JBL Control 23 User Manual

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HORIZONTAL
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a
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• Boundary Loading - This is a good trick for increasing bass
without taxing the amplifier. It is also possible to make a system
sound too "muddy", so use caution. If you move the speaker from
open space to a wall , bass notes will increase by + 3d B. If you
move it to a 2 boundary corner, another t3dB ... and another t3dB
for a three boundary corner! (see diag. 4).
VERTICAL
• High Frequency Coverage - High
frequencies go where you point them .
Simply aim the center axis of the
speaker into the plane slightly above
the listening area. The go o x 90 °
horns of the Control ® Contractor
Series disperse the high notes by 45 °
off axis in every direction. For large or
unusually shaped rooms, divide the
area into zones and let the horn
patterns dictate the spacing between
the speakers (see diag . 5).
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8
TYPICAL DAISY CHAIN CONFIGURATION
~ ~ - ·-- _ - ___ -_- __ - ..... -.- ...... - ...... - __ -_- ___ - ___ - ___ -_- _ -- ~ - P, - ~,J ~~= ~ =:i
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TYPICAL "HOME RUN" CONFIGURATION
• Daisy Chaining- It is most common, easiest, and cheapest
to run wires from the amp to a speaker, then from that
speaker to another (see diag. 6A).
•Home Runs - If you desire true stereo L & R from each
listening position, "home runs" are best, from the amplifier
directly to each speaker (see diag. 68).
__ _.L.
__ ._-
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--+--
1
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JBL Control 23 Specifications

General

Impedance	8 ohms
Color	Black or white
Power Capacity	50 W Continuous Program Power; 25 W Continuous Pink Noise
Sensitivity	86 dB SPL, 1W @ 1m
HF Driver	19 mm (.75 in) titanium-laminate
Connectors	Spring terminals
Enclosure Material	High-impact polystyrene
Mounting	Wall
LF Driver	polypropylene coated paper