B&K Reference 125.2 S2 User Manual Download Page 6

BACK PANEL

FUSE

FUSEFU

SE

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SEF

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FUS

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FUSE

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C AU T I O N : F O R C O N T I N U E D
P R O T E C T I O N A G A I N S T R I S K
O F F I R E R E P L A C E O N LY W I T H
S A M E T Y P E A N D R AT I N G .

C H A N N E L 2 O U T P U T

C H A N N E L 1 O U T P U T

C H A N N E L 1 I N P U T

C H A N N E L 2 I N P U T

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1 2 V D C
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R C A ( U N B A L A N C E D )

X L R ( B A L A N C E D )

R C A ( U N B A L A N C E D )

R C A I N P U T

X L R I N P U T

R C A I N P U T

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www.bkcomp.com

H i g h Pe r f o r m a n c e

A u d i o / V i d e o S y s t e m s

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1. AC Fuse Holder -

Holds the AC line fuse. This fuse is an 8 amp / 250 volt slow blow fuse. Replace only

with the same type and value fuse.

2. AC Input Receptacle -

For attaching the supplied AC power cord to the amplifier.

3. Speaker Outputs -

For connecting the speakers to the amplifier. Explained further on page 6.

4. Speaker Fuses -

For protection against amplifier damage in the case of shorted speaker wires. Replace

fuse with the same type and value 4 amp slow blow.

5. Balanced (XLR) Input -

For connecting signal patch cables (interconnects) from the preamplifier to the

amplifier. Explained further on page 5 and 6. 

6. Balanced/Unbalanced Input Select -

This switch is used to configure a SINGLE AMPLIFIER CHANNEL

for use with either balanced (XLR) or unbalanced (RCA) inputs. This switch controls the amplifier channel and
allows signal patch cables (interconnects) to be sourced from either balanced or unbalanced,
preamplifier/processor or outputs. Explained further on page 5 and 6. 

7. Unbalanced (RCA) Input - 

For connecting signal patch cables (interconnects) from the preamplifier to the

amplifier. Explained further on page 5 and 6. 

8. Amplifier Control Input/Output -

Provides remote switching of the amplifier's standby on/off feature.

Explained further on page 8.

4

Summary of Contents for Reference 125.2 S2

Page 1: ...B K Components Ltd User Manual REFERENCE 125 2 S2 Two Channel Amplifier 13746 0604...

Page 2: ...insures that you have a FACTORY WARRANTY on your B K Components Ltd product If you have any questions concerning your Factory Warranty call B K Components Ltd at 716 656 0026 Upgradability B K is one...

Page 3: ...S 1 SAFETY PRECAUTIONS 2 PURPOSE AND FUNCTION 3 BACK PANEL 4 INPUTS 5 INPUT OUTPUT CONNECTIONS 6 SYSTEM INSTALLATION 7 CONTROL TRIGGERS 8 TROUBLESHOOTING 9 SPECIFICATIONS Back Cover 1 Date of Purchase...

Page 4: ...gainst removing or altering feet Do not stack anything on top of the amplifier processor source etc Leave a minimum of 3 clearance from the top of the amplifier to the next shelf or component to insur...

Page 5: ...with minimum signal loss and degradation Five Way Binding Posts High quality binding posts accommodate up to 4 gauge wire Control Output One 3 5mm 1 8 10 12 VDC 200 mA output for controlling other am...

Page 6: ...place only with the same type and value fuse 2 AC Input Receptacle For attaching the supplied AC power cord to the amplifier 3 Speaker Outputs For connecting the speakers to the amplifier Explained fu...

Page 7: ...125 2 S2 These connectors accept balanced vol ume level output from the preamplifier s balanced output connectors RCA UNBALANCED There are two unbalanced RCA input connectors on the Reference 125 2 S...

Page 8: ...They are color coded for easy identification The positive RED post should always be connected to the speakers RED jack The negative BLACK post should always be connected to the speakers BLACK jack Sho...

Page 9: ...anel is in the off position and AC power is disconnected before making any connections Connect the wires from your speakers to the appropriate output channels on the amplifier It is essential that cor...

Page 10: ...OTORS WITH THE CONTROL OUT CIRCUIT If the control function is desired each unit in the system must remain connected The control is enabled when the 3 5mm jack is inserted into the CTRL IN For more inf...

Page 11: ...orts or overloading 4 Supply Control IN with a 5 24 Volt DC supply Page 8 5 Push in power switch No sound on some or all selected channels power on LED illuminat ed 1 Speaker leads loose or faulty 2 P...

Page 12: ...vity XLR Balanced 2 8 Volts Pin 1 Gnd Pin 2 In Pin 3 In Gain 28 3AV or 28dB AC Line Voltage 120 220 240 VAC optional switchable Level Controls No Binding Post Maximum Wire Gauge 4 AWG Balanced Inputs...

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