Instruction/ maintenance manual of the product GT-475 Boston Acoustics
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4- Channel Amplier O wners Manual GT -475 GT -4100.
T able Of Contents 2 2 T able of Contents Parts list 3 Specifications Connections 4 T op panel removal / installation Controls 5 Status LEDs Installation - General 6 Before you install Battery and cha.
Par ts And Specifications 3 Included Hardware: GT -475 GT -4100 Installation Manual 1 1 Female Quick-Connect T erminal 1 1 (for remote turn-on input) 2mm Hex Wrench 1 1 3mm Hex Wrench 1 1 Mounting Scr.
GT -475 GT -4100 1 3 2 2 4 6 5 8 7 1 3 2 2 4 6 5 8 7 Connections 4 Connections u Front RCA Input v Remote T urn-On (female spade connector supplied) w Rear RCA Input x Remote Gain Port (refer to GT -R.
1 6 7 11 10 4 3 8 2 5 9 12 1 6 7 11 10 4 3 8 2 5 9 12 GT -475 GT -4100 Controls 5 Controls u Signal Routing Switch (Sends Front RCA Signal to Rear Channels) v Front Channel Input Sensitivity (250mv to 8.
Installation - General 6 Installation - General W ARNING! Before driving the amplifier mounting screws through any surface, be sure of what is behind that surface.
Installation - Wiring 7 Installation - Wiring Amplifier Fuses Although the amplifier has an internal fuse, additional fuse protection should be installed as close as possible to the battery on the positive (+) power wire going to the amplifier . An inline fuse should be installed at no more than 18" (46cm) on the positive (+) power wire.
T uning - Front and Rear Speakers 8 T uning The Amplifier - Front and Rear Speakers 1) Music The material chosen for system tuning 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.
fuse T uning - Front and Rear Speakers 9 T uning The Amplifier - Front and Rear Speakers 6) Input Sensitivity Control Starting with the front channels, slowly rotate the control clockwise ( re f e r t o t h e d i ag r a m o n p a g e 5 ) until maxi- mum undistorted playing level is heard from the speakers.
T uning - Subwoofers 10 T uning The Amplifier - Front Speakers and Subwoofer (s) 1) Front Signal Routing Switch If using two sets of RCAs (independent front and rear RCAs), set the switch to DEDICA TED FRONT AND REAR INPUTS . If you are using one set of RCAs for both front and rear channels, set the switch to SEND FRONT RCA SIGNAL TO REAR.
fuse T uning - Subwoofers 11 T uning The Amplifier - Front Speakers and Subwoofer (s) Highpass Crossover Control (Front Channel Only) Cont. Slowly rotate the input sensitivity control clockwise until maximum undistorted playing level is heard from the speakers.
Amplifier T roubleshooting Guide S tatus LEDs on Amplifier not Lit—Head Unit (Source) T urned “ON” V erify Remote turn-on wire from source to amplifier has proper voltage Power (B+) connections .
An important point after buying a device Boston Acoustics GT-475 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Boston Acoustics GT-475 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Boston Acoustics GT-475 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Boston Acoustics GT-475 you will learn all the available features of the product, as well as information on its operation. The information that you get Boston Acoustics GT-475 will certainly help you make a decision on the purchase.
If you already are a holder of Boston Acoustics GT-475, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Boston Acoustics GT-475.
However, one of the most important roles played by the user manual is to help in solving problems with Boston Acoustics GT-475. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Boston Acoustics GT-475 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
