SRM350 2-WAY ACTIVE LOUDSPEAKER USER’S MANUAL
CAUTION AVIS RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL ATTENTION: POUR EVITER LES RISQUES DE CHOC ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L'USAGER. CONFIER L'ENTRETIEN AU PERSONNEL QUALIFIE.
Lend Me Your Ears Exposure to extremely high noise levels may cause permanent hearing loss. Individuals vary considerably in susceptibility to noise-induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time. The U.S. Government’s Occupational Safety and Health Administration (OSHA) has specified the permissible noise level exposures shown in this chart. Duration Per Day Sound Level dBA, In Hours Slow Response 8 90 6 92 4 95 3 97 2 100 1.
INTRODUCTION Thank you for choosing LOUD Technologies’ Mackie active sound reinforcement speakers. The SRM350 is an active two-way loudspeaker capable of extremely high sound pressure levels, and designed to give you the best performance of any loudspeaker in its class and price range. When we designed the SRM350s older sibling, the SRM450, our goal was to build a sound reinforcement speaker with the same fidelity and precision found in our reknowned HR824 studio monitors.
The Crossover The Active Advantage The built-in electronic crossover is a 24 dB/octave Linkwitz-Riley design. Although more expensive than other crossover designs, the benefits provided by the Linkwitz-Riley design have been well documented. These benefits include: • Absolutely flat frequency response throughout the bandpass, without the characteristic ripple near the crossover point exhibited by other designs.
HOOKUP DIAGRAMS Quick Start 1. Start with the following settings on the back of the SRM350: Turn the POWER switch off (down). Set the CONTOUR and MIC/LINE switches out. If using a microphone as the input to the SRM350, push the MIC/ LINE switch in. WARNING: Turn the LEVEL control down (counterclockwise) before every use. If not, you could be in for a startling surprise, especially if the last time you used it was with a microphone and now you want to connect a linelevel source. 2.
Next SRM350 SRM350 ACTIVE SOUND REINFORCEMENT SYSTEM SRM350 ACTIVE SOUND REINFORCEMENT SYSTEM LIMIT SIGNAL POWER LIMIT SIGNAL POWER 100Hz 12k/AIR ~120 VAC 60Hz CONTOUR 2.50A 230VA (+3dB) +45 +5dB OO INPUT LINE MIC 100Hz DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA AND REGGIO EMILIA, ITALY. CONTOUR 2.50A 230VA (+3dB) INPUT 100Hz DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA AND REGGIO EMILIA, ITALY. CONTOUR 2.
REAR PANEL DESCRIPTION The SRM350 has several connectors, controls, and indicators that you should understand. CONTOUR Pushing in this switch engages a filter that provides 3 dB of boost to the low and high frequencies (below 100 Hz and above 12 kHz). This provides a punchy, crisp sound for most live music applications. You can experiment with this switch by leaving it out for a while, then pushing it in to determine which way sounds best for your application.
Follow the Quick Start guide on page 6 for setting the LEVEL control. For most applications, it will be in the NORMAL position (12 o’clock) . If you have a particularly high line-level signal connected to the SRM350, you may need to turn the control down to the 9 o’clock position. If you have a low line-level or mic-level signal connected, you may need to turn the LEVEL control up to the 3 o’clock position.
CONNECTIONS PLACEMENT The SRM350 has a combination female XLR and 1/4˝ TRS input that accepts a balanced or unbalanced mic- or line-level signal. When connecting a balanced signal, be sure it’s wired per AES (Audio Engineering Society) standards: XLR TRS Hot (+) Pin 2 Tip Cold (–) Pin 3 Ring Shield (Ground) Pin 1 Shield The SRM350 active speakers are designed to sit on the floor, a tabletop, or to fit on a standard tripod speaker stand.
Here are some useful placement tips: • Avoid placing loudspeakers in the corners of a room. This increases the low-frequency output and can cause the sound to be muddy and indistinct. • Avoid placing loudspeakers against a wall. This, too, increases the low-frequency output, though not as much as corner placement. However, if you do need to reinforce the low frequencies, this is a good way to do it. • Avoid placing the active speakers directly on a hollow stage floor.
THERMAL CONSIDERATIONS AC POWER CONSIDERATIONS The amplifiers inside the SRM350 are convection cooled by a large heatsink. For efficient cooling, it is important to allow at least six inches of free space behind the SRM350. If the ambient temperature in the room is high, it could cause the amplifiers to overheat. In this case, you should try aiming a fan at the heatsink to increase the air flow through the fins.
Wherever possible, connect all of your equipment to the same electrical circuit. This will help reduce the possibility of a ground loop problem causing an annoying hum in your speakers. Low power components such as tape decks, mixers, effects processors and CD players should be connected to the same outlet as the SRM350s. Use fused power strips as shown in the diagram below. Make sure that the total current draw of your components does not exceed the capability of the outlets and power strips.
SERVICE INFORMATION Warranty Service No sound! Details concerning Warranty Service are spelled out on page 19 of this manual. If you think your loudspeaker has a problem, please do everything you can to confirm it before calling for service, including reading through the following troubleshooting section. Doing so might save you from being deprived of your Mackie loudspeaker.
Bad sound! • Is it loud and distorted? Follow the procedures described in the “Quick Start” section to verify that the levels are set properly. • Is the input connector plugged completely into the jack? Be sure all connections are secure. It’s a good idea to periodically clean all electrical connections with a non-lubricating electrical contact cleaner. Noise • Make sure all connections to the active speakers are good.
Repair Service for the SRM350 is available only from one of our authorized domestic service stations or at the factory, located in sunny Woodinville, Washington. Service outside the United States can be obtained through local dealers or distributors. If your SRM350 needs service, please follow these instructions: 1. Review the preceding troubleshooting suggestions. Please. 2. Call Tech Support at 1-800-258-6883, 7 AM to 5 PM PST, to explain the problem in detail.
SRM350 SPECIFICATIONS System Specifications Horn Design Frequency Response (–3 dB) 83 Hz - 18.
THRU TRS XLR 2 3 FUSE MACKIE DESIGNS SRM350 BLOCK DIAGRAM 08.20.
SRM350 LIMITED WARRANTY Please keep your sales receipt in a safe place. A. LOUD Technologies Inc. warrants all materials, workmanship and proper operation of this product for a period of five years from the original date of purchase, with the exception of the transducers, including woofers and compression drivers, which are warranted for two years from the original date of purchase.
LOUD Technologies Inc. 16220 Wood-Red Road NE • Woodinville, WA 98072 • USA US and Canada: 800.898.3211 Europe, Asia, Central and South America: 425.487.4333 Middle East and Africa: 31.20.654.4000 Fax: 425.487.4337 • www.mackie.com E-mail: sales@mackie.
