Car Audio Subwoofer Box For Sale Birmingham, AL2024-01-23T06:12:35-04:00

Car Audio Subwoofer Box For Sale in Birmingham, AL

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Best Selling Car Audio Subwoofer Box For Sale Near Birmingham, AL

Bestseller No. 1
QPower 12 Inch Heavy Duty Dual Sealed Carpet Covered Car Audio Vehicle Subwoofer Enclosure Woofer Box with Spring Loaded Terminals, Charcoal Gray
17 Reviews
QPower 12 Inch Heavy Duty Dual Sealed Carpet Covered Car Audio Vehicle Subwoofer Enclosure Woofer Box with Spring Loaded Terminals, Charcoal Gray...
  • High-performance 12-inch dual, sealed subwoofer enclosure box upgrades your audio system allowing you to experience a clearer and exceptional quality sound on your road trips
  • Sealed box provides deep, precise bass with an airtight enclosure housing for louder and more crisp audio; Features circular recessed panels with gold-tipped spring-loaded terminals
  • Crafted from heavy-duty medium-density fiberboard that's built to last; Coated in premium charcoal-colored carpeting for ultra-security and aesthetic appeal
  • Woofer box front is meticulously made from 1-inch thick medium-density fiberboard while the woofer body is made from 3/4-inch thick medium-density fiberboard
Bestseller No. 2
Rockville RVB10.1A 10 Inch 500W Active Powered Car Subwoofer+Sub Enclosure Box, Black
409 Reviews
Rockville RVB10.1A 10 Inch 500W Active Powered Car Subwoofer+Sub Enclosure Box, Black...
  • Rockville RBV10. 1A Single 10” 500 Watts Active Subwoofer Enclosure, Size: 10”, Peak Power: 500 Watts, RMS Power: 300 Watts, Nominal Impedance: Single 4-Ohm, 1. 5” Voice Coil, Inverted Carbon...
  • Frequency Response: 35Hz - 200Hz, Sensitivity: 88dB, Anti-Vibration Braced MDF Cabinet, Angled Back Fits Perfectly Against Rear Seats, Computer Tuned Bass Reflex Port, Blue/Black Aviation Grade Tweed...
  • Class AB Amplifier, High Speed MOSFET Power Supply, High Level Speaker Inputs, Low Level RCA Inputs, Built-In Low Pass Crossover (30Hz - 160Hz).
  • Accepts up to 8 Gauge Wire, 100mV - 5V Input Voltage, Power (Blue) & Diagnostic (Red) LED Indicators, 20A Fuse, Dimensions in inches: Length 15. 75" x height: 12. 99" x top width 10. 63" x bottom width:...
SaleBestseller No. 3
Sound Storm Laboratories US8 8 Inch Under Seat Powered Car Audio Subwoofer - 800 Watts Max, Low Profile, Built in Amplifier, for Truck, Boxes and Enclosures, Remote Subwoofer Control
15 Reviews
Sound Storm Laboratories US8 8 Inch Under Seat Powered Car Audio Subwoofer - 800 Watts Max, Low Profile, Built in Amplifier, for Truck, Boxes and Enclosures, Remote Subwoofer Control...
  • Water Resistance Level: Not Water Resistant
  • Built-in Amplifier - With a MOSFET power supply you get improved switching speeds, better performance with less power from the driver, lower gate-to-drain feedback capacitance, lower thermal impedance for...
  • PWM - Pulse Width Modulated design simplifies power supplies. It controls the output voltage and current precisely by removing the output current sensing loss & eliminating all secondary feedback...
  • Variable Low-Pass Filter - A low-pass filter is an electronic circuit that removes all the notes below the filter's frequency setting. You will use the Low-pass filter to primarily keep high notes out of...
Bestseller No. 4
Seventour 10' 800W Slim Under Seat Powered Car Subwoofer, Car/Truck Audio Sub built in Amplifier, New Upgrade with Blue LED Ambient Light
291 Reviews
Seventour 10" 800W Slim Under Seat Powered Car Subwoofer, Car/Truck Audio Sub built in Amplifier, New Upgrade with Blue LED Ambient Light...
  • Seventour ST-800 10 inch Ultra Slim Under Seat Active Powered Car/Truck Subwoofer with Built-In Amplifier, Enclosure made of cast aluminum for excellent heat dissipation and reliable performance.
