Bose B1500, B2000 Owner's Manual

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Page 1

500 / B2000 Power Amplifiers

Owner s Guide

Designed for

Page 2

Safety Information

Safety Warning

This unit is fitted with a 3-wire power connector. For safety reasons, the earth lead should not be disconnected in any circumstance. If ground loops are encountered

consult the section on input connections later in this manual.

Please pay special attention to the AC power considerations part in chapter 4 and the

Maintenance

part in chapter 6.

To reduce the risk of fire or elec

tric shock, do not expose the unit to rain or

moisture.

To avoid electrical shock disconnect from the mains supply before removing the cover. The installation of Bose® Equaliser cards or servicing should be carried out by qualified personnel only.

Please

read this owner s guide

The Model B

1500

and B2000 Professional Stereo Power Amplifiers are carefully engineered to provide excellent sonic performance. This guide will help you set up and operate your system correctly.

Record your serial number here:

Mod

el B

1500

Professional Stereo Power Amplifier: ___________________________ Model B2000 Professional Stereo Power Amplifier: ___________________________ Date of purchase ___________________ Retailer s name ______________________

For ease in obtaining service, we recommend that you keep your purchase receipt, or a copy of the receipt, in this owner s guide.

Page 3

Contents

Safety Information 2

2. Before you begin

2.1. Unpacking

the Amplifier ...

......

3. The B1500

and B2000 Prof

essiona

l Power Amplifiers .. 5

4. Installation

4.1. Location and general precautions

4.2. Mechanical

considerations 6

4.3. Thermal

nsiderations

.........

4.4.

AC power considerations .. 6

4.5. Magnetic le

akage and R.F interference considerations

4.6.

Inputs .. ...

......

4.7. Link

ing amplifiers.

4.8. Bridged mono

operation .

...10

4.9.

Outputs . .11

5. Operation

5.1.

Switching on .12

5.2.

Level controls .. 12

5.3. Signal

indicators ...12

5.4.

Limiters

5.5.

Temperature control ...

..... 12

5.6.

Fault indicators .12

5.7. Bridged L

6. Faults / Fus

/ Maintenance ....13

7. Bose EQ Card

s .14

7.1. B1500

EQ card fitting

. .14

7.2. B2000

EQ card fitting

...

........

7.3. EQ card fitting for b

ridged mono

operation . 16

8. Technical Specifi

cation .. 17

9. Declaration of

Conformity . 18

Page 4

Before You Begin

Congratulations on your purchase of a

new BOSE® Professional Stereo Power Amplifier. The product has been designed to provide excellent sonic quality and has been

engineered for reliability.

2.1 Unpacking the amplifier

Carefully unpack your amplifier. Keep the original carton and packing materials for possible future use. Check for any visible signs of damage. If the amplifier appears damaged, do not try to use it. Notify the Bose Product Support or your authorised Bose Pro

Partner

Page 5

3. B1500

B2000 Power Amplifiers

The B

1500

or B2000 Amplifier is a no compromise, high quality, class AB power

amplifier.

Fan speed is varied as required to keep the amplifier within its temperature limits. Signal limiters are included to protect speakers from clipped signals.

The amplifiers include full DC and short circuit protection on the outputs to ensure trouble

-free service in harsher environments.

The B

1500

& B2000 amplifiers are a good power match for BOSE mid/high and bass

loudspeaker products, especially in foreground entertainment systems.

The B

1500

amplifier is rated at

450

watts per channel 8 ohms and

715 watts per

Channel

into 4 ohms and

1025

watts per channel into 2 ohms. In bridged mono

operation, it is rated at

1430

watts into 8 ohms and

2050

watts into 4 ohms.

The B2000 amplifier is rated at 560

watts per channel 8 ohms and

925 watts per

Channel

into 4 ohms and 1300 watts per channel into 2 ohms. In bridged mono

operation, it is rated at

185

0 watts into 8 ohms and 2600 watts into 4 ohms.

