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RB-1581 Bridged Mono Power Amplifi er

WARNING: 

There are no user serviceable parts inside. Refer all 

servicing to qualified service personnel.

WARNING: 

To reduce the risk of fire or electric shock, do not expose 

the unit to moisture or water. Do not expose the unit to dripping or 
splashing. Do not place objects filled with liquids, such as vases, on 
the unit. Do not allow foreign objects to get into the enclosure. If the 
unit is exposed to moisture, or a foreign object gets into the enclosure, 
immediately disconnect the power cord from the wall. Take the unit 
to a qualified service person for inspection and necessary repairs.

Read all the instructions before connecting or operating the component.

Keep this manual so you can refer to these safety instructions.

Heed all warnings and safety information in these instructions and on 
the product itself. Follow all operating instructions.

Clean the enclosure only with a dry cloth or a vacuum cleaner.

Do not use this unit near water.

You must allow a minimum 10 cm or 4 inches of unobstructed 
clearance around the unit. 

Do not place the unit on a bed, sofa, rug, or similar surface that could 
block the ventilation openings. If the unit is placed in a bookcase or 
cabinet, there must be ventilation of the cabinet to allow proper cooling.

Keep the component away from radiators, heat registers, stoves, or 
any other appliance that produces heat.

Rotel products are designed to comply with international 
directives on the Restriction of Hazardous Substances 
(RoHS) in electrical and electronic equipment and 
the disposal of Waste Electrical and  Electronic 
Equipment (WEEE). The crossed wheelie bin symbol 
indicates compliance and that the  products must be 
appropriately recycled or processed in accordance 
with these directives.

Important Safety Instructions

WARNING:

 

The rear panel power cord connector is the mains power 

disconnect device. The apparatus must be located in an open area 
that allows access to the cord connector.

The unit must be connected to a power supply only of the type and 
voltage specified on the rear panel. (USA: 120 V/60Hz, 
EC: 230V/50Hz)

Connect the component to the power outlet only with the supplied 
power supply cable or an exact equivalent. Do not modify the 
supplied cable. A polarized plug has two blades, with one wider than 
the other. A grounding plug has two blades plus a third grounding 
prong. These are provided for your safety. Do not defeat grounding 
and/or polarization safety provisions. If the supplied plug does not 
fit your outlet, please consult an electrician for replacement of the 
obsolete outlet. Do not use extension cords.

The main plug of the power cordset is a disconnect device of the 
apparatus. In order to completely disconnect the apparatus from 
the supply mains, the main plug of the power cordset should be 
unplugged from the mains (AC) outlet. The stand-by LED indicator 
will not be lit up to show the power cord is unplugged. The disconnect 
device shall remain readily operable.

Do not route the power cord where it will be crushed, pinched, bent, 
exposed to heat, or damaged in any way. Pay particular attention to the 
power cord at the plug and where the cord exits the back of the unit.

The power cord should be unplugged from the wall outlet during a 
lightning storm or if the unit is to be left unused for a long period 
of time.

This apparatus shall be connected to a main socket outlet with a 
protective earth connection.

Use only accessories specified by the manufacturer.

Use only with a cart, stand, rack, bracket or shelf 
system recommended by Rotel. Use caution when 
moving the unit in a stand or rack to avoid injury 
from a tip-over.

Use Class 2 wiring for speaker connections to ensure proper insulation 
and minimize the risk of electric shock.

Immediately stop using the component and have it inspected and/
or serviced by a qualified service agency if:

Ć

 

The power supply cord or plug has been damaged

Ć

  Objects have fallen or liquid has been spilled into the unit

Ć

  The unit has been exposed to rain

Ć

  The unit shows signs of improper operation

Ć

  The unit has been dropped or damaged in any way

RB-1581

1

2

3

Pin Assignments

Balanced Audio (3 pole XLR):
Pin 1: Ground / Screen
Pin 2: In phase / +ve / Hot
Pin 3: Out of phase / -ve / Cold

Summary of Contents for RB-1581

Page 1: ...Owner s Manual RB 1581 Bridged Mono Power Amplifier RB 1581...

