B&K 125.5 S2, 125.7 S2 user manual Speaker Outputs, INPUT/OUTPUT Connections

Page 8

6

INPUT/OUTPUT CONNECTIONS

Use either RCA unbalanced or XLR balanced to connect the preamplifier to amplifier.

SURROUND BACK LEFT

C O N T R O L I / O

 

 

CONTROL IN ALLOWS AMPLIFIER

 

 

OPERATION WHEN A 5-24V SIGNAL

 

IS APPLIED WITH A 3.5mm MINI JACK

 

 

 

 

 

INPUT 1

C T R L

DNUO

WER

BLE

 

I N

WLOPO

ELRTNA

 

 

R

V

C

X L R

C T R L

EG

+12

12V

( B A L A N C E D )

O U T

EV

G

+

 

1 2 V D C

 

2 0 0 m A

LE

IN

IP

 

S

R

T

 

R C A

( U N B A L A N C E D )

BUTTON

OUT

RCA Unbalanced Connections

SURROUND LEFT

CENTER

 

FRONT LEFT

 

FRONT RIGHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INPUT 2

INPUT 3

INPUT 4

INPUT 5

 

X L R ( 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 ( U N B A L A N C E D )

 

BUTTON

 

BUTTON

 

OUT

 

OUT

OR

SURROUND RIGHT

SURROUND BACK RIGHT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INPUT 6

 

 

INPUT 7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X L R ( B A L A N C E D )

R C A ( U N B A L A N C E D )

BUTTON

OUT

C O N T R O L I / O

 

 

CONTROL IN ALLOWS AMPLIFIER

 

 

OPERATION WHEN A 5-24V SIGNAL

 

IS APPLIED WITH A 3.5mm MINI JACK

 

 

 

 

INPUT 1

C T R L

DNUO

WER

BLE

X L R

I N

WLOPO

ELRTNA

 

R

V

C

( B A L A N C E D )

C T R L

EG

+12

12V

 

O U T

EV

G

+

 

1 2 V D C

 

2 0 0 m A

LE

IN

IP

 

S

R

T

 

R C A

( U N B A L A N C E D )

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INPUT 2

 

INPUT 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X L R ( B A L A N C E D )

R C A ( U N B A L A N C E D )

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INPUT 4

 

INPUT 5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X L R ( B A L A N C E D )

R C A ( U N B A L A N C E D )

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INPUT 6

 

INPUT 7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X L R ( B A L A N C E D )

R C A ( U N B A L A N C E D )

BUTTON

PUSHED IN

BUTTON

BUTTON

BUTTON

PUSHED IN

PUSHED IN

PUSHED IN

 

SURROUND LEFT

CENTER

SURROUND RIGHT

SURROUND BACK LEFT

FRONT LEFT

FRONT RIGHT

SURROUND BACK RIGHT

XLR Balanced Connections

SPEAKER OUTPUTS

Binding posts are provided for speaker connections. There is one pair provided for each amplifier channel output. They are designed to accept a banana-type plug, spade-lug connector (shown right), terminal posts, or bare wire. They are color coded for easy identification. The positive (+) RED post should always be connect- ed to the speakers (+) RED jack. The negative (-) BLACK post should always be

connected to the speakers (-) BLACK jack.

Spade Connector

Banana Jack

 

 

Shown right is the ampli- fier to speaker connec- tions (4 gauge (AWG) wire maximum).

CONTROL IN ALLOWS AMPLIFIER

OPERATION WHEN A 5-24V SIGNAL

IS APPLIED WITH A 3.5mm MINI JACK

 

 

 

 

WER

 

 

 

 

 

 

 

 

 

 

C T R L

 

BLE

 

 

 

C H A N N E L 1 I N P U T

OUND

 

X L R

I N

LOW PO

TRL ENA

( B A L A N C E D )

 

 

 

 

 

 

 

 

R

V

C

 

 

 

 

 

 

 

 

C T R L

G

+12

 

12V

 

R C A

 

 

 

 

 

O U T

E

 

( U N B A L A N C E D )

 

 

 

 

EV

 

 

+

 

 

 

 

1 2 V D C

G

 

 

 

 

 

 

 

 

 

2 0 0 m A

LE

NI

 

IP

 

 

 

 

 

 

 

 

 

 

 

S

R

 

T

 

 

 

 

 

 

 

 

C O N T R O L I / O

 

 

 

 

 

 

 

 

F U S E

 

 

 

 

 

 

 

 

 

F

U

SE

C A U T I O N : F O R C O N T I N U E D

 

 

 

E

 

 

F

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

 

 

U

U

E

S

S A M E T Y P E A N D R AT I N G .

