B&K user manual Specifications, Reference 125.5 S2 & Reference 125.7 S2

Page 12

SPECIFICATIONS

REFERENCE 125.5 S2 & REFERENCE 125.7 S2

Power Rating: 8

125.5 / 125.7

125 watts

/

125 watts

Power Rating: 4

125.5 / 125.7

185 watts

/

185 watts

 

 

 

 

 

 

 

 

 

 

 

 

Number of Channels

 

5

 

/

7

 

 

 

 

 

 

 

 

Current (peak to peak)

30 Amps

/

30 amps

 

 

 

 

 

 

 

 

 

 

Dynamic Headroom

 

1.2 dB

/

1.2 dB

 

 

 

 

 

 

 

 

Total Harmonic Distortion (THD)

0.09 %

 

 

 

 

 

 

 

 

 

 

 

 

Signal to Noise (S/N)

 

95 dB

 

 

 

 

 

 

 

 

 

 

 

 

Input Impedance

 

33.2 k

 

 

 

 

 

 

 

 

 

 

 

 

Damping Factor (50 Hz)

180

 

/

180

 

 

 

 

 

 

 

 

Frequency Response

 

5 Hz - 45 kHz

 

 

 

 

 

 

 

 

 

 

 

Slew Rate

 

14 V / sec

 

 

 

 

 

 

 

 

 

 

Input Sensitivity RCA Unbalanced

1.0 Volt

 

 

 

 

 

 

Input Sensitivity XLR Balanced

2.0 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

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

Control Input

 

5 - 24 VDC

 

 

 

 

 

 

 

 

 

 

Control Output

 

10 - 12VDC

200mA

 

 

 

 

 

 

 

 

 

 

Dimensions in Inches

Width

17.00

(17.12)

 

(Cutout Dimensions)

Height

5.78

(5.90)

 

 

 

Depth

15.63

(16.75)

 

 

 

 

 

 

 

 

 

 

 

Shipping Weight

 

43 lbs

 

 

 

 

 

 

 

 

 

 

 

 

1220 watts max

 

Power Consumption

 

12.2 Amps max current draw

 

 

125 watts @ no input

 

 

 

 

 

 

 

 

AC Line - 12 Amp / 250 Volt Slow Blow

Replacement Fuses

 

Rails - 4 Amp / 250 Volt Time-Lag

 

 

Speakers - 4 Amp / 250 Volt Slow Blow

 

 

 

 

 

 

*AV - Amplified Voltage

Image 12
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.