63 DIGITAL CENTRE-SURROUND PROCESSOR OWNER'S MANUAL TABLE OF CONTENTS OVERVIEW SYSTEM FEATURES SYSTEM SPECIFICATIONS SP23 OPERATION EMERGENCY BYPASS SP23-10 (OCTAVE EQUALISERS) CARD POSITIONS SP23-30 (1/3 OCTAVE EQUALISERS) CARD POSITIONS SP23 INSTALLATION CONNECTING THE INPUTS TO THE SP23. CONNECTING THE SP23 OUTPUTS. AUTOMATION INTERFACE - 25-PIN D-CONNECTOR CONNECTION DATA SYSTEM ALIGNMENT 1 ­ ALIGNMENT WITH PANASTEREO PROCESSORS 2 ­ ALIGNMENT WITH DOLBY CP55 3 ­ ALIGNMENT WITH DOLBY CP65 4 ­ ALIGNMENT WITH DOLBY CP500 5 ­ ALIGNMENT WITH SMART MOD VI WITH DSP MATRIX 6 ­ ALIGNMENT WITH SMART MOD VI WITH ANALOG MATRIX 7 ­ ALIGNMENT WITH SMART MOD IIC 8 ­ ALIGNMENT WITH ULTRA STEREO JSX1000 3 3 3 4 4 4 4 5 6 7 9 10 11 16 21 26 30 35 39 43 Surround EX is a trademark of Dolby Labs, Inc. PANALOGIC CORPORATION PTY LIMITED Ground floor, 44 Carrington Road Castle Hill, NSW 2154 Australia Phone: 61 2 9894 6655 Fax: 61 2 9894 6935 Email: panalogic@panalogic.com Web: www.panalogic.com PANASTEREO SP23 ­ Operation. PANASTEREO SP23 DIGITAL SURROUND PROCESSOR OVERVIEW The Panastereo SP23 Surround Processor decodes 6.1 channel sound from existing digital 5.1 installations. The SP23 works with any brand of 5.1 digital sound processor is inserted between the left and right surround outputs of the sound processor and the surround amplifiers. The SP23 provides a decoded rear surround channel which can be fed to rear wall surround speakers via a rear surround amplifier. SYSTEM FEATURES · · · · · · · · · · · · · · High performance matrix decoding of centre (rear) surround information. Choice of 10 band octave (SP23-10) or 30 band 1/3 octave (SP23-30) equalisers for all three surround channels. Users with Panastereo processors can re-use the surround equaliser card from the cinema processor in the SP23 to save the cost of duplication. Provides three channel mono surround for stereo analogue soundtracks. Balanced inputs and outputs for hum and buzz free installation. Superb noise and distortion performance. EX decode and input level LED indicators. CSP1200 / CP65 pin compatible 25way D automation connector. Input / output connections via plug-in Phoenix connectors. Power-off bypass and manual bypass facility. Built-in power supply module. 1U standard rack mount chassis with front accessible plug in card modules. Designed and manufactured in Australia. Fully compatible with the Dolby Digital Surround EX(TM) format planned for Star Wars and other films to follow. SYSTEM SPECIFICATIONS Inputs: Ls and Rs inputs, 10k ohm balanced, Max input sensitivity: 220mV. Outputs: Ls, Rs, Csl ,Csr. 100 ohm balanced, Max output level +20dBu. Noise: Typically 78 dB (unweighted) 86dB (A weighted) Distortion (any channel) 1kHz @ Dolby level: 0.03% Dynamic Range: Typically 106dB Dimensions: 430mm (W) x 247mm (D) x 44mm (H) Weight:: 4.2kg 3 PANASTEREO SP23 ­ Operation. SP23 OPERATION The SP23 does not require any operator intervention for normal operation. The unit is automatically controlled by the cinema processor. When a digital format is selected on the cinema processor the SP23 will switch to EX decode mode and the red DECODE-ON indicator will be illuminated. In Digital mode the left and right surround channel information is decoded into three channels, left, right and rear surround. When any other format is selected on the cinema processor, the SP23 will switch to non-EX mode and the yellow DECODE-OFF indicator will be illuminated. In non-EX mode, if the surround channel information is mono (as with optical stereo film soundtracks), the surround signal is equally distributed to all three surround channels. If the surround