  • This is a new 2024 upgraded car subwoofer audio that features a personalized spider speaker protector as well as a speaker LED ambient light ring design. When the car is started, the subwoofer lights up...
  • This ST-800 car subwoofer includes wired bass volume remote control. With gain, bass boost and crossover controls, peak power: 800 watts, giving you a stunning bass experience.
  • The Car Sub supports low level RCA inputs. It is also compatible with high level inputs, adjustable input sensitivity, thermal protection circuitry, short circuit protection circuitry, overload protection...
Bestseller No. 5
H YANKA SODA-10ASW 480W 10 Inch Compact Underseat Car Subwoofer with Built-in Amp, Slim Powered Subwoofer for Car/Truck/Jeep Audio
36 Reviews
H YANKA SODA-10ASW 480W 10 Inch Compact Underseat Car Subwoofer with Built-in Amp, Slim Powered Subwoofer for Car/Truck/Jeep Audio...
  • 【Powerful Bass Performance】Immerse yourself in a world of deep, resonant bass with the HYANKA 480W 10 Inch Compact Underseat Subwoofer. Boasting a robust RMS power of 120W, this sleek and compact...
  • 【Crystal-Clear Sound Quality】With a Total Harmonic Distortion (THD) of less than 0.5% and a Signal-to-Noise Ratio exceeding 90dB, our SODA-10ASW model delivers crystal-clear sound quality. Every note...
  • 【Wide Frequency Range】Experience the full spectrum of sound with a generous frequency response ranging from 20Hz to 180Hz. Whether you're a fan of heart-pounding beats or subtle background melodies,...
  • 【Flexible Input Options】The SODA-10ASW provides versatility with high and low-level input sensitivity options, making it compatible with a variety of audio systems. Connect effortlessly and enjoy...
Bestseller No. 6
Planet Audio P8AWK Low Profile 8 Inch Under Seat Powered Car Subwoofer - 800 High Output, Built-in Amplifier, for Truck, Boxes and Enclosures, Remote Subwoofer Control
30 Reviews
Planet Audio P8AWK Low Profile 8 Inch Under Seat Powered Car Subwoofer - 800 High Output, Built-in Amplifier, for Truck, Boxes and Enclosures, Remote Subwoofer Control...
  • Built-in Amplifier – Low-Profile Subwoofers that are amplified do not need an external source and are generally very compact
  • Mosfet Power Supply - With a MOSFET power supply you get improved switching speeds, better performance with less power from the driver, lower gate-to-drain feedback capacitance, lower thermal impedance for...
  • Variable Low-Pass Filter - A low-pass filter is an electronic circuit that removes all the notes below the filter's frequency setting. You will use the Low-pass filter to primarily keep high notes out of...
  • High & Low Level Inputs - A low level (RCA) input is measured in voltages. A high level (+/- wire) input is measured in wattages. Both essentially carry signal from your receiver to your amplifier to your...
SaleBestseller No. 7
12' Car Audio Speaker Subwoofer - 1600 Watt High Power Bass Surround Sound Stereo Subwoofer Speaker System - Non Press Paper Cone, 90 dB, 40 Ohm, 60 oz Magnet, 2 Inch 4 Layer Voice Coil - Pyle PLPW12D
5,181 Reviews
12' Car Audio Speaker Subwoofer - 1600 Watt High Power Bass Surround Sound Stereo Subwoofer Speaker System - Non Press Paper Cone, 90 dB, 40 Ohm, 60 oz Magnet, 2 Inch 4 Layer Voice Coil - Pyle PLPW12D...
  • 1600 WATT POWER: This high powered subwoofer system has a maximum power output of 1600 watt / 800watt RMS for full range surround stereo sound reproduction and impressive bass response so you can play your...
  • BUILT TO LAST: Features non-fatiguing rubber suspension, specially designed rubber magnet boot, non-press cone, specially treated foam surround, along with bumped and vented motor construction that keeps...
