The LS26 is a signal distribution tool which can be used to split either 2 mono signals into 6 copies of each – or – a single mono signal into 12 copies of the original. These are boosted back up to line level and each given a volume control.
Front Panel
- CHANNEL B volume controls (7 – 12)
- SIGNAL B input clip indicator
- MONO / STEREO mode indicators
- SIGNAL A input clip indicator
- CHANNEL A volume controls (1 – 6)
Rear Panel
- CHANNEL A outputs 1 – 6 (6.3mm jack)
- INPUT A (6.3mm jack)
- MONO / STEREO mode switch
- INPUT B (6.3mm jack)
- CHANNEL B outputs 7 – 12 (6.3mm jack)
- IEC mains inlet & fuse
- Mains voltage selector
Applications
Applications for this function include…
Zone level control for a venue with many rooms fed from the same
stereo sound source (12 rooms for mono or 6 for stereo)
Multi-amplifier signal distribution where amplifiers have no
signal-through facility.
Speech distribution to headphone amplifiers for
interpreters/transcribers in conference situations.
Multi-level parallel processing in a studio scenario – where several
copies of the original are sent to various signal processors.
Connection
All connections are via unbalanced 6.3mm mono jack and operate at line
level (0.775Vrms @ 0dB).
Use good quality screened jack leads to connect the input signal to
INPUT A and INPUT B
(use only INPUT A if splitting a single mono signal to 12 outputs).
Connect each output to the respective amplifier (or processor) input,
again using good quality screened jack leads.
With amplifiers turned down, connect mains (ensuring correct supply
voltage is selected) using the supplier IEC mains lead.
Operation
Keep amplifier volume levels turned down. Select the mode – STEREO into
6 pairs of outputs or MONO into 12 outputs – on the MODE selector switch
at the rear.
Check input signal(s) for gain level by playing the sound source into
the LS26. If the CLIP indicators light up, reduce the output level of
the signal source until the clipping is eliminated.
Bring the amplifier levels back up to the maximum required level
(usually full power) for the speaker(s) being driven.
Control each OUTPUT via the level controls on the LS26 front panel
accordingly.
After use, turn amplifiers down before switching off power to the LS26
to avoid loud noises through speakers.
