Pioneer S-31B-LR-K: Specifications

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English

Specifications

Enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . .  Bass-reflex bookshelf type

Configuration  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-way

Woofer/Tweeter . . . . . . . . . . . . . . . .  10 cm (4 in.) cone/2.5 cm (1 in.) dome

Impedance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6 

Ω

Frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45 Hz to 40 kHz

Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 dB (2.83 V)

Maximum input power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 W

Crossover frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 kHz

Exterior dimensions  . . . . . . .  152 (W) mm x 235 (H) mm x 197 (D) mm

6 (W) in. x 9 

1

/

4

 (H) in. x 7 

3

/

4

(D) in.

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2.5 kg (5 lbs 8 oz.)

Supplied accessories

Speaker cable (7 m)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2

Safety metal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2

Screw (for safety metal) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2

Non-skid pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2 set

Warranty card

Operating instructions (this document)

• The S-31B-LR is shipped with two speaker systems included.

• Specifications and design subject to possible modification 

without notice, due to improvements.

is a trademark placed on a product with Pioneer’s Phase 

Control technology. This technology enables high-grade sound 

reproduction through each component by improving overall 

phase matching.

Published by Pioneer Corporation.

Copyright © 2009 Pioneer Corporation.

All rights reserved.

S001_En

Selecting fine audio equipment such as the unit 

you’ve just purchased is only the start of your 

musical enjoyment. Now it’s time to consider how 

you can maximize the fun and excitement your 

equipment  offers. This manufacturer and the 

Electronic Industries Association’s Consumer 

Electronics Group want you to get the most out of 

your equipment by playing it at a safe level. One that 

lets the sound come through loud and clear without 

annoying blaring or distortion-and, most importantly, 

without affecting your sensitive hearing.

Sound can be deceiving. Over time your hearing 

“comfort level” adapts to higher volumes of sound. 

So what sounds  “normal” can actually be loud and 

harmful to your hearing. Guard against this by 

setting your equipment at a safe level BEFORE your 

hearing adapts.

To establish a safe level: 

•  Start your volume control at a low setting.

•  Slowly increase the sound until you can hear it 

comfortably and   clearly, and without distortion.

Once you have established a comfortable sound 

level:

•  Set the dial and leave it there.

Taking a minute to do this now will help to prevent 

hearing damage or loss in the future. After all, we 

want you listening for a lifetime.

We Want You Listening For A Lifetime 

Used wisely, your new sound equipment will 

provide a lifetime of fun and enjoyment. Since 

hearing damage from loud noise is often 

undetectable until it is too late, this manufacturer 

and the Electronic Industries Association’s 

Consumer Electronics Group recommend you avoid 

prolonged exposure to excessive noise. This list of 

sound levels is included for your protection.

Decibel

Level Example

  30 

Quiet library, soft whispers

 40  Living room, refrigerator, bedroom away from traffic

  50 

Light traffic, normal conversation, quiet office

  60 

Air conditioner at 20 feet, sewing machine

  70 

Vacuum cleaner, hair dryer, noisy restaurant

 80  Average city traffic, garbage disposals, alarm clock 

at two feet.

THE FOLLOWING NOISES CAN BE DANGEROUS  

UNDER CONSTANT EXPOSURE

 90  Subway, motorcycle, truck traffic, lawn mower

  100  Garbage truck, chain saw, pneumatic drill

  120  Rock band concert in front of speakers, 

thunderclap

  140  Gunshot blast, jet plane

  180  Rocket launching pad

Information courtesy of the Deafness Research Foundation. 

For U.S. model

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