  • DUAL 4 OHM IMPEDANCE: The audio projection subwoofer has 90 dB and dual 4 ohm impedance rating that compensates the undersized wire found in many of today’s cars. It ultimately reduces distortion so you...
  • DUAL VOICE COIL: This complete subwoofer features 60 oz magnet structure and 2 inch 4 layer dual voice coil to enhance its performance and can handle higher operating temperatures. it also has spring...
SaleBestseller No. 8
Pyle Slim Subwoofer Box System - 400 Watts, Perfect for Mount Car Truck Audio Powered Subwoofer Enclosure, High Powered 8-inch Woofers with a Non-Pressed Paper Cone - PSBS8 Black
4 Reviews
Pyle Slim Subwoofer Box System - 400 Watts, Perfect for Mount Car Truck Audio Powered Subwoofer Enclosure, High Powered 8-inch Woofers with a Non-Pressed Paper Cone - PSBS8 Black...
  • 400 WATTS MAX POWER: This thin and slim subwoofer has a power rating of 400 Watts and is designed to fit easily under or behind your car's seats. Advance technology is used in this subwoofer to provide...
  • NEW LOUDER DESIGN: For this thin subwoofer, innovative acoustic engineers created the largest voice coil and magnet system possible, therefore creating this unique and powerful design that is sure to fit...
  • ADVANCED TECHNOLOGY FEATURES: Specifically designed and optimized to work with the built-in amplifier to produce the highest amount of output resulting to a high quality sound with resonance and adjustable...
  • SMOOTH CARPET FINISH: The subwoofer’s smooth finish allows it to have that elegant feel and gentle touch. This feature makes it very comfortable for the user and emphasizes the durability of the...
Bestseller No. 9
Pyle 12'' Dual Bass Subwoofer Box System - 600-Watt Slim Mount Truck Audio Subwoofer Enclosure with Rear Vented Design and Built-in Illuminating LED Lights
1 Reviews
Pyle 12'' Dual Bass Subwoofer Box System - 600-Watt Slim Mount Truck Audio Subwoofer Enclosure with Rear Vented Design and Built-in Illuminating LED Lights...
  • DIGITALLY OPTIMIZED SUBWOOFERS: These subwoofers boast peak power handling of up to 1100 Watts, RMS power handling of 600 Watts at 4 Ohm impedance, and a range of 30-300 Hz for unparalleled sound quality.
  • ENHANCED OUTPUT CAPABILITY: A specialized tuned port, designed with computer-aided precision, and featuring 4-Layer Dual Voice Coils significantly enhances output efficiency, ensuring consistent...
  • CUSTOMIZABLE BASS BOOST: Enjoy the convenience of variable bass boost, allowing you to tailor the low bass within the boost range to suit your personal preferences. Save time and effort while maximizing...
  • REAR VENTED DESIGN: The rear vented design, coupled with premium in-line carpeting, minimizes enclosure movement, delivering streamlined sound quality through both 12-inch subwoofers for superior audio...
Bestseller No. 10
8-Inch Low-Profile Amplified Subwoofer System - 600 Watt Compact Enclosed Active Underseat Car Audio Subwoofer with Built in Amp, Powered Car Subwoofer w/ Low & High Level Inputs - Pyle SBA8A.5
2 Reviews
8-Inch Low-Profile Amplified Subwoofer System - 600 Watt Compact Enclosed Active Underseat Car Audio Subwoofer with Built in Amp, Powered Car Subwoofer w/ Low & High Level Inputs - Pyle SBA8A.5...
  • BUILT-IN AMPLIFIER: The integrated amp in the compact subwoofer features low pass crossovers & a control for adjusting input sensitivity from 0.12V to 3.5V. Includes variable bass boost, control the...
  • 600 WATT POWER: Pyle’s 8" Amplified Low Profile Subwoofer System offers a maximum power of 600 watts. It lets you pump out some great low frequency bass volume to enhance the party vibe making it a great...
