CH M1.1, Руководство пользователя

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1 Technical highlights
CH products are proudly designed and manufactured in Switzerland by CH Precision Sàrl. Our engineers put together all their
know-how, expertise and ingeniousness to bring you the M1.1, a top performance future-proof modular two output channels
power amplifier with USB flash-drive firmware update and Ethernet control capabilities. Like all CH Precision products, the M1.1is
highly versatile: up to 5 setups are possible: stereo mode (one M1.1 driving a pair of loudspeakers), monaural mode (the power
transformer of the M1.1is dedicated to one loudspeaker, only one output board is used), bridge mode (to nearly four times the
available power), passive bi-amplification (each channel powers a specific loudspeaker driver or group of drivers) or active bi-
amping (an active loudspeaker crossover is to be inserted between the preamplifier and the pair of M1.1s)
For increased flexibility, the M1.1 also provides two unique features: global/local feedback ratio and gain adjustments. The
amount of global feedback in the amplifying loop of each channel can be adjusted to best match virtually any loudspeaker on the
market. The amplifier gain can also be adjusted over a 24 dB wide range in 0.5 dB steps. This greatly helps matching the output
level of the preamplifier, the efficiency of the connected loudspeakers and the listening room. Three standard input connectors are
available (balanced XLR, single-ended RCA and BNC). Unbalanced inputs can be configured as high-impedance input, or a 300
Ohm load can be engaged to help reduce signal reflections as well as to improve external noise immunity, therefore improving the
overall signal transmission. A pass-through XLR line-level output is also provided to daisy-chain multiple M1.1 and A1.5 amplifiers.
M1.1 main components
Rev 3.0 M1.1 User Manual 7
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