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Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of JBL GTO-504EZ 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 GTO-504EZ, 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 GTO-504EZ.
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Table of contents for the manual
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Page 1
Ow n e r ’ s Manu al GTO - 8 0 4 e Z / GTO - 5 0 4 e Z pow e r amplifier English[...]
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2 why yOu shOuld P a y a TTenTiOn TO This Owner’s Manual The performance of your vehicle’ s audio system depends as much on quality installation and setup as it does on quality gear . Of course, these new JBL ® GTO amplifiers are bulletpr oof performers that are built using the highest quality components, and will outperform any competing prod[...]
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3 ww w .jbl. com English MOUNTING THE AMPLIFIER NOTE: Y ou may find it more convenient to make all of the connections to the amplifier before you permanently mount it to the vehicle. Before mounting the amplifier you must r emove the two end caps to expose the mounting holes and the connections. Using a Phillips screwdriver , remove the attachment [...]
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4 CONNECTING THE POWER AND GROUND The GTO series amplifiers are capable of delivering extr emely high power levels, and requir e a heavy-duty and reliable connection to the vehicle’ s electrical system to achieve optimal performance. Please adhere to the following instructions carefully . Using the Connectors GTO series amplifiers use the same ty[...]
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5 ww w .jbl. com English Power Connection 1. Connect a wire (minimum 8AWG – 8.4mm 2 – for the GTO-804EZ; minimum 10AWG – 5.3mm 2 – for the GTO-504EZ) directly to the battery’ s positive (+) terminal. 2. Install a fuse holder for a 50A fuse (GTO-804EZ) or 40A fuse (GTO-504EZ) on this wire within 18" (46cm) of the battery’ s (+) term[...]
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6 Bridged operation (three-channel system with high-power for a subwoofer) • Connect the left and right speakers to the FL and FR (+) and (–) terminals • Connect the subwoofer to the RL (+) and RR (–) terminals. (The rear -channel Bass Boost control makes the rear channels preferable for subwoofer connection. See Bass Boost, on page 1[...]
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7 ww w .jbl. com English CONNECTING THE INPUTS Use RCA audio cables to connect source units with pr eamp-level outputs to the amplifier; use the supplied bare wir e- to-RCA adapters to connect to source units that don’ t have RCA output connectors. Use a small Phillips screwdriver to loosen the adapter’ s set screws and insert the speaker wir e[...]
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8 seTuP PrOcedure GTO series amplifiers include a setup CD with test signals that makes it easy to precisely set the amplifier’ s input gain to maximize the amplifier’ s signal-to-noise and dynamic range performance with your vehicle’ s audio system. The amplifiers feature thr ee Gain Indicator LEDs that provide all the feedback you need [...]
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9 ww w .jbl. com English • Low-pass operation: The low-pass Crossover control setting you use for subwoofers will depend partly on the settings you use for the system’ s high-pass channels (see above) and partly on the type and location of your system’ s subwoofer . Start by setting the Crossover contr ol to a frequency somewhat lower than[...]
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10 BASS BOOST When you’re using the amplifier’ s rear channels to power a subwoofer , the Bass Boost control can pr ovide up to 12dB of bass boost at 45Hz. Set this control accor ding to your personal taste, but be careful not to set the contr ol at a high enough level to cause audible distortion or bottoming of your subwoofer . CAUTION: Only u[...]
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11 ww w .jbl. com English TrOubleshOOTinG If your amplifier isn’t performing the way you think it should, check to see if the pr oblem is covered in this section before calling your dealer or contacting JBL customer service. PROBLEM causes and sOluTiOns No sound (the amplifier’ s Power/ Protection LED is of f): • Checkthattheam[...]
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12 sPecifica TiOns GTO-804EZ Number of Channels: 4 Power Output (CEA 2006A): 80W RMS x 4 channels at 4 ohms, 14.4V DC, <1.0% THD 100W RMS x 4 channels at 2 ohms, 14.4V DC, <1.0 % THD 200W RMS x 2 channels bridged at 4 ohms, 14.4V DC, <1.0% THD Max Power: 940W: 235W x 4 channels at 2 ohms (1kHz), 15.5V DC, 10% THD Frequency Response: 20Hz ?[...]