Instruction/ maintenance manual of the product 4344MKII JBL
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PROFESSIONAL SERIES LOUDSPEAKER SYSTEM 4344MkII A NEW ST ANDARD FOR A NEW CENTUR Y 4344 MK 11 Manual 7/21/98 3:18 PM Page 16.
JBL is part of the Harman International family of audio companies, a group with a common purpose: combining technology with a love of music to manufacture audio products that provide new levels of satisfaction, perform- ance and value. T o promote diversity and creativity , JBL operates independently in research and development.
Low-Frequency T ransducer 4 Mid-Frequency T ransducer 5 High-Frequency T ransducer 5 Ultrahigh-Frequency T ransducer 5 Dividing Networks 6 Battery Replacement 7 Placement 8 Speaker Connections 9 Bi-W .
No. 4 W ith the Professional Series 4344MkII Loudspeakers, JBL combines the most advanced technology with a classic JBL design. These speakers continue the longstanding tradition of precise studio monitor sound for which JBL is famous.
The 4344MkII also features a 10" (254mm) mid-frequency transducer . The voice coil is 3" (76mm) in diameter and wound on edge from flat copper ribbon wire on a thermoset composite ™ form.
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.
The battery should be replaced approximately every 2 years. This is accomplished as follows: • Unscrew the two screws that hold the battery access cover in place. It is located on the upper portion of the dividing network, on the rear of the speaker enclosure (Figure 1).
Ideally the systems should be placed at least three feet from any walls. The height, at the bottom of the Lens assembly , should be at ear level. The two speakers should be equidistant from your primary listening position; the distance should be determined by the distance between the speakers.
The 4344MkII loudspeakers can be connected by one of several meth- ods. The binding posts on the rear panel of the 4344MkII will accept most types of audio cable and connectors, including banana plugs and bare wire (Figure 3). Follow the hookup method that best describes your system.
The 4344MkII’ s outer connection panel and internal dividing network are designed so that separate sets of speaker cable can be attached to the low-frequency transducer and midrange/high-frequency transducer portions of the dividing network. This is called bi-wiring.
Figures 5 through 8 show two bi-wiring options, single-stereo amplifier and dual-stereo amplifier modes. For passive and bi-wire connections, set the switch to the Normal/Bi-W ire position (Figure 5a).
The optimal method of powering the 4344MkII system is with two amplifiers, one for low frequencies and one for the mid/high frequencies . It is necessary to use a high-quality active crossover module.
The 4344MkII loudspeaker systems have an oiled finish. Cleaning should be done with an untreated dust cloth. Do not use conventional furniture waxes and polishes, which are not designed for oiled finishes.
No. 14 Frequency Response: 30Hz – 22kHz – 6dB Sensitivity: 95dB for 2.83V @ 1 meter Recommended Maximum 200 watts continuous Power Handling: 800 watts peak Nominal Impedance: 6 ohms Crossover Freq.
An important point after buying a device JBL 4344MKII (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought JBL 4344MKII yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data JBL 4344MKII - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, JBL 4344MKII you will learn all the available features of the product, as well as information on its operation. The information that you get JBL 4344MKII will certainly help you make a decision on the purchase.
If you already are a holder of JBL 4344MKII, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime JBL 4344MKII.
However, one of the most important roles played by the user manual is to help in solving problems with JBL 4344MKII. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device JBL 4344MKII along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
