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Equalizers & Sound Processors

For those who want the most out their car audio system, a quality sound processor is a must. After some slight adjustments, your system will sound like it has been professionally tuned and optimized. Tune your system to perfection with these digital sound processor DSPs, equalizers, crossovers, and get more bass with a bass reconstruction processor like the Epicenter. Getting a high quality LOC is also a must for those looking to integrate and add bass while retaining their factory stereo. Learn more about digital sound processors and to find out which type would be best for your car audio system.


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PAC TL-PTG2 (TLPTG2)

Tone Generator and Speaker Polarity Tester with RCA Cable Tester

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Tone Generator and Speaker Polarity Tester with RCA Cable Tester

&bull Tone Generator • Speaker Polarity Tester
• Perfect Troubleshooting and Testing
• Output Range of 0-8 Volts
• Includes RCA and Alligator Clips
• 9V Speaker Popper
• Auto Shutoff

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$50.99

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&bull Tone Generator • Speaker Polarity Tester
• Perfect Troubleshooting and Testing
• Output Range of 0-8 Volts
• Includes RCA and Alligator Clips
• 9V Speaker Popper
• Auto Shutoff

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Price: $50.99

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Memphis MEMBX

Digital Bass Restoration Processor Expander

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Digital Bass Restoration Processor Expander

• Digital Bass restoration processor
• High/Low level inputs
• Max 9.5v output
• Variable Q and Frequency control
•Remote bass control included

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• Digital Bass restoration processor
• High/Low level inputs
• Max 9.5v output
• Variable Q and Frequency control
•Remote bass control included

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Price: $114.95

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Axxess AXDSPH-GM33

Allows you to add a DSP to the factory system for GM 2022-2024

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Allows you to add a DSP to the factory system for GM 2022-2024

• Plug and Play T-harness for faster installation
• 15-band graphic EQ or 5-band Parametric EQ
• Can be used with OE and aftermarket radios
• Settings adjusted wirelessly from smart device
• Selectable high pass, low pass, or bandpass filters

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• Plug and Play T-harness for faster installation
• 15-band graphic EQ or 5-band Parametric EQ
• Can be used with OE and aftermarket radios
• Settings adjusted wirelessly from smart device
• Selectable high pass, low pass, or bandpass filters

Alpine PXE-0850X

8-Channel Class-D 25W RMS Amplifier with Digital Sound Processor

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8-Channel Class-D 25W RMS Amplifier with Digital Sound Processor

• Digital Sound Processor
• Music & navigation sound mixing
• Can arbitrarily adjust the volume ratio of main/sub audio source
• Auxiliary sound source switching

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• Digital Sound Processor
• Music & navigation sound mixing
• Can arbitrarily adjust the volume ratio of main/sub audio source
• Auxiliary sound source switching

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Price: $899.95

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Essential add-ons
Belva BBIC65

5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable (CCA)

$29.99

$9.99

Add to cart
NVX XIV65

V-Series: 5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable

$49.99

$29.99

Add to cart
Stinger SI4612

12 ft. of 6-Channel 4000 Series RCA Interconnect Cables

$73.00

$28.99

Add to cart
NVX XIV25

V-Series: 5m (16.40 ft) 2-Channel RCA Audio Interconnect Cable

$18.99

$12.99

Add to cart
NVX XIX25

X-Series: 5m (16.40 ft) 2-Channel RCA Audio Interconnect Cable

$29.99

$18.99

Add to cart
Stinger SGW991

9 Conductor Speedwire 100ft Roll

$159.00

$88.00

Add to cart
SMD DD-1

Distortion Detector/Analyzer

$207.99

$199.99

Add to cart

AudioControl DM-RTA

5 in 1 Signal Analyzer and Multi-Test Tool

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5 in 1 Signal Analyzer and Multi-Test Tool

• Test and Measure Any Signal
• Balanced Line Level Inputs and Outputs
• Unbalanced Line Level Inputs and Outputs
• Speaker Level Inputs (handles up to 400 watts)
• Microphone Input with 48V Phantom Power (microphone sold separately)

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$695.00

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• Test and Measure Any Signal
• Balanced Line Level Inputs and Outputs
• Unbalanced Line Level Inputs and Outputs
• Speaker Level Inputs (handles up to 400 watts)
• Microphone Input with 48V Phantom Power (microphone sold separately)