  • HIGH LEVEL INPUT: Speaker line inputs are known as high-level inputs. If your head unit does not have RCA outputs, you can use the speaker outputs for the audio source. Use the supplied cable and connect...
  • LOW PROFILE: With height of just 3", it's a perfect solution when space is an issue, it can easily fit under the seat of most vehicles! Total dimension is 12.8”x9.5"x3” & includes mounting hardware. A...
Bestseller No. 11
American Sound Connection Car Audio Custom 6' X 9' Sealed Hi Quality Pair Speaker Enclosure Unloaded Box
994 Reviews
American Sound Connection Car Audio Custom 6" X 9" Sealed Hi Quality Pair Speaker Enclosure Unloaded Box...
  • HIGH-QUALITY CONSTRUCTION: Crafted from premium materials, these enclosures are built to last. Their durable construction ensures that they can withstand the rigors of daily use and maintain their...
  • SEALED ENCLOSURE DESIGN: The enclosure design is engineered to deliver clean, distortion-free sound. It isolates the speakers from the vehicle's interior, preventing sound interference and enhancing...
  • CUSTOM FIT FOT 6" X 9" SPEAKERS: The BLK6X9-SALE enclosures are precisely designed to house 6" x 9" speakers, providing a snug and secure fit. This ensures optimal sound reproduction and minimizes unwanted...
  • DIMENSIONS: Width 12-1/2" x Height 7-1/2" x Bottom Depth 5" x Top Depth 7"
Bestseller No. 12
Skar Audio Dual 8" 1400W Loaded SDR Series Vented Subwoofer Enclosure | SDR-2X8D4...
  • SDR Series 8-Inch Dual 4-ohm Loaded Vented Subwoofer Enclosure
  • Peak Power: 1,400 Watts | RMS Power: 700 Watts
  • Pre-wired Internally for a 1 Ohm Final Impedance Load at the Terminals for an Easy Installation
  • Premium Vented Enclosure Made of 5/8" MDF and Finished in Black Carpeting
Bestseller No. 13
Pyle Bandpass Enclosure Car Subwoofer Speaker - 500 Watt High Power Car Audio Sound Component Speaker System w/ 10-inch Subwoofer, 2' Aluminum Voice Coil, 4 Ohm, Ported Enclosure System - Pyle PLQB10
519 Reviews
Pyle Bandpass Enclosure Car Subwoofer Speaker - 500 Watt High Power Car Audio Sound Component Speaker System w/ 10-inch Subwoofer, 2" Aluminum Voice Coil, 4 Ohm, Ported Enclosure System - Pyle PLQB10...
  • 700 WATT POWER: This high-powered audio projection subwoofer system has a maximum power output of 500-watt peak power / 250-watt RMS so you can play your favorite tracks as loud as you want and with style
  • 10" SUBWOOFER: This bandpass automotive speaker enclosure system is equipped with a 10" high power 4-ohm subwoofer for full range stereo sound reproduction and impressive bass response and a blue...
  • 2” ALUMINUM VOICE COIL: This car speaker has a 2” high-temperature aluminum voice coil and a 4-ohm impedance rating that compensates for the undersized wire found in most cars. Ultimately reduces...
  • RUBBER EDGE SUSPENSION: The high-performance car woofer speaker has a specially treated black rubber edge suspension so the only vibrations you'll hear will come from your music. Completes your existing...
SaleBestseller No. 14
Bbox Dual Vented 10 Inch Subwoofer Enclosure - Pro Audio Tuned Dual Car Subwoofer Boxes & Enclosures - Premium Subwoofer Box Improves Audio Quality, Sound & Bass - Spring Loaded Speaker Terminals
3,298 Reviews
Bbox Dual Vented 10 Inch Subwoofer Enclosure - Pro Audio Tuned Dual Car Subwoofer Boxes & Enclosures - Premium Subwoofer Box Improves Audio Quality, Sound & Bass - Spring Loaded Speaker Terminals...
  • DUAL 10 INCH VENTED SUBWOOFER ENCLOSURE: The Bbox 10 inch dual vented Pro Audio Tuned subwoofer box enclosure is designed for optimum bass response and low frequency reproduction which is ideal for lower...
  • SPECIAL FORMULA: We use Aliphatic wood glue on our 10" subwoofer enclosures to ensure an airtight seal between all MDF parts. Each 10 inch subwoofer box also gets a second application of glue around all...