The inputs of each amplifier are high quality, electronically balanced and have high common-mode rejection for exceptional hum and noise rejection. In ad

dition, both the

1500

and the B2000 amplifiers are equipped with internal connectors that enable the use of BOSE Equalisation cards (EQ cards) one for each channel. This allows for different equalisation for each channel if required (provided the correct

equalisation

cards are installed). Equalisation cards are available for the entire range of B

OSE

professional

loudspeakers that require dedicated product equalisation.

A sample setup might involve one B

1500 power

amplifier driving two channels

BOSE 802® III loudspeakers in stereo mode. A second Model B

1500

power

amplifier

in bridged mono mode could be added to drive a BOSE

502®B bass module.

Alternatively, just one amplifier could be used to drive the BOSE

802® III

loudspeakers on one channel and the BOSE

502®B module on the other channel. Many configurations are possible. This flexibility can be achieved by installing the EQ cards for the desired setup.

Page 6

4. Installation

4.1 Location and general precautions

Locate the unit where it will not be exposed to rain or moisture. If fluid or a foreign object enters the unit, disconnect the power plug. Do not pull by the cord; grasp the plug firmly. Contact an authorised dealer or service centre.

Locate

the unit where it will be protected from heat and allow adequate ventil

ation. Place it away from direct heat sources, such as heating vents and radiators. Make sure the ventilation holes are not covered and air can circulate freely behind, beside, and above the unit.

4.2 Mechanical considerations

When mounting the amplifier in a rack or enclosure ensure the rear of the unit is adequately supported. The brackets, which are supplied, fit standard 19-inch (483mm) rack mounting systems. THE FRONT PANEL IS NOT CAPABLE OF

SUPPORTING THE UNIT ON ITS OWN.

4.3 Thermal consideration

When mounting the amplifier in a rack or enclosure ensure

THERE IS ADEQUATE

VENTILATION.

The cooling fans suck cool air in through the front and blow hot air

out at the rear of the unit through the ventilating grills. IF THIS AIR IS NOT ALLOWED TO ESCAPE, OVERHEATING WILL OCCUR. Take care when mounting other equipment in the same rack.

4.4 AC power considerations

The

1500

and B2000 power amplifiers have been manufactured to comply with local power supply requirements. Both have been set at a mains voltage of 240Volts. Be sure to

connect

your power amplifier to a supply capable of supplying the correct

voltage and adequate current to allow full-

power

operation of the power amplifier. The current demand of a power amplifier varies depending on the impedance of the load,

the output level of the power amplifier and content of the program material. Before connecting the unit to the supply, ensure that the voltage (printed on the rear panel

of the amplifier) is correct and that a mains fuse of the correct type and rating has been fitted in the fuse holder on the rear panel of the amplifier (The B2000 is fitted with a circuit breaker and hence does not have a mains fuse on the rear panel). Mains cabling to both the B

1500

and the B2000 should be protected by suitable over

current device.

Note:

To convert the B

1500

and B2000 to 220V operation, one should proceed as follows

(see also

the following picture):

Locate the violet & brown wires from the mains transformer to the PCB spade connectors marked up as Live Tx and Spare Tx . Connect the violet wire to Live

Page 7

4. Installation

Tx and the brown wire to Spare Tx for 220Volt operation (Connect brown to Live Tx and violet to Spare Tx

for 240Volt operation ).

Live Tx

Spare Tx

1500

shown only

4.5 Magnet

ic leakage & R.F Interference considerations

Like all high power amplifiers, B

1500

& B2000 should be kept away from other equipment that is sensitive to magnetic fields. Also, this amplifier may suffer a substantial reduction in performance if it is subjected to, or mounted close to equipment that radiates high R.F. fields.