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Price: $695.00

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Steve Meade Designs IM-SG

Impedance Meter / Signal Generator

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Impedance Meter / Signal Generator

• Impedance Meter/Signal Generator
• Obtains Driver's T/S Parameters
• Find Tuning Frequency of Passive Radiator
• Locate Rattles in Vehicle

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• Impedance Meter/Signal Generator
• Obtains Driver's T/S Parameters
• Find Tuning Frequency of Passive Radiator
• Locate Rattles in Vehicle

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Price: $451.99

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Axxess AXDSPX-BMWM25 Digital signal processor and T-harness

Allows you to add an aftermarket amplifier to the factory system in select 2010-2020 vehicles from BMW With MOST25 Amplifier

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Allows you to add an aftermarket amplifier to the factory system in select 2010-2020 vehicles from BMW With MOST25 Amplifier

• Plug and Play T-harness for faster installation
• 31-band graphic EQ or 5 Band Parametric EQ
• Designed for MOST® amplified sound systems
• Compatible with both Android and Apple devices
• Settings adjusted via Bluetooth® in a smart device
• Selectable high pass, low pass, or bandpass filters

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• Plug and Play T-harness for faster installation
• 31-band graphic EQ or 5 Band Parametric EQ
• Designed for MOST® amplified sound systems
• Compatible with both Android and Apple devices
• Settings adjusted via Bluetooth® in a smart device
• Selectable high pass, low pass, or bandpass filters

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Price: $389.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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NVX XBBR2

2-Channel Bass Restoration Processor and Line Output Converter with Impedance Matching and Remote Level Control

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2-Channel Bass Restoration Processor and Line Output Converter with Impedance Matching and Remote Level Control

• Active 2-channel bass restoration processor
• Parametric Bass Controls
• Up to 9.5 Volts of output
• Load selection switch (20, 60, or 20K ohms)
• Remote bass level control included
• Preamp and speaker-level inputs
• Auto turn-on
• LED Clip indicator

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• Active 2-channel bass restoration processor
• Parametric Bass Controls
• Up to 9.5 Volts of output
• Load selection switch (20, 60, or 20K ohms)
• Remote bass level control included
• Preamp and speaker-level inputs
• Auto turn-on
• LED Clip indicator

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Price: $69.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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Axxess AXLOC-NIS

2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier in Nissan 1995-2013

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2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier in Nissan 1995-2013

• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

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• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

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Price: $49.99

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Earthquake Sound EQ-4000BT v2

12dB 4-Band Bluetooth™ Wireless Parametric Equalizer with Sub Level Control

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12dB 4-Band Bluetooth™ Wireless Parametric Equalizer with Sub Level Control

• 4 band Parametric equalizer
• 3 Stereo RCA Outputs (front, rear and subwoofer)
• 9 volts Max RMS outputs
• Volume and subwoofer level control
• Blue background LED

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$179.99

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• 4 band Parametric equalizer
• 3 Stereo RCA Outputs (front, rear and subwoofer)
• 9 volts Max RMS outputs
• Volume and subwoofer level control
• Blue background LED

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Price: $179.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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Essential add-ons
NVX XIV23 V-Series: 2-Channel RCA Audio Interconnect Cable

V-Series: 3m (9.84 ft) 2-Channel RCA Audio Interconnect Cable

$14.99

$10.99

Add to cart
NVX XIX23 X-Series 2-Channel RCA Audio Interconnect Cable

X-Series: 3m (9.84 ft) 2-Channel RCA Audio Interconnect Cable

$24.99

$16.99

Add to cart
NVX XIV43 V-Series 4-Channel RCA Audio Interconnect Cable

V-Series: 3m (9.84 ft) 4-Channel RCA Audio Interconnect Cable

$24.99

$12.99

Add to cart
NVX XIV65 V-Series 6-Channel RCA Audio Interconnect Cable

V-Series: 5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable

$49.99

$29.99

Add to cart
NVX XWS1625 25 ft. of 16 Gauge Speaker Cable/Wire

25 ft. of True Spec 16 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)

$29.99

$19.99

Add to cart

PAC LP3-2

L.O.C. PRO Series 2-Channel Line Output Converter

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L.O.C. PRO Series 2-Channel Line Output Converter

