Technical Manual

S312

Studio Series

ACOUSTIC & ELECTRICAL SPECIFICATIONS:

• Nominal Impedance

8 ohms

• Max Amp Power

250 watts

• Frequency Response

35 Hz - 20 kHz

• Sensitivity

92 dB (1 watt @ 1 meter)

• Crossover Frequency

750 Hz, 3000 Hz

SYSTEM COMPONENTS:

• Enclosure

S312 (Not for sale)

• Grille

335147-002

• Low Frequency Transducer

12PolyPlasShielded

 

(335151-001)

DC Resistance

5.6 ohms ±10%

• Mid Frequency Transducer

4” PolyPlasShielded

 

(335439-001)

DC Resistance

4.3 ohms ±10%

• High Frequency Transducer

1” (25mm) Titanium dome

 

Shielded (335663-001)

DC Resistance

3.4 ohms ±10%

• Crossover Network

335412-001

PACKAGING

Upper/Lower Foam 335408-001

Microfoam (2pcs.)

OWNER'S

MANUAL

Owner's Manual 335404-001

Warranty Card 331994-001

Survey Card 331384-001

Series

 

S312Studio

Outer Carton

 

335403-001

AURAL SWEEP TEST SPECIFICATIONS:

• A. System Aural Sweep Test

6.0V

Input 30

Hz to 20 kHz

• B. L.F. Aural Sweep Test

6.0V

Input 30

Hz to 1 kHz

• C. M.F. Aural Sweep Test

4.0V

Input 500 Hz to 4 kHz

• D. H.F. Aural Sweep Test

2.83V Input 3 kHz to 20 kHz

PHYSICAL SPECIFICATIONS:

• Enclosure dimensions:

41” x 16” x 12⁷⁄₈” (H x W x D)

 

1041mm x 406mm x 327mm

• Weight

68 lbs. /31kg Each

WARRANTY:

• Refer to Warranty Statement packed with each product.

WIRING DIAGRAM

Driver

 

 

High Frequency

– +

Crossover Network

335663-001

 

335412-001

 

 

YELLOW

YELLOW/BLACK

Driver Mid.Frequency 335439-001

WHITE

WHITE/BLACK

Driver

Low Frequency

335151-001

GREEN

GREEN/BLACK

S312 SCHEMATIC

 

 

L1

 

 

 

 

 

 

RED

 

3.5mH

 

 

GREEN

 

 

 

 

 

 

250

+

+IN

 

 

C1

 

 

 

 

 

 

 

C2

 

 

 

 

 

 

50F

 

0.01

F

 

 

INPUT

 

 

100V

 

250V

L.F.

 

 

 

 

 

 

 

 

 

 

 

R1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.4/10W

 

 

 

 

BLACK

 

 

 

 

BLK/GREEN

205

–IN

 

 

 

 

 

 

 

 

C3

L2

R2

 

 

 

 

20

F/100V

400H

1.2/10W

WHT/BLACK

 

 

 

 

 

 

 

110

 

 

 

 

 

 

 

 

 

 

 

 

R3

 

 

 

 

 

 

 

 

40/5W

 

M.F.

 

 

 

C4

 

 

 

 

 

 

 

 

 

WHITE

 

 

0.01F/250V

 

 

205

+

 

 

 

 

 

 

 

 

 

C5

R4

 

 

 

 

 

6

F/100V

0.62/10W

 

YELLOW

 

 

 

 

 

 

 

205

+

 

 

 

 

 

 

 

 

 

 

 

R5

L3

 

 

 

 

 

 

 

220H

 

H.F.

 

 

 

 

 

10/5W

 

 

 

 

C6

 

 

 

 

 

 

 

 

 

YEL/BLK

 

 

0.01/250V

 

 

110

 

 

 

 

 

 

 

JBL Consumer Products, Inc. 250 Crossways Park Dr., Woodbury, New York 11797

02/00

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JBL S312 technical manual Packaging, Wiring Diagram

S312 specifications

The JBL S312 is a prominent speaker model that exemplifies the brand's innovative design and dedication to audio quality. Renowned for its robust performance and superior sound reproduction, the S312 caters to both audiophiles and casual listeners seeking an immersive audio experience.

One of the main features of the JBL S312 is its powerful dual 12-inch low-frequency drivers. These drivers are engineered to deliver deep, resonant bass that enhances the clarity and richness of music, movies, and sports events. Complementing the woofers, the speaker also incorporates a 1-inch titanium-laminate dome tweeter, which ensures crisp and precise high-frequency levels. This combination allows the S312 to produce a balanced sound profile, making it ideal for a variety of listening environments.

The design of the JBL S312 is both sleek and sturdy, featuring a modern aesthetic that can seamlessly fit into any room decor. The cabinet is constructed with high-quality materials to minimize distortion and vibration while supporting the speakers' overall performance. The durability of the design ensures that the S312 can withstand the rigors of everyday use.

In addition to its physical attributes, the S312 uses JBL's advanced technologies to enhance sound quality. The speaker features the patented JBL Image Control Waveguide, which optimizes the sound dispersion. This technology allows listeners to enjoy a more coherent soundstage, ensuring that audio clarity is maintained even from off-axis listening positions. As a result, whether you’re hosting a party or enjoying a quiet evening at home, the S312 provides an optimal listening experience.

Another characteristic worth noting is the versatility of the S312. It can easily connect to various audio sources, including receivers, televisions, and mobile devices, thanks to its compatible inputs. This flexibility makes it easy for users to customize their audio setup.

Overall, the JBL S312 stands out for its combination of powerful drivers, innovative technologies, and aesthetic design. With its ability to deliver high-quality sound across diverse genres and applications, it remains a favorite among those who appreciate excellence in audio performance. Whether you're watching movies, playing music, or gaming, the JBL S312 promises to elevate your auditory experience to new heights.