BMA475 BMA476BT WATERPROOF DIGITAL 4-CHANNEL AMPLIFIERS INSTALLATION I OWNER·s IP66 Rated ANUAL 0 Bluetooth® (BMA476BTI NavA tlas ™
INSTALLATION Preparation Amplifier Features • • • • • • • Meets or exceeds ASTM d4329 (UV exposure) Built-in professional Bluetooth® signal processor module(BMA476Bn Intelligent switching between Bluetooth® and RCA signal(BMA476Bn Automatic Bluetooth® on and off(BMA4768T) SMD dedicated audio chip device Full MOSFET DC- DC PWM power supply Overload. short circuit. overheat. under voltage protection Please read entire manual before installation. Due to the technical nature of amplifiers.
INSTALLATION Connection Descriptions NOTE: Be sure to follow specific instructions included with your amplifier installation kit (not included with this amplifier). The information below should be used as a general guideline only. Power Wire (+ 12V) • Disconnect negative battery terminal before proceeding. Consult a qualified technician for instructions if you are unsure. • Plan wire routing before cutting any wires to Length.
INSTALLATION Audio Inputs BMA475 BMA476BT -~-- 4 G) Audio Input Q) Bluetooth Antenna --- ~-------------------------------------
INSTALLATION Amplifier Controls BMA475 BMA476BT (D Bluetooth Pairing LED (ONLY BMA4768T) Protection Mode LED (D Power G) Gain (J) High Pass Filter 5
INSTALLATION Power and Speaker Connections ~............................,;;,.:,.,.
INSTALLATION Typical Wire Routing 18" (1.5 FEET) 1-CMAXIMUM l I FUSE 12V BATIERY 12VDC (Power) RCA CABLES - Bluetooth antenna (BMA476Bn Front R Grey+. - Front L White +. - SPEAKERS 1::: = 2-8 ohms Rear R Violet+. - REM (Remote Tum On) Main Power Connections Connect+ 12V. GND and REM wires accordingly. A suitable fuse MUST be installed on the+ 12V lead within 18" of the battery for protection of the vehicle's electrical system. Fuse Rating Power/Ground Wire Size When replacing fuses.
INSTALLATION Amplifier Connections Speaker Connections Connect speaker wires observing polarity. The minimum impedance is 2 ohms. (4ohms only for bridge mode.) 4 Speakers (stereo) @ • Speakers (bridged) KER "OITT) -..GUII1 - ,...,.• . _ , (SPE""AKEifOTI1') • • . • e / \./ ll ····t' liH\ •• il!l Grey+ .
INSTALLATION Configuration/Setup Input level Control Hi-Pass Frequency Control LED Indicators (at the top panel of amplifier) The input level control (gain) is used to obtain the best possible match between the head unit audio output and the amplifier input. Begin by turning the input level control fully counterclockwise. Next. turn up the head unit volume control around 3/4 of the way up. Adjust the input level control clockwise until audible distortion is heard.
INSTALLATION - -~--~--~~--~~ Bluetooth Operation (BMA476BTI Pairing a Device Preparation l Before you can use a Bluetooth device. it must be paired i and connected. Make sure that Bluetooth is activated on 1 your device before you begin the pairing process. Pairing a New Device The BMA476BT broadcasts the pairing signal constantly when no devices are currently connected. Complete the pairing sequence from your Bluetooth device.
INSTALLATION Specifications BMA475 Power Output: • 75 Watts x 4 channels @ 4 Ohms • 98 Watts x 4 channels @ 2 Ohms •140 Watts x 2 channels @ 4 Ohms • 300 Watts total RMS Power Peak Music Power Output: 1200 Watts Signal to noise ratio: > 80dB (THD < 0.5°/o @ 40, 14.4V) Frequency response: 10Hz- 25kHz (4 Ohms) Amplifier dimensions: 1 0" W x 3" H x 1.
INSTALLATION Troubleshooting + 12V wire not connected or incorrect Check connections for proper voltage 1\lnllt:::lne.
INSTALLATION FCC Compliance This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference. and (2) this device must accept any interference received. including interference that may cause undesired operation. Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
INSTALLATION One-Year Limited Warranty This warranty gives you specific legal rights. You may also have other rights which vary from state to state. Namsung America Corp. warrants this product to the original purchaser to be free from defects in material and workmanship for a period of one year from the date of the original purchase. Namsung America Corp. agrees. at our option. during the warranty period. to repair any defect in material or workmanship or to furnish an equal new.
NavRtlas ™ Customer Service Toll Free: 1-844-628-2852 The Bluetooth® word mark and logos are owned by the Bluetooth SIG. Inc. and any use of such marks by Namsung is under license. Details and specifications mentioned in this document may be updated and subject to change without notice. ©2016 Namsung America Corp. All rights reserved.