• 2-Channel LOC PRO Series
• 33% Smaller Size Gives More Room For Vital Components
• 55 Watts Per Channel
• Speaker Level Input to RCA Level Output
• Single Dial

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• 2-Channel LOC PRO Series
• 33% Smaller Size Gives More Room For Vital Components
• 55 Watts Per Channel
• Speaker Level Input to RCA Level Output
• Single Dial

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AudioControl LC8i - Black

8 Channel Line Output Converter with Aux Input

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8 Channel Line Output Converter with Aux Input

• Eight Speaker Level Inputs – Can Accept 400 Watt Signals!
• RCA Auxiliary Input for external device integration
• GTO™ Signal-Sensing Input
• Internal Channel Summing
• Line Output Converter

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• Eight Speaker Level Inputs – Can Accept 400 Watt Signals!
• RCA Auxiliary Input for external device integration
• GTO™ Signal-Sensing Input
• Internal Channel Summing
• Line Output Converter

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Price: $159.00

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Kicker KEYLOC® (47KEYLOC)

KEY series powered line-out converter; RoHS Compliant

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KEY series powered line-out converter; RoHS Compliant

• 2-channel active line output converter
• 2 speaker-level inputs with up to 400 watts RMS power handling
• 2 preamp-level outputs (up to 10V)

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

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$129.99

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• 2-channel active line output converter
• 2 speaker-level inputs with up to 400 watts RMS power handling
• 2 preamp-level outputs (up to 10V)

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Price: $129.99

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Cerwin-Vega CVM3

4-Channel Bass Maximizer Processor Amplifier

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4-Channel Bass Maximizer Processor Amplifier

• 2-Channel Preamp Inputs and Outputs
• Built-In Subsonic Filter
• Wired Dash Mount Remote Included
• Small Footprint

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• 2-Channel Preamp Inputs and Outputs
• Built-In Subsonic Filter
• Wired Dash Mount Remote Included
• Small Footprint

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Price: $109.99

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NVX XMICROLOC4

4-Channel 600W Micro Line Output Converter with Remote Turn-on Trigger

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4-Channel 600W Micro Line Output Converter with Remote Turn-on Trigger

• 4-Channel Micro Line Output Converter
• Input Circuit corrects crossover distortion
• Individual adjustable outputs
• Auto turn-on via DC offset
• Compact design allows for easy install

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$24.99

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• 4-Channel Micro Line Output Converter
• Input Circuit corrects crossover distortion
• Individual adjustable outputs
• Auto turn-on via DC offset
• Compact design allows for easy install

PAC LP7-4

L.O.C. PRO Series 4-Channel Line Output Converter with Remote Turn On

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L.O.C. PRO Series 4-Channel Line Output Converter with Remote Turn On

&bull 4-Channel LOC PRO Series
• Remote Turn on Wire
• Single Dial
• Signal-Sensing Circuit
• Surface Mount Construction
• Level Gain Adjustment

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$36.99

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&bull 4-Channel LOC PRO Series
• Remote Turn on Wire
• Single Dial
• Signal-Sensing Circuit
• Surface Mount Construction
• Level Gain Adjustment

Kicker KISLOC2 (46KISLOC2)

K Series 2-Channel Line Output Converter With 12-Volt Turn-on

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K Series 2-Channel Line Output Converter With 12-Volt Turn-on

• 2-ch speaker-to-RCA converter, LOC
• Compatible with OEM radios that have short circuit protection
• Take as much as 55 watts of input and deliver up to 8 volts of output

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$29.99

In stock

• 2-ch speaker-to-RCA converter, LOC
• Compatible with OEM radios that have short circuit protection
• Take as much as 55 watts of input and deliver up to 8 volts of output

NVX XMICROLOC2

2-Channel 300W Micro Line Output Converter with Remote Turn-on Trigger

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2-Channel 300W Micro Line Output Converter with Remote Turn-on Trigger

• 2-Channel Micro Line Output Converter
• Input Circuit corrects crossover distortion
• Individual adjustable outputs
• Auto turn-on via DC offset
• Compact design allows for easy install

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$14.99

In stock

• 2-Channel Micro Line Output Converter
• Input Circuit corrects crossover distortion
• Individual adjustable outputs
• Auto turn-on via DC offset
• Compact design allows for easy install

