JBL P-7520 manual

1
2
3
4
5
6
7
8

Go to page of

A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of JBL P-7520, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

What is an instruction?

The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of JBL P-7520 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.

Unfortunately, only a few customers devote their time to read an instruction of JBL P-7520. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.

What should a perfect user manual contain?

First and foremost, an user manual of JBL P-7520 should contain:
- informations concerning technical data of JBL P-7520
- name of the manufacturer and a year of construction of the JBL P-7520 item
- rules of operation, control and maintenance of the JBL P-7520 item
- safety signs and mark certificates which confirm compatibility with appropriate standards

Why don't we read the manuals?

Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of JBL P-7520 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of JBL P-7520, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the JBL service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of JBL P-7520.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the JBL P-7520 item, and its use of respective accessory, as well as information concerning all the functions and facilities.

After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.

Table of contents for the manual

  • Page 1

    Power Series Amplifiers P-7520, P-7540, P-2510 Owner ’ s Manual GENUINE JBL P-7520/7540/2510 OM copy 7/14/98 11:46 AM Page 1[...]

  • Page 2

    2 Amplifier Featur es • 4-, 3- or 2-c hannel operation (P -7540), 2- or 1 -channel operation (P -7520), mono Class-D subwoofer c hannel (P -251 0) • Simultaneous stereo and mono opera- tion (P -7520, P -7540) • Built-in 12dB/oct variable electronic crossover • Balanced differential input • Front and rear summing inputs (P -251 0) for non-[...]

  • Page 3

    3 • Always wear protective eyewear when using tools. • When routing cables, keep input signal cables away from power cables and speaker wires. • When making connections, make sure that eac h connection is clean, insulated and properly secured. Observe the polarity markings on the rear panel. Refer to the application drawings to set up the amp[...]

  • Page 4

    3. If you are running either the P -7520 or the P -7540 in tri-mode (stereo and mono simultaneously to one or two pairs of satellite speaker s and a sub- woofer), refer to the c hart above to determine the capacitor and inductor values you’ll need to route bass sig- nals to the woofer , and midrange and high frequencies to the satellite speak- er[...]

  • Page 5

    5 2. If you are connecting the amplifier to a factory-installed source unit, or to a source unit that only has speaker -level outputs, connect the speaker outputs of the source to the speaker inputs on the amp, observing the following color -code: Front Lef t+: White Front Lef t–: White with blac k stripe Front Right+: Gray Front Right–: Gray w[...]

  • Page 6

    6 7 +R– +R– –L+ –L+ AUX OUT R L R L FRONT FRONT REAR LINE LEVEL INPUT SPKR LEVEL IN REAR +R– +R– –L+ –L+ R L FRONT FRONT REAR LINE LEVEL INPUT UNIVERSAL INTERFACE REAR 3. After adjusting the level of the main speakers in your system, you should adjust the remaining c hannels (if you are using a P -7540 or a multi-amp sys- tem) for t[...]

  • Page 7

    7 Symptom Likely Cause Solution No audio Low/no remote on voltage Chec k connections; turn-test turn-on voltage Speakers are not connected Chec k wiring; use VOM/D VM to or are blown measure speaker -coil resistance Distorted audio Input sensitivity is not set properly See Set ting Input Sensitivity on page 5 Audio lac ks “punc h” Speakers are [...]

  • Page 8

    JBL Consumer P roducts 250 Cross ways P ark Drive Woodbury , NY 1 1 797 Part No. SH1 1 24 Made in USA Declaration of Conformity We, JBL Europe A/S Konge vejen 194B DK-3460 Birkerø d DENMARK declare in own responsibility , that the products described in this owner’ s manual are in compliance with technical standards: EN EN 55013/A12/8.1994 55020/[...]