Distributed Audio: The Proficient M8 amplifier delivers the power and
fidelity needed to distribute music throughout your home. This amplifier
includes the necessary features needed for flexible, reliable custom
installation. Sophisticated design and superior internal components, result in
outstanding sound quality, performance, and long term reliability.
35W x 8Ch High-Current Amp: The Proficient M8 amplifier is
rated at 35 watts x 8 channels (in 8Ω at
20-20kHz with 2-channels driven and 0.07% THD), or 55 watts x 8 channels (in 4Ω
at 20-20kHz with 2-channels driven and 0.1% THD). It provides pure,
Bridgeable: The power output of adjacent amplifier channels
can be combined to provide extra power when needed in certain locations &
applications. This is easily accomplished by flipping a single switch on the
amplifier's rear-panel. Bridged power rating of the amplifier is 110 watts x 4
channels (in 8Ω at 20-20kHz with 2-channels
driven and 0.5% THD)
Binding Posts: The Proficient M8 amplifier is fitted with
gold-plated, binding posts for each channel. The sixteen binding-post terminals will
accept bare-wire (up to 12AWG), pin-connectors, and banana plugs (dual or
single). Us the following chart to determine the proper wire gauge based on
actual overall wire length from the M8 the speaker.
Flexible Input Selection: With selectable Line, Bus, and Aux inputs,
the M8 can simultaneously output multiple audio sources. Each of the amplifier
channels can be assigned a variety of source inputs; a dedicated input can be
assigned to each channel or each channel can be configured to play common
signals from the Bus or Auxiliary inputs. This provides the flexibility needed
in sophisticated custom audio installation.
- Line Inputs: The Line inputs (RCA) allow amplification of up to
eight mono or four stereo sources for discrete playback in multizone
- Bus Input: The Bus input (stereo RCA) can each feed the same
audio source to any of the eight channels allowing optional distribution of
mono and/or stereo sources to multiple rooms.
- Aux Input: The Aux left and right RCA inputs are fed to the
respective left and right output channels for distribution of two mono
sources to up to four rooms each or one stereo source to four rooms.
Controls: The Proficient M8 amplifier offers Channel Input
selection and Channel Level adjustment on the rear-panel.
- Channel Input Switch: Each Eight 4-position switches
allow you to select the input to each channel. These switches allow multiple
audio sources to be connected and played simultaneously. The Line In setting
feeds audio only to its dedicated channel. The Bus L/R setting sets a
channel's input to the source connected to the amplifier's Bus input. The
Aux L/R setting will set a channel's input to the source connected to the
- Channel Level Adjustment: Each channel has its own level
adjustment. This allows the loudness of each speaker to be perfectly matched to
its location and application and balance your system's sound.
Bus Loop: For larger systems, the Bus Loop can be used to connect up to four additional
M8 amplifiers for a total of up to twenty rooms of amplified audio.
Protection Circuitry: Each channel of the amplifier is
individually protected. If the advanced circuitry determines that a channel must
be shut down for protection (a rare occurrence) only the channel affected will
be turned off, while the other channels continue to play. Once conditions return
to normal, the affected channel will be turned back on and operate as normal.
Note: When the Protection LEDs (Red) on front of the
amplifier are lit, it is indicating either a fault in the wiring, the
speaker, or the amplifiers of that particular channel.
Power Modes: There are three ways to turn the amplifier on;
Constant, Trigger, or Audio Sense. This allows the amplifier to operate
seamlessly as part of a sophisticated custom installation. The 3-way power mode
switch is located on the amplifier's rear-panel.
- Constant: Select Constant mode when you wish to
manually turn the amplifier on and off by using the front mounted power
- Trigger: Use Trigger mode if you prefer the amplifier
turn on when it receives voltage (3-30V) from an external source and turn
off once that voltage has stopped. The voltage source must be connected to
the trigger input jack (3.5mm) on back of the amplifier.
- Audio Sense: Audio Sense mode turns on the amplifier
when the amp's main input receives an audio signal. Once the signal stops,
the amplifier waits 3 minutes and then turns itself off.
Trigger Output: A separate output trigger (3.5mm) allows the
amplifier to activate other components via a 12-volt trigger.
Cast Aluminum Front-Panel: The Proficient M8 amplifier features a cast
aluminum front-panel for added rigidity and a great look.
Air Flow Design: The Proficient M8 is designed to run cool under most
normal operating conditions, but may run warm with multiple channels running at
moderate to high output. It is typical for an eight-channel amplifier to
generate certain amount of heat dissipation that need to be properly ventilated.
When installing the M8 a few steps should be taken to assure proper air flow:
- Never block the vent holes on the top or bottom of the M8.
- Never remove the feet on the bottom of the M8.
- Leave at least 2" above and 1" on each side of the M8 for free air flow.
- Whenever possible, provide vent holes in the shelf under the M8 to
increase air flow into the bottom of the unit.
- Leave the back of the cabinet as open as possible for good air
- Place other system component on separate shelves.
- Install fans in cabinets and racks when equipment is generating high
Note: Closed spaces such as equipment cabinets and racks can get hot with
the heat generated by microprocessors and motors in various devices. Providing
proper ventilation for good air flow will help keep the temperature down and
protect not only the M8, but all system components and help preserve their
The amplifier includes a set of rack ears
for rack mounting applications.