Page 8

Installation

4.6 Input

The inputs are made via 3-pin XLR connectors, which are electronically balanced and should be connected via a high grade twin core screened cable, as follows:

alanced operation

1500

shown only

GND

(Shield)

GND

(Shield)

PIN1

- Screen (see note)

PIN2

- Hot (signal +)

PIN3

- Cold (signal -)

GND

(Shield)

Balanced

Source

GND

(Shield)

Balanced

Source

GND

Channel B

Channel A

NOTE

: This amplifier is wired to the latest industry recommendations. PIN1 is

connected directly to the chassis/mains earth. If ground loops (mains hum) are encountered

, remove the screen connection from the other end of the cable and leave

it open circuit. If problems persist, consult your dealer/supplier. DO NOT TAMPER

WITH OR ALTER ANY GROUND (EARTH) CONNECTIONS INSIDE THE AMPLIFIER.

Pin No.

Connection

Screen (ground)

Hot (signal +)

Cold (signal

Page 9

4. Installation

balanced

operation

The amplifier is designed to operate with fully balanced equipment and ground loops or loss of performance may be experienced if connected to unbalanced sources. If it is unavoidable however, the following wiring should be used. The cable should still be twin core plus screen.

1500

shown only

PIN1

- Screen (see note)

PIN2

- Hot (signal +)

PIN3

- Cold (signal -)

Channel B

Channel A

Unbalanced

Source

GND

(Shield)

GND

(Shield)

GND

(Shield)

Unbalanced

Source

GND

(Shield)

Pin No.

Connection

Screen (ground)

Connect to ground at unbalanced equipment or float

Hot (signal +)

Cold (signal

Gnd/Shield Either connect to source ground or leave floating (no connection

)

Page 10

4. Installation

4.7

Link

ing amplifiers

Each

amplifier

channel is provided with a 3-pin XLR connector marked Link which

allows the input

signals

to be linked to further amplifiers etc. The pin connections a

the same as for the input

4.8 B

ridged mono

operation

For bridged

mono

operation connection

should be made to channel A input only. Set

he rear panel

bridge

switch to the bridged mono position

for bridged

mono

operation

The output should be taken from the bridged output Speakon

connector

When using a B

1500

or B2000 in bridged mono with a BOSE® EQ card, only 1 card

should be fitted into the channel A EQ connector socket located inside the amplifi

er.

For f

urther details

see chapter 7: Bose® EQ cards.

Page 11

4. Installation

4.9 Outputs

The speaker outputs are via Neutrik Speakon connectors. Only 2 of the 4 poles are used.

Stereo operation

1500 Shown

Only

Terminations are as

follows:

annel A Live (Hot)

Pin +1

annel

B Live (Hot) +

Pin +1

annel A Return(Cold

) -

-1 Channel B Return(Cold) -

-1

NOTE

Although the "cold" output terminals are nominally at 0V, they should not be joined

together;

otherwise cross-talk may be introduced.

Because the currents involved are very high, the speaker cables should conform to the following minimum requirements, otherwise the losses will cause the cables to get hot and audio power will be reduced:

A (B1500

) or 16A (

B2000

) -

into

4ohm speaker loads

Bridged mono o

peration

Use centre Speakon connector marked B

ridged

and connect as follows:

Bridged Live (Hot) +

Pin +1

(Channel A

in phase

)

Bridged Return (Cold)

-1

(Channel B

out of phase

)

When operating in bridged mode, the minimum impedances are doubled. The minimum load in bridged

mode is: 4 ohms (B

1500

and B2000).

Page 12

5. Operation

5.1 Switch on

At S

witch

-on the protection circuit will initially activate whilst the circuits stabilise.

Assuming no faults are detected after a few seconds only the POWER LED (and

SIGNAL indicators if signal is applied) will illuminate.

5.2 Level controls

These are analogue controls allowing precise level settings. Note that in BRIDGED mode only channel A control is active.

5.3 Signal indicators (blue LED)

These

are active from a minimu

m output level of approximately 1 Watt

1500

) or

10 watts (B2000) and are an indication only of signal presence.

5.4 Limiters (amber LED)

The B

1500

& B2000 amplifiers incorporate signal limiters, which are preset to

prevent clipping with high levels of drive. The amber

LED's

on the front panel

illuminate to indicate operation of the limiters.

