Instruction/ maintenance manual of the product MkII W12GTi JBL
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THANK YOU for choosing a JBL ® GTi Series subwoofer. GTi subwoofers are designed to provide maximum sound output in a va ri et y of enclosure types while maintaining the superb sound quality associated with JBL. To ensure the best subwoofer performance, we strongly recommend that installation be entrusted to a qualified professional.
2 INST ALLA TION W ARNINGS AND TIPS WARNING Playing loud music in an automobile can hinder your ability to hear traffic, as well as permanently damage your hearing. We recommend listening at low levels while driving. JBL accepts no liability for hearing loss, bodily injury or property damage resulting from use or misuse of this product.
GTi Series subwoofers are optimized to perform best in small sealed, vented and bandpass enclosures. While infinite- baffle mounting of GTi 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.
4 ENCLOSURE CONSTRUCTION Please observe the following suggestions when building an enclosure for GTi Series subwoofers. 1. Choose an enclosure design from the Enclosure Design Sheet included with your subwoofer. 2. Use at least 3/4" (19mm) MDF (medium density fiberboard) or marine birch plywood to build the enclosure.
At extremely high power, each coil will enter the other coil’s magnetic gap. This will cause magnetic braking, which will slow the cone’s motion and prevent damage due to overexcursion. For a GTi Series woofer, X max is determined by the amount of voice-coil overhang between the first and second top plates.
6 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.
W10GTi MkII W12GTi MkII W15GTi MkII 10" Automotive subwoofer 12" Automotive subwoofer 15" Automotive subwoofer Power handling (peak) 3000W 4000W 5000W Power handling (RMS) 600W 700W 800.
Declaration of Conformity We, Harman Consumer Group International 2, route de Tours 72500 Château du Loir France declare in own responsibility that the products described in this owner’s manual are.
An important point after buying a device JBL MkII W12GTi (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 MkII W12GTi 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 MkII W12GTi - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, JBL MkII W12GTi you will learn all the available features of the product, as well as information on its operation. The information that you get JBL MkII W12GTi will certainly help you make a decision on the purchase.
If you already are a holder of JBL MkII W12GTi, 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 MkII W12GTi.
However, one of the most important roles played by the user manual is to help in solving problems with JBL MkII W12GTi. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device JBL MkII W12GTi 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
