Summary of Contents for Classic DB4.5
- Page 1 DB4.5 4/3/2 Channel Class D Bridgeable Mini Stereo 12v Power Amplifier 920w Verified RMS Power Output Instruction manual...
- Page 2 Thank you for choosing Bassface. From the simplest connector to our top of the range amplifier - every element of these products has been designed to give you the best possible performance for your money. Please take the time to read these instructions carefully as they contain useful and important information.
- Page 4 To begin, disconnect the car battery, taking note of any required precautions suggested by the vehicle manufacturer such as alarm or radio codes, or on board computer or AGM battery requirements. For vehicles with front mounted batteries find a suitable point on the firewall/bulkhead to run the power wire through.
- Page 5 car/alternator combination that meets necessary requirements. It is also very important that a power amplifier is not used without an appropriate speaker load on each channel. The design of each amplifier is different, and so some amplifiers will tolerate running with open circuit channels, wheras some absolutely will not. It is easy to quickly damage an amplifier if channels are left open.
- Page 6 Bridging...
- Page 7 To bridge the DB4.5 please use the following speaker terminals: FR+ with FL- RR+ with RL- Once your power cable, RCA and remote lead are all securely running through the car to where you want the amp and the earth wire is fastened securely, somewhere close to the amp, you can fit the amplifier.
- Page 8 undriven channels over time. If you want to run only 2 speakers from a 4 channel amplifier always bridge the outputs so that there is load on all four. Time to lay on some power. Connect the earth first, then 12V power, then remote. Then connect in the RCA cables and you can move onto setting up sound controls on the amplifier.
- Page 9 Crossover settings If you have an active crossover elsewhere in your system (such as the head unit) then you may wish to set the crossover switch on the amp to OFF/FULL RANGE. Otherwise, in most cases, this must be set to ON and the controls adjusted appropriately. For subwoofer installation and setup we recommend a LPF of about 100hz initially as an excellent starting point for most car woofers.
- Page 10 Gain / Level adjustment Now it is time to disconnect all other subwoofers or speakers so that you can hear only the speakers powered by this part of this amplifier. Next, turn the level on the amp all the way down.