Bel Canto E.One Series Manuel utilisateur

REF500

e.One™Series

Mono Audio

ower Amplifier

Bel Canto Design, TD.

221 1st Street North, Suite 300

Minneapolis, MN 55401

Phone: (612) 317.4550

Fax: (612) 359.9358

www.belcantodesign.com

[email protected]

User's Guide and Operating Information

T A B L E O F C O N T E N T S

BelCantoDesignStatement..................................................3

DesignFeatures ............................................................4

Unpacking.................................................................5

InitialSetupandOperation ...............................................6&7

Specifications ..............................................................8

The Bel Canto Design e.One Series REF500 is a perfect example of what can be

accomplished when elegant engineering and depth of empirical knowledge are

combined. All components are selected for high sound quality, precision, techni-

cal performance, and material quality. Bel Canto’s circuit designs and component

quality will provide superb performance and years of listening satisfaction.

REF500

Mono Audio ower Amplifier

™

Bel Canto Design audio products are designed to bring you closer to the power

and beauty of your music. Our goal is simply to provide the most expressive and

powerful musical experience outside of the live event and bring some of the

greatest musicians and their performances into the intimacy of your home. We

design equipment which is easy to own, use and live with. We fully expect that

your enjoyment and appreciation of your Bel Canto purchase will grow as you

live with it and experience all of the fine audio subtleties that emerge.

Bel Canto Design

Get Closer

REF500 User’s Guide 0808 Rev. A

Warm Up

The REF500’s sonic performance will start to stabilize after approximately forty

(40) hours of continuous power up. We recommend that the REF500 remains

powered for optimum performance.

The e.One Series REF500 is a mono

amplifier designed to deliver 250

watts into 8 ohm loads and 500 watts

into 4 ohm loads. The REF500 has

current drive capability for virtually

any loudspeaker load down to 3

ohms. This is achieved in a compact

and elegant product through our

adaptation of the latest analog

switching amplifier and power supply

technology from the ICEpower group.

Bel Canto’s new generation of e.One

analog switching audio power ampli-

fiers extend our leadership in this

technology.

These amplifiers incorporate per-

formance enhancing technologies

that bring musicality and perform-

ance to new levels.

• A custom input stage is added for

increased linearity, common mode

rejection and improved input stage

drive to the amplifier. This circuit

results in lower noise in real-world

operation, lower distortion and bet-

ter dynamic performance for the

amplifier.

• This input stage uses the latest

advanced amplifiers and passive

components including: Caddock

resistors, Solid Electrolytic ultra-low

ESR decoupling capacitors and low

noise regulated power supplies.

These devices ensure that the input

section is utterly transparent,

enhancing the performance of the

core amplifier.

• The REF1000 MkII and REF500

Mono amplifiers also include cus-

tom power supply rectification and

filters that add 45 Joules of energy

storage to the power supply. This

stage results in lower noise in oper-

ation, reduced sensitivity to power

line effects and better perceived

power delivery and dynamics.

Incorporating high speed, low noise

rectifiers, high voltage film filter

capacitors and high energy storage

this filter allows the regulated

power supply to perform at its best.

• The REF500 uses 3rd generation

switching amplifiers for lower High

Frequency distortion, increased

clarity and better high frequency

extension.

Design Features

Warning!

Do not connect power to this amplifier yet!

This amplifier, like any electrical component, can be dangerous and cause injury

unless correct handling procedures are observed and used. Before powering this

preamplifier it is necessary to read and follow proper procedures concerning its

setup and use.

Any tampering of internal parts will immediately void your warranty.

USA customers: For Warranty Coverage complete and mail the Owner's

Registration Papers immediately.

Unpacking

The REF500 box contains:

1 – REF500 User's Guide

1 - Power Cable for connection

to utility power [1.85m,

6' long]

1 – REF500 Amplifier.

1 - Owner's Warranty /

Registration Sheet

Carefully inspect your new unit and

check for shipping damage. If there is

any damage, or if any piece is miss-

ing, please contact your dealer, dis-

tributor or Bel Canto Design.

Save all packing materials as the

packing is specially designed to pro-

tect the amplifier for shipping or

transporting it. If you lose or damage

the packing materials or carton,

please contact your dealer or distrib-

utor before attempting to transport

the preamplifier.

The REF500’s power supply is preset

for the proper AC line voltage before

you receive it. The power cable will

have the correct plug for your local

power system. If you believe this is

not true, please contact your dealer

immediately. Do not attempt to alter

or change power settings yourself.

This will void the warranty.