5.5 Fault indicator (Audio Protection

red LED)

If the outputs are shorted or if DC is present, the protection circuit will disengage the outputs and the Audio Protection (A/P) LED will illuminate. The amplifier will continue to be monitored and depending on the type of fault, will either reset after the fault has been cleared or by switching the mains switch off and then on again after a fe

w seconds. (See also temperature control above)

Temperature related faults will reset once the unit has cooled sufficiently. Output short circuits will require manual reset after clearing the fault.

5.6 Bridged (green

LED)

This indicates the position of the switch on the rear panel and is illuminated when bridged mode is selected with the switch pressed in.

5.7 Temperature control

The cooling fans respond to temperature sensors within the unit to maintain a safe operating temperature. In the event of excessive temperature, the protection circuit will disabl

e the output. The red Audio-

Protect (A/P) LED will indicate this condition

(see fault indicator). The B

1500

has two fans connected permanently with variable speed.

The B2000 has one fan per channel and

has a jumper link to enable them from cold.

Normal dynamic signals will not cause the amplifier to overheat unless the ventilation is inadequate. (See installation section and maintenance section.)

Page 13

6. Faults / Fuses

Maintenance

There are internal secondary (low voltage) fuses on

some internal supply rails.

In the event of failure the unit MUST BE DISCONNECTED FROM THE MAINS

SUPPLY BEFORE REMOVING THE UNIT

COVER

. The fuses should be replaced with the same type only. THIS SHOULD BE CARRIED OUT BY QUALIFIED PERSONS ONLY.

WARNING:

If the replaced fuse blows again then there is a serious fault within the unit. Refer to a service engineer or contact your dealer. NEVER INCREASE THE RATING OF THE FUSE.

ENSURE THAT ELECTRICAL POWER TO THE UNIT IS DISCONNECTED BEFORE CARRYING OUT ANY M

AINTENANCE.

NOTE:

The filter b

etween

the air intake

(frontplate) and the

front

panel

the B1500

& B2000 amplifiers should be cleaned or replaced periodically, e.g. 12-24 months. (Filters in amplifiers located in more 'dirty' atmospheres may require more frequent maintenance).

No special tools are required to remove the filters. The filter should be

'dry' cleaned, using a vacuum cleaner preferably. Running the

amplifier

without a

filter is not recommended

. Replacement filter material is available.

No oth

er regular maintenance is required.

If you have any doubt about carrying out this procedure, refer to a qualified service engineer or contact your

Bose ProPartner

Page 14

BOSE® EQ Card

The B

1500

and B2000 power amplifiers are

compatible

with the entire range of

BOSE Equalisation

Cards

When configuring a bi-

amplified

system jumper links allow you to

select high

pass

filter

functionality on

certain

EQ cards for mid/high loudspeakers. This rolls off the

low frequency to the mid/high loudspeaker providing the low

freque

ncy

crossover point to match BOSE bass loudspeakers. An example of this would be BOSE 502®A Articulated Array on channel A with the HPF link in place and a BOSE 502®B Bass Module

on channel B with no HPF link.

Note

: When using the BOSE series II-S EQ

card

s the HPF selection is made on the EQ card and not on the amplifier board.

In order to fit the EQ Cards you must remove the unit s

cover

(ENSURE THAT

ELECTRICAL POWER TO THE UNIT IS DISCONNECTED BEFORE REMOVING THE LID AND FITTING THE EQ CARDS)

For Bot

h B

1500

& B2000

Using a TORX T10 screwdriver (not supplied) remove the 12 TORX T10 screws that retains the

cover

. Remove the cover

.1 B1500

EQ card fitting

Locate the EQ Card sockets. Insert the EQ Card into the socket, noting the orientation of the mati

ng connector

Remove the bypass jumper link for the channel, (A = J7 o

r B = J6)

If you want to

activate

the high-pass filter function of the EQ Card, you should fit the

jumper that you previously removed from (J7 or J

6),

to the HPF pins for the channel

(A = J8 or B =

J5)

linking pins 2 and 3.

Note

: When using the BOSE series II-S EQ

cards the HPF selection is made on the EQ card and not on the amplifier board.

