CAMBRIDGE EDGE M Monoblock Power Amplifier Instruction Manual
- September 27, 2024
- Cambridge
Table of Contents
EDGE M Monoblock Power Amplifier
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Specifications:
- Model: EDGE M
- Power Amplifier Type: Monoblock
- Impedance Compatibility: 4 to 8 Ohms
- Power Cord Options: UK, EU, CU, JP (Depending on purchase
location)
Product Information:
What’s included with the EDGE M?
Inside the box of your EDGE M, you will receive:
- EDGE M Monoblock Power Amplifier
- UK power cord (Depending on purchase location)
- EU power cord (Depending on purchase location)
- CU power cord (Depending on purchase location)
- JP power cord (Depending on purchase location)
- Link Cable
- Instruction Manual
- Warranty Card
- Welcome Letter
- Unboxing Card
Product Usage Instructions:
Getting Connected:
Loudspeakers:
Check the impedance of your speakers (4 to 8 Ohms). Ensure
correct polarity at each speaker connector for optimal sound
quality.
Using Bare Wire Connections:
Prepare speaker cords by stripping off approximately 10mm of
insulation. Twist wires tightly together, insert into speaker
terminals, and tighten securely.
Using Banana Plugs:
Follow the diagram for balanced or unbalanced stereo
connections. Switch the Balanced/Unbalanced switch accordingly.
Power Syncing:
Use the Link wire between two EDGE M amplifiers to synchronize
power on/standby. Trigger In allows connection to home automation
equipment for power control.
Protection Circuitry:
The EDGE M includes Amplifier Protection Circuitry for Over
Temperature, DC, and Over Current faults. LED standby button turns
red if faults are detected.
FAQ:
Q: What should I do if the sound quality is affected?
A: Check and ensure that the screw terminals are tight to
prevent any impact on sound quality.
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EDGE M
Manual Generated: 30/04/2024 – 11:10
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Table of Contents
EDGE M …………………………………………………………………………………………………………………………………………………………………………………… 3
Introduction
……………………………………………………………………………………………………………………………………………………………………………. 3 What’s
included with the EDGE M? …………………………………………………………………………………………………………………………………………
4 Front panel
…………………………………………………………………………………………………………………………………………………………………………….. 5 Rear
panel connections …………………………………………………………………………………………………………………………………………………………..
6 Getting connected
………………………………………………………………………………………………………………………………………………………………….. 8 Power
syncing ………………………………………………………………………………………………………………………………………………………………………. 10
Protection circuitry
………………………………………………………………………………………………………………………………………………………………. 11
Troubleshooting ……………………………………………………………………………………………………………………………………………………………………
12 Technical specifications
……………………………………………………………………………………………………………………………………………………….. 13 Frequently
Asked Questions (FAQ) ………………………………………………………………………………………………………………………………………. 14
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EDGE M
Last updated: April 29, 2024 02:12. Revision #12607
Users Manual
Introduction
Last updated: August 9, 2022 05:03. Revision #10033 This guide is designed to
make installing and using this product as easy as possible. Information in
this document has been carefully checked for accuracy at the time of printing;
however, Cambridge Audio’s policy is one of continuous improvement, therefore
design and specifications are subject to change without prior notice. This
document contains proprietary information protected by copyright. All rights
reserved. No part of this manual may be reproduced by any mechanical,
electronic or other means, in any form, without prior written permission of
the manufacturer. All trademarks and registered trademarks are the property of
their respective owners. © Copyright Cambridge Audio Ltd 2022. For upcoming
news on future products, software updates and exclusive offers, make sure you
register your product at https://www.cambridgeaudio.com/register
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What’s included with the EDGE M?
Last updated: August 9, 2022 05:03. Revision #10032
Inside the box of your EDGE M you will receive:
1. EDGE M Monoblock Power Amplifier 2. UK power cord (Depending on which
country the EDGE M was purchased in)
EU power cord (Depending on which country the EDGE M was purchased in) CU
power cord (Depending on which country the EDGE M was purchased in) JP power
cord (Depending on which country the EDGE M was purchased in) 3. Link Cable 4.
