CH M10 - 1 Introduction; Output Modes; Global Audio Options; Input-Specific Options

1 Introduction
CH products are designed and manufactured in Switzerland by CH Precision Sàrl. We use fully discrete,
fully balanced, fully complementary, ultra-short signal path circuits – but we combine them with sophisticated
software control, monitoring and protection to ensure the highest possible levels of performance, operational
consistency and versatility.
As a result, your M10 offers a number of operational features that are unique and probably unfamiliar.
For that reason it is essential that you fully understand every aspect of the M10’s operation if you are to
enjoy its maximum possible performance.
1.1 Output modes
Stereo mode: Standard stereo conguration, the left channel input is fed to the left amplication channel and
the right channel input is fed to the right amplication channel. A single M10 drives a stereo setup.
Passive bi-amp mode: Both amplication channels are fed from a single input, with independent gain and
local / global feedback ratio; ideal for loudspeakers equipped with two or more independent binding posts,
allowing maximum exibility. Two or more M10 are needed for a stereo setup.
Active bi-amp mode: To be used with an external low-level cross-over between the preamplier and the M10
ampliers. The external crossover splits each channels of the original audio signal into different frequency
sub-bands to be amplied independently to control the different drivers composing each loudspeaker.
This mode allows each M10 to provide two identical amplication channels (like in stereo mode), but with
independent gain and feedback settings. Two or more M10, each equipped with two input boards, are needed
for a stereo setup.
High-current mono mode: A single amplication channel is driven but utilizing the entire power supply,
allowing 1’600 WRMS into a 1Ω load; ideal for low-impedance or reactive loudspeaker loads. Two or more
M10 are needed for a stereo setup.
Bridged mono mode: Bridged operation combining both channels to deliver 1’100 W WRMS into an 8Ω load;
ideal for higher-impedance loudspeaker loads. Two or more M10s are needed for a stereo set up.
1.2 Global audio options
Input type selection (balanced XLR with ultra-short signal path, single-ended RCA or BNC)
Global feedback ratio (0% to 100% in 1% steps)
Amplier gain adjustment, 6dB range in 0.5dB steps
1.3 Input-specic options
Status: active, hidden or bypass
Impedance: high (94kΩ/47kΩ) or low (600Ω/300Ω)
Low pass lter to add noise immunity from source
Absolute phase polarity
M10 User Manual 4