SRM450v2 Powered Loudspeaker OWNER’S MANUAL
IMPORTANT SAFETY INSTRUCTIONS 1. 2. 3. 4. 5. 6. 7. Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with a dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9.
Contents IMPORTANT SAFETY INSTRUCTIONS........................................2 CONNECTIONS.......................................................................10 INTRODUCTION........................................................................4 PLACEMENT............................................................................10 HOOKUP DIAGRAMS...............................................................6 Room Acoustics..............................................................
INTRODUCTION Thank you for choosing LOUD Technologies’ Mackie active sound reinforcement loudspeakers. The SRM450v2 is a redesigned version of our popular SRM450 active loudspeaker. With its newly designed Class-D Fast-Recovery amplifiers, high-output compression driver, and 12" woofer, it produces an even smoother sound than the original. SRM means Sound Reinforcement Monitor, and the SRM450v2 truly produces a studio quality sound in a sound reinforcement speaker.
The Cabinet The SRM450v2 cabinet was designed to be the strongest molded composite cabinet on the planet. This material is as strong as concrete, and rigid enough to prevent unwanted vibrations in the cabinet. It has built-in fly points for hanging, and a socket in the bottom for mounting on a tripod stand. Although it is an exceptional choice for installed sound situations, its light weight and durable finish also make it ideal for portable sound system use.
HOOKUP DIAGRAMS Quick Start 1. Start with the following settings on the back of the SRM450v2: Turn the POWER switch off (down). Set the TIMED TURNOFF, CONTOUR, and LOW CUT switches out. 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 line-level source. 2.
For microphone connections, you can daisy-chain up to two SRM450v2s using the THRU jacks as shown. Dynamic Microphone Take great care to point any microphones away from the SRM450v2s, otherwise you may get feedback.
REAR PANEL DESCRIPTION The SRM450v2 has several connectors, controls, and indicators that you should understand. 1. IEC Socket This is where you connect the supplied AC linecord to provide AC power to the SRM450v2’s built-in power amplifiers. Plug the linecord into an AC socket properly configured for your particular model. Note: If you happen to lose the AC linecord, replacements are readily available at any office or computer supply store. Always use a three-pin plug with a ground pin. 5.
8. LEVEL 10. PEAK Indicator This is used to adjust the signal level going into the built-in power amplifiers, from off, up to 40 dB of gain. Since the SRM450v2 incorporates Mackie’s world-class low-noise mic preamp technology, you can connect either a line-level or a microphone-level signal to the input, and use this control to adjust the level correctly. When the signal levels at the amplifier outputs approach clipping, a soft compression circuit is activated that reduces the input signal.
CONNECTIONS PLACEMENT The SRM450v2 has a female XLR 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: The SRM450v2 active speakers are designed to sit on the floor, a tabletop, or to fit on a standard tripod speaker stand. They can also be suspended by the rigging points, shown opposite.
Here are some other 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 The amplifiers inside the SRM450v2s are convection cooled by a large heatsink. For efficient cooling, it is important to allow at least six inches of free space behind the SRM450v2. If you use the SRM450v2 on its side for stage monitor applications, we highly recommended that you engage the rear panel LOW CUT switch. This will allow more power for useful monitor frequencies, while reducing the possibility of overheating.
For the US 120 V model: A maximum of five SRM450v2s can be connected per 15A service. This allows each SRM450v2 to be safely operated at its maximum level. Don’t use an outlet if it is wired improperly! This is to protect yourself as well as your equipment. When turning your system on, turn on the SRM450v2s last. This will stop any turn-on thumps and bangs from your source equipment being amplified. Never remove the ground pin on the power cord of the SRM450v2 or any other component.
SERVICE INFORMATION If you think your Mackie product has a problem, please check out the following troubleshooting tips and do your best to confirm the problem. Visit the Support section of our website (www.mackie.com/support) where you will find lots of useful information such as FAQs and other documentation. You may find the answer to the problem without having to send your Mackie product away.
Noise • Make sure all connections to the active speakers are good. • Make sure none of the signal cables are routed near AC cables, power transformers, or other EMI-inducing devices. • Is there a light dimmer or other SCR-based device on the same AC circuit as the SRM450v2? Use an AC line filter or plug the SRM450v2 into a different AC circuit. • Disconnect any cables which come in from outside, such as cable TV, satellite TV or roof top antennas.
Repair Dimensions For warranty service, refer to the warranty information on page 19. 15.4 in/390 mm CARE AND MAINTENANCE 14.8 in/376 mm If you do not have access to our website, you can call our Tech Support department at 1-800-898-3211, Monday-Friday, normal business hours, Pacific Time, to explain the problem. Tech Support will tell you where the nearest factory-authorized service center is located in your area. 26.
SRM450v2 SPECIFICATIONS System Specifications Line Input Power Frequency Response (–3 dB) 55 Hz – 18 kHz Frequency Range (–10 dB) 45 Hz – 20 kHz Directivity Factor; Q (DI) 9.95 (9.
1 1 FUSE THRU INPUT POWER SWITCH SIGNAL SENSE 3 2 3 2 ON OFF SWITCHING POWER CONTROLLER +15VDC LOW AC VOLTS SENSE THERMAL SWITCH LOW CUT POWER TRANSFORMER TIMED TURNOFF SIGNAL SENSE SIGNAL LED J15 + LO VDC – + MID VDC – HI-PASS THRESHOLD 176uS 40-120 Hz DELAY + HI VDC – SWEEPING FILTER MUTE POWER LEDS MUTE ON/OFF CONTROL THERMAL LED CONTOUR COMPRESSOR LPF THRESHOLD LO-PASS COMPRESSOR HI-FREQ PEAK DETECTION BASS CONTROL SERVO LOOP LO-FREQ AMP MUTE HI-FREQ AMP
Mackie Limited Warranty Please keep your sales receipt in a safe place. This Limited Product Warranty (“Product Warranty”) is provided by LOUD Technologies Inc. (“LOUD”) and is applicable to products purchased in the United States or Canada through a LOUD-authorized reseller or dealer. The Product Warranty will not extend to anyone other than the original purchaser of the product (hereinafter, “Customer,” “you” or “your”). For products purchased outside the U.S. or Canada, please visit www.mackie.
16220 Wood-Red Road NE • Woodinville, WA 98072 • USA United States 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.