Page 15

7. BOSE

EQ Card

B2000

EQ card fitting

Locate the EQ Card sockets. Insert the EQ Card into the socket, observing the orientation of the mating connector.

Remove the bypass jumper link for the channel

J104 or

B =

J204) a

nd replace horizontally as shown below:

Bypass

active ch

annel A

EQ card

active

channel A

Jumper location channel A

Jumper location channel B

If you want to

activate

the high-pass filter func

tion of the EQ Card, you need to fit the jumper (that is supplied within the packaging that comes with the amplifier) to the link

HPF pins for the channel. Note: When using the BOSE series II-S EQ cards the

HPF selection is made on the EQ card and not on t

he amplifier board.

Front of

Amplifier

Front of

Amplifier

Page 16

BOSE

EQ Card

EQ card fitting f

or bridged mono operation

The Bose EQ card should be fitted into the channel A connector inside the amplifier and the input signal should be connected to input A. The bridge switch on the rear of the amplifier should be set to bridge mode. The output is then taken from the bridged output

Speakon

socket on the rear of the amplifier.

For Both B

1500

& B2000

-fit the unit s

cover

(BEFORE CONNECTING THE ELECTRICAL POWER

TO THE UNIT) using the 12 TORX T10 screw

s removed earlier.

For further information

about

BOSE equaliser cards or fitting the equaliser cards into

the B

1500

or B2000 power amplifiers

please

contact

your Bose supplier

Page 17

8. Technical Specification

TECHNICAL

SPECIFICATION B1500

POWER OUTPUT: Continuous output power, both channels driven:

Power values measur

ed at 230Vac

450

Watts per channel into 8 from

20Hz to 20 kHz, with no more than

0.03% THD

715

Watts per channel into 4 from

20Hz to 20 kHz

, with no more than

0.03% THD

1025

Watts per channel into 2 from

20Hz to 20 kHz, with no more than

0.03% THD

Bridged-mono operation:

1430

watts into 8 from 20Hz to

kHz, with less than 0.03% THD

2050

watts into 4 from 20Hz to

kHz, with less than

0.03% THD

Frequency response:

20Hz to 20 kHz (±0.5dB)

Input impedance:

20k balanced

Sensitivity:

1.38V rms for rated power into 4 (+5dBu)

Gain:

32 dB

THD 4 :

1 kHz

<0.008%

20Hz to 20 kHz

<0.03%

Power requirements:

230VAC/50-60Hz (Europe & UK Ampl

ifier set at 240Vac

)

CMRR:

> 90dB

Fusing:

Amp Slow-blow

(230V/50Hz)

Hum & noise

105dB

Damping factor 1 kHz:

>400 (at 8 )

Size (H x W x D):

88 mm x 482 mm x 428 mm

Net weight:

20 kg

TECHNICAL

SPECIFICATION

B2000

POWER OUTPUT: Continuous

output power,

both channels driven:

Power values measur

ed at 230Vac

560

watts per channel into 8 from

20Hz to 20 kHz, with no more than

0.03% THD

925

Watts per channel into 4 from

20Hz to 20 kHz, with no more than

0.03% THD

00 Watts per channel in

to 2 from

20Hz to 20 kHz, with no more than

0.03% THD

Bridged-mono operation:

185

0 watts into 8 from 20Hz to

kHz, with less than 0.03% THD

00 watts into 4 from 20Hz to

kHz, with less than 0.03% THD

Frequency response:

20Hz to 20 kHz (±0.5dB)

Input impedance:

20k balanced

Sensitivity:

1.75V rms for rated power into 4 (+7dBu)

Gain:

32 dB

THD 4 :

1 kHz

<0.008%

20Hz to 20 kHz

<0.03%

Power requirements:

230VAC/50-60Hz (Europe & UK Amplifier set at 240Vac

)

CMRR:

> 90dB

Fusing:

15 Amp Trip (230V/50Hz)

Hum & noise

105dB

Damping factor 1 kHz:

>400 (at 8 )

Size (H x W x D):

88 mm x 482 mm x 428 mm

Net weight:

