B&K 200.7 S2, 200.5 S2 user manual Care and Cleaning, Troubleshooting

Models: 200.5 S2 200.7 S2

1 12
Download 12 pages 6.04 Kb
Page 11
Image 11

 

 

TROUBLESHOOTING

 

9

 

 

 

 

 

 

PROBLEM

 

POSSIBLE CAUSE

 

POSSIBLE SOLUTION

 

 

 

 

 

 

 

No sound

1.

Power cord not plugged in.

1.

Reconnect power cord.

 

(power 'on' LED not illu-

2.

Power off at AC source.

2.

Check AC switch or fuse.

 

minated).

3. AC power inlet fuse blown or

3. Check for shorts or overloading.

 

 

faulty.

4. Supply Control IN with a 5-24 Volt

 

 

4.

Control voltage not activated.

DC supply (Page 8).

 

 

5.

Power switch in off position

5.

Push in power switch.

 

 

(out).

 

 

 

 

 

 

 

 

 

 

 

 

 

No sound on some or all

1.

Speaker leads loose or faulty.

1. Tighten, repair or replace cable.

 

selected channels

2.

Preamp to amp cables loose

2. Tighten, repair or replace cable.

 

(power 'on' LED illuminat-

or faulty.

3. Tighten, repair or replace cable.

 

ed).

3.

Source to line stage cables

4. Check all source settings.

 

 

loose or faulty.

5. Check all speaker fuses and replace

 

 

4.

Line stage or source not cor-

if blown. Replace fuse with same type

 

 

rectly selected.

and value.

 

 

5. Speaker fuse blown.

6.

Press balanced button to switch bal-

 

 

6.

Balanced button “in” when

anced inputs off (out position).

 

 

using RCA’s.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sound lacks direction

1.

Speakers connected out of

1.

Check all connections making sure

 

weak bass.

phase.

that cables are connected (+) to (+) and

 

 

 

 

(-) to (-).

 

 

 

 

 

 

 

 

 

 

 

 

 

Loud hum or buzz on

1.

Poor ground connection in

1.

Check all connectors and repair as

 

one or more channels.

inter-connect cables.

necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

Channel sounds

1.

Blown rail fuse.

1.

WARNING: Blown rail fuses can be

 

distorted and low output.

 

 

an indication of a larger problem.

 

 

 

 

Replace ONLY with same type and

 

 

 

 

value. If fuses continue to blow, con-

 

 

 

 

sult a service professional.

 

 

 

 

Rail fuses require internal service.

 

 

 

 

 

 

 

***Note: If unit continues to blow power fuses, DO NOT USE A HIGHER RATED FUSE, please con- tact customer service to have the unit serviced. When servicing fuses always disconnect AC power before replacing.

CARE AND CLEANING

Under normal use, the amplifier will not require any special care. Over time you may wish to clean the exterior of the unit by wiping it with a cloth to remove any dirt or dust that accumulates on it. Unplug the amplifier and be sure that it has completely powered down before cleaning. Do not let any liquid enter the amplifier through the vents in the top cover. LIQUIDS CONDUCT ELECTRICI- TY!!! You may clean the connectors on the back panel with isopropyl alcohol annually.

Page 11
Image 11
B&K 200.7 S2, 200.5 S2 user manual Care and Cleaning, Troubleshooting

200.5 S2, 200.7 S2 specifications

B&K 200.7 S2 and B&K 200.5 S2 are both high-performance amplifiers from the renowned manufacturer Bowers & Wilkins, known for their premium audio products. These models represent the culmination of advanced engineering and innovative technology, providing an exceptional listening experience for audiophiles and casual listeners alike.

The B&K 200.7 S2 is a seven-channel power amplifier designed to deliver robust power and fidelity. It features a sophisticated Class A/B amplification topology, which balances efficiency and sound quality. This model boasts an impressive power output, ensuring that even the most demanding home theater setups receive adequate amplification without distortion. The 200.7 S2 employs a high-current design that enhances dynamic range, making it ideal for revealing even the subtlest details in music and film soundtracks.

On the other hand, the B&K 200.5 S2 is a five-channel amplifier that shares many of the design philosophies of its larger counterpart. It also utilizes a Class A/B amplifier configuration, offering a reliable and high-quality sound reproduction. The 200.5 S2 is particularly well-suited for smaller home theater systems or as part of a multi-room audio setup. Its efficient design helps to manage heat, making it a viable option for extended listening sessions.

Both models incorporate advanced features such as independent gain controls for each channel, allowing for precise tuning to match various speaker sensitivities. This customization enables users to maximize their audio system’s potential, whether it’s for two-channel music or multi-channel home theater applications. Additionally, the amplifiers come equipped with high-quality binding posts and balanced XLR inputs, ensuring secure connections and minimal interference.

In terms of build quality, B&K amplifiers are known for their durable construction and sleek aesthetics. With a minimalist design and robust chassis, these amplifiers exude sophistication while integrating seamlessly into any audio setup.

Overall, the B&K 200.7 S2 and 200.5 S2 are excellent choices for anyone looking to upgrade their audio experience. Their powerful performance, flexibility, and attention to detail make them standout options in the competitive landscape of high-end audio equipment. Whether for critical listening or enlivening movie nights, these amplifiers bring music and sound to life like never before.