 

 

 

 

 

F

 

C H A N N E L 1 O U T P U T

P O S I T I V E

N E G AT I V E

 

 

 

 

 

 

 

C A U T I O N

 

 

 

R I S K O F E L E C T R I C S H O C K

A C L I N E

D O N O T O P E N

C H A N N E L 2 I N P U T

C H A N N E L 3 I N P U T

 

 

 

X L R ( B A L A N C E D )

 

 

 

 

 

 

R C A ( U N B A L A N C E D )

 

 

 

 

F

USE

 

F

USE

E

 

F

E

 

F

 

 

U

 

 

U

S

 

S

 

U

S

U

S

 

 

F E

 

 

 

F E

 

C H A N N E L 2 O U T P U T

C H A N N E L 3 O U T P U T

P O S I T I V E

N E G AT I V E

P O S I T I V E

N E G AT I V E

S E R I A L #

C H A N N E L 4 I N P U T

C H A N N E L 5 I N P U T

 

 

 

X L R ( B A L A N C E D )

 

 

 

 

 

 

R C A ( U N B A L A N C E D )

 

 

 

 

F

USE

 

F

USE

E

 

F

E

 

F

 

 

U

 

 

U

S

 

S

 

U

S

U

S

 

 

F E

 

 

 

F E

 

C H A N N E L 4 O U T P U T

C H A N N E L 5 O U T P U T

P O S I T I V E

N E G AT I V E

P O S I T I V E

N E G AT I V E

C H A N N E L 6 I N P U T

C H A N N E L 7 I N P U T

 

 

 

X L R ( B A L A N C E D )

 

 

 

 

 

 

R C A ( U N B A L A N C E D )

 

 

 

 

F

USE

 

F

USE

E

 

F

E

 

F

 

 

U

 

 

U

S

 

S

 

U

S

U

S

 

 

F E

 

 

 

F E

 

C H A N N E L 6 O U T P U T

C H A N N E L 7 O U T P U T

P O S I T I V E

N E G AT I V E

P O S I T I V E

N E G AT I V E

H i g h P e 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

H a n d - M a d e i n t h e U . S . A .

(+))-(

(+))-(

(+))-(

(+))-(

(+))-(

(+))-(

(+))-(

Surround

Surround Front Left

Center

Front Right Surround

Surround

Back Left

Left

 

Right

Back Right

Image 8
Contents Reference 125.5 S2 Reference 125.7 S2 Accessories Included Table of Contents Installation Considerations 2SAFETY PrecautionsFeatures Purpose and FunctionDesign and Construction Purpose and FunctionBack Panel A N N E L 6 I N P U TInputs XLR BalancedRCA Unbalanced InputsSpeaker Outputs INPUT/OUTPUT ConnectionsSystem Installation Making the ConnectionControl Triggers Connects to Preamp control outputCare and Cleaning TroubleshootingSpecifications Reference 125.5 S2 & Reference 125.7 S2

125.7 S2, 125.5 S2 specifications

The B&K 125.7 S2 and B&K 125.5 S2 are part of the renowned Bowers & Wilkins speaker series, celebrated for their exceptional audio quality and innovative technologies. These speaker models are designed for both audiophiles and casual listeners who crave an immersive sound experience in their home environments.

The B&K 125.7 S2 features a 3-way design, incorporating a 1-inch aluminum dome tweeter, a 5-inch Kevlar midrange driver, and two 7-inch paper bass drivers. This configuration ensures rich, detailed highs, a clear midrange, and powerful low frequencies, delivering a balanced sound signature that excels across various musical genres and listening scenarios. The speaker's frequency response ranges from 45 Hz to 20 kHz, providing a wide soundstage that captures both subtle nuances and dynamic peaks in audio playback.

Equipped with the latest Bowers & Wilkins technologies, the B&K 125.7 S2 utilizes the advanced Flowport technology, which minimizes turbulence and enhances bass output. This innovation allows for cleaner, more precise low-frequency reproduction, making it ideal for both music and movie soundtracks. Additionally, the tweeter's decoupled design reduces distortion, ensuring that high-frequency details are reproduced accurately.

On the other hand, the B&K 125.5 S2 is similarly built but features a slightly compact design, making it an excellent choice for smaller spaces or more discreet setups. It encompasses a 2-way configuration that includes a 1-inch aluminum dome tweeter paired with a 5-inch Kevlar midrange driver. While it lacks the additional bass drivers found in the 125.7 S2, the 125.5 S2 compensates with an impressive frequency response of 50 Hz to 20 kHz, delivering a punchy and engaging audio experience.

Both models are crafted with premium materials, including an elegantly finished cabinet that not only enhances their aesthetic appeal but also contributes to acoustic performance by minimizing resonance. Their versatility allows for easy integration into various audio systems, making them suitable for listening at home or setup in a dedicated home theater environment.

In conclusion, the B&K 125.7 S2 and B&K 125.5 S2 are exemplary audio solutions that reflect Bowers & Wilkins' commitment to quality and innovation. With their respective designs and advanced technologies, they provide audio enthusiasts with the clarity, depth, and precision needed for an exceptional listening experience.