Audio Systems M8 35W x 8 Channel Power Amplifier Installation & User Guide
SAFETY INSTRUCTIONS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: To reduce the risk of electric shock, do not remove cover, (or back). No user serviceable parts inside. Refer servicing to qualified service personnel. The lightning flash with arrowhead symbol, when in an equilateral triangle, is intended to alert the user to the presence of in-insulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
TABLE OF CONTENTS SAFETY INSTRUCTIONS ............................................................................................................................................................ 2 TABLE OF CONTENTS ................................................................................................................................................................. 3 INTRODUCTION ........................................................................................................................
INTRODUCTION Congratulations and thank you for purchasing the Proficient Audio M8 Eight Channel Power Amplifier. The M8 combines the best of styling and performance in a truly versatile amplifier that can handle just about any multiroom audio application. With selectable Line, BUS and AUX inputs, the M8 can simultaneously output multiple audio sources. Each channel features a Channel Input switch that selects the audio input to that channel.
M8 FEATURES WHAT’S INCLUDED 1 - M8 Eight Channel Audio Amplifier 1 - Power Cord 1 - M8 Installation & User Guide M8 M8 FEATURES Amplifier 35W Continuous @ 8Ω; 20Hz - 20kHz; <0.07% THD (2 Channels driven into 8 ohms - remainder at 1/8 of rated power) 55W Continuous @ 4Ω; 20Hz - 20kHz; <0.1% THD (2 Channels driven - remainder un-driven) 110W Continuous @ 8Ω; 20Hz - 20kHz <0.
M8 FRONT PANEL FEATURES M8 1 2 Diagram 1 M8 Front Panel Features FRONT PANEL 1. ON/OFF - Press this button to turn the M8 ON/OFF. (Rear Panel Power Mode switch set to ON.) When OFF, the button backlight is OFF. To turn the unit ON, press the button. The ON/OFF button backlight and all eight Front Panel LEDs will illuminate blue.
M8 REAR PANEL FEATURES 9 3 4 5 14 6 13 7 8 10 12 11 Diagram 2 M8 Rear Panel Features REAR PANEL 3. AUX IN - (Two assignable RCA jacks) Connect to the line level audio output of an audio source to be fed to M8 channels switched to AUX L or AUX R on the Rear Panel. A mono source connected to the Left or Right AUX IN will be fed to any channel with the Channel Input switch set to AUX L (channels 1, 3, 5, 7) or AUX R (channels 2, 4, 6, 8).
M8 REAR PANEL FEATURES 9. CHANNEL INPUT SWITCH - (Eight, four-position switches) Set these switches to select the input to each channel. These switches allow multiple audio sources to be connected and played simultaneously. LINE IN feeds audio only to it’s dedicated channel. BUS L/BUS R will set a channel’s input to the source connected to BUS IN Left or Right. AUX L/AUX R will set a channel’s input to the source connected to AUX IN Left/Right.
INSTALLATION 2 INCH MINIMUM FOR PROPER AIR FLOW TO MAINTAIN PROPER AIR FLOW, PLACE OTHER COMPONENTS ON SEPARATE SHELVES ALWAYS KEEP TOP AND BOTTOM VENTS CLEAR 1 INCH MIN FOR PROPER AIR FLOW 1 INCH MIN FOR PROPER AIR FLOW M8 VENT HOLES IN SHELF IMPROVE AIR FLOW Diagram 3 M8 Air Flow Requirements AIR FLOW 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.
INSTALLATION Video Display Front Left Front Right A A=B=C B C Ideal Listening Zone Diagram 4 Speaker Placement SPEAKER PLACEMENT Use the following recommendations when determining speaker placement. Determine The Ideal Listening Zone The area where the user will most likely be sitting when listening to the speakers is the Ideal Listening Zone.
INSTALLATION WIRE REQUIREMENTS Use the following recommendations for speaker wire runs. Speaker Wire (Multiroom) A volume control will typically be required to control individual room volume when the M8 is used in a multiroom application, (single source system using the BUS IN or AUX IN to feed multiple rooms). The individual channel level controls can be used to set individual channel levels or set maximum room volume at the amp, but do not allow volume control in the remote room.
