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Table of contents for the manual
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Page 1
G Series P ower Amplifier Installation Guide G Series Power Amplifier 1 9/5/06 11:59:26 am[...]
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Preface i i Important safety instructions • Read the instructions . • K eep these instructions . • F ollow all instructions . • Do not use this apparatus near w ater . • Clean only with a dry cloth. • Install only in accordance with the manufacturer’ s instructions . • Refer all servicing to approved service personnel. WARNING: T O [...]
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Contents iii Contents Introduction 1 Provides information about the power amplifier models , a description of each product, and technical specifications . P ower amplifier models 1 Specifications 4 Installing the power amplifier 5 Describes how to install the power amplifier and connect it to the other equipment in the system. Unpacking 5 Inputs 6 [...]
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Preface i v Copyright and acknowledgements Sales and service in the UK Meridian Audio Ltd Latham Road Huntingdon Cambridgeshire PE29 6YE England T el +44 (0)1480 445678 F ax +44 (0)1480 445686 Sales and service in the USA Meridian America Inc 8055 T roon Circle Suite C Austell GA30168-7849 USA T el +1 (404) 344 7111 F ax +1 (404) 346 7111 World Wid[...]
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Introduction 1 Product Channels P ower per channel Bridged G55 5 100W into 8 Ω , 160W into 4 Ω 300W into 8 Ω G56 2 100W into 8 Ω , 160W into 4 Ω 300W into 8 Ω G57 2 200W into 8 Ω , 330W into 4 Ω 620W into 8 Ω All G Series power amplifiers provide unbalanced and balanced inputs and are bridgeable . Introduction T his guide provides[...]
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Introduction 2 Gener al features Each of the G Series power amplifiers is based on modules that feature a symmetrical design with fully electronically-balanced inputs . Both balanced and unbalanced inputs are provided, but in fact the unbalanced inputs are converted to balanced before they enter the amplifier itself , using Meridian’ s proprietar[...]
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Introduction 3 G55 Five-channel P ower Amplifier T he Meridian G55 is a five-channel unit, and delivers a solid 100W RMS per channel continuous into 8 Ω . T he outer pairs of channels can be operated in bridge mode by actuating a back-panel rocker switch on the channel 1 and/or channel 5 modules , in which case the first channel input of the pair[...]
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G55 G56 G57 Distortion Less than 0.01%. Less than 0.01%. Less than 0.01%. Signal/Noise Better than -100dB . Better than -100dB . Better than -100dB . Inputs Balanced on XLR and unbalanced on phono . Sensitivity 1.0V RMS phono/per leg balanced. 1.0V RMS phono/per leg balanced. 1.4V RMS phono/per leg balanced. Input impedance 16k Ω phono, 32k Ω b[...]
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Installing the power amplifier 5 Installing the power amplifier Unpacking T he power amplifier is supplied with the following accessories: • P ower cord. • Bridge-mode links (G55-2, G56/G57-1). • T his manual. If any of these items are missing please contact your dealer . Note: Y ou should retain the packaging in case you need to transport th[...]
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G55 Five-channel P ower Amplifier ?[...]
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T o connect the G55 to an unbalanced preamplifier (eg G01 Control Unit) G55 Five-channel P ower Amplifier OFF OFF G01 Control Unit PRE OUT A UDIO LEAD A U DIO LEAD • Switch the BRIDGE MODE switch for channels 1/2 to the OFF position. • Connect the UNBALANCED sockets on the power amplifier to the outputs from the preamplifier . • Switch the co[...]
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Installing the power amplifier 8 T o connect the G55 to a G68AXV Digital Surround Controller G55 Five-channel P ower Amplifier OFF OFF CENTRE SUB RIGHT LEFT REAR LR A/B LR SIDE LR G68AXV Digital Surround Controller • Switch the two BRIDGE MODE switches to the OFF position. • Connect the LEFT , RIGHT , and CENTRE balanced outputs from the G68AXV[...]
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?[...]
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G57 T wo-channel P ower Amplifier ?[...]
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T o connect to an unbalanced preamplifier (eg G01 Control Unit) G01 Control Unit PRE OUT A U DIO LEAD A U DIO LEAD G56/G57 OFF • Switch the BRIDGE MODE switch to the OFF position. • Connect the UNBALANCED sockets on the power amplifier to the outputs from the preamplifier . • Switch the channels to the UNBALANCED position. Y ou should either [...]
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T o connect to each channel of a G68AXV or G68XXV Digital Surround Controller CENTRE SUB RIGHT LEFT REAR LR A/B LR SIDE LR G68AXV/XXV Digital Surround Controller G56/G57 ON 2 x G56/G57 T wo-channel Power Amplifiers T hree G56 or G57 T wo-channel P ower Amplifiers can be used in bridge mode for each of the front channels of a G68AXV or G68XXV Digita[...]