signal is stereo, the left surround channel contains the left signal, the right surround channel contains the right signal and the rear channel contains both signals. EMERGENCY BYPASS In the event of a failure of the unit, it can be bypassed by pressing the red BYPASS button at the right front of the unit. This button is NOT a power switch but simply allows the left and right surround channels from the processor to be sent directly to the left and right surround power amplifiers. There is no rear surround in bypass mode. SP23-10 (Octave Equalisers) card positions SP23-30 (1/3 Octave Equalisers) card positions 4 PANASTEREO SP23 ­ Installation. SP23 INSTALLATION RACK MOUNTING THE SP23 The SP23 can be mounted anywhere in the sound rack, although it is preferable from a wiring point of view to mount the unit between the sound processor and the amplifiers. Provision should be made for ventilation above the SP23, so avoid mounting the unit directly beneath other equipment that will prevent air circulation at the top of the SP23 chassis. REAR SURROUND SPEAKER AND AMPLIFIER REQUIREMENTS The rear wall surround speakers should be ideally of the same type as the side wall speakers to allow the best match in sound quality between the side and rear wall speakers. The rear wall amplifier and speaker system should have sufficient power handling capability to match that of either side wall system. The number of rear wall speakers will be determined by the width of the auditorium ­ the wider the room the more speakers will be needed. The spacing between each of the rear speakers should be no greater than the spacing between each of the side wall speakers. INSTALLATION IN A TWO LEVEL CINEMA The Panastereo SP23 can be easily adapted to dual level cinemas. Such cinemas, which are usually large older style cinemas, typically have an upstairs balcony and a downstairs stalls area beneath the balcony. For such cinemas, rear wall surround speakers will be required both upstairs and downstairs. In such cases the rear left output can be used to drive the upstairs speakers and the rear right output can be used to drive the downstairs speakers. In the SP23-10 there are separate equalisers for rear left and rear right channels so the upstairs and downstairs rear speaker systems can be separately equalised for optimum results. CONTROL & AUTOMATION CONSIDERATIONS The automation connector on the SP23 is pin compatible with Panastereo CSP1200, Panastereo CSP4200, Dolby CP65 and Dolby CP500 processors. When a standard pin for pin cable is used with any of the above processors, the rear surround decoding will be turned on for any digital or magnetic format and turned off for all other formats. For use with other processors, or if it is desired to alter which formats turn the decoding on or off, it will be necessary to make a custom cable. In this case, reference should be made to the automation pinout table in this manual. 5 PANASTEREO SP23 ­ Installation. CONNECTING THE INPUTS TO THE SP23. SOUND PROCESSOR WITH UNBALANCED OUTPUTS (DOLBY, SMART, ULTRA STEREO) Disconnect the left surround and right surround connections at the sound processor outputs. Use two-core shielded audio cable to connect the left and right surround outputs from the sound processor to the left and right inputs of the SP23. Connect the "+" terminal from each sound processor output to the "+" terminal of each corresponding SP23 input. Connect the ground terminal of each processor output to the "-" terminal of each corresponding SP23 input. Connect the cable shield to the "E" terminal of each SP23 input only. Do not connect the shields at the sound processor. SOUND