CONNECTIONS

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:

 

XLR

Hot (+)

Pin 2

Cold (–)

Pin 3

Shield (Ground)

Pin 1

There is also a male XLR connector labeled THRU. This allows you to connect more than one SRM450v2 to the output of your mixing console. Simply plug the signal source output into the first INPUT jack, and patch that speaker’s THRU jack to the next INPUT jack, and so on, daisy-chaining multiple speakers (see diagram on page 6).

There is a limit to how many you can

daisy-chain together. A general rule is

to maintain a load impedance ten times

or more than the source impedance to

prevent excessive loading on the source. For example, if your mixer has an output

impedance of 120 ohms, then you can daisy chain up to sixteen SRM450v2s. This is a load of 1250 ohms (SRM450v2 input impedance=20 kohms; 16 of these in parallel=1250 ohms).

Since microphones typically have a higher output impedance, you should limit daisy-chaining from a mic source to two SRM450v2s (see the diagram on page 7).

The THRU jack is wired straight from the INPUT connector — there is no electronic circuitry between — so the signal coming out of the THRU jack is exactly the same as the signal going in.

PLACEMENT

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.

You can lay the cabinet down on its side and use the SRM450v2 as a floor monitor. The asymmetrical trapezoidal shape of the cabinet provides a perfect angle for aiming up toward performers from the front of the stage. When used for monitor applications, we recommend engaging the LOW CUT filter.

As with any powered components, protect them from moisture. If you are setting them up outdoors, make sure they are under cover if you expect rain.

The SRM450v2 generates magnetic fields. Do not place it closer than two feet (0.6 meters) from any TV set or computer monitor. Check the screen for any change in color or distortion. Do not place any magnetic audio or video tapes or computer discs near the SRM450s.

Room Acoustics

The SRM450v2 active speakers are designed to sound as neutral as possible; that is, to reproduce the input signal as accurately as possible, monitoring the sound rather than changing it.

Room acoustics play a crucial role in the overall performance of a sound system. However, the wide high- frequency dispersion of the SRM450v2 helps to minimize the problems that typically arise.

Balanced XLR Connectors

Top

900

900 Dispersion up to 20 kHz

10