25 kg

Page 18

9. Declaration of Conformity

DECLARATION OF CONFO

RMITY

We, the offerer:

Bose Corporation, The Mountain, Framingham, MA 01701-9168 USA

acknowledge

our responsibility, that the product:

Kind of equipment: Audio amplifier Type designation: B

1500

Professional Power Amplifier,

B2000 Professional Power Amplifier

in accordance with EMC Directive 89/336/EEC and Arti

cle 10(1) of the Directive,

is in compliance with the following norm(s) or document(s):

Technical Regulations: EN 55103-1:1996, EN55103-2:1996

in accordance with the Low Voltage Directive 73/23/EEC,

is in compliance with the following norm(s) or docu

ment(s):

Technical Regulations: EN/IEC60065:2002 7th Edition

01/07/2006

Bose G.P.

Nic Merks

Castleblaney Road

Vice President Europe

Carrickmacross

Authorized EU representative Co Monaghan Ireland

Page 19

How to reach the sales offices in Europ

Austria

Professional Systems Division, Austria Bose Ges.m.b.H., Business Park Vienna Wienerbergstrasse 7, 10 O.G. 1100 Wien, Österreich Telephone: 01

-60404340

Fax: 01-604043423

Belgium

Professional Systems Division, Belgium Bose N.V., Limesweg 2 3700 T

ongeren, België

Telephone: 012

-390800

Fax: 012

-390840

Denmark

Professional Systems Division, Denmark Bose Danmark A/S, Industrivej 7 PO Box 14, 2605 Brøndby, Danmark Telephone: 43437777 Fax: 43437818

France

Professional Systems Division, France Bose S.A.

, 12 rue de Témara 78100 Saint Germain en Laye Telephone: 01

-30616363

Fax: 01

-30616388

Germany

Professional Systems Division, Germany Bose GmbH, Max-Planck-Straße 36, 61381 Friedrichsdorf, Deutschland Telephone: 06172

-7104-0 Fax: 06172-7104-19 website: ww

w.bose.de

Ireland

Professional Systems Division, Ireland Bose GP, Castleblayney Road Carrickmacross, County Monaghan Republic Of Ireland Telephone: 042-9661988, Fax: 042-9661998

Italy

Professional Systems Division, Italy Bose SpA, Via della Magliana 876 00148 Roma, Italia Telephone: 066-5670802, Fax: 066-5680177 e-

mail: bose_italy@bose.com

The Netherlands

Professional Systems Division, The Netherlands Bose B.V., Nijverheidstraat 8 1135 GE Edam, Nederland Telephone: 0299

-390139

Fax: 0299

-390109

mail: infopro_nl@bose.com

Norway

Professional Systems Division, Norway Bose Filial till Bose A/S Danmark, Lerkev 58 2209 Kongsvinger, Norge Telephone: 062

-821560

Fax: 062

-821569

Poland

Bose Sp. z o.o. Galeria Mokotów ul. Wo oska 12 02-675 Warszawa Tele

phone: (22) 852 2928

Fax: (22) 852 2927

mail: warsaw_store@bose.com

website:

www.bose.pl

Switzerland

Professional Systems Division, Switzerland Bose AG, Hauptstrasse 134 4450 Sissach, Sweiz Telephone: 061-9757733 Fa

x: 061-9757744

Spain

Gaplasa S.A. Avda. Ingeniero Conde de Torroja 25 28022 Madrid, España Telephone: 91 748 29 60 Fax: 91 329 16 75 e-

mail: bose@maygap.com

Sweden

Professional Systems Division, Sweden Bose, filial till Bose A/S Danmark Johannefredsgatan

4, 43153 Mölndal, Sverige

Telephone: 031

-878850

Fax: 031

-274891

United Kingdom

Professional Systems Division, United Kingdom Bose Ltd., 1 Ambley Green Gillingham Business Park Gillingham, Kent ME8 0NJ, England Telephone: 0870-741

-4500, Fax: 0870-741-4545

mail: uk_pro@bose.com

website: www.bose.co.uk