CH M1.1, Руководство пользователя

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1.2.2 Temperature monitoring
The DSPs also monitor both the power transistors and the heatsink temperatures. If the temperature becomes excessive, the M1.1
will protect itself by entering standby mode.
1.3 Careful construction
The M1.1 power amplifier chassis is made of high grade aluminum alloy and steel elements with no visible screws on the front, top
and side panels. The front panel, side panels and top cover are machined from aluminum, while the base plate is machined from
solid steel, ensuring optimal mechanical reference and magnetic shielding. First class mechanical and chemical surface treatments
provide the luxury finish of the M1.1.
Pin assembly of all chassis elements enables smooth joints between metal parts while screws every 6cm ensure protection against
electromagnetic interferences.
Four stainless steel feet support the unit. Each foot ends with an elastomer ring to sit on delicate surfaces but is also equipped with
height adjustable hardened steel spikes to fine tune the unit position. Horizontal leveling is accomplished using the provided
screwdriver through the four adjustment shafts accessible from the top of the unit. Moreover, the steel spikes serve as vibration
evacuation channels for stacked units. Special covers are provided to interface with the spikes of the unit above. Any vibration
from the upper unit is transmitted by the shaft cover to the shaft of the lower unit and from there to the lower unit's feet or
spikes, forming a privileged path for vibrations evacuation.
The area where the air flows to cool down the amplifier is hermetically sealed from the rest of the M1.1, ensuring the electronic
circuitry is protected from gradually gathering dust.
1.4 Modular architecture and slot-in boards
The M1.1 benefits from a fully modular architecture. It features separated sections for power rails, analog and digital power
supplies, front panel, signal routing and central host processor, monaural analog input boards and single channel amplification
boards. This modular architecture combined with the USB plug for firmware update allows for easy servicing and upgrade should
one section become faulty or obsolete.
The slot-in boards section consists in a vertically mounted mother board with optional boards plugged into it. Optional boards
provide audio functionality and connectivity to other equipment. There are two types of slot-in boards:
•
ANALOG_IN: provides mono single-ended RCA and BNC (both configurable as either high impedance or 300 Ohm
terminated) and balanced XLR analog audio input. One (left or right) or two (left and right) such boards can be fitted
into the M1.1. By default, the M1.1 is factory delivered with a single ANALOG_IN board.
•
CONTROL: provides a USB port for software upgrade and an Ethernet port for command. The CONTROL board is factory
mounted in each M1.1.
There are three slots in the M1.1. Two of them can be populated with a left ANALOG_IN and/or a right ANALOG_IN board. The
last slot is dedicated to the CONTROL board. Note that optional boards MUST be installed by a qualified technician. Failure to do so
will void any warranty.
10 M1.1 User Manual Rev 3.0