AVSL 953.022 LS26 - Manual (Page 3)

Applications
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.
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. 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 required 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.
SPECIFICATIONS
Power supply 115/230Vac 50/60Hz - selectable (IEC)
Inputs A & B, (6.3mm jack)
Outputs 1 - 6 & 7 - 12 (6.3mm jack)
Input impedance 20kohm
Output impedance 220ohms
Frequency response 20Hz - 20kHz, +0/-1dB
Signal to noise ratio >95dB
THD <0.008%
Dimensions 483 x 44 x 170mm
Weight 2.0kg
TROUBLESHOOTING
No function and Power switch LED is not lit
Ensure mains voltage is correct (check selector) and connected properly
Ensure mains outlet switch is on
Power is on but no audio output
Check all jack leads are OK and connected properly
Check that OUTPUT controls are not turned fully down
Check that inputs and outputs are connected the correct way around
Make sure input is connected to INPUT A in MONO mode
Check both inputs are present in STEREO mode
Distorted output
Reduce level of input source
Reduce OUTPUT level controls
Check that output is not fed to low impedance inputs in error
Output is very low level
Ensure input source is line level (0.775Vrms)
Increase OUTPUT level control(s)
Increase signal source level
Note: for further troubleshooting, refer equipment to qualified service personnel for testing
© Citronic 2011