PROCESSOR WITH BALANCED OUTPUTS (PANASTEREO) Disconnect the left surround and right surround connections at the sound processor outputs. Use two-core shielded audio cable to connect the left and right surround outputs from the sound processor to the left and right inputs of the SP23. Connect the "+" terminal from each sound processor output to the "+" terminal of each corresponding SP23 input. Connect the "-" terminal of each processor output to the "-" terminal of each corresponding SP23 input. Connect the cable shield to the "E" terminal of each SP23 input only. Do not connect the shields at the sound processor. AUTOMATION CABLE The SP23 must be connected to the cinema processor or digital processor automation connector. The SP23 D25 automation connector is pin compatible with Panastereo CSP42000, CSP1200, Dolby CP65 and CP500 processors. A pre-made 25 way ribbon cable is supplied with the SP23 for the above processors. 6 PANASTEREO SP23 ­ Installation. CONNECTING THE SP23 OUTPUTS. AMPLIFIERS WITH UNBALANCED INPUTS Use two-core shielded audio cable to connect the left, right and rear surround outputs from the SP23 to the inputs of the amplifiers. Connect the "+" terminal from each SP23 output to the "+" terminal of each corresponding amplifier input. Connect the ground terminal of each SP23 output to the "-" terminal of each corresponding amplifier input. Connect the cable shield to the "E" terminal of each amplifier input only. Do not connect the shields at the sound processor. AMPLIFIERS WITH BALANCED INPUTS Use two-core shielded audio cable to connect the left, right and rear surround outputs from the SP23 to the inputs of the amplifiers. Connect the "+" terminal from each SP23 output to the "+" terminal of each corresponding amplifier input. Connect the "-" terminal of each SP23 output to the "-" terminal of each corresponding amplifier input. Connect the cable shield to the "E" terminal of each SP23 input only. Do not connect the shields at the amplifier. SP23 Rear Panel 7 PANASTEREO SP23 ­ Installation. SETTING THE EQUALISER MODE JUMPERS The SP23 has three EQUALISER MODE jumpers on the CM126 Power Supply/Control Card. The jumpers are marked LK1 ­ 3 The jumpers are factory set to match the equaliser configuration as shipped from the factory. LK1 ­ Selects the input for the third equaliser slot (the upper middle slot). · · If the SP23 is fitted with 1/3 octave equalisers for the left and right surround channels (left eq in upper left slot, and right eq in upper middle slot) then this jumper should be in the left "RS" position. This ensures that the right surround signal from the matrix is fed to the right surround equaliser If the SP23 is fitted with a stereo octave equaliser for the left and right surround channels (upper left slot), AND a 1/3 octave equaliser is fitted to the upper middle slot AND you wish to use the future L-R output from the SP23 this jumper must be in the right "L-R" position. LK2 ­ Selects octave or third octave equaliser mode for the left and right equalisers. · · If the SP23 is fitted with a stereo octave equaliser for the left and right surround channels (upper left slot), this jumper should be in the left "OCT" position. If the SP23 is fitted with 1/3 octave equalisers for the left and right surround channels (left eq in upper left slot, and right eq in upper middle slot) then this jumper should be in the right "1/3" position. LK3 ­ Selects stereo or mono equaliser mode for the rear surround equaliser. · · · · If the SP23 is fitted with a 1/3 octave equaliser for the rear surround channel (bottom middle slot) this jumper should be in the left "CS" position. (This will feed the output from the equaliser to both left and right rear outputs). If the SP23 is fitted with a stereo octave equaliser for the rear surround channel (bottom middle slot) and you wish to use just the left equaliser for both the left rear and right rear channels, this jumper should be in the left "CS" position. (This will feed the left equaliser output to both the left and right rear outputs). If the SP23 is fitted with a stereo octave equaliser for the rear surround channel (bottom middle slot) and you wish to use separate equalisers for the left rear and right rear channels, this jumper should be in the right "L-R" position. If the future fourth surround channel is used, the right rear output will carry this signal if this jumper is in the right "L-R" position. 8 PANASTEREO SP23 ­ Installation. AUTOMATION INTERFACE - 25-PIN D-CONNECTOR CONNECTION DATA 3LQ1R 63)XQFWLRQV )LOP0RQR6HOHFW )LOP6WHUHR6HOHFW )LOP6WHUHR6U6HOHFW 166HOHFW )LOP'LJLWDO6HOHFW )LOP'LJLWDO6HOHFW 166HOHFW )LOP0DJ$X[6HOHFW '(&2'( 2)) 2)) 2)) 2)) 21 21 2)) 21 &63)XQFWLRQV )LOP0RQR6HOHFW )LOP6WHUHR6HOHFW )LOP6WHUHR6U6HOHFW 166HOHFW )LOP'LJLWDO6HOHFW )LOP'LJLWDO6HOHFW 166HOHFW )LOP0DJ$X[6HOHFW 5HPRWH)DGHU6HOHFW 0XWH6HOHFW 5HPRWH)DGHU5HI9ROWDJH &RPPRQ'LJLWDO*URXQG 5HPRWH)DGHU:LSHU )LOP0RQR,QGLFDWRU )LOP6WHUHR,QGLFDWRU )LOP6WHUHR6U,QGLFDWRU 16,QGLFDWRU )LOP'LJLWDO,QGLFDWRU )LOP'LJLWDO,QGLFDWRU 16,QGLFDWRU )LOP0DJ$X[,QGLFDWRU 5HPRWH)DGH,QGLFDWRU 0XWH,QGLFDWRU $9,QSXW6HOHFW 3URM6HOHFW+ 3/ 3 &RPPRQ'LJLWDO*URXQG SP23 automation connector pins 1-8 should be pulled low (connected to pin 12) to select a format. Pins 1, 2, 3, 4 & 7 select "decode off". Pins 5, 6 & 8 select "decode on". 9 PANASTEREO SP23 ­ Alignment. SYSTEM ALIGNMENT Refer to the appropriate section of the manual for alignment with various sound processors. 1 ­ Panastereo CSP3200, CSP4200, CSP1200 2 - Dolby CP55 3 ­ Dolby CP65 4 - Dolby CP500 5 - Smart MOD 6 with DSP Matrix 6 - Smart MOD 6 with Analog Matrix 7 - Smart MOD IIC 8 ­ Ultra Stereo JSX 1000 10 PANASTEREO SP23 ­ Alignment with PANASTEREO PROCESSORS 1 ­ ALIGNMENT with PANASTEREO PROCESSORS Equipment required: CM218 Pink Noise Card, Real Time Analyser (RTA) 1. SET UP REAL TIME ANALYSER Set up a Real Time Analyser and position the microphones in the auditorium. Turn all four output trimmers on the SP23 anticlockwise until you feel a slight click. Switch the SP23 to bypass mode (Red Bypass button IN). At the rear of the Panastereo processor, switch the Surround Equaliser Bypass switch to the BYPASS position. If necessary remove the surround equaliser card from the processor and place it in the top left slot of the SP23. Remove the CM224 Matrix Decoder card from the CSP sound processor and install the pink noise generator in it's place. Select "Optical Stereo" on sound processor to output pink noise to the auditorium. Set the sound processor volume control to level "7.0" and keep it there for all subsequent adjustments. Check that the SPL levels for all of the channels are correct (85dBC per channel). If not, adjust the output level trimmers on the CM329 or CM349 Audio Output card for a level of 85dBC from each channel. Select the sound processor to DIGITAL format. Check that the red "DECODE-ON" LED is illuminated on the SP23 2. PRE-SET SP23 OUTPUT LEVELS 3. SWITCH SP23 TO BYPASS 4. BYPASS SURROUND EQUALISERS 5. INSTALL PINK NOISE CARD 6. SELECT "OPTICAL STEREO" FORMAT 7. SET PROCESSOR VOLUME TO "7.0" 8. CHECK SPL LEVELS ON ALL CHANNELS 9. SELECT "DIGITAL" FORMAT 11 PANASTEREO SP23 ­ Alignment with PANASTEREO PROCESSORS 10. REMOVE AUTOMATION CONNECTION Disconnect the D25 automation cable