SPEAKER CONNECTIONS NORMAL MODE SPEAKER CONNECTIONS Channel 1/2 Bridged Switch The M8 amplifier channels can be configured for normal power output (35W/ch) (Diagrams 6/7) or high powered (Bridged 70W/ch) output (Diagrams 8/9). Normal power is appropriate for most multiroom and multizone audio applications. Bridged mode should be used for covering large areas or with high powered speakers when additional power is required.
SPEAKER CONNECTIONS BRIDGED MODE SPEAKER CONNECTIONS Channel 5/6 Bridged Switch Bridged mode should be used for covering large areas or with high powered speakers when additional power is required. When using the M8 in bridged, (high power) mode, follow the connection instructions in this section. For normal power mode, see section: Normal Mode Speaker Connections.
CONNECTIONS & SETUP AUDIO CONNECTIONS Audio Source The M8 has three audio inputs: Line IN, BUS IN and AUX IN. The assignment of these inputs provides a wide range of design flexibility for almost any multiroom or multizone audio application. Note: All examples are stereo unless otherwise noted. Stereo RCA-RCA Patch Cable Line OUT Line IN (Diagram 10) Eight, line level audio inputs allow direct channel connection of up to eight mono sources or four stereo sources.
CONNECTIONS & SETUP 3. Set the Bridged switches for the channels used in Steps 2-3 to OFF. 4. Connect the speakers that are to play the source(s) connected to BUS IN to the Speaker terminals with the same numbers as the channels used in Steps 2-3. Use the Normal Mode configuration as described in section: Normal Mode Speaker Connections. BUS IN (Stereo) 1. Using a stereo RCA patch cable with gold ends, connect the L & R line level audio OUT of an audio source to the BUS IN Left and Right inputs on the M8.
CONNECTIONS & SETUP AUX IN (Stereo) 1. Using a stereo RCA patch cable with gold ends, connect the L & R line level audio OUT of an audio source to the AUX IN Left and Right inputs on the M8. Audio Source 2. Set the Channel Input switches for the channels that are to output the stereo source connected to AUX IN to AUX L and AUX R. Set the switches for stereo channel pair (1/2, 3/4, 5/6, 7/8) as AUX L (1, 3, 5, 7) and AUX R (2, 4, 6, 8). Line OUT Stereo RCA-RCA Patch Cable Left Channel from Source 3.
CONNECTIONS & SETUP POWER ON/OFF MODES Power Mode Switch set to ON The M8 can be configured for three power ON/OFF Modes: Manual, Audio Sensing and AC/DC Voltage Trigger. Set the Power Mode switch to the preferred mode and connect the Trigger IN if using the voltage trigger mode. Manual Power Manual power mode requires pressing the ON/OFF switch on the Front Panel to turn the M8 ON/OFF. One press of the button will turn all eight amplifier channels ON. Another press will turn the amplifier OFF. 1.
CONNECTIONS & SETUP Control Out The M8 features a 12VDC Control Out that can be used to sync an external device with a 12VDC Control IN to M8 power ON/OFF status. When the M8 turns ON (Manual, Audio Sense or Trigger) the Control Out will output 12VDC. When the M8 turns OFF (Manual, Audio Sense or Trigger) the Control Out will output 0VDC. 1. Using a 3.5mm mini cable, connect the M8 Control Out to the Control IN on the device that is to synced to M8 power status as shown in Diagram 17.
CONNECTIONS & SETUP LEVEL CONTROL Left Channel The Level Controls on the M8 allow adjusting the audio level of each channel. The adjustments can be made as mono channels, normal stereo pair or bridged pair. Channel Level Controls Right Channel M8 The Level Controls can be used to balance overall system levels so audio is consistent from room to room.
SYSTEM APPLICATIONS CD PLAYER DVD PLAYER DVD PLAYER CD PLAYER LINE LEVEL OUT L DIGITAL AUDIO OUT R LINE LEVEL OUT OPTICAL COAXIAL L R V S VIDEO OUT DIGITAL AUDIO OUT COMPONENT VIDEO OUT OPTICAL COAXIAL Y Pb Pr To Unswitched 110V AC Outlet PROFICIENT M40 A/V RECEIVER Stereo RCA-RCA Patch Cables A/V Receiver Pre-OUT M8 BUS LOOP A/V Receiver Main IN M8 BUS IN Set all Bridged Switches to OFF Set Odd # BUS Channel Input Switches to BUS L Even # Channels to BUS R M8 16AWG (min) 2-Conduct
SYSTEM APPLICATIONS SYSTEM APPLICATIONS The M8 is a versatile multichannel amplifier that can be used in a variety of applications. The following pages will provide three M8 system examples: multiroom, home theater with a second zone and mixed use in a multizone system. These are by no means the only uses for this versatile piece. The M8 can be used for just about any application where multiple audio channels are required.
