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ATC Electronics CA2 User's Operating Manual
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ATC Electronics CA2 User's Operating Manual

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A T C
E l e c t r o n i c s
U s e r
O p e r a t i n g
M a n u a l
A C O U S T I C
E N G I N E E R S

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Summary of Contents for ATC Electronics CA2

  • Page 1 A T C E l e c t r o n i c s U s e r O p e r a t i n g M a n u a l A C O U S T I C E N G I N E E R S...
  • Page 2 9. Power cord protection – power supply cords should be routed so Section G6 Warranty and Contact that they are not likely to be walked on or pinched by items placed Page 3 CA2 Preamplifier Section 1.1 Description upon or against them, paying particular attention to cords at Section 1.2...
  • Page 3 G 2 M a i n s C o n n e c t i o n engineering is available from the recording desk or CD player output to the ears. The CA2 and SCA2 Preamplifiers can be used with From modest beginnings ATC has grown to become one of the very few mains voltages from 100V to 240V, 50/60Hz.
  • Page 4 If you intend The CA2, SIA2-150, P1 and P2 are supplied with the ATC remote handset. This provides for remote operation of all functions of the units, and includes a to use your unit in an alternative territory, please contact ATC for advise.
  • Page 5 The phono amplifier stage carries an array of slide switches that enable optimal matching to phono cartridges of various output voltages and load requirements. Selection of CA2 inputs is achieved via a five position rotary control using gold plated relays for silent switching. Output volume adjustment is achieved through a precision motorized potentiometer.
  • Page 6 P r e a m p l i f i e r The phono amplifier can be configured to accommodate a wide selection of phono cartridge types by setting combinations of the board mounted jumpers (links). Access to the phono stage is gained by removing the cover of the preamplifier.
  • Page 7 Once connected to mains power and powered up from the rear panel mains switch, the front panel Standby button (or remote handset Standby button) will switch the CA2 between standby and active mode. In Standby mode the Standby Indicator glows RED. Operating the Standby function from either the front panel or the remote handset will switch the CA2 into active mode.

  • Page 8: Total Harmonic Distortion

    See Table A equipment, or while changing the input selection. R.I.A.A. Accuracy (20Hz – 20kHz): ±0.5dB Unity gain though the CA2 from any of the line Input Impedance: 5k Ohms level inputs is indicated by the ‘0dB’ print on the...
  • Page 9 SCA2 P r e a m p l i f i e r 2 . 1 D e s c r i p t i o n The SCA2 is an extremely high resolution preamplifier designed to partner ATC active, and, with an appropriate power amplifier, passive loudspeaker systems. It incorporates eight line-level stereo inputs, two stereo signal outputs and two stereo record outputs.
  • Page 10 SCA2 P r e a m p l i f i e r Diagram 1 - SCA2 rear panel and connection sockets Table A - Input Sockets Input socket types and legends Rear Panel Front Panel Input Notes Legend Legend Type balanced input cd cd bal...
  • Page 11 SCA2 P r e a m p l i f i e r amplifier (or active speakers). Use the balanced Table B - RIAA Board Gain Stage Link Setting option in preference if both options are possible. Mid point gain stage set LOW (11dB) Link Z1 to Connections to the primary output XLR sockets follow the convention of pin 1 to ground, pin 2 to...
  • Page 12 SCA2 P r e a m p l i f i e r Diagram 6 - SCA2 front panel and controls 2 . 4 O p e r a t i o n Optimum sound quality will be achieved when the SCA2 has reached normal operating temperature and for this reason it is recommended that it be left in Once connected to mains power and powered-up standby mode when not in use.
  • Page 13 SCA2 P r e a m p l i f i e r 2 . 5 S p e c i f i c a t i o n s MAIN OUTPUTS Maximum Output Level 8.5V RMS into 600 Ohms balanced 17.5V RMS into 600 Ohms unbalanced Input Sensitivity (for 1V Output) 230mV...
  • Page 14 P1 & P2 P o w e r A m p l i f i e r s 3 . 1 D e s c r i p t i o n The amplifier mains power is turned on by a switch on the rear panel. There is a Green L.E.D.
  • Page 15 P1 & P2 P o w e r A m p l i f i e r s 3 . 4 O p e r a t i o n The amplifier can be brought out of Standby by pressing the Standby push button on the remote control.
  • Page 16 P1 & P2 P o w e r A m p l i f i e r s 3 . 5 S p e c i f i c a t i o n s Power Output >300W into 8 Ohms >150W into 8 Ohms (1% Distortion, 1kHz, Both channels driven, Continuous average)
  • Page 17 SIA2-150 I n t e g r a t e d A m p l i f i e r 4 . 3 O u t p u t s 4 . 1 D e s c r i p t i o n The SIA2-150 rear panel, illustrated in diagram The SIA2-150 is a high quality integrated amplifier designed to partner ATC passive carries...
  • Page 18 CA2 into active mode. The RED indicator will Due to the nature of the electronics in ATC amplifiers it is quite normal for a sound extinguish and be replaced by the Input select to be heard from the speaker when the power is applied or disconnected.

  • Page 19: Power Output

    SIA2-150 S p e c i f i c a t i o n s 4 . 5 S p e c i f i c a t i o n s Power Output >150 Watts (1% Distortion, 1kHz, Both channels driven, Continuous average) Frequency Response <2Hz –...
  • Page 20 A C O U S T I C E N G I N E E R S Loudspeaker Technology Ltd Gypsy Lane, Aston Down, Stroud, Gloucestershire GL6 8HR United Kingdom Telephone 01285 760561 Fax 01285 760683 Email: info@atc.gb.net Web: www.atcloudspeakers.co.uk Acoustic Transducer Company is the trading name and ATC is the registered trade mark of Loudspeaker Technology Ltd.

This manual is also suitable for:

Sca2