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SR20
Rear panel connections
6
FM 75Ω
1
AM 300Ω
D1
Digital Inputs
D2
Audio In
7
Service Port
D3
MM Phono Rec
Ground
L
R
A1 A2
2
A3 In Out
3 4
Sub Out
5
A
B
Right
Right
8
Left
Left
B
A
9
Designed and engineered in London, England
Topaz SR20 Stereo Receiver
Rated Power Consumption: 500W www.cambridge-audio.com
Power
Off
10
On
Mains Voltage Selector Switch
115V/230V AC~50/60Hz
11
Power AC
12
1
Digital inputs
Toslink and S/P DIF co-axial digital inputs.
Note: To obtain the best results from your system we recommend using only high quality Cambridge Audio interconnects. This will ensure that you hear your system as we designed it. Please ask you dealer for details.
2
Audio inputs
These inputs are suitable for any ‘line level’ source equipment such as the audio outputs of CD players, BD/DVD players, etc.
3
Phono input
This input has a built in phono stage. Record players fitted with Phono
Cartridges of the Moving Magnet (MM) or high output Moving Coil (MC) type (between 2-6mV output and 30-50k load impedance) can be used.
Low output Moving Coil types (<1mV and usually 10-1000 ohm load impedance) cannot be directly connected and will require a matching transformer or head amp. Please consult your dealer for details. The
‘ground’ terminals on both the record player and the SR20 should be connected (where possible) with a ground wire for lowest noise/hum pickup.
4
Rec Out
Connect to the recording input of a tape deck, CD recorder input, etc.
5
Sub-Out
For optional connection to the input socket of an active subwoofer if desired.
6
AM/FM antenna
Tuner aerial connections for picking up radio signals. Refer to the
‘Connections’ section of this manual. For permanent use, outdoor AM/FM aerials are highly recommended.
7
Service port
For servicing use only. Do not connect anything here as it may result in damage.
8
Loudspeaker terminals
Two sets of loudspeaker terminals are available, A (main loudspeaker terminals, top row) and B (secondary switchable loudspeaker terminals, bottom row). Connect the wires from your left channel loudspeaker to the Left positive and negative terminals, and the wires from the right channel loudspeaker to the Right positive and negative terminals.
In each case, the red terminal is the positive output and the black terminal is the negative output.
Care should be taken to ensure no stray strands of wire are shorting speaker outputs together. Please ensure that the loudspeaker terminals have been tightened adequately to provide a good electrical connection.
It is possible for the sound quality to be affected if the screw terminals are loose.
The use of A and B speakers affords you an easy and inexpensive way to create a simple multi-room system.
Note:
When using two pairs of speakers, use speakers with a nominal impedance of 8 ohms.
9
Heat tunnel vent grille
Allows cooling of internal circuitry via the heat tunnel. DO NOT OBSTRUCT!
10
Power On/Off
Switches the unit on and off.
This product has APD (Auto Power Down) function. After inactivity of 30 minutes, the product will automatically switch to Standby.
11
Voltage select switch
For servicing use only.
12
AC power socket
Once all connections are complete, plug the AC power cable into an appropriate mains socket and turn the unit on.
5
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