AVSL Citronic P44800 - Manual (Page 3)

172.248, 172.249 User Manual
Rear Panel
9. Cooling fan vents
10. CH2 jack and XLR parallel inputs
11. CH1 jack and XLR parallel inputs
12. SUB jack and XLR parallel inputs
13. LOW CUT on/off switch
14. FILTER on/off switch
15. CH2 output (SPK)
16. SUB output (SPK)
17. CH1 output (SPK)
18. IEC mains inlet and fuse
19. SUB cutoff frequency control
Operation
The stereo outputs (CH1 and CH2) should be connected to mid-top or full range speaker cabinets.
Minimum impedance for each stereo output should be no lower than 4Ω.
The SUB output is specifically designed to power a sub cabinet
Alternatively, 2 sub cabinets may be connected in parallel, provided that the total load is no lower than 4Ω
Connect speaker cabinets to channel outputs using good quality leads and ensure that the combined load on each
channel is no lower than 4Ω
(for speaker loads connected in parallel, 8Ω + 8Ω = 4Ω)
Connect each signal input from mixer or other line level source via the XLR or jack connectors on the rear panel using
good quality signal leads.
A LOW CUT switch is provided on the rear panel, which removes the very lowest frequencies which may be inefficient for
speaker drivers to reproduce, wasting power on inaudible output
The SUB output has a filter facility, which can be switched on via the FILTER switch
When this is switched in, the SUB input is inactive and the SUB amplifier is fed from the CH1 and CH2 inputs (merged
together) and the filter removes all of the signal above a cutoff frequency, allowing only low frequencies to be amplified
The cutoff frequency may be adjusted between 50Hz and 250Hz via the FREQ rotary control
A recommended start point is mid-way (approximately 150Hz) - this can be adjusted later as required
Jack and XLR inputs for each channel are wired in parallel, allowing the signal to be carried forward to further amplifiers
if necessary (if the input is XLR, the jack may be used as a signal output and vice versa)
Connect the amplifier to the mains outlet, making sure that the IEC lead is earthed, in good condition and connected
securely.
With channel gain controls turned fully down, switch on the power to the amplifier. This unit has a “soft-start” function
which makes some checks before engaging power to the amplifiers, which may take a few seconds.