod mounting The SCREENSUB1A incorporates a pole mounting socket to facilitate mounting on tripod stands. When using stands, the following precautions are advised: Ensure that the stand will support the weight of the speaker by checking the stand manufacturers rating. Make sure that the stand is placed on a level surface and that its legs are fully extended. Do not place more than one speaker on each stand. Run cables so that they do not present a trip hazard which could pull the speaker over. When used outdoors in the wind, it may be necessary to add some weight to the base of the stand. When using a pole mount with a sub-bass system, observe similar precautions. 4. 2 Stacking Ensure that the floor or stage is level and solid. Because the HF diaphragm is energised by induction, it has no voice coil. This means that the most common form of failure in music systems tweeter voice coil burnout - has been eliminated. In addition, although the ICTTM unit is a true two-way device, there is no separate electrical crossover network, since the crossover function is inherent in the ICTTM principle. An internally mounted filter ensures smooth transition from the bass section into the twin 10" (250mm) ICTTM drivers. 8 AMPLIFIER POWER The ICT 500 is designed to be used with a professional standard power amplifier capable of producing 500-1000 watts per channel into 4 ohms. 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 electronic crossover etc. When powering down the system, reverse the sequence and switch off the amplifiers first. 8. 1 Connecting to an amplifier The panel at the rear of the SCREENSUB1A is fitted with a Neutrik Speakon NL4 connector wired as follows: PIN PIN PIN PIN 11+ 22+ -ve +ve N/C N/C 6 Martin Audio ­ M2 and SCREENSUB1A CONTENTS < 8. 2 > PRINT GUIDES ENGLISH Cable lengths When connecting an SCREENSUB1A to an amplifier, it is recommended that the return resistance of the cable used is less than one tenth of the nominal impedance of the system or systems in parallel. The table below gives an indication of the maximum permissible cable runs for various conductor cross-sectional areas driving 4 ohm loads. [. . . ] Conductor CSA 1. 0mm2 1. 5mm2 2. 0mm2 2. 5mm2 4. 0mm2 6. 0mm2 Maximum Cable Run 4 ohms (1 x ICT 500) 11m 17m 22m 29m 44m 66m To work out the actual return resistance R for cable run of length L, with each conductor having cross-sectional area A, use the formula: R = 2 x 0. 017 x L A 9 WARRANTY Martin Audio SCREENSUB1A Compact Loudspeakers are warranted against manufacturing defects in materials or craftsmanship over a period of 5 years from the date of original purchase. The M2 System Controller is warranted against manufacturing defects in materials or craftsmanship over a period of 1 year from the date of original purchase. During the warranty period Martin Audio will, at it's discretion, either repair or replace products which prove to be defective provided that the product is returned in its original packaging, shipping prepaid, to an authorised Martin Audio service agent or distributor. [. . . ]