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The rules should oblige the seller to give the purchaser an operating instrucion of JBL W12GTi, 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.
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Unfortunately, only a few customers devote their time to read an instruction of JBL W12GTi. 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 W12GTi should contain:
- informations concerning technical data of JBL W12GTi
- name of the manufacturer and a year of construction of the JBL W12GTi item
- rules of operation, control and maintenance of the JBL W12GTi 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 W12GTi 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 W12GTi, 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 W12GTi.
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 W12GTi 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
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Page 1
PRO POWE R TM Automotive Subwoofer Owner’s Manual W 1 0GT i W 1 2GT i W 1 5GT i[...]
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Page 2
Thank you for c hoosing a J B L G Ti Series subwoofer . G Ti Series subwoof ers are designed to provide maximum sound output in a variety of enclosure types while maintaining the superb sound quality associated with J B L. T o ensure the best subwoofer performance, we strongly recommend that installation be entrusted to a qualified professional. Al[...]
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Page 3
Choosing an Enclosure G Ti Series subwoofers are optimized to perform best in small sealed, vented and bandpass enclosures. W hile infinite-baffle mounting of G Ti Series subs is possible, power handling will be compromised since there will be no enclosed volume of air to help the speaker ’ s suspension control the motion of the woofer ’ s cone[...]
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Enclosure Construction Please observe the following suggestions when building an enclosure for G Ti Series subwoofers. 1. Choose an enclosure design from the Enclosure Design Sheet included with your subwoofer . 2. Use at least 3/ 4" (19mm) M D F (medium density fiberboard) or marine birch plywood to build the enclosure. Enclosures for 12"[...]
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the other coil ’ s magnetic gap. This will cause magnetic braking, which will slow the cone ’ s motion and prevent damage due to overexcursion. F or a G Ti Series woofer , X max is determined by the amount of voice-coil overhang between the first and second top plates. See Figure 3. Thermal power handling is far superior to a conventional DV C [...]
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Configuring multiple woofers for connection to a single amplifier: Figure 7 . Connect two woofers in parallel (with coils in parallel) for a 1.5-ohm load Figure 8. Connect thr ee woofers in parallel (with coils in series) for a 4-ohm load Figure 9. Connect four woofers in parallel (with coils in series) for a 3-ohm load TERMINAL JUMPERS INT ACT + T[...]
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Specifications W10GTi W12GT i W15GTi 10" Automotive subwoofer 12" Automotive subwoofer 15" Automotive subwoofer Power handling (peak) 3000W 4000W 5000W Power handling (avg.) 600W 7 00W 800W Fr equency response (in-car) 20Hz – 1kHz, ±3dB 18Hz – 1kHz, ±3dB 16Hz – 1kHz, ±3dB Impedance 3 or 12 ohms 3 or 12 ohms 3 or 12 ohms Sens[...]
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JB L Consumer Products • 250 Cro ssways Park Drive, W o odbur y, NY 11 7 9 7 1-800-33 6-4J BL (4 525) www.jbl.com ©2000 JB L, Incorporated • J BL is a registered trademark of J B L, Incorporated Made in USA Printed in USA 9/00 Part No. W1 0,12,1 5GTI OM Declaration of Conf ormity We, Harman Consumer Inter national 2, route de T ours 72500 Chat[...]