Page 2: ...ype and voltage specified on the rear panel USA 120 V 60Hz EC 230V 50Hz Connect the component to the power outlet only with the supplied power supply cable or an exact equivalent Do not modify the sup...

Page 3: ...3 Figure 1 Controls and Connections RB 1581 SPEAKER IMPEDANCE COMBINED LOAD 4 OHMS MINIMUM 1 3 8 7 6 5 4 2...

Page 4: ...Figure 2 Hook up Illustration 96 1 8 HF LF OUTPUT 3UHDPS LEFT RIGHT 12V TRIG OUT 96 1 8 RB 1581 RB 1581 SPEAKER IMPEDANCE COMBINED LOAD 4 OHMS MINIMUM SPEAKER IMPEDANCE COMBINED LOAD 4 OHMS MINIMUM Bi...

Page 5: ...e Desactiva todos los componentes del equipo cajas ac sticas incluidas antes de conectar cualquier nuevo componente en el mismo Desactiva todos los componentes del equipo antes de cambiar cualquier co...

Page 6: ...otel s Balanced Design ensure superb sound quality High current capability allows the RB 1581 to drive the most demanding loudspeakers A Few Precautions WARNING To avoid potential damage to your syste...

Page 7: ...it should be plugged directly into a 3 pin polarized wall outlet Do not use an extension cord A heavy duty multi tap power outlet strip may be used if it and the wall outlet is rated to handle the cu...

Page 8: ...nces In general heavier wire will improve the sound For best performance you may want to consider special high quality speaker cables Your authorized Rotel dealer can help in the selection of cables f...

Page 9: ...CTION INDICATOR lights when the RB 1581 protection circuits have shut off the amplifier Typically this occurs only when the ventilation openings are blocked when there is faulty speaker wiring or afte...

Page 10: ...10 RB 1581 10cm 4in RoHS WEEE 120V 60Hz 230V 50Hz 220V 50Hz 2 RB 1581 1 2 3 3 1 2 3...

Page 11: ...11 RB 1581 1 RB 1581 SPEAKER IMPEDANCE COMBINED LOAD 4 OHMS MINIMUM 1 3 8 7 6 5 4 2...

Page 12: ...12 RB 1581 2 HF LF OUTPUT LEFT RIGHT 12V TRIG OUT RB 1581 RB 1581 SPEAKER IMPEDANCE COMBINED LOAD 4 OHMS MINIMUM SPEAKER IMPEDANCE COMBINED LOAD 4 OHMS MINIMUM...

Page 13: ...1581 500W 8 4 4 8 8 4 RB 1581 RB 1581 RB 1581 RB 1581 RB 1581 RB 1581 RB 1581 RB 1581 RB 1581 10 4 10 1 11 2 12 12 13 13 13 13 13 14 8 14 1 14 2 14 5 14 12V 4 14 3 14 14 14 14 14 14 6 15 15 15 7 15 15...

Page 14: ...B 1581 AC RB 1581 RB 1581 RB 1581 8 RB 1581 1 12V 2 RB 1581 5 RB 1581 12V TRIGGER 12V ON TRIGGER IN 3 5 12V 12V 12V POWER SWITCH ON OFF 12V 4 IN 12V 3 5 ON 3V 30V OUT 12V 3 5 IN 12V 12V 3 2 RB 1581 RC...

Page 15: ...20Hz 20kHz 8 0 03 60Hz 7kHz 4 1 0 03 20Hz 20kHz 8 800 RCA 12k 1 6 volts XLR 100k 2 5 volts RCA 32 dB XLR 28 dB 1db 10 Hz 100k Hz 4 120 V 60 Hz 230 V 50 Hz 220 V 50 Hz 550 W x x 431 x 144 x 407 mm 17...

Page 16: ...Concord Street North Reading MA 01864 2699 USA Phone 1 978 664 3820 Fax 1 978 664 4109 Rotel Europe Dale Road Worthing West Sussex BN11 2BH England Phone 44 0 1903 221 761 Fax 44 0 1903 221 525 Rotel...

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