  • HIGH GRADE MDF: Our subwoofer box enclosures are built with a durable MDF that is 3/4" thick for solid frequency response and accurate music reproduction and we use a CNC Miter to ensure an airtight fit...
  • AIRTIGHT RECESSED SIDE PANELS: We use quality materials like our special aliphatic resin wood glue and brad nails from a pneumatic nail gun to create a tight hold on the MDF parts during the glue drying...
Bestseller No. 15
Rockville RV8P 8' 400w Car Audio Subwoofer in Vented Sub Enclosure Box - 4 Ohm,Black
117 Reviews
Rockville RV8P 8" 400w Car Audio Subwoofer in Vented Sub Enclosure Box - 4 Ohm,Black...
  • Rockville RV8P Single 8” Subwoofer In Vented Enclosure. 4 Ohm Impedance.
  • 400 Watts Peak Power. 200 Watts RMS continuous music rating (Match up with an amp that delivers 200w RMS @ 4 ohms). 125 Watts RMS Test Tone rating (Playing test tones is brutal on a sub compared to music).
  • Bonded, Stapled and Braced 3/5" MDF Cabinet. Computer Designed, Under-Side Bass Reflex, Aero-Port System. Angled at 15% for near perfect in vehicle bass alignment.
  • Exterior: Logo embroidered high quality aviation grade tweed carpet.. Mono, gold-plated push style, speaker terminal. High-Power, High-Efficiency 8" Subwoofer. Injection Molded, Talc Filled, Brushed...
Bestseller No. 16
Pyle 10-Inch Low-Profile Amplified Subwoofer System - 900 Watt Compact Enclosed Active Underseat Car Audio Subwoofer with Built-in Amp, Powered Car Subwoofer w/Low & High-Level Inputs - PLBX10A
30 Reviews
Pyle 10-Inch Low-Profile Amplified Subwoofer System - 900 Watt Compact Enclosed Active Underseat Car Audio Subwoofer with Built-in Amp, Powered Car Subwoofer w/Low & High-Level Inputs - PLBX10A...
  • 900 WATT POWER:10" Amplified Low Profile Subwoofer System offers a maximum power of 900 watts. It lets you pump out some great low frequency bass volume to enhance the party vibe making it a great addition...
  • BUILT-IN AMPLIFIER: The integrated amp in the compact subwoofer features low pass crossovers & control for adjusting input sensitivity from 0.12V to 3.5V. Includes variable bass boost, control the...
  • LOW PROFILE: With a height of just 3", it's a perfect solution when space is an issue, it can easily fit under the seat of most vehicles! Total dimension is 14.2”x11.2"x3” & includes mounting hardware....
  • HIGH-LEVEL INPUT: Speaker line inputs are known as high-level inputs. If your head unit does not have RCA outputs, you can use the speaker outputs for the audio source. Use the supplied cable and connect...
Bestseller No. 17
Atrend Bbox Pro Audio Tuned 4 Way 6.5 Wedge Shape Car Speaker Boxes & Enclosures-Speaker Box for Great Sound Quality for Home & Vehicle-Push and Insert Speaker Terminals - Four way 6.5 Speaker Boxes
58 Reviews
Atrend Bbox Pro Audio Tuned 4 Way 6.5 Wedge Shape Car Speaker Boxes & Enclosures-Speaker Box for Great Sound Quality for Home & Vehicle-Push and Insert Speaker Terminals - Four way 6.5 Speaker Boxes...
  • 4 WAY 6.5 SPEAKER BOX ENCLOSURES: Pair of premium Pro Audio Tuned built universal speaker enclosures that reduces rattling and vastly improves your overall sound quality and bass of your speaker system....
  • HIGH GRADE MDF: Our speaker box enclosures are built with a durable high-grade MDF that is 5/8 inches thick built for solid frequency response and accurate music reproduction; The thick MDF panels allows...
  • AIRTIGHT RECESSED SIDE PANELS: By using quality materials and aliphatic resin wood glue the solid construction of our speaker boxes are airtight and resonant free to reduce rattles and improve the overall...
