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1) Music

The material chosen for head unit/amplifier system setup must be both clear in
recording quality and dynamic in amplitude. Many audiophile “test” discs have
musical tracks with both of these characteristics and should be used.

2) Input Sensitivity Control (Gain)

Turn control all the way counterclockwise (minimum position). In this position, the
amplifier will be less sensitive to the input signal from the head unit (refer to the
diagram on page 3).

3) Crossover Control

Crossovers should be turned “OFF” during this phase of setup . Move the X-OVER
switch to the “OFF” position (refer to the diagram on page 3), with these settings,
full-range signal is sent to the speaker outputs. If over-excursion is detected from
speakers, move the switch to “HP” and slowly rotate clockwise until over-excursion
is eliminated.

4) Head Unit

The head unit should have all controls such as bass, treble, balance, and fader set to
the flat or centered position. The volume control should be at the minimum setting.
If the head unit has any equalization or bass management features such as boost,
they should be defeated at this time. Turn head unit on, and verify that the BLUE 
status LED is illuminated on the amplifier.

5) Volume

With the chosen musical track playing, turn the head unit volume control up until the
maximum level of undistorted signal is heard from the speakers. (For most head
units, this will be near the end of the volume control range.)

Tuning The Amplifier - Front And Rear Speakers

Configuration and Connection Diagram: 

Front & Rear Speakers - 80Hz Highpass

Subwoofer - 80Hz Lowpass, 35Hz Highpass, and Q of 1.2

Содержание GTA 1105

Страница 1: ...High Performance 5 Channel Amplifier GTA...

Страница 2: ...x 4 N A 4 Ohm Mono 250 Watts x 2 250 Watts x 1 2 Ohm Mono N A 400 Watts x 1 Impedance Stability 2 St 4 Mono 2 Frequency Response 3dB 10Hz 50kHz 10Hz 150Hz Signal to Noise Ratio 90dB 90dB A Weighted T...

Страница 3: ...0Hz cont variable GTA RSL Port Remote Gain Speaker Output Block Front and Rear Speakers Speaker Output Block Subwoofer Status LED Blue Normal Red Fault Mode Fuses Replace with same value only refer to...

Страница 4: ...system Wire Routing Do not run the power wire near any low level signals or audio cables such as the RCAs from the head unit Noise can be introduced into the amplifier when this occurs It is helpful...

Страница 5: ...Tighten the 12v and GND terminals with the supplied 4mm hex wrench to secure the wire into the terminals If the power wire must be routed through a drilled or existing hole use a nylon panel grommet...

Страница 6: ...nt to the speaker outputs If over excursion is detected from speakers move the switch to HP and slowly rotate clockwise until over excursion is eliminated 4 Head Unit The head unit should have all con...

Страница 7: ...Rotate the crossover control fully clockwise refer to the diagram on page 3 The highpass crossover point is now set at 200Hz Q Tune should be set to off Slowly rotate the input sensitivity control clo...

Страница 8: ...ad units this will be at the end of the volume control range WARNING A distorted signal from the head unit sent to the amplifier can cause speaker failure at higher listening levels 3 Input Sensitivit...

Страница 9: ...s You may find while setting the Q Tune that over excursion may be detected in the subwoofer s lowering the Q Tune input sensitivity or raising the highpass crossover point will eliminate this Minor a...

Страница 10: ...longside power Amplifier Output Distorted Music not Recorded with Intentional Distortion Verify Source output to amplifier is not distorted Amplifier input sensitivity is correctly adjusted Amplifier...

Страница 11: ...Notes 11...

Страница 12: ...e is a trademark of Boston Acoustics Inc Specifications are subject to change without notice 2010 Boston Acoustics Inc All rights reserved Covered by patents issued and or pending 142 003890 0 Boston...

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