f150 subwoofer box design

We ship nationwide and have been in business for 20 years. You should use existing bolt holes in the truck floor under its rear bench, so you will not need to make up anything else. Extensive testing takes place with the goal of maximizing performance while minimizing loss of vehicle utility and comfort. recid = data.getElementsByTagName("recid")[cnt].firstChild.nodeValue; Powerful NVX VSW102v2 Subwoofer. Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. Sorry, the content of this store can't be seen by a younger audience. I previously had it in a ported box in another vehicle and it sounded amazingalmost like 2 12's. Back; . storeid: "*20acb45a5c1a874a71f3124c77b6892fbced", So far this is what I'm working with. but with proper system design, you also relieve the small front and rear speakers in your car from the burden of reproducing bass. parser=new DOMParser(); The Ford F-series line is very BallisticParts.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to amazon(.com, .co.uk, .ca etc) and any other website that may be affiliated with Amazon Service LLC Associates Program. Great looking set up. Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a Universal TXX-APC Series 12" 1600W 4 Ohm DVC Subwoofer by Audiopipe. I took it slow and easy and it took me about 8 hours to cut and fit, about another hour to glue and screw, and another two hours or so to bedline it. In the early 1970s, the demand was for reliable and sturdy work vehicles, designed for people with a strong desire of rolling up their sleeves and creating a better future despite the oil crisis. Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. Ford F-250/ F-350 Supercrew Cab 2017-2021 Dual BTS Subwoofer Box. Choose from our full line of F150 sub box available in various styles and designs at highly reasonable prices. We know that it's all about the sound so we design our Custom Fit Subwoofer Boxes for nearly every make and model vehicle. Copyright 2023, JLAudio. and woofers are placed in the front doors, subwoofer rear shelf or trunk of Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. This makes them sound . Subwoofer Boxes 2004-2008 FORD F150 SUPERCREW DUAL SUB BOX Customers Who Viewed This Product Also Viewed CONSOLE SUB BOX 2004-2008 FORD F150 SUPERCREW $249.00 Single Sub Box 2004-2008 FORD F150 SUPERCREW $199.00 2004-2008 FORD F150 EXTENDED CAB DUAL SUB BOX $239.00 Dual Sub Box 2009-2018 FORD F-150 SUPERCREW CAB $239.00 Xtreme Enclosures var dataObj = { success: function(rdata, textStatus, jqXHR){ Copyright 2016 SubThump All Rights Reserved. } the C240B connector. Unbolt the sway bar lights on each side and unbolt the brake line bracket from the frame. Our website uses cookies to improve our site user-friendliness (and to measure where our visitors come from). ss_handleResponse_inv(xmlDoc); } else{ // Internet Explorer Calculate speaker box volume, port length and other parameters without getting confused in formulas. while (data.getElementsByTagName("recid")[cnt] != undefined) { There are a few threads here and there's a great thread on f150online about a stealth console enclosure. Fitment data is not available at this time. Check out CT Sounds Box Design blueprints! A Subwoofer Box for your 09-23 Ford F-150 Supercrew Cab will make a dynamic change to your sound system. Stayinformed about new products and promotions.Sign-up today! If you have a woofer and you need a speaker box, look no further, these boxes are cnc cut and professionally constructed with pride in the USA; Florida to be exact. } I bought it loaded with a 10" Kicker sub and drive it with a 250 watt JL Audio amp. Call or text 850-674-6363for any information. Starting from 6.5" to 18", different blueprints are available and pretty easy to download! Home; Products. I had looked and didn't find anything. The list of new options includes a B&O Play audio system and a built-in 4G/LTE access point with Wi-Fi module, to which up to ten devices can be connected simultaneously. However, Ford F150 and Super Duty trucks lack bass. interior. $1,269.99. Privacy Statement - They were able . Hey all, I have an 05 screw and would like to get some bass. The result is a product thatexceedsthe conventional limits of system design, delivering performance so good that Truckin' magazine declared: You never would think that a single 10-inch woofer in a box made to blend in with the interior, could produce as much bass as a system with several 12-inch subwoofers. Regardless of the item chosen, Universal TS-PX Series 10" 700W 4 Ohm DVC Subwoofer with Edge Extension Technology PP Cone Woofer by Audiopipe. Looking for subwoofer boxes for your Ford F-150 SuperCrew Cab Truck? ss_jQuery(document).ready(function(){ Too bad most car stereos have weak sound quality, especially in the bass department. asymmetric inputs of the external amplifier and the balanced outputs of the Each Subwoofer enclosure is custom and specific to the F150 Supercrew. . Regardless of the item chosen, anyone Universal TS-PP2 Series 12" 1000W 4 Ohm DVC Subwoofer by Audiopipe. Make a subwoofer enclosure plan. } Regardless of the item chosen, Universal TS-CAR Series 15" 1000W 4 Ohm SVC Subwoofer by Audiopipe. Our engineers begin the Stealthbox design process by studying the acoustics of the target vehicle and evaluating potential Stealthbox locations. Regardless of the item chosen, Universal TS-FA Series 12" 500W 4 Ohm DVC Subwoofer by Audiopipe. Use of materials (printing, copying) is allowed with reference to the source. Discover more about the small businesses partnering with Amazon and Amazons commitment to empowering them. Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. in this case they and the subwoofer should be at some distance from each other. Designed and developed by Ford and KICKER, the F-150 Audio Upgrade kit utilizes the custom DSP built into the radio to provide super rich bass with improved mid and high frequency response. Add 500 Watts RMS of Bass to Your GMC. F-150 SuperCrew Subwoofer Box - SubThump Have a fun filled journey by listening to some great music while driving! Powerful diesel engines and 6.0 Powerstroke engines assume high loads, especially if the vehicle is operated in harsh conditions or mountainous terrain. Featured 2007-2018 Jeep Wrangler Front Fire Sub Enclosure w/Amp Shelf *Best Seller