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.

2. POWER Switch

Switch up to turn the SRM350v2 on. Make sure the LEVEL control is down before you turn it on. Press the bottom of this switch to put the speaker into standby mode. It will not function, but the circuits are still live. To remove AC power, either turn off the AC mains supply, or unplug the power cord from the speaker and the AC mains supply.

3. POWER ON Indicator

When the POWER switch is turned on, and the linecord is connected to an active AC Mains supply, this indicator, located just above the POWER switch, glows to let you know that you’re ready to rock and roll. The cool blue LED on the front of the speaker works in the same way.

4. TIMED TURNOFF

When this switch is pushed in, the built-in amplifiers turn on and off depending on the presence or absence of an input signal. An input signal level of –45 dBu (minimum) activates the auto-on function. A silent period greater than three minutes activates the auto-off function. The blue LED on the front of the speaker reflects the state of the amplifiers.

THERMAL

5. THERMAL Indicator

This LED lights if the heatsink temperature exceeds a safe operating temperature and triggers the thermal safety switch. In the unlikely event that this occurs, the built-in amplifiers shut down until the heatsink temperature cools back down. Then the thermal switch resets itself, the THERMAL indicator turns off, and normal operation resumes.

If the SRM450v2 keeps shutting down, make sure there is plenty of ventilation to the rear panel. Please see “Thermal Considerations” on page 12.

6. 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. It is especially useful when listening at lower volumes, as it highlights the bass like a Loudness switch, in addition to boosting the highs.

7. LOW CUT

Pushing in this switch engages a low-cut filter, which rolls off the low frequencies below 75 Hz. This is useful for minimizing stage noise (rumble) and microphone handling noise.

It is highly recommended that you engage this switch when using the SRM450v2 as a stage monitor. This allows the bass amplifier to utilize its power for those frequencies useful in stage monitor applications.

PEAK SIGNAL PRESENT

ON

POWER

NORMAL

 

(+4dBu)

 

LINE

MIC

OFF

TIMED TURNOFF

ON

O

100Hz

12k/AIR

75Hz

OO +40dB

CONTOUR +3dB

LOW CUT

LEVEL

 

 

 

THRU INPUT

PARALLEL

8