  • PREMIUM SOUND BOX: We use OEM charcoal carpet for the large subwoofer box to give it the durable factory look that matches the interior of most vehicles. It also helps absorb vibrations to produce the best...
SaleBestseller No. 18
MTX Terminator 12 Inch 1200 Watt 2 Ohm Single Voice Coil Audio Dual Loaded Subwoofer Speaker Box Enclosure for Vehicle Sound System, Black
3,789 Reviews
MTX Terminator 12 Inch 1200 Watt 2 Ohm Single Voice Coil Audio Dual Loaded Subwoofer Speaker Box Enclosure for Vehicle Sound System, Black...
  • Experience the unbeatable power of dual-loaded subwoofers with a maximum power of 1200W and a reliable RMS output of 400W, conveniently enclosed to deliver outstanding performance
  • Enjoy profound, resonant bass as the 2-inch aluminum single 2-ohm voice coil and the 48-ounce magnet work together in flawless harmony, delivering a powerful audio performance
  • Ensuring speaker durability features a rubber surround and polypropylene cone; Solid 5/8 inch MDF construction, covered in black carpet, keeps your subwoofers securely in place
  • Achieve the ideal fusion of style and power with a sealed enclosure featuring the iconic Terminator logo and the impressive performance of a Terminator mono block MTX amplifier
SaleBestseller No. 19
Pyle 8-Inch Low-Profile Amplified Subwoofer System - 600 Watt Compact Enclosed Active Underseat Car Audio Subwoofer with Built in Amp, Powered Car Subwoofer w/Low & High Level Inputs PLBX8A,Black
171 Reviews
Pyle 8-Inch Low-Profile Amplified Subwoofer System - 600 Watt Compact Enclosed Active Underseat Car Audio Subwoofer with Built in Amp, Powered Car Subwoofer w/Low & High Level Inputs PLBX8A,Black...
  • 600 WATT POWER: Pyle’s 8" Amplified Low Profile Subwoofer System offers a maximum power of 600 watts. It lets you pump out some great low frequency bass volume to enhance the party vibe making it a great...
  • BUILT-IN AMPLIFIER: The integrated amp in the compact subwoofer features low pass crossovers & a control for adjusting input sensitivity from 0.12V to 3.5V. Includes variable bass boost, control the...
  • LOW PROFILE: With height of just 3", it's a perfect solution when space is an issue, it can easily fit under the seat of most vehicles! Total dimension is 12.8”x9.5"x3” & includes mounting hardware. A...
  • HIGH LEVEL INPUT: Speaker line inputs are known as high-level inputs. If your head unit does not have RCA outputs, you can use the speaker outputs for the audio source. Use the supplied cable and connect...
Bestseller No. 20
Atrend Bbox Single Sealed 12 Inch Subwoofer Enclosure - Car Subwoofer Boxes & Enclosures - Premium Subwoofer Box Improves Audio Quality, Sound & Bass - Red & Black Spring Terminals - Charcoal
943 Reviews
Atrend Bbox Single Sealed 12 Inch Subwoofer Enclosure - Car Subwoofer Boxes & Enclosures - Premium Subwoofer Box Improves Audio Quality, Sound & Bass - Red & Black Spring Terminals - Charcoal...
  • SINGLE 12 INCH SEALED SUBWOOFER ENCLOSURE: The Bbox 12 inch single sealed wedge shaped Pro Audio Tuned subwoofer enclosure is designed for optimum bass response and low-frequency reproduction which is...
  • SPECIAL FORMULA: We use Aliphatic wood glue on our 12" subwoofer enclosures to ensure an airtight seal between all MDF parts. Each 12 inch subwoofer box also gets a second application of glue around all...
  • HIGH GRADE MDF: Our subwoofer box enclosures are built with a durable MDF that is 3/4" thick for solid frequency response and accurate music reproduction and we use a CNC Miter to ensure an airtight fit...
  • AIRTIGHT RECESSED SIDE PANELS: We use quality materials like our special aliphatic resin wood glue and brad nails from a pneumatic nail gun to create a tight hold on the MDF parts during the glue drying...

