CM-80/80E INSTRUCTION MANUAL ULTRA
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STEREO LABS, INC.
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1. AC Input
2. Line Voltage Selector
3. Main Fuse - 1/2 Amp for the CM-35 (1Amp for the CM-35E with single fuse and line switch).
4. Line Out - The Left, Center and Right channel signals are summed from processors and fed to this RCA jack.
Output level: nominal 100mv.
5. Amplifier Outputs - The amplifier outputs may be connected through a standard 50 conductor flat cable and
connector to J2. The pin assignments are as follows: 1. Lo left; 3. Mid left; 5. Hi left; 7. Lo center; 9. Mid center;
11. Hi center; 13. Lo right; 15. Mid right; 17. Hi right; 19. Left surr. +; 21. Left surr. -; 23. RIght surr. +; 25. Right
surr. -; 27. Subwoofer +; 29. Subwoofer -; 31-37 GND.; 39. Lo Left center; 41. Mid Left center; 43. Hi Left center;
45. Lo Right center; 47. Mid Right center; 49. Hi Right center.
6. Amplifier Outputs - connect these terminals to the power amplifier speaker outputs corresponding to Left, Center,
Right, Left and Right Surrounds, and Subwoofer. Left, Center and Right channels have high and low frequency
inputs for use with bi-amplified systems.
7. Processor Outputs - The processor outputs may be connected through a 25 pin "D" connector to J1. The pin
assignments are as follows: 2. Left +; 3. Left center -; 5. Center +; 6. Right center -; 8. Right +; 10. Surr. Left -; 11.
Surr. Right -; 12. Subwoofer -; 14. Left -; 16. Left center +; 17. Center-; 19. Right center+; 20. Right -; 23. Surr.
Left +; 24. Surr. Right +; 25. Subwoofer +.
8. Processor Outputs - connect these terminals to the cinema processor outputs corresponding to left, center, right,
left and right surrounds, and subwoofer.
9. Monitor Amp Out/Internal Speaker In - the Monitor Amp Output is linked to the Internal Speaker here. To
connect an external speaker, remove this link and connect the + and – terminals to the external speaker + and
– inputs. WARNING: Do not connect any device here with less than 8Ω impedance.
10. Processor Level - this trimpot adjusts the level of the input lines coming from the processor.
11. Amplifier Level - this trimpot adjusts the level of the input lines coming from the power amplifiers.
12. Bargraph Level - this trimpot adjusts the sensitivity of the front panel VU Bargraph meter.
