Set the Gain

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 control to a frequency somewhat lower than the lowest setting you used on any of the high-pass channels. After listening to music on the system for a time, fine-tune the low-pass Crossover control setting to achieve a smooth transition from the subwoofer to the rest of the system’s speakers while avoiding a “hole,” where the sounds that occur between the subwoofer and other speakers seem to drop out. The illustration below shows the acceptable low-pass Crossover control frequency range.

GTO-5EZ

Gain LEDs Switch


		GTO-3EZ Gain		LEDs
	Front/Rear	GTO-3EZ Gain		LEDs	Input Level
	Input Level		Switch		Switch
	Input Level		Switch		Switch
	Switch
Sub
Input Level
Switch

Before beginning, make sure the Gain LEDs switch is set to the “On” position.

1. Initially set all amplifier Input Level switches to the “Hi1” position.

NOTE: If you have connected the GTO-5EZ or GTO-3EZ amplifier to your factory audio system’s speaker outputs, the audio system may show a “speaker disconnected” message, or may fail to play with an amplifier connected to its output. If this happens, set the GTO amplifier’s Input Level switch to the “Hi2” position. The “Hi2” position includes a circuit designed to fool this type of factory system into “seeing” a speaker connected to its output.

2.Turn all amplifier Gain controls to the “Min” setting.

3.If you have connected an RBC Remote Bass Control (sold separately), set its knob to 3/4 (clockwise) before performing the rest of the procedure. This will allow you to use the control to boost or attenuate the subwoofer after you have completed setup.

4.Play the supplied setup CD through the vehicle’s audio system.

5.Set the audio system head unit’s volume to maximum (all the way up).

6.SLOWLY advance the Gain control setting. The Gain Indicator LEDs will light up:

•Yellow LED = Gain is too low

•Green LED = Gain is OK

•Red LED = Gain is too high

7.SLOWLY advance the Gain control so that the green Gain Indicator LED lights up. If you overshoot and the red LED lights up, turn the Gain control down so that the yellow LED lights up and advance the Gain control SLOWLY until the green LED lights up.

Gain too low	Gain too high	Gain OK
(increase gain)	(decrease gain)

NOTE: If you advance the Gain control all the way and the yellow LED is still lit up, turn the Gain control to “Min,” switch the Input Level switch to the “Low” position and repeat Step 6.

8.Repeat Steps 5 and 6 for all of the amplifier channels. When all Gain Indicator LEDs are lit green, the GTO amplifier gain setup is complete.

NOTE: Set the amplifier’s Gain LEDs switch to the “Off” position to prevent the red LEDs from lighting up continually during normal operation.

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GTO-5EZ, GTO-3EZ specifications

The Harman GTO-3EZ and GTO-5EZ are compelling offerings from Harman's extensive range of car audio products. Both models showcase superior engineering and innovative technologies that make them standout choices for audiophiles and casual listeners alike.

Starting with the GTO-3EZ, this three-way speaker system emphasizes a balanced sound profile. It features a 3-inch polycarbonate woofer that ensures bass performance is both deep and smooth. The addition of a 1-inch textile dome tweeter enhances clarity in the high frequencies, providing a more immersive listening experience. Notably, the GTO-3EZ is designed with an integrated crossover network, enabling an accurate distribution of frequencies across the speaker components. This ensures that each driver operates efficiently within its designated frequency range, resulting in a cohesive sound stage.

The GTO-5EZ takes the performance a step further with its five-way speaker configuration. Featuring a larger 5.25-inch woofer, the GTO-5EZ excels in delivering richer bass and enhancing volume levels without distortion. Accompanied by a 1-inch soft dome tweeter, this speaker captures the intricacies of vocals and instruments, giving listeners a truly engaging experience. This model also incorporates an advanced silk dome midrange driver, providing superior mid-frequency clarity that complements both vocal and instrumental tracks.

Both models utilize Harman’s proprietary EQ settings which allow users to tailor their listening experience. This feature offers a selection of preset equalizer options, helping users achieve optimal sound depending on their personal preferences or specific musical genres. In addition, the speakers employ a robust build quality with durable materials that ensure longevity and resilience against harsh automotive environments.

The GTO-3EZ and GTO-5EZ are also designed for easy installation, featuring adaptable mounting hardware that caters to a variety of vehicle models. With a sleek aesthetic, they blend seamlessly into car interiors, enhancing the overall look without compromising on performance.

Overall, the Harman GTO-3EZ and GTO-5EZ are exemplary choices for those seeking top-notch car audio solutions. With their state-of-the-art technologies, thoughtful design, and exceptional sound quality, these speakers promise to elevate any driving experience, making each journey a melodious adventure.