One-mm (18 AWG
3
insulated wire ts the minimum size
recommended tor loudspeaker connections up to 15 m (50 ft)
Heavier gauge wire ;S recommended for greater distances
* **-mm (16 AWG) up to 30 m [100 ft) and 1 6-mm (14 AWG) up
_ , 0 m ( 2 0 0 ft).
System Adjustment
Bi-amplification ol the 4350 allows utilization ol two moderately
powered amplifiers rather than a single, large amplifier. Since
the power density demanded from each amplifier is reduced in
D-amplification, each power source is less likely to approach its
limits of distortion, even though considerable volume levels are
achieved The low frequency loudspeakers operate to 250 Hz
and require an attenuation rate of 12 dB per octave below and
above the crossover frequency Transition may be accomplished
with a J B L 5233 (single channel) or 5234 [dual channel)
Electronic Frequency Dividing Network or with one ot several
electronic crossovers or filtering oevices commercially available
The system can be balanced subjectively using familiar
program material or, more accurately, with white noise,
pink noise or banos of noise. Balance can be determined
electronically using pink noise and adjusting the output voltage
levels of the tow and high frequency amplifiers so that ihey are
equal
TO
each other, measureo at the respective input terminals
of the 4350. The ultra-high frequency level control can be
adjusted subjectively or by measuring output using pink noise
as source materia
1
.. If low-level crossove
r
networks are to
be utilized for the high frequency ana ultra-high frequency
transitions, complex acoustical testing apparatus will be required
for prooer balancing of the resultant system Therefore, the 4350
is not fitted with terminal connections for any configuration
other than the standard louospeaker system described in this
publication.
Component installation in the 4350 enclosure.left-nand configuration
"wn. Note vertical orientation ol the ultra-high ireouency t^ansOucer
action stot.
System and neiwork connections
viewed Irom rear ol P e enclosure