SYSTEM APPLICATIONS BLU-RAY PLAYER CD PLAYER BLU-RAY PLAYER CD PLAYER LINE LEVEL OUT L R V S VIDEO OUT DIGITAL AUDIO OUT OPTICAL COAXIAL LINE LEVEL OUT COMPONENT VIDEO OUT Y Pb Line Level Audio/ Composite Video OUT L Pr DIGITAL AUDIO OUT R OPTICAL COAXIAL Line Level Audio OUT HDMI OUT Digital Optical Audio OUT PROFICIENT M80 2 ZONE A/V SURROUND RECEIVER To Unswitched 110V AC Outlet Zone 2 OUT Stereo RCA-RCA Patch Cable M8 BUS IN Set all Bridged Switches to OFF Set Odd # BUS Channel
SYSTEM APPLICATIONS Home Theater Plus Second Zone The multizone system shown in Diagram 22 features the M8 when used to add multiple rooms of amplified audio to the Zone 2 OUT on an A/V Receiver, (in this case a Proficient M80). This system is a two zone system, meaning two different sources can be played at the same time. The home theater is Zone 1 and can select any source connected to the M80. The M80 features a Zone 2 OUT that can output line level audio and composite or S-Video.
SYSTEM APPLICATIONS CD PLAYER MUSIC SERVER CD PLAYER MUSIC SERVER LINE LEVEL OUT L LINE LEVEL OUT DIGITAL AUDIO OUT R L OPTICAL COAXIAL DIGITAL AUDIO OUT R OPTICAL COAXIAL PROFICIENT M4 FOUR ROOM AUDIO CONTROLLER EXPANSION PORTS RS232 OUT SOURCE 1 OUT OUT INPUTS IR L L PRE-OUT L R SPKRS R NVC ZONE 1 +L– –R+ KEYPAD SPKRS +L– SOURCE 6 L IR R Riverside, CA.
SYSTEM APPLICATIONS Multizone Mixed Use The multizone system shown in Diagram 23 features the M8 in multiple, simultaneous operating modes. The example system shows a typical multizone system based around a Proficient M4 Multizone Controller. The M4 allows independent ON/OFF, source selection and volume control by zone. Each zone features it’s own amplifier that typically gets connected to a dedicated pair of speakers for that zone.
TROUBLESHOOTING PROBLEM SOLUTION Power Unit does not power up. Device synced to Control Out does not turn ON. a) Confirm Power Cord is plugged in to an unswitched 110V AC Outlet. b) If using audio sensing, confirm connection and audio output from audio source. Also confirm ON/OFF button is in the ON (in) position. c) If using voltage sensing, confirm connection, polarity and voltage from trigger device. Also confirm ON/OFF button is in the ON (in) position.
SPECIFICATIONS Audio Sections Power Output/Channel (2 channels driven into 8 Ω; remainder @ 1/8 rated power) THD (at rated power) Power/Channel (2 channels driven into 4 Ω) Power/Channel (bridged mode driven into 8 Ω) Damping Factor (non-bridged mode) Input Sensitivity (For rated power @ max VC) Bus Loop Outputs Frequency Response (@ 1 Watt @ 8 Ω) Channel Separation Cross Talk Between Channel Pair S/N Ratio (Re: Rated Output, IEC A, Line Inputs 1k Ω) 35 Watts, 20Hz to 20kHz <0.07% 55 Watts <0.
LIMITED 2-YEAR WARRANTY Should you have any questions regarding this, or any other Proficient Audio Systems product, please call our service hotline at 877.888.9004. techsupport@proficientaudio.com We are available to assist you every weekday, except holidays, between the hours of 7:00 a.m. and 5:00 p.m. PST.
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