Unpacking

REF500 Rear Panel

Rear anel Connections

Never Connect Either the ositive or Negative Speaker Output to Any

Ground Contact!

Connecting any Speaker Output on the REF500 to Ground will cause the amplifier

to go into protection and could damage the amplifier and void the warranty.

1) Power Switch: Power is on when the

switch is toggled to the I position

and off in the O position.

2) Input Connections and RCA/X R

switch: When using RCA cables for

the input insure that the RCA/X R

switch is pressed in to the RCA posi-

tion. When using X R cables insure

that the switch is out in the X R

position. Do not connect both XLR

and RCA cables to the inputs!

3) Output Connections: Attach your

loudspeaker to the output connec-

tors, insure that the polarity of each

speaker is correct and the same so

that no phase inversion can occur.

Never Connect Either the ositive or

Negative Speaker Output to Any

Ground Contact!

4) IEC power cord jack: Connect a

heavy gauge power cord from

this jack to the wall power supply.

Note the power setting indicated

on the back of the amplifier before

connecting the power.

When all connections to and from the

amplifier have been made then double

check everything, insure that the pre-

amplifier is powered on and set to a

Mute setting and power on the REF500.

REF500 User’s Guide 0808 Rev. A

Front anel Indicator Lamp

What to do if there is hum or ground noise:

The small blue ED lamp indicates that

the power is connected to the REF500

and that the power switch is in the ON

position. If the amplifier detects a fault

or short circuit in the output connec-

tions then it will go into a protection

mode and stop playing. If this occurs

toggle the power switch to the OFF

position and check the speaker cabling

to insure that no speaker output is

either shorted together or connected to

a ground. When you are certain that

the loudspeaker cabling is correct,

power the unit ON again and insure

that the Blue lamp is lit and that music

will play.

Fuse rotection

There is an internal fuse protection on

the REF500. If the power switch is in

the ON position, the power cable is

connected to a functioning power out-

let at the correct voltage and the Blue

lamp is not lit,this indicates that the

internal fuse may have blown. If this

occurs contact your dealer, distributor

or Bel Canto for service. There are no

user replaceable fuses or other parts.

Opening the chassis will void your

warranty.

1) Check that the RCA/X R switch is in

the correct position for the type of

connection being used.

2) Insure that the preamplifier or any

source components are not produc-

ing hum by setting the preamplifier

to a MUTE or Standby setting.

3) The design of the REF500 reduces the

chance for ground loop induced hum

but we still recommend that you use

shorter interconnect cables to the pre-

amplifier and connect all power cables

to a common outlet box or power

conditioner unit to reduce the possibil-

ity for ground current noise being

induced into the audio signal path. If

you choose to power your source and

preamplifier components from a dif-

ferent AC supply than used for the

REF500 amplifiers, we recommend

that you use a high quality balanced

X R cable driven from a true balanced

X R preamplifier output. We do not

recommend that you resort to ‘cheater

plugs’ or some other means to dis-

connect the power ground from the

REF500 as this may lead to dangerous

operation and void the warranty.

REF500 User’s Guide 0808 Rev. A

Specifications

Maximum Power Output: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .500W 4 ohms, 250W 8 ohms

Power Output 1% THD: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .450W 4 ohms, 225W 8 ohms

MinimumLoad:...........................................................................3ohms

Frequency Response: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+/-3 dB 1.5Hz-70KHz, all loads

THD+ : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.003% 1W, 1KHz, 4 ohms

IMD (CCIF): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.0003%, 1W, 14:15KHz, 4 ohms

Output noise: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35uVRMS A-weighted 10Hz-20KHz

Voltage gain: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27dB (single ended or balanced input)

Dampingfactor: ..........................................................................>1000

Output Impedance at 100Hz: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .<8 milliohms

DynamicRange: ..........................................................................121dB

InputVoltageforMaxOutput: .................................................................2Vrms

Input connections: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Single-ended RCA or balanced XLR

RCA input impedance: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..100Kohms

Balanced input impedance: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..200Kohms

Output connections: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-set WBT 5-way binding posts

StandbyPower: ...........................................................................10W

Size: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8.5x3.5x12[inches], 216x76x305[mm] (WxHxD)

Weight: .............................................................................15lbs,7Kg

Features and specifications are subject to improvements and changes without prior notice.

Bel Canto Design, LTD.

221 1st Street North, Suite 300

Minneapolis, MN 55401

hone: (612) 317.4550

Fax: (612) 359.9358

www.belcantodesign.com

Info@belcantodesign.com

e.One™ is a trademark of Bel Canto Design, LTD

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