Axxess AXDSPL-WR

6-Channel DSP w/Water Resistant Enclosure

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6-Channel DSP w/Water Resistant Enclosure

• 15 Band graphic EQ
• 4 inputs and 6 individually assignable outputs
• Settings adjusted via Bluetooth® in a smart device application (tablet or mobile phone), compatible with both Android™ and Apple® devices
• Micro-B USB updatable
• Front and rear channels can be delayed independently up to 10ms

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Was $431.00 Details
$389.99

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• 15 Band graphic EQ
• 4 inputs and 6 individually assignable outputs
• Settings adjusted via Bluetooth® in a smart device application (tablet or mobile phone), compatible with both Android™ and Apple® devices
• Micro-B USB updatable
• Front and rear channels can be delayed independently up to 10ms

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Item added to your cart.

Price: $389.99

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7
Essential add-ons
Belva BBIC65

5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable (CCA)

$29.99

$9.99

Add to cart
NVX XIV65

V-Series: 5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable

$49.99

$29.99

Add to cart
Stinger SI4612

12 ft. of 6-Channel 4000 Series RCA Interconnect Cables

$73.00

$28.99

Add to cart
NVX XIV25

V-Series: 5m (16.40 ft) 2-Channel RCA Audio Interconnect Cable

$18.99

$12.99

Add to cart
NVX XIX25

X-Series: 5m (16.40 ft) 2-Channel RCA Audio Interconnect Cable

$29.99

$18.99

Add to cart
SMD DD-1

Distortion Detector/Analyzer

$207.99

$199.99

Add to cart

NVX XLOC24X

2 inputs / 4 outputs High Voltage Active Line Output Converter with Impedance Matching

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2 inputs / 4 outputs High Voltage Active Line Output Converter with Impedance Matching

• 2-Channel Speaker Level Inputs
• 4-Channel RCA Outputs
• Handles up to 40V (400 watts RMS)
• Provides up to 9.5 Volts of output
• Auto turn-on via DC offset or Audio detection 
• Load selection switch (20, 60, or 20K ohms)
• LED Clip indicator

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In stock

• 2-Channel Speaker Level Inputs
• 4-Channel RCA Outputs
• Handles up to 40V (400 watts RMS)
• Provides up to 9.5 Volts of output
• Auto turn-on via DC offset or Audio detection 
• Load selection switch (20, 60, or 20K ohms)
• LED Clip indicator

XLOC24X small

Item added to your cart.

Price: $44.99

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FAQ Frequently asked questions in Equalizers & Sound Processors


An amplifier equalizer, commonly known as an EQ, is a device that allows you to adjust the audio frequencies in your car audio system. It enhances the overall sound quality by giving you precise control over the bass, midrange, and treble frequencies. By using an EQ, you can customize the sound to your preferences and compensate for any acoustic deficiencies in your car's interior. Whether you prefer deep bass, crisp highs, or a balanced sound, an amplifier equalizer lets you fine-tune the audio output to suit your taste. It optimizes your listening experience and can significantly improve the clarity, detail, and depth of your music.
Most amplifier equalizers are designed to be compatible with a wide range of car audio systems. They can be used with factory head units, aftermarket stereos, and various amplifier configurations. Some EQs have preamp outputs, which make them compatible with amplifiers, while others can be directly connected to your car's speaker wires. However, it's essential to check the specifications and compatibility of the EQ with your specific car audio system. Some high-end equalizers may require additional connections or components, such as line drivers or crossover networks, to function optimally. To ensure a seamless integration and the best performance, consult the user manual or reach out to Sonic Electronix's customer support for expert advice.
Digital sound processors (DSPs) are advanced audio devices that offer more sophisticated signal processing capabilities compared to traditional equalizers. While both EQs and DSPs allow you to adjust the audio frequencies, DSPs provide additional features like time alignment, crossover settings, and parametric equalization. Time alignment enables you to delay certain speakers to ensure the sound reaches your ears simultaneously, enhancing the soundstage and imaging. Crossover settings allow you to set different frequency ranges for various speakers, preventing audio overlap and distortion. Parametric equalization in DSPs provides greater control over specific frequency bands, allowing you to make more precise adjustments. If you desire a more comprehensive audio tuning experience with enhanced control over your car audio system, a digital sound processor may be the ideal choice.
The installation process for amplifier equalizers and sound processors can vary based on the specific model and your car's audio system. Most EQs and DSPs come with detailed installation instructions that guide you through the process. Generally, you'll need to connect the equalizer or processor to your car stereo or amplifier using RCA cables or speaker wire connections. Some advanced DSPs may require additional connections to your car's battery and other components. If you are unsure or uncomfortable with the installation process, it's best to seek professional assistance from a car audio specialist or technician. Improper installation can lead to performance issues or damage to your car audio components. Sonic Electronix's trained staff can also provide guidance on the installation process and help you choose an EQ or DSP that suits your specific setup.
While an amplifier equalizer can help fine-tune your car audio system's sound, it is not specifically designed to eliminate noise or distortion caused by faulty components or electrical issues. Noise and distortion may result from various factors such as poor grounding, interference, or damaged speakers. If you're experiencing audio problems in your car audio system, it's crucial to identify the root cause. Start by checking all connections, ensuring they are secure and free of corrosion. If you suspect electrical interference, consider adding noise filters or isolators. Damaged speakers or amplifiers may require professional diagnostics and repairs. An amplifier equalizer can be a valuable tool to optimize your sound quality, but it's essential to address any underlying issues to achieve the best audio performance. If you're unsure about the cause of the noise or distortion, consult Sonic Electronix's customer support for troubleshooting advice and recommendations.