Instruction Manual 5. Warranty Card 6. Welcome Letter 7. Unboxing Card
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Front panel
Last updated: August 9, 2022 05:03. Revision #10031
1. STANDBY/ON – Switches the unit between Standby mode (indicated by dim LED)
and On (indicated by bright LED). Standby mode is a low power mode where the
power consumption is less than 0.5 Watts. AUTO POWER DOWN (APD) The product
will automatically switch to standby mode after inactivity of 20 minutes. To
enable or disable this function, use the APD switch located on the rear of the
unit. AUTO POWER UP (APU) This product will automatically switch back on if it
detects audio signal and will resume normal function. Auto Power Up will only
work after the product has Auto Powered Down on the same input.
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Rear panel connections
Last updated: August 9, 2022 05:03. Revision #10030
1. VOLTAGE SELECTOR SWITCH Note: For use by Cambridge Audio service personnel
only! 2. AC POWER SOCKET 3. BALANCED/UNBALANCED INPUTS – The XLR input is
balanced and the RCA input is unbalanced. 4. BALANCED/UNBALANCED SWITCH –
Select depending on whether a source is connected to the balanced XLR or
unbalanced RCA input. Note: There will be no sound from the amp if the correct
input isn’t selected. If a source is connected to the balanced input, for
example, ensure that the balanced switch has been selected. 5. LOOP OUT – The
XLR output is balanced and the RCA output is unbalanced. 6. SPEAKER TERMINALS
Note: When using a banana plug, make sure the speaker terminals are completely
tightened before inserting the plug.
Connect the wires from your left channel loudspeaker to the left positive and
negative terminals and the wires from the right channel loudspeaker to the
right positive and negative terminals. In each case, the red terminal is the
positive output and the black terminal is the negative output. Care should be
taken to ensure no stray strands of wire short the speaker outputs together.
Please ensure that the loudspeaker terminals have been tightened completely to
provide a good electrical connection.
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It is possible for the sound quality to be affected if the screw terminals are
loose.
7. AUTO POWER DOWN (APD) SWITCH – Switches to enable or disable the Auto
Power Down function. When enabled, the amplifier will automatically switch to
standby mode after inactivity of 20 minutes.
8. LINK – Refer to the ‘Power syncing’ section of this manual for more
information.
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Getting connected
Last updated: August 9, 2022 05:03. Revision #10029
LOUDSPEAKERS
Check the impedance of your speakers. You can use types with an impedance of
between 4 and 8 Ohms. The red coloured speaker terminals are positive (+) and
the black speaker terminals are negative (-). Make sure the correct polarity
is maintained at each speaker connector or the sound can become weak and
“phasey” with little bass.
USING BARE WIRE CONNECTIONS
Prepare the speaker cords for connection by stripping off approximately 10mm
(3/8″) or less of the outer insulation. More than 10mm could cause a short
circuit. Twist the wires tightly together so there are no loose ends. Unscrew
the speaker terminal, insert the speaker cable, tighten the terminal and
secure the cable. Note: All connections are made using standard loudspeaker
cable.
USING BANANA PLUGS
We recommend using Banana plugs with our units to establish a secure
connection and ensure there are no loose strands of wire that may cause
unwanted noise or interference. Once you have stripped the outer insulation of
the cable and twisted the wires as indicated below, securely connect these to
your banana plugs and push the plug in as far as possible without applying
excessive force. Note: When using a banana plug, make sure the speaker
terminals are completely tightened before inserting the plug.
BASIC CONNECTIONS
Balanced stereo connections: The diagram below shows a basic balanced stereo
connection between two EDGE M amplifiers and the EDGE NQ. In this stereo
connection each Edge M drives one speaker.
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The Balanced/Unbalanced switch on the Edge M must be switched to the
Balanced’ position. Unbalanced stereo connections: The diagram below shows a basic unbalanced stereo connection between two EDGE M amplifiers and the EDGE NQ. In this stereo connection each Edge M drives one speaker. The Balanced/Unbalanced switch on the Edge M must be switched to theUnbalanced’ position.
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Power syncing
Last updated: August 9, 2022 05:03. Revision #10028 Use the Link wire between
two EDGE M amplifiers to synchronise power on/standby. When you turn one EDGE
M On/Off, the second EDGE M will also turn On/Off.
TRIGGER IN
The EDGE M can also be connected to the trigger control output of home
automation equipment to control the power state of the EDGE M. The input level
should be between 5V and 12V
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Protection circuitry
Last updated: December 1, 2022 12:07. Revision #10027 The EDGE M includes
Amplifier Protection Circuitry to detect faults with Over Temperature, DC and
Over Current. If any of these faults are detected the LED standby button will
turn red.
