Instruction/ maintenance manual of the product gto755.6 II JBL
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car audio pow er amplif ier owner’ s manual THANK Y OU for purchasing a JBL Grand T ouring ® Series II amplifier . In order that we may better serve you should you require warranty service for your new amplifier , please retain your original purchase receipt and return the enclosed warranty registration card.
INST ALLA TION 2 W ARNING: Playing loud music in an automobile can hinder your ability to hear traffic and permanently damage your hearing. We recommend listening at low or moderate levels while driving your car . JBL accepts no liability for hearing loss, bodily injury or property damage resulting from the use or misuse of this product.
APPLICA TIONS – GTO301. 1 II , GTO601. 1 II AND GT O1201. 1 II The GTO subwoofer amplifiers are single-channel amplifiers. There are two sets of terminals to make it easy to connect multiple woofers. Either set of (+/–) terminals may be used when connecting woofers.
4 APPLICA TIONS – GTO75.4 II The GTO75.4 II can be set up for stereo 4-channel, 3-channel or bridged 2-channel operation, as shown in Figures 6 through 8 . NOTE: For simplicity , Figures 6 through 8 do not show power , remote and input connections. NOTE: Minimum speaker impedance for stereo operation is 2 ohms.
Subwoofer Right Left – + + – + – GTO755.6 II (partial end panel) 5 APPLICA TIONS – GTO755.6 II The GTO755.6 II can be configured for 6-channel, 5-channel or 3-channel operation, as shown in Figures 9 through 11 . Input Mode Switch: • Use INT (internal mode) to send a signal from the front and rear inputs to the subwoofer .
6 INST ALLA TION AND SETUP SETTING THE CROSSOVER(S) Determine your system plans and set the crossover mode switch accordingly . If you plan to use the GTO75.2 II or GTO75.4 II to drive full-range speakers, set the crossover mode to FLA T and skip to “Setting Input Sensitivity .
7 INST ALLA TION AND SETUP To Neon P ower Supply To Neon Power Supply Figure 13. Installing neon tubes in a JBL GTO amplifier . TROUBLESHOO TING SYMPT OM LIKEL Y CAUSE SOLUTION No audio No.
GTO301.1 II • 204W RMS x 1 channel at 4 ohms and ≤ 1% THD + N • Signal-to-noise ratio: 77dBA (reference 1W into 4 ohms) • 294W RMS x 1 channel at 2 ohms, 14.4V supply and ≤ 1% THD + N • Dynamic power: 320W at 2 ohms • Effective damping factor: 6.
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