from the SP23. (This is to prevent the sound processor from switching the SP23 back to Optical mode) Select the sound processor to OPTICAL STEREO (to send pink noise to the outputs). Switch the SP23 out of bypass mode (Red Bypass button OUT). Switch on the Left Surround button on the Pink Noise card. Adjust the Left Input trimmer on the SP23 so that the two green LEDs for the left channel are equally illuminated. Adjust the Left Surround Output trimmer on the SP23 for approximately 85dBC in the auditorium. Remove the Left/Right Equaliser card from the SP23 and connect it via the extender card and cable. Adjust the left equaliser controls for a frequency response in accordance with the standard ISO surround channel response curve. Re-adjust the Left Surround Output trimmer on the SP23 for 85dBC in the auditorium. Switch off the Left Surround button and press the Right Surround button on the Pink Noise Card. Adjust the Right Input trimmer on the SP23 so that the two green LEDs for the right channel are equally illuminated. Adjust the Right Surround Output trimmer on the SP23 for approximately 85dBC in the auditorium. 11. SELECT "OPTICAL STEREO" FORMAT 12. TURN OFF SP23 BYPASS 13. SET PINK NOISE CARD TO LS 14. ADJUST SP23 LS INPUT LEVEL 15. COARSE SET LS SPL LEVEL TO 85dBC 16. EQUALISE LEFT SURROUND CHANNEL 17. SET LS SPL LEVEL TO 85dBC 18. SELECT RIGHT SURROUND ON THE PINK NOISE CARD 19. ADJUST SP23 RIGHT SURROUND INPUT LEVEL 20. COARSE SET RIGHT SURROUND SPL LEVEL TO 85dBC 12 PANASTEREO SP23 ­ Alignment with PANASTEREO PROCESSORS 21. EQUALISE RIGHT SURROUND CHANNEL Adjust the right equaliser controls for a frequency response in accordance with the standard ISO surround channel response curve. Re-adjust the Right Surround Output trimmer on the SP23 for 85dBC in the auditorium. Switch on both left and right surround on the Pink Noise Card 22. SET RIGHT SURROUND SPL LEVEL TO 85dBC 23. SELECT BOTH LS AND RS ON PINK NOISE CARD 24. IF A TWO CHANNEL REAR SURROUND AMPLIFIER IS INSTALLED GOTO 31 25. COARSE SET LEFT REAR SURROUND SPL LEVEL to 85dBC Adjust the Rear Left Surround Output trimmer (CSL) for approximately 85dBC SPL in the auditorium. Remove the Rear Equaliser from the SP23 and connect it via the extender card and cable. Adjust the left equaliser controls for a frequency response in accordance with the standard ISO surround channel response curve. Replace the Rear Equaliser card and adjust the Rear Left Surround Output trimmer (CSL) on the SP23 for 91dBC in the auditorium. Re-connect the automation cable to the SP23. Remove the pink noise card from the processor and replace with the CM224 matrix card. The system is now ready to use. 26. EQUALISE REAR SURROUND CHANNEL 27. SET REAR SURROUND SPL LEVEL TO 91dBC 28. RE-CONNECT AUTOMATION CABLE 29. REMOVE PINK NOISE CARD 30. END OF PROCEDURE 31. ALIGNMENT OF TWO CHANNEL REAR SURROUND AMPLIFIER 13 PANASTEREO SP23 ­ Alignment with PANASTEREO PROCESSORS 32. TURN OFF REAR RIGHT AMPLIFIER Switch off or disconnect the rear rightsurround amplifier. Adjust the Rear Left Surround Output trimmer (CSL) for approximately 85dBC SPL in the auditorium. Remove the Rear Equaliser from the SP23 and connect it via the extender card and cable. Adjust the left equaliser controls for a frequency response in accordance with the standard ISO surround channel response curve. Adjust the Rear Left Surround Output trimmer (CSL) on the SP23 for 88dBC in the auditorium. Switch off or disconnect the rear left-surround amplifier and switch on or connect the rear right surround amplifier. Adjust the Rear Right Surround Output trimmer (CSR) for approximately 85dBC SPL in the