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JBL GTO-5EZ 5-channel car amplifier — 50 watts RMS x 4 at 4 ohms + 500 watts RMS x 1 at 2 ohms

Item # 109GTO5E

Efficient power for your music always set correctly JBL's compact GTO-5EZ 5-channel amp will drive each of your...

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Efficient power for your music always set correctly JBL's compact GTO-5EZ 5-channel amp will drive each of your...

Item # 109GTO5E

Shop all JBL Car Amplifiers

About the JBL GTO-5EZ

Buck Pomerantz
Efficient power for your music always set correctly
JBL's compact GTO-5EZ 5-channel amp will drive each of your front and rear speakers with 50 watts RMS, while driving your subwoofers with up to 500 watts RMS, bringing exciting, visceral impact to the music in your car. Or, bridged in 3-channel mode, it can run a couple of high-performance speakers with up to 150 watts each, to go along with that 500 watts RMS for the sub. This amp looks very cool with its "old-school" styling, and JBL includes a few innovations that really separate this amp from the others.

Efficient power for your music always set correctly
JBL's compact GTO-5EZ 5-channel amp will drive each of your front and rear speakers with 50 watts RMS, while driving your subwoofers with up to 500 watts RMS, bringing exciting, visceral impact to the music in your car. Or, bridged in 3-channel mode, it can run a couple of high-performance speakers with up to 150 watts each, to go along with that 500 watts RMS for the sub. This amp looks very cool with its "old-school" styling, and JBL includes a few innovations that really separate this amp from the others.

Simple Setup System for setting amp gain
One of the biggest problems with installing an amplifier is setting the gain properly. JBL has come up with a fool-proof method for getting it right, ensuring full-power performance and distortion-free play. Using test tones on the included setup CD, you adjust the gain knob until the yellow light or the red light goes off, and the green "Gain OK" light comes on — it's that simple. You'll never have to worry again about your amp "clipping" the signal, and possibly damaging your speakers or subs.

Plays well with factory radios
This GTO amp comes with screw-on bare wire-to-RCA adapters that let you hook up the amp, using your car's factory speaker wiring to supply the input signal. In some vehicles, the factory radio shuts down when you try to tap into the speaker wires, displaying a "no speakers are present" message. This amp features a special circuit that fools those factory radios by simulating a speaker load. The onboard crossovers and bass boost let you fine tune the system to perfection, and the large recessed knobs mean you don't need a tiny screwdriver to make your adjustments.

GTO-5EZ input panel

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Product highlights:

  • 5-channel car amplifier
  • 50 watts RMS x 4 at 4 ohms + 350 watts RMS x 1 at 4 ohms
  • 75 watts RMS x 4 at 2 ohms + 500 watts RMS x 1 at 2 ohms
  • 150 watts RMS x 2 bridged at 4 ohms + 500 watts RMS x 1 at 2 ohms
  • CEA-2006 compliant
  • variable high-pass filter on front and rear channels (40-220 Hz, 12 dB/oct on front; 40-200 Hz, 12 dB/oct on rear)
  • variable low-pass filter on subwoofer channel (40-280 Hz, 12 dB/octave)
  • variable bass boost on sub channel (0-18 dB at 40 Hz)
  • Simple Setup System with test tone CD for perfect gain setting
  • optional wired remote bass level controller available soon
  • preamp and speaker-level inputs (speaker wire-to-RCA adapters included)
  • switchable automatic signal-sensing turns on amp without need for remote lead
  • fuse rating: 30A x 3
  • 6-or 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 14-11/16"W x 2-5/8"H x 9-11/16"D
  • warranty: 1 year
  • MFR # GTO-5EZ

What's in the box:

  • 5-Channel amplifier (four full range channels/one subwoofer channel)
  • Three 30-amp ATO fuses (installed)
  • 5 Speaker wire to RCA adapters
  • Setup CD
  • Warranty information
  • Owner's manual (English/ German/ French/ Spanish/ Dutch/ Italian/ Swedish/ Danish/ Finnish/ Korean/ Japanese/ Chinese/ Russian/ Polish/ Portuguese/ Turkish/ Indonesian)

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More details on the JBL GTO-5EZ

Mark G.

Product Research

Features
Controls
Connections

Features

Multi-Channel Design: The JBL GTO-5EZ is a 5-channel amplifier, basically a 4-channel Class AB amplifier and a Class D mono subwoofer amplifier built into one chassis. Either half of the 4-channel section can be bridged, so the amp can be used as a 5-channel, 4-channel, or 3-channel amplifier.

