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There are currently no product reviews.
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excellent value & price! Includes everything you need to know about the NN-C777! I would buy this again.
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Very satisfied! I was searching for several days, but nope; till I discovered your webside and there it was at a very reasonable price. Keep up the good work!
Paul
Flanders
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Generally speaking good copy; a few pages too hard contrast...
Good service and communication.
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I purchased the unit from a private party and the original owners manual was not available. Having the ability to download it was extremely helpful and clarified operating the equipment immensely. This is a complicated unit and without the manual I would not have been able to maximize it's potential. Thank you.
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Being a user of older radios of many kinds, preferring them over more modern rigs, this manual was invaluable in the programming of my two. I now know for certain what the assorted buttons functions are, and am very grateful to have found this excellent site. Many thanks for your assistance, Tony.
� At the same power levels Infinite Baffle designs (no enclosure, sometimes called �Free-Air�) allow greater cone motion and the power rating of the subwoofer must be reduced to reflect this (see the specifications). At the same power levels Infinite Baffle subwoofer installations will have much longer cone excursion than subwoofers mounted in an enclosure. � Sealed enclosures exert some control over excursion as a result of the air inside the enclosure acting as a spring against the woofer cone motion. Large enclosures typically allow higher excursion than smaller boxes. � Vented and Band-pass enclosures have the lowest excursion as a result of the port tuning effects. However, vented enclosures will allow for high excursion outside the port tuning range. Singletuned Band-pass enclosures provide the lowest overall cone excursion. See the specifications sheet for details on the GTi subwoofer power handling capabilities in different enclosure configurations.
Speaker Connection and Combination
GTi subwoofers are 4 ohms nominal impedance. If you are connecting two speakers in parallel to an amplifier channel, make sure your amplifier will drive a two ohm load. Parallel Wiring
(+)
Four woofers can also be wired (as shown below) in parallel/series or series/parallel so that the amplifier will see four ohms nominal impedance. Parallel/Series Wiring
(+)
Series/Parallel Wiring
(+)
+ �
+ �
+ �
+ �
2 ohms Nominal Impedance
+ �
+ �
(�)
4 ohms Nominal Impedance
4 ohms Nominal Impedance
Series Wiring
(+)
+ �
+ �
+ �
+ �
If your amplifier will not drive a two ohm load, we recommend that you connect the two speakers in series to create an 8 ohm load as shown here.
8 ohms Nominal Impedance
+ �
(�)
(�)
Please consult your JBL dealer for information on more complex speaker combinations.
+ �
(�)
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