Typically this is due to an open or short circuit on the cabling to the RSL-6, but there are a number of possibilities:

Select front panel control using the remote/local switch, this ensures that the mixer and the rest of the system is working correctly. Try the suspect RSL-6 on a short run of cable at the rack with the unit configured for remote control.

If the audio is coming out of the system, but the source is not changing, check the remote source select jumpers and remote/local switches corresponding to the zone. The precise details of the switches and jumpers does depend on the product, but in general there is a remote/local switch on the rear panel that should be in the remote position and the source select jumper should be in 'SW' position.

All channels (except channel 1) have input selector switches that allow a wide variety of input configurations. The switch should be pressed in for each channel that requires individual operation.

The mixer is likely to be configured for RSL-6 support (Remote source and level control). The details of the relevant jumpers does vary with the product, but in general the remote source select jumper for that zone should be set to the 'FR' position. These jumpers are usually located inside the product near to the rear panel source select switch. Refer to the manual for exact details.

The RSL-6 needs to be modified before it can control more than one zone. The modification involves the replacement of all 5 resistors on the RSL-6. The required values for the new resistors depend on the number of zones to be controlled. Refer to the table below to determine the correct values for your application.

  Number of Zones to be Controlled
Component 1 2 3 4 5 6 7 8
R1 5k6 2k7 1k8 1k3 1k2 1k 910 750
R2 3k9 2k 1k3 1k 750 680 560 510
R3 2k7 1k3 1k 750 620 510 430 360
R4 2k2 1k1 750 620 470 390 330 300
R5 1k8 910 560 390 330 270 240 20

We no longer manufacture the RSL-1. The RSL-6 circuitry is not compatible however it is possible to modify by changing some resistors. There are three possible modifications to the RSL-6 to make it work as an RSL-1:

  • Positions 1 and 2 work as off, positions 3, 4, 5 & 6 select lines 1, 2, 3 & 4 respectively. Fit 6k8 resistors to R3, R4 and R5. Do not fit resistors to R1 and R2.
  • Position 1 works as off, positions 2, 3, 4, 5 & 6 select lines 1, 2, 3, 4 & 5 respectively. Fit 6k8 resistors to R2, R3 and R4. Fit a shorting link to R5. Do not fit a resistor to R1.
  • Positions 1-4 select lines 1-4, positions 5 & 6 also select line 4. Fit 6k8 resistors to R1, R2 and R3. Fit a shorting link to R4 and R5.

Typically, problems of this nature are because the power supply is shutting down to protect itself from a short circuit or excessive load. The load from active plates, paging microphones and equalisation modules must not exceed the mixer's limits. The Z4ii and Z8ii venue mixers have an external load capacity of 120mA for the Z4ii and 190mA for the Z8ii. The current requirements for each of the separate modules are shown below.

Unit Required Current (mA)
CDPM Paging Microphones
CDPM-4 72
CDPM-8 83
CDPM-12 95
CDPM-16 107
Active Remotes
LM-1 12
DM-1 18
AE-1 9
Equalisation Modules
BEQ: M8, M32, MA12, 402, 502A, 802, MB4, MB24, 520B, 502BEX 12
BEQ: LT3202, LT4402, LT9402, LT9702 17
BEQ: M16 34

If you are using a Z4 or a Z8, check that the microphone is not plugged into general-purpose microphone input, Mic1 or Mic2. It must be plugged into an input marked for paging.

On the 46/50, CX163 and CX263 there are internal jumpers shorting the access contacts. These need to be removed to enable zone selection. If any of these jumpers are left on the busy light on the CDPM will be on. The jumpers are J20, J21, J22, J23 in the 46/50; J1, J2, J3 in the CX163 and J4, J5, J6 in the CX263.

Check the wiring to the analogue interface. If any of the zone access wires are shorted to ground, the busy light on the CDPM will be on. The level on the zone access terminals normally should be about 10. In the event of a short it would read about 0V. If in doubt, test the CDPM with a short length of cable next to the mixer.

Check the orientation of the IN/OUT socket. The audio is transmitted from the OUT socket, the IN socket is to receive audio from a daisy chained CDPM. In the case of CDPM with analogue interface, check if there is an audio cable in the XLR socket. Also check that the microphone level is turned up in the zone.

The microphone level is set too low. The LM-1 is fitted with a noise gate to eliminate noise when the LM-1 is not in use. Tapping the microphone is loud enough to open the gate but it will close down if the level is insufficient. If the microphone level is too loud when routed through, consider adjusting the amplifier level to allow signals to run at a higher level through the mixer.

Those sockets require plug-in screw terminals. Where our mixers require these they are shipped with the product. Should you require more or you are re-installing and need new ones, see Wareparts, for the accessory kits listed by model.

Alternatively they can be sourced via any of the main components wholesales (SEME, RS, Farnells) searching for Phoenix Connectors or Euro Connectors.

The approximate dimensions of a standard UK box as used by the RSL-6 are 25mm deep, 75mm high and 75mm wide.

The approximate dimensions of a double UK box as used by the LM-1 and DM-1 are 35mm deep, 75mm high and 135mm wide.

Press the power switch to turn off the DCM1. Hold the 'Next Function' button down and power the unit back on. Now, press the button next to Install and enter your pin to enter installer mode on the unit. Once in installer mode, press 'System' and cycle through the options until you reach 'Update Firmware'. This should display a '✔' underneath. Press down the rotary dial button, and the display should then change to an 'X'. The DCM1 should now no longer enter bootloader mode when powering up. 

Yes, this can be done by changing over an internal jumper. Jumper J11, located on the centre of the lower PCB, is set to stereo by default, but can be changed over to mono by taking the jumper off and moving it over to the other two pins. This should then output the audio for Zone 1 in mono.

You can connect a BT-1F as a line input via an FPA-1 (Facility Port Adapter). This product allows you to connect the BT-1F via RJ-45 using screened CAT-5/6 cable, to then come back out of the FPA-1 and connect directly into the unit as a line input.

You should now be able to connect to the BT-1F with any device with Bluetooth capabilities, and can use this input as a switchable source as you would with any other input.