Last update on 2024-08-03 / Images Source Amazon Product API

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Choosing the Right Car Audio Crossover

Car Audio Passive & Electronic Crossover

When you hear people talk about car audio, you often hear about head units, amplifiers, speakers, subwoofers, and even car audio batteries and stiffening capacitors. One thing you rarely hear mentioned is the crossover; more often than not, this is a weak link in many car stereo systems. There is no such thing as a car that makes 1000 HP and achieves 100 MPG. Neither is there a speaker that plays 20Hz and 20,000Hz. And yes, when it comes to AUDIO, especially the two-channel audiophile crow that insists that this is possible, but once you put a measuring mic to it, the claims fade away like Joe Biden’s Twitter followers.

The range of the human hearing (20hz – 20khz) is often broken down into three segments when talking about sound reproduction. Those are bass, midrange, and treble, and although there is an upper and lower sub-segment for each, we will stick to those for simplicity’s sake.

If your goal is to build a high-quality car stereo system, you need to consider having a dedicated speaker to play each segment. That is the fundamental principle of an audiophile sound system. You will need a speaker for the bass capable of playing from 20hz to 100hz, this type of speaker is often called a subwoofer. You will also need a speaker that plays from 100hz to 3000hz. That is called a midrange speaker. Last, you will need a speaker that plays from 3000hz to at least 20,000hz. I say at least because it is even better if it plays beyond that. One of the reasons we use choose speakers for each of these frequency ranges is that each can play a given frequency range with excellent efficiency. In other words, a tweeter is not good at playing bass. Neither is a subwoofer at playing treble.

The Role of the Car Audio Crossover

Here is an issue, and that is that the output of the amplifier, for the most part, is full-range (20hz – 20khz). In other words, bass, mid, and high frequencies are all present. Here is where the Car Audio Crossover comes in. The crossover’s role is to split these frequency segments so that each speaker gets the range they are most efficient at playing. That is not as easy as that since there are many different typologies and types. However, regardless of that, there are two things to keep in mind. Those are slope and frequency.

Crossover Slope: In audio, filters are measured in what is known as order. An order equal a 6bd attenuation from the crossover frequency. So if you have a first order or 6db filter at 100hz, the signal will be 6dbs down in amplitude at 200hz. A first-order filter is often not enough to get rid of damaging frequencies, which is why a second-order filter is the most common filter in car audio. Third-order 18db filters are not rare but seen only in tweeters for the most part. Fourth-order 24db crossover is seldom used in car stereo because of phasing issues present in a confined space such as a vehicle.

