OWNER'S MANUAL HIGH PERFORMANCE AMPLIFIERS
B2 has through years of dedication introduced our line of Ref 0.5 & Anno amplifiers. The B2 line up are made to fullfil our philosophy for amplifiers; A variety of applications, highest possible efficiency and great appearance. The B2 amplifiers are designed to produce high power levels even from stock electrical systems. High efficiency is created from updating every stage through the amplifiers' circuit.
. CONTROL & CONNECTION 3-1. Ref 0.5 CONTROL & CONNECTION INPUT Connect preamp signal cables from the headunit to RCA Input of Ref 0.5. OUTPUT Output RCA for signal routing to another amplifier. POWER & PROTECTION INDICATOR Power BLUE, Green-lit shows correct operation Protect LED, RED-lit shows general malfunction, faulty connection or thermal protection GAIN ( 6V ~ 0.2V ) Matching the output voltage of the headunit's RCA line-outs to Ref 0.5 input section.
REMOTE LEVEL CONTROL PORT Connection of external level control. POWER & PROTECTION INDICATOR Power BLUE, Green-lit shows correct operation Protect LED, RED-lit shows general malfunction, faulty connection or thermal protection 3-3. Ref 0.5 & Anno CONTROL & CONNECTION GND ( GROUND CONNECTION ) For connection to the chassis' ground. For optimum performance 0 gauge cable is recommended. +12V ( POWER CONNECTION ) For connection to the positive terminal of the battery (+12).
For safety purposes, install the amplifier in a dry and well ventilated location and make sure no cables or other harness of the car is interfaced with the mounting location or will present a hazard to the cars' cable, control cables, fuel lines/tanks, hydraulic lines or other components of the vechicle. 4-3.
4-4. SPEAKER CONNECTION B2 amplifier series recommends 12 AWG speaker connecting cables. Run 12 AWG speaker connecting cables from your speakers to amplifiers' mounting location Keep speaker cables away from power cables and B2 series amplifier's input cables. Use grommets anywhere the cables have to pass through the holes in the metal frame or sheet metal. Connect to the speakers according to terminals on each speaker.
Tweeter Anno SPEAKER CONNECTION DIAGRAM i Passive MidRange /Bass MidRange /Bass Tweeter Passive Tweeter Anno SPEAKER CONNECTION DIAGRAM ii Passive MidRange /Bass 8 ohm ~ 2ohms Anno SPEAKER CONNECTION DIAGRAM iii Tweeter Passive Passive MidRange /Bass Tweeter 8 ohm ~ 2ohms MidRange /Bass
4-5. Ref 0.5 DAISY CHAIN CONNECTION Daisy chain connection allows linking of 2 mono amplifiers to work as 1. Please read the following connection diagram cautiosly to ensure the correct connection. Step 1. Connect the master Ref 0.5 amplifier to the head-unit and set its output master and input slave switch to output master position. Step 2. Connect the master and slave Ref 0.5 amplifier in daisy chain Rca jack as shown in the diagram. Step 3. Set slave Ref 0.
Headunit FUSE 500A GROUND 12V Main Battery CAUTION Ref 0.5 Minimum daisy chain connection impedance is 2 ohm Do not use daisy chain connection in 1 ohm Ref 0.5 working Voltage is 9V ~ 16V.
5. TROUBLE SHOOTING TIPS NO SOUND ( NO OUTPUT ) @ Pls check all connections, cables' rounting, short, voltage at Ref 0.5 & Anno amplifiers and headunit @ Pls check fuses ,If it is blown, pls replace with new ones. @ Pls check whether speakers are functional. You can connect a AA battery to the speaker terminals to see if there is any movement of the speaker cone. PROTECTION @ Pls check overload, overheat ( thermal ), short and voltage. DC offset @ Minimum working impedance is 1 ohm for single Ref 0.
