JBL Synthesis S3900 - Manual (Page 7)

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To bi-wire the S3900, first remove the connector jumper bars as shown in the illustration.
A. Unscrew
all four caps
B. Remove
jumpers
If you’re bi-wiring with a single stereo power amplifier, connect the speakers according to the following illustration.
HF/UHF
Connection
Amplifier
Right
Ch.
Left
Ch.
HF/UHF
Connection
LF Connection LF Connection
Right
Speaker
Left
Speaker
If you’re bi-amping or bi-wiring with two stereo power amplifiers, connect the speakers according to the following
illustration.
HF/UHF
Connection
Amplifier 1
Amplifier 2
Right
Ch.
Right
Ch.
Left
Ch.
Left
Ch.
HF/UHF
Connection
LF
Connection
LF
Connection
Right
Speaker
Left
Speaker
In either case, follow the instructions for the different connector types in Basic Single-Wire Connection, on page 4.
NOTE: For more information about various speaker-wire and connection options, contact your local JBL dealer.
CARINg FOR YOUR SPEAkERS
Wipe the cabinet with a clean, dry cloth to remove dust. A damp cloth may dull the cabinet’s finish. Do not use volatile
liquids such as benzene, paint thinner or alcohol on the cabinet.
• Do not spray insecticide near the cabinet.
• To remove dust from the grille fabric, use a vacuum cleaner set to low suction.
• Do not wash the grille in water, as water may fade the grille’s color or make it uneven.
• Never apply suction or pressurized air to the high-frequency or ultrahigh-frequency horn openings.
• If the surface of the low-frequency driver cone becomes dusty, you can carefully sweep it clean with a soft, dry
calligraphy brush or paint brush. Do not use a damp cloth.
• The grille only fits on the speaker one way, so if you remove the grille, please note the proper orientation of the grille
pins before re-installing the grille on the speaker.
SPECIFICATIONS
JBL ® S3900 FLOORSTANDING SPEAKER
Speaker type: 3-way floorstanding
Low-frequency transducer: Two 250mm (10") pure pulp cones with ferrite motor
assemblies
High-frequency transducer: 45mm (1-3/4") compression driver with an Aquaplas-treated
pure titanium diaphragm and neodymium motor assembly
on a SonoGlass
® Bi-Radial ® horn
Ultrahigh-frequency transducer: 19mm (3/4") compression driver with a pure titanium
diaphragm and neodymium motor assembly on a
SonoGlass
® Bi-Radial ® horn
Maximum recommended amplifier power: 250 watts
Frequency response: 32Hz – 40kHz (–6dB)
Nominal impedance: 6 ohms
Sensitivity: 92dB (2.83V/1m)
Crossover frequencies: 850Hz, 12kHz
Enclosure type: 25mm (1")-thick MDF stock, ported
Connector type: Dual gold-plated five-way binding posts
Dimensions (H x W x D): 1001mm x 370mm x 368mm
(39-13/32" x 14-9/16" x 14-1/2")
Weight: 39.2kg (86.3 lb)