Cloud CA Series - Rear Panel Description; Rear Panel Connectors and Controls

CA Series Installation & User Guide v1.0
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Clearly better sound
Rear Panel DescriptionRear Panel Description
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1. INPUTS CH 1 ... CH n – one 3-pin, 3.5 mm-pitch screw-
terminal connector per amplier channel. The inputs are
balanced. Connect the audio sources here.
2. INPUT ROUTING – a 2-, 4-, 6- or 8-way DIP switch
depending on model; exception is Model CA2250 which
uses SW4 (CH2 INPUT ROUTING) of the single 8-pole
DIP switch. The factory default setting is with all switch
sections up: in this state each amplier channel will be fed
by the same-numbered input connector. See page 13
for full description of function. Note that section SW1 on
Models CA2500/4250/6160/8125 has a different purpose.
3. LEVEL – one recessed preset-type control per channel:
adjusts the output level of the channel.
4. SPEAKER OUTPUTS – one 2-pin, 5 mm-pitch screw-
terminal connector per amplier channel. Connect the
feeds to the loudspeaker systems here. Note that the
same connectors are used for both low impedance and
high impedance (70/100 V-line) operation.
5. 65Hz FILTER – a 2-, 4-, 6- or 8-way DIP switch
depending on model; exception is Model CA2250 which
use SW1 and SW2 (CH1/CH2 65Hz HPF) of the single
8-pole DIP switch. The factory default setting is with all
switches down and lters active. The lter frequency is
65 Hz: frequencies below this will be attenuated.
6. SPEAKER LOAD: HIGH Z/LOW Z - a 2-, 4-, 6- or 8-way
DIP switch depending on model; exception is Model
CA2250 which use SW7 and SW8 (CH1/2 Hi-Z/Lo-Z)
of the single 8-pole DIP switch. In the HIGH Z position
(up), the channel’s output stage is congured for driving
70/100 V-line systems. In the LOW Z position (down),
the channels output stage is congured to drive low
impedance speakers (4 or 8 ohms).
7. SPEAKER LOAD: 4Ω/70V / 8Ω/100V – a 2-, 4-, 6- or
8-way DIP switch depending on model; exception is
Model CA2250 which uses SW5 and SW6 (CH1/CH2
4Ω/70v or 8Ω/100V) of the single 8-pole DIP switch. The
function of these switches depend on the setting of the
HIGH Z/LOW Z switch [6]. In high impedance mode, the
switches congure the channel’s output stage for either
70 V-line (up) or 100 V-line (down) operation. In low
impedance mode, the switches congure the channel’s
output stage for either a minimum load of four ohms (up)
or a minimum load of eight ohms (down).
8. AUTO POWER DOWN ON/OFF - set this switch to ON
(down) to enable the amplier’s Automatic Power Down
(APD) function. When enabled, channels will mute after
15 minutes if no input signal is detected; if no signal is
detected for 25 minutes, the channels will enter Standby
Mode. Note that the APD ON/OFF switch uses the rst
pole of the INPUT ROUTING DIP switch bank on Models
CA2500, CA4250, CA6160 and CA8125; on Model CA2250 it
uses SW3 of the single 8-pole DIP switch (APD ON/OFF).
9. REMOTE POWER DOWN – a 2-pin, 5 mm-pitch screw-
terminal connector allowing remote control of the
amplier’s Automatic Power Down (APD) function. A
contact closure at this connector will force APD, placing
the amplier in Standby Mode, resulting in low power
consumption. Note that the REMOTE POWER DOWN
input is always operative, i.e., regardless of the setting
of the AUTO POWER DOWN switch
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10. Expansion bay – for retrotting an optional Dante®
input card, Part Nos.: CDI-CA2 (2 channels),
CDI-CA4 (4 channels) or CDI-CA8 (8 channels).
11. AC input – standard IEC receptacle. Use the AC power
cable supplied with the amplier.
12. Ventilation exhausts - these should always be
unobstructed when the amplier is in use.
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Model CA8125 illustrated: Models CA6160, CA4250 and CA2500 differ only in the number of channels and DIP switch sizes
Model CA2250