Crossover Frequency: As previously hinted, the crossover frequency is the frequency where the filter starts to attenuate. Unlike in-home audio, it is not rare to gap the crossover frequencies to attenuate resonance from hard surfaces found in the vehicle. What does this mean? Let’s say that your tweeter and midrange should be crossed at 3500hz. But after taking an RTA measurement, you have a hump center at 4000hz. This is happening because the vehicle is summing the output of the tweeter and midrange. A rookie will try to use eq. A pro would leave the tweeter at 3500hz and take the midrange down to like 3200~3300hz, or until the hump is gone.

Types of Car Audio Crossover

After determining the slope and crossover frequency needed, you must choose a crossover type. And even though audio crossovers come in all shapes, sizes, and prices, they can be grouped into two main categories that being active and passive. The passive crossover requires no power and consist of a combination of inductors, capacitors, and resistors to shape the frequency range a speaker sees from the amplifiers. On the other hand, an active crossover needs to be powered, making it more susceptible to power line noise and distortion. Active crossovers also come in a wide range of typologies. The most common are fixed, programmable, variable, and digital.

Passive Crossover: As the name describe, a passive crossover requires no power. It utilizes coil (inductors), capacitors, and resistors to cut or pass frequencies. Although these are my favorite type of crossover, they are the most hated and misunderstood by the industry. That is because few truly master the design aspect. I like passive crossover because they go beyond filtering frequencies. They are pretty helpful in addressing the electromechanical deficiencies of the driver. Another worth mentioning, passive crossovers can get expensive when you use quality components.

DPS (Digital Sound Processor): These are the latest and greatest, according to some. Yes, DSP crossovers have come a long way not only in affordability but power as well. Most car audio DSP processors nowadays can be controlled via a smartphone app and can take a live sample from the listening environment and make accurate and predictable adjustments. However, they fail to address any electromechanical deficiencies the speakers may show. I think they tend to sound thin, but if you are listening to MP3s, that would not matter anyway.

Variable Electronic Crossover: These are the crossover most people will recognize as an electronic crossovers. Although electronic, it does not utilize a microprocessor. Therefore, for the most part, all signal shaping and filtering are done in the analog domain. These crossovers use pots and sometimes a switch to multiply the frequency. They are very common and affordable, although, as with most things in life, you get what you pay for, so don’t go overly cheap!

Programmable Electronic Crossover: If you are eyeing a high-end electronic crossover, you will likely be looking at a programmable electronic crossover. Rockford Fosgate and AudioControl make the most common pieces in this category. Both companies also employ this technology on their amps. These crossovers use chips or resistors soldered to a small pc board. Programmable electronic crossovers offer better signal-to-noise ratio and broader frequency range and flexibility.

Fixed Electronic Crossover: These electronic crossovers have a fixed frequency and, more often than not, use switches to select highpass, lowpass, bandpass, or bypass. It is rare to find it as a stand-alone unit, but almost a standard option in many amplifiers regardless of cost. Choosing an amp with the right crossover is something to consider.

Popular Searches Related to Car Audio Subwoofer Box For Sale in Birmingham, AL.

Without a question that when looking for Car Audio Subwoofer Box For Sale in Birmingham, AL you have many options. Although, car manufactuerer’s like Honda are making a lot more difficult to upgrade your car stereo you can still have an audiophile sound system in your vehicle, and we‘re sure that you will be able to find a professional car audio installation shop Birmingham, AL that it up to the task. We want to help you in this process be providing you the best deals on car audio in or near Birmingham, AL. From Car Stereo Single DIN to Car Audio Battery we got you covered. Many will tell you that music is life and at ThunderEletronics.Net we want to be your go-to if searching for Car Audio Subwoofer Box For Sale in Birmingham, AL.