All About

Equalizers & Sound Processors
Information about Digital Sound Processors:

Most original factory stereos use preset equalization curves that are designed to get the most out of your car's factory speakers. When you upgrade to aftermarket speakers, your OEM stereo equalizer preset curves do not adjust, resulting in under performance from your aftermarket speakers. Processors reshape the output of your factory stereo preset equalization curves to ensure you get optimal performance out of your aftermarket amplifiers and speakers.

A parametric sound equalizer helps you tune your system to the perfect balance. These audio equalizers will also help eliminate infrasonic distortions for a crisper and clearer audio output. Adding a sound equalizer to your car will optimize your system's performance.

Electronic crossovers divide your music into high, low and midrange frequency ranges. Some of the units we carry are combinations of both stereo crossovers and stereo equalizers. Call us today if you need help choosing the right combo for your setup and budget.

Bass reconstructors, or bass enhancers, improve low frequency reproduction in a car audio system with at least one subwoofer. These bass expander products will help your subs produce accurate bass thumps.

If you're searching for top-notch Amp Equalizers & Sound Processors that will take your car audio experience to the next level, you've come to the right place. Our extensive collection features only the most reputable brands and models, ensuring that you can find the perfect Amp Equalizer or Sound Processor to enhance the audio performance in your vehicle.

Amp Equalizers & Sound Processors play a crucial role in optimizing your car audio system and delivering an exceptional listening experience. An Amp Equalizer allows you to fine-tune the frequency response of your audio, giving you precise control over bass, midrange, and treble levels. By adjusting these frequencies, you can tailor the sound to your preferences and achieve a well-balanced and immersive listening experience.

On the other hand, Sound Processors are designed to enhance and clean up your audio signal. They can correct audio imperfections and distortions that may occur during the recording or transmission process, resulting in crystal-clear and detailed sound reproduction. Sound Processors can also be used to eliminate background noise, reduce static, and enhance the overall clarity of your audio.

Aside from their sound-enhancing capabilities, Amp Equalizers & Sound Processors can also help optimize the performance of your car's audio system. They ensure that the power from your amplifier is distributed efficiently to your speakers, minimizing the risk of distortion and damage to your speakers. With Amp Equalizers & Sound Processors, you can achieve optimal audio quality and safeguard the longevity of your audio components.

At Sonic Electronix, we are dedicated to helping you find the best Amp Equalizers & Sound Processors for your specific car audio needs. Our team of audio experts is available to provide personalized assistance throughout your shopping journey. If you have any questions or need guidance in selecting the perfect Amp Equalizer or Sound Processor, don't hesitate to contact us at 1-502-200-8010. Our knowledgeable staff is eager to provide the information you need and assist you in making an informed decision that will elevate your car audio experience.

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