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  1. Home
  2. Earthquake Sound Store
  3. Discontinued Earthquake Sound Car Audio & Electronics
  4. Discontinued Earthquake Sound Car Amplifiers
  5. Discontinued Earthquake Sound Equalizers & Sound Processors
  6. Discontinued Earthquake Sound Car Equalizers (EQs)

Discontinued Earthquake Sound Car Equalizers (EQs)

Optimize your car's audio with Earthquake Sound Car Equalizers (EQs) for the ultimate sound.

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Type of Equalizer
This determines the way the equalizer processes the signal from the source unit. A parametric equalizer allows to you adjust the center point of the frequency band you are adjusting as well the bandwidth which can be narrowed or widened. A graphic equalizer has fixed frequency bands and bandwidth and only the frequency bands can be adjusted. A digital equalizer uses a software program to tune your system.
A graphic equalizer typically has more adjustable bands and is less expensive, whereas a parametric will have fewer bands but offer a greater level of control and provide more tuning options. Digital equalizers will tune your system with the most detail and precision but require a computer and are typically a little higher in price.
Equalizer Bands
The number of graphic or parametric equalizer bands the receiver has. The better the EQ, the more likely you will be able to "tweak" your sounds to your desire.
Line Driver
A line driver is a small amplifier used to support the strength of the audio signal coming from the source unit.

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Earthquake Sound EQ-4000BT

4-Band + Sub-Parametric Equalizer with Built-in Bluetooth

EQ-4000BT big DISCONTINUED
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Earthquake Sound EQ-4000BT

4-Band + Sub-Parametric Equalizer with Built-in Bluetooth

• 12 dB/Oct. 4-Band Graphic Equalizer with Sub Parametric Equalizer Control
• Bluetooth capability built-in
• 3 Sets of 9V preamp outputs (front, rear and subwoofer)
• Fully retractable controls

• 12 dB/Oct. 4-Band Graphic Equalizer with Sub Parametric Equalizer Control
• Bluetooth capability built-in
• 3 Sets of 9V preamp outputs (front, rear and subwoofer)
• Fully retractable controls

Earthquake Sound EQ4000PXi

4-Band EQ-PXi Series Pre-Amplifier Equalizer

EQ4000PXi big DISCONTINUED
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Earthquake Sound EQ4000PXi

4-Band EQ-PXi Series Pre-Amplifier Equalizer

4-Band Digital Equalizer • Gold-Plated Contacts • Full Fader Action • Dual Input Capability • Master and Subwoofer Volume Control • Non-Faded Stereo Low Pass Output • Input for Auxiliary Accessories

1

4-Band Digital Equalizer • Gold-Plated Contacts • Full Fader Action • Dual Input Capability • Master and Subwoofer Volume Control • Non-Faded Stereo Low Pass Output • Input for Auxiliary Accessories

 
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