Over Temperature
Over temperature is caused by a combination of high listening levels and low
impedance speakers. The EDGE M includes temperature detection which constantly
monitors the heat generated by the output transistors. If the monitored
temperature reaches a high level (suitably within the limits of the output
devices) the amplifier will automatically switch into a fault mode to protect
itself from damage. If the loudspeaker impedance is low the temperature of the
amplifier may rise faster as the amplifier is working harder. If the amplifier
is mounted in a cabinet or the ventilation slots are obstructed the over
temperature detection may activate/reactivate after a short listening time.
Remedy – Leave the unit for 15 minutes to cool down before pressing the
Standby button to resume normal operation. If the unit has not fully cooled
down then the temperature may reach the limit soon after the amplifier is
powered up.
DC
EDGE M offers loudspeaker protection if the output of the amplifier goes to a
high constant voltage (DC) because of some internal fault. This is a rare
fault, although detecting it will protect your loudspeakers from damage.
Remedy – Due to the necessary sensitivity of the DC protection circuit,
extremely hard clipping of the amplifier may cause DC protection to be
triggered. If this fault occurs, please contact your dealer for service or our
support team https://www.cambridgeaudio.com/gbr/en/contact.
Over Current
EDGE M offers V/I (voltage/current) protection by constantly monitoring the
output transistors to keep them working inside their Safe Operating Area
(SOA). The SOA is a set of limits given by the output transistor manufacturer
to ensure reliability. The V/I protection has been incorporated within the
amplifier circuitry to provide a fast response to temporary overload
conditions. When the V/I protection is triggered the unit will continue to
operate but distortion may be heard as the unit protects the output
transistors. Remedy – Reduce the volume. If distortion is still present, check
the speaker connections and impedance ratings.
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Troubleshooting
Last updated: August 9, 2022 05:03. Revision #10026
There is no power
Ensure the AC power cord is connected securely. Ensure the plug is fully
inserted into the wall socket and is switched on. Check fuse in the mains plug
or adaptor.
There is no sound
Make sure the unit is not in Standby mode. Check that source component is
properly connected. Check that your speakers are properly connected. Ensure
that the correct input has been selected via the Balanced/Unbalanced switch.
If possible, use different interconnect cables and speaker cables. Check your
source devices’ volume control to ensure this is not muted. Check with
alternative source device.
There is no sound on one channel
Check speaker connections. Check interconnects.
There is weak bass or diffused stereo imaging
Ensure that speakers are not wired out of phase.
There is a loud buzz or hum
Ensure no interconnects are loose or defective.
The LED standby button is red
Check the `Protection Circuitry’ section for troubleshooting steps.
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Technical specifications
Last updated: December 7, 2022 04:34. Revision #10025 Continuous power output:
200W RMS into 8 Ohms 350W RMS into 4 Ohms THD (unweighted): <0.002% 1kHz at
rated power (8 Ohms) <0.02% 20Hz 20kHz at rated power (8 Ohms) Frequency
Response: <3Hz >80kHz +/-1dB S/N ratio (ref 1W into 8 Ohm): >93 dB S/N ratio
(ref max power): >115 dB Gain: 28dB (RCA)/ 22dB (XLR) Input sensitivity: 1.7V
RMS (RCA) / 3.4V RMS (XLR) Input impedances: balanced 100k Ohm unbalanced 47k
Ohm Inputs: Balanced, Unbalanced Outputs: Speaker, Loop out Max power
consumption: 1000W Standby power consumption: <0.5W Dimensions: 150 x 460 x
405mm (5.9 x 18.1 x 15.9″) Weight: 23.6kg (52.0lbs)
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Frequently Asked Questions (FAQ)
Last updated: August 9, 2022 05:03. Revision #10034
What impedance Speakers can I use with the EDGE M?
You can use speakers with an impedance between 4-8 Ohms with the EDGE M. The
EDGE M outputs 200W RMS into 8 Ohms and 350W RMS into 4 Ohms.
What amplification class does the EDGE M use?
The EDGE M uses Class XA amplification. For Class XA, the crossover point is
moved so that both sets of transistors are always on until the signal reaches
a loud enough level. This means that for low level signals, the amplifier is
essentially operating as a Class A amplifier and it is only when the signal is
sufficiently loud enough that the transistors switch over. Any crossover
distortion is therefore masked within the signal.