Klark Teknik DY11 7HJ manual Active splitter

More about splitters

Active splitter

An active splitter uses active electronic circuitry to address the problems inherent in passive (parallel and transformer isolated) splitter systems.

PA company responsibility

Safe audio signals

Sensitive audio signals

	-40dB (0.01V)
-46dB (0.005V)
Outside
Broadcast	Local
	Ground

GAIN	BUFFERED
	-10dB (0.30V)
	LIFT
ISOLATED	BUFFERED
	-10dB (0.30V)
	LIFT

Stage box (active)

		MON console
	Local	(for example, the
Ground		Midas Siena)

Independent broadcaster

Grounds				FOH console
	Local	(for example, the
	Ground		Midas Verona)

An adjustable gain stage is added at the front end of the split allowing the user to add a pre-determined amount of gain to the low level mic signal early in the system signal path. This is then buffered, electronically balanced and driven anywhere up to or at line level (making the signal relatively safe from external interference) before being sent on to the attached mixing consoles. This approach reduces the length of sensitive mic cables to a bare minimum, which dramatically improves audio performance by reducing cable losses and additional noise, and also keeps the mic loading normal, resulting in a far brighter and more accurate sound. Ground lift switches are provided on the electronic outputs to enable isolation, if required.

In addition, a transformer isolated output - normally derived as a copy of the post-preamp signal, but on the Square ONE Splitter is tapped off before the gain stage - is buffered and driven, making it relatively safe from external interference. This would typically be used for broadcasters who prefer to add their own gain and may also be running their system from a different power source.

Other useful features usually included with an active splitter - and especially on the Square ONE Splitter - are local metering, +48V phantom power and a solo system with headphone output to allow local monitoring.

26 Square ONE Splitter