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G55 Five-channel P ower Amplifier ?[...]
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Installing the power amplifier 1 4 T o connect to passive loudspeakers Loudspeak er G55 Five-channel P ower Amplifier T reble Bass/mid Loudspeak er OFF OFF T reble Bass/mid • Set the BRIDGE MODE switches to the OFF position. • Connect one of each pair of the red and black terminals from the appropriate channel of the power amplifier to the red [...]
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Installing the power amplifier 1 5 T o wire to passive loudspeaker s in bridge mode Loudspeak er G55 Five-channel P ower Amplifier T reble Bass/mid Loudspeak er ON INPUT INPUT ON T reble Bass/mid Y ou can wire channels 1/2 and 4/5 in bridge output mode , to obtain more than twice the power output. • Switch the BRIDGE MODE switches to the ON posit[...]
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Installing the power amplifier 1 6 T o bi-amp to two passive loudspeakers Loudspeak er T reble Bass/mid Loudspeak er OFF INPUT INPUT OFF T reble Bass/mid G55 Five-channel P ower Amplifier Extremely high sound quality can be achieved using two separate channels of the power amplifier to drive the LF and HF units in each loudspeaker . • Switch the [...]
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Installing the power amplifier 1 7 T o connect two G55s to a seven-channel surround system ON ON OFF ON Main right input Rear left input Rear right input G55 Five-channel P ower Amplifier G55 Five-channel P ower Amplifier Main left input Centr e input Side left input Side right input Main right Side right Main left Rear right Rear left Side left Ce[...]
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G56 T wo-channel P ower Amplifier ?[...]
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G57 T wo-channel P ower Amplifier [...]
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Installing the power amplifier 2 0 T o connect to passive loudspeakers Loudspeak er T reble Bass/mid Loudspeak er T reble Bass/mid G56/G57 OFF • Set the BRIDGE MODE switch to the OFF position. • Connect one of each pair of the red and black terminals from the appropriate channel of the G56/G57 to the red and black terminals on the loudspeakers [...]
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Installing the power amplifier 2 1 T o wire to a passive loudspeaker in bridge mode Loudspeak er INPUT T reble Bass/mid G56/G57 ON Y ou can use the G56/G57 as a mono power amplifier , to obtain more than twice the power output, by wiring it in bridge mode . • Switch the BRIDGE MODE switch to the ON position. • Fit the supplied bridge mode link [...]
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Installing the power amplifier 2 2 T o bi-amp to two passive loudspeakers Extremely high sound[...]
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T r o u b l e s h o o t i n g 2 3 T roubleshooting We expect you to achieve superb results with the power amplifier . If , however , you encounter any problems, either when installing it, or during operation, please check the following pages for suggested solutions . If these suggestions fail to cure the problem, please contact your Meridian dealer[...]
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T r o u b l e s h o o t i n g 2 4 Maintenance Cleaning T o clean the case • Disconnect the power cord before cleaning the unit. T he exterior surfaces of Meridian G Series products are made from solid anodised aluminium, powder coated steel, thermoplastic rubber , and glass. T hey are designed to be easily wiped clean with a dry , lint free cloth[...]
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T r o u b l e s h o o t i n g 2 5 Service and guar antee Service T he Meridian G Series of hi-fi components has been carefully designed to give years of untroubled service . T here are no user - serviceable parts inside the case , nor do the units require any form of maintenance. In the unlik ely event that your product fails to function correctly [...]
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T r o u b l e s h o o t i n g 2 6 G Series Power Amplifier 26 9/5/06 12:00:07 pm[...]
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Index 2 7 A accessories 5 B balanced preamplifier , connecting to G55 7 G56 or G57 11 bi-amping G55 16 G56 or G57 22 bi-wiring G55 14 G56 or G57 20 bridge mode G55 15 G56 or G57 21 C cleaning 24 connections , cleaning 24 F fan control output 13, 18, 19 G G55 Five-channel P ower Amplifier 1 bi-amping 16 bi-wiring 14 G55 Five-channel P ower Amplifier[...]
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Index 2 8 L loudspeak ers , connecting to G55 14-16 G56 or G57 20-22 M mains fuse, changing 24 models 1 O outputs 13 P preamplifier , connecting to 11 S safety warnings ii seven-channel surround system, connecting to 17 specifications 4 standby 5 stereo preamplifier , connecting to 11 T trigger input 5, 9, 10 troubleshooting 23 U unbalanced preampl[...]