Professional Series
Model 4344MkII
Serial Number:
JBL Incorporated, Northridge, CA USA
ULTRA HIGH FREQUENCY LEVEL, dB
– 2.5
– 6.50
HIGH FREQUENCY LEVEL, dB
– 2.5
– 6.50
MID FREQUENCY LEVEL, dB
– 2.5
– 6.50
Level adjustments are provided to allow precision frequency response contouring. The midrange, high-frequency, and ultrahigh-frequency drivers may be fine-tuned for optimum sound in any listening room.
Dividing Networks
The job of the dividing network is to distribute the various frequencies to their respective transducers. The network is also designed to complement component location on the baffle. Slopes are chosen to match the exact response of each driver in its respective frequency range, as well as to ensure that the high-frequency transducers are adequately protected from dangerous low-frequency components.
For the 4344MkII system, we chose our Charge-Coupled Linear Definition™ Dividing Network. The inductors are all designed for high- current, low-distortion operation. All capacitors in the network are series/parallel connected and operated with D.C. bias. This effectively enables the capacitors to operate in “Class A” mode, which substantially increases sonic detail, resolution, and dynamics. The low-frequency section of the dividing network is mounted on a dedicated circuit board that separates both electrical and magnetic properties from that of the midrange and tweeter sections.
Additionally, the 4344MkII’s dividing network allows for passive, bi-wire, passive bi-amp, and full active bi-amp operation. For the full active bi-amp mode we recommend the use of a high-quality electronic crossover.
