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Introduction

Congratulations. You have purchased an amplifier that is the culmination of 20 years of
amplifier research experience. David Belles has designed the Belles 350A Reference to
exceed in performance any amplifier in its class.

The Belles 350A Reference had been designed to be a reliable part of your precision
sound system, assuming it is handled and installed properly. We have provided these oper-
ating instructions for you, which, if followed, will insure you years of listening enjoyment.

The Belles 350A Reference is designed for systems using either 2, 4 or 8 ohm speakers. 

WARNING

: DO NOT move the speaker leads or interconnect cables until the amplifier has

been powered off at least 30 seconds. Failure to follow this waring will cause the line fuse
to blow.

Care

The most important thing you can do for your amplifier is clean it properly. There may be
occasions when dust or dirt my build up on your unit. Polishes, cleaners, solvent or 

any

ammonia based cleaners

will damage the aluminum anodize finish of your unit.  Use a

clean cloth and wipe the dirt from the unit. Use greater pressure to clean more persistent
dirt. With proper care, the appearance of the Belles 350A Reference will be preserved for
years.

Unpacking the Unit

When you receive your unit, carefully inspect the carton for any damage. Any obvious
dents or scuff marks should alert you to the possibility of damage to the contents. If any
external damage to the carton is found, note the location in relation to the orientation of the
amplifier as it is removed from the carton. 

Open the top flaps of the carton and carefully remove the unit, lifting it straight out of the

carton. Inspect the unit for damage, paying particular attention to those areas that corre-
spond to any damaged areas on the outer carton.

If your unit was damaged (1) Contact your dealer if the unit wa purchased locally. (2)

Contact your common carrier (eg- UPS) if your unit was shipped to you. Do not send the
unit back to the shipper until instructed to do so by the carrier. To do so may void any dam-
age claim you may have. 

Do not discard your packing materials or cartons. Should it be necessary to return the

unit, it must arrive undamaged. Using the original packing materials will ensure your unit
arrives safely. Sending your unit back in improper packing could lead to the unit being
damaged, with no possibility of a successful claim against the carrier. The unit 

must

be

placed in the original packing bag to avoid marring the unit.

1

Summary of Contents for Belles 350A Reference

Page 1: ...ReferencePower Amplifier Instruction Manual ...

Page 2: ...ion grills If this occurs switch off immediately disconnect from the mains supply and contact your dealer for advice Safety Precautions Check that the rear of the unit indicates the correct mains supply voltage and frequency If your mains supply voltage or frequency is different please consult your dealer The unit is designed to operate only on the supply voltage and type that is indicated on the ...

Page 3: ...nion symbol for indicating separate collection for electrical and electronic equipment This product contains electrical and electronic equipment that should be reused recycled or recovered and so should not be disposed of with unsorted regular waste Please return the unit or contact your authorised dealer from where the product was purchased for more information Plug Fitting Instructions U K The p...

Page 4: ...ch is coloured GREEN YELLOW must be connected to the terminal which is marked with the letter E or coloured GREEN If a 13amp BS1363 plug is used a 4 0 amp slo blo fuse must be fitted or if any other type of plug is used a 4 0 amp slo blo or 4 0 amp slo blo fuse must be fitted either in the plug or adapter or on the distribution board ...

Page 5: ...per care the appearance of the Belles 350A Reference will be preserved for years Unpacking the Unit When you receive your unit carefully inspect the carton for any damage Any obvious dents or scuff marks should alert you to the possibility of damage to the contents If any external damage to the carton is found note the location in relation to the orientation of the amplifier as it is removed from ...

Page 6: ...ugging in or unplugging interconnect cables running from the source to the pream plifier or sound processor always make sure that the preamplifier or sound processor vol ume control is set at zero 1 Before doing anything be sure that the power switch on the amplifier s front panel is in the off position Please do not turn the amplifier on until directed to do so 2 Locate the A C power supply cord ...

Page 7: ... post 6 Connect the right speaker cable positive red wire terminal to the right monoblock right red speaker binding post 7 Connect the right speaker cable negative black wire terminal to the right monoblock left red speaker binding post There should be no connections to either black binding post 8 Connect the power cords to each amplifier 9 Power on the system using the following order sources suc...

Page 8: ...hannel into 8 ohms Distortion THD and IM less than 0 1 at rated power Damping Factor over 2000 Peak Current 64 amperes Stereo Inputs Unbalanced stereo only Monoblock Inputs Balanced only Input Sensitivity 1 98 for rated power Input Impedance 50 000 ohms Hum Noise over 100 dB Crosstalk over 60 dB Frequency Response 0 2 to 100 000 Hz Dimensions 17 W x 5 25 H x 16 5 D Shipping Weight 65 pounds Power ...

Page 9: ... and the manufacturer neither assumes nor authorizes any person to assume for it any other obligation or liability in connection with the sale of this product This warranty is not transferable except by written authorization from the manufacturer In order to qualify under the terms of the above warranty all items must be returned to the appropriate factory service depot with all shipping charges p...

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