Frequently Asked ?’s

How do I tune my amplifier?

-We recommend having the gain tuned with a multimeter to ensure the correct power output and DD1 or Scope to ensure that the amplifier is not outputting any distortion or clipping to the subwoofer(s). We recommend between 80-125hz LPF for most of our subwoofers and a subsonic filter set to 25-35hz while Bass EQ is set to 0dB.

What is clipping?

-Clipping is a waveform distortion that occurs when an amplifier is overdriven and attempts to deliver an output voltage or current beyond its highest capability.

Why are my subwoofers popping?

-In a sound wave, you will notice that the sides of the clipped signal are vertical. That means that the signal will try to move the subwoofer’s cone from all the way forward to all the way backward in zero amount of time, traveling at the speed of infinity. Nothing travels that fast, and the subwoofer will either tear itself apart trying, or the flapping cone wobbles just enough to jam the coil in the magnet’s voice coil gap.

Why does my amp have two positive (+) and two negatives (-) outputs?

-Both of the negative terminals connect to one negative terminal on the PCB board within the amplifier. Then both of the positive terminals connect to one positive terminal on the PCB board within the amplifier. This design function allows for the ability to wire various subwoofer configurations to an individual amplifier.

What amplifier should I choose for my speakers?

-RMS is going to be the constant power provided to desired speakers, we recommend choosing an amplifier that can output the correct RMS rating for the speakers you purchased.

How do I reset the amplifier’s protection circuitry?

-To take your Precision Power amplifier out of “protection mode” you will have to disconnect all wiring into the unit altogether. This includes the remote wire, RCA’s, speaker wire, and ground and power wire. The unit will have to sit, completely disconnected, for several minutes.

How do I break in my subwoofer(s)?

-First, you will want to make sure that the settings on your radio are flat or at zero. You should never have to use “bass boost” or “loudness” with a properly tuned system, so please keep these settings off. You can use the subwoofer level on your radio for fine-tuning. You’ll want to get your system tuned to a good sounding level that is loud but with no distortion or popping. Take your time. Listen carefully to the sound being produced by the subwoofer(s). Once you have found your ideal level, drop your settings (gain) to half of that. For instance, if you are at half gain, drop it down to a quarter gain. This is your “break-in” setting. You will want to keep these settings for the first 24 to 36 hours of actual playtime on the new subwoofer(s). We find that it is usually about a week of regular music listening in a daily driven vehicle. After those initial 24 to 36 hours, you can retune your system back up to the initial setting.

NOTE* this is the simplest explanation of only one approach to break in your new Precision Power subwoofer(s). There are many more involved methods that require specialized tools but, this method is a basic suggestion. Let us know if you have any other questions.

What is the difference between dual 2Ω subwoofers and dual 4Ω subwoofers?

-We often experience the question, “Which coil configuration is better; Dual 2-ohm or Dual 4-ohm”. In actuality, neither is better than the other. Simply put, the difference in the coil configuration helps determine the impedance (or resistance) an amplifier will see when the subwoofers are wired to the amplifier. You will want to examine the capabilities of your amplifier and the number of subwoofers you will be connecting per amplifier in choosing which coil configuration will work most suitable for your setup.