auditorium. Adjust the right equaliser controls for a frequency response in accordance with the standard ISO surround channel response curve. Replace the Rear Equaliser card and adjust the Rear Right Surround Output trimmer (CSR) on the SP23 for 88dBC in the auditorium. Switch on or re-connect the rear left surround amplifier. Re-connect the automation cable to the SP23. Remove the pink noise card from the processor and replace with the CM224 matrix card. 14 33. COARSE SET REAR LEFT SURROUND SPL LEVEL to 85dBC 34. EQUALISE REAR LEFT SURROUND CHANNEL 35. SET REAR LEFT SURROUND SPL LEVEL TO 88dBC 36. TURN OFF LEFT REAR AMPLIFIER AND TURN ON RIGHT REAR AMPLIFIER 37. COARSE SET RIGHT REAR SURROUND SPL LEVEL to 85dBC 38. EQUALISE REAR RIGHT SURROUND CHANNEL 39. SET REAR RIGHT SURROUND SPL LEVEL TO 88dBC 40. TURN ON REAR LEFT AMPLIFIER 41. RE-CONNECT AUTOMATION CABLE 42. REMOVE PINK NOISE CARD PANASTEREO SP23 ­ Alignment with PANASTEREO PROCESSORS 43. END OF PROCEDURE The system is now ready to use. 15 PANASTEREO SP23 ­ Alignment with DOLBY CP55 2 ­ ALIGNMENT with DOLBY CP55 Equipment required: Dolby Cat.85C Pink Noise Card, Real Time Analyser (RTA) 1. SET UP REAL TIME ANALYSER Set up a Real Time Analyser and position the microphones in the auditorium. Turn all four output trimmers on the SP23 anticlockwise until you feel a slight click. Switch the SP23 to bypass mode (Red Bypass button IN). On the CP55 Cat.441 card, turn the Treble and Bass controls for both the Ls and Rs channels to the middle of their rotation. Turn the midrange cut control for both Ls and Rs channels fully clockwise Remove the Cat.150 Decoder card from the CP55 sound processor and install the Cat.85C pink noise generator into the slot provided. Select "Optical Stereo" on sound processor to output pink noise to the auditorium. Set the sound processor volume control to level "7" and keep it there for all subsequent adjustments. Check that the SPL levels for all of the channels are correct (85dBC per channel). If necessary, adjust the L, C and R, output level trimmers on the Cat.242 B-chain card and/or the Ls & Rs trimmers on the Cat.441 card for a level of 85dBC from each channel. Select the sound processor to DIGITAL format. Check that the red "DECODE-ON" LED is illuminated on the SP23 2. PRE-SET SP23 OUTPUT LEVELS 3. SWITCH SP23 TO BYPASS 4. SET THE CP55 SURROUND EQUALISERS TO FLAT 5. INSTALL PINK NOISE CARD 6. SELECT "OPTICAL STEREO" FORMAT 7. SET PROCESSOR VOLUME TO "7" 8. CHECK SPL LEVELS ON ALL CHANNELS 9. SELECT "DIGITAL" FORMAT 16 PANASTEREO SP23 ­ Alignment with DOLBY CP55 10. REMOVE AUTOMATION CONNECTION Disconnect the D25 automation cable from the SP23. (This is to prevent the sound processor from switching the SP23 back to Optical mode) Select the sound processor to OPTICAL STEREO (to send pink noise to the outputs). Switch the SP23 out of bypass mode (Red Bypass button OUT). Turn on the Surround switch on the Cat.85C Pink Noise card. Adjust the Left Input trimmer on the SP23 so that the two green LEDs for the left channel are equally illuminated. Adjust the Right Input trimmer on the SP23 so that the two green LEDs for the right channel are equally illuminated. On the SP23 press the left channel MUTE button. Adjust the Left Surround Output trimmer on the SP23 for approximately 85dBC in the auditorium. Remove the Left/Right Equaliser card from the SP23 and connect it via the extender card and cable. Adjust the left equaliser controls for a frequency response in accordance with the standard ISO surround channel response curve. Re-adjust the Left Surround Output trimmer on the SP23 for 85dBC in the auditorium. On the SP23 release the right channel MUTE button and press the left channel MUTE button. 11. SELECT "OPTICAL STEREO" FORMAT 12. TURN OFF SP23 BYPASS 13. SELECT "SURROUND" ON THE PINK NOISE CARD 14. ADJUST SP23 INPUT LEVELS 15. MUTE THE SP23 RIGHT INPUT 16. COARSE SET LS SPL LEVEL TO 85dBc 17. EQUALISE LEFT SURROUND CHANNEL 18. SET LS SPL LEVEL TO 85dBC 19. UNMUTE THE SP23 RIGHT INPUT AND MUTE THE LEFT INPUT. 17 PANASTEREO SP23 ­ Alignment with DOLBY CP55 20. COARSE SET RIGHT SURROUND SPL LEVEL TO 85dBC Adjust the Right Surround Output trimmer on the SP23 for approximately 85dBC in the auditorium. Adjust the right equaliser controls for a frequency response in accordance with the standard ISO surround channel response curve. Re-adjust the Right Surround Output trimmer on the SP23 for 85dBC in the auditorium. On the SP23, release the left channel mute button. 21. EQUALISE RIGHT SURROUND CHANNEL 22. SET RIGHT SURROUND SPL LEVEL TO 85dBC 23. UNMUTE THE LEFT CHANNEL 24. IF A TWO CHANNEL REAR SURROUND AMPLIFIER IS INSTALLED GOTO 31 25. COARSE SET LEFT REAR SURROUND SPL LEVEL to 85dBC Adjust the Rear Left Surround Output trimmer (CSL) for approximately 85dBC SPL in the auditorium. Remove the Rear Equaliser from the SP23 and connect it via the extender card and cable. Adjust the left equaliser controls for a frequency response in accordance with the standard ISO surround channel response curve. Replace the Rear Equaliser card and adjust the Rear Left Surround Output trimmer (CSL) on the SP23 for 91dBC in the auditorium. Re-connect the automation cable to the SP23. Remove the pink noise card from the processor and replace the CAT.150 decoder card. The system is now ready to use. 26. EQUALISE REAR SURROUND CHANNEL 27. SET REAR SURROUND SPL LEVEL TO 91dBC 28. RE-CONNECT AUTOMATION CABLE 29. REMOVE PINK NOISE CARD 30. END OF PROCEDURE 18 PANASTEREO SP23 ­ Alignment with DOLBY CP55 31. ALIGNMENT OF TWO CHANNEL REAR SURROUND AMPLIFIER 32. TURN OFF REAR RIGHT AMPLIFIER Switch off or disconnect the rear rightsurround amplifier. Adjust the Rear Left Surround Output trimmer (CSL) for approximately 85dBC SPL in the auditorium. Remove the Rear Equaliser from the SP23 and connect it via the extender card and cable. Adjust the left equaliser controls for a frequency response in accordance with the standard ISO surround channel response curve. Adjust the Rear Left Surround Output trimmer (CSL) on the SP23 for 88dBC in the auditorium. Switch off or disconnect the rear left-surround amplifier and switch on or connect the rear right surround amplifier. Adjust the Rear Right Surround Output trimmer (CSR) for approximately 85dBC SPL in the auditorium. Adjust the right equaliser controls for a frequency response in accordance with the standard ISO surround channel response curve. Replace the Rear Equaliser card and adjust the Rear Right Surround Output trimmer (CSR) on the SP23 for 88dBC in the auditorium. Switch on or re-connect the rear left surround amplifier. Re-connect the automation cable to the SP23. 33. COARSE SET REAR LEFT SURROUND SPL LEVEL to 85dBC 34. EQUALISE REAR LEFT SURROUND CHANNEL 35. SET REAR LEFT SURROUND SPL LEVEL TO 88dBC 36. TURN OFF LEFT REAR AMPLIFIER AND TURN ON RIGHT REAR AMPLIFIER 37. COARSE SET RIGHT REAR SURROUND SPL LEVEL to 85dBC 38. EQUALISE REAR RIGHT SURROUND CHANNEL 39. SET REAR RIGHT SURROUND SPL LEVEL TO 88dBC 40. TURN ON REAR LEFT AMPLIFIER 41. RE-CONNECT AUTOMATION CABLE 19 PANASTEREO SP23 ­ Alignment with DOLBY CP55 42. REMOVE PINK NOISE CARD Remove the pink noise card from the processor and replace the Cat.150 decoder card. The system is now ready to use. 43. END OF PROCEDURE 20