CEA 2006 Compliant: The power ratings are measured according to the Consumer Electronics Association CEA-2006 standards. These standards allow you to accurately compare the rated power output of all CEA 2006-compliant amplifiers, even different brands. Manufacturers who adhere to the standards can display the CEA 2006 logo on their products and packaging. The power output is measured from 20 Hz to 20 kHz for the front and rear channels and 20 Hz to 280 Hz for the subwoofer channel, using a 14.4 volt power supply, and with no more than 1% THD+N:

  • Front and Rear Channels:
    • 50 watts x 4-channels into 4-ohms
    • 75 watts x 4-channels into 2-ohms
    • 150 watts x 2-channel into 4-ohms (Bridged)
  • Subwoofer Channel:
    • 350 watts x 1-channel into 4-ohms
    • 500 watts x 1-channel into 2-ohms

Setup Disc: The included setup CD is used to optimize the input gain. A test tone is output from the disc and the Gain LEDs on the amp (green, yellow, red) guide you through adjusting the gain controls.

Note: The instructions in the first version of the manual indicate the radio should be at full volume when playing the setup disc; this is wrong and JBL is in the process of correcting the manual. The volume should actually be as high as possible without distorting the signal; this will be different for every radio, but approximately 3/4 volume is typical.

Auto Turn-on: The GTO-5EZ has a signal sensing automatic turn-on circuit; it will turn on whenever an audio signal is present at any of the RCA inputs. The amplifier will automatically turn off approximately five minutes after the input signal ceases. If you prefer to use the radio's remote lead, the auto turn-on feature can be turned off.

Crossovers: There are three independent, built-in crossovers. The subwoofer channel has a low-pass crossover that cannot be bypassed. The crossover point is continuously variable from 40 Hz to 280 Hz and the crossover's slope is 12 dB/octave. The front and rear channels' crossovers can be set to high-pass, low-pass, or they can be bypassed (run full range). The crossover points are continuously variable from 40 Hz to 220 Hz and adjusted independently. The crossover's slope is 12 dB/octave.

Audio Input: If your radio has no line-level outputs, use the included adapters to convert the speaker wires to RCA and plug them into the amplifier's inputs. There are two input level switches (one for the front and rear channels and one for the subwoofer channel), each with a Hi2 position, used to present a speaker load to factory radios equipped with a circuit that turns the radio off when an amp is connected.

Front/Rear Routing Switch: The signal for the front and rear amplifier channels can be supplied from the separate front and rear inputs (two pair of stereo RCAs), or from just the front channel inputs (stereo RCAs). Set the switch to F&R (front and rear) or F (front).

Sub Routing Switch: The signal for the subwoofer amplifier channel can be supplied from the dedicated subwoofer input (single RCA), or from the front and rear channel inputs (stereo RCAs). Set the switch to F&R (front and rear) or S (sub).

Controls

Top:

  • Subwoofer channel:
    • Crossover Frequency: rotary knob; continuously variable from 40 Hz to 280 Hz
    • Input Gain: rotary knob (the gain LEDs are above the knob)
    • Bass Boost: rotary knob; continuously variable from 0 to +12 dB; boost centered at 45 Hz
  • Front channels:
    • Crossover selector: three position switch; high-pass, full range, low-pass
    • Crossover Frequency: rotary knob; continuously variable from 40 Hz to 220 Hz
    • Input Gain: rotary knob (the gain LEDs are above the knob)
  • Rear channels:
    • Crossover selector: three position switch; high-pass, full range, low-pass
    • Crossover Frequency: rotary knob; continuously variable from 40 Hz to 220 Hz
    • Input Gain: rotary knob (the gain LEDs are above the knob)

Right Side:

  • Front/Rear Input Level: three position switch; Low, Hi1, or Hi2 (used only with factory radios having a circuit that turns the radio off when it sees no speaker load)
  • Sub Input Level: three position switch; Low, Hi1, or Hi2 (used only with factory radios having a circuit that turns the radio off when it sees no speaker load)
  • Sub Routing Switch: F&R (front and rear)/S (sub)
  • Front/Rear Routing Switch: F (front)/F&R (front and rear)
  • Gain LEDs: on/off

Bottom:

  • Auto Turn-on: on/off
Connections

Left Side:

  • Power and Ground Terminals: set screw terminals; accept up to 4 gauge bare wire
    • Note: JBL recommends the power and ground cables be 6 gauge minimum. The recommended accessory list for the GTO-5EZ includes wiring kits with 4 gauge wire.
  • Remote Turn-on Terminal: set screw terminal; accepts up to 8 gauge bare wire
  • Speaker terminal: five pair of set screw terminals (for front left, front right, rear left, rear right, and sub); accept up to 8 gauge bare wire
  • Fuses: three ports for 30-amp ATO fuses (fuses are factory installed)

Right Side:

  • Audio Input: five female RCA jacks (front left, front right, rear left, rear right, and sub); compatible with speaker level signals using the included adapters
  • Remote: RJ-25 jack (the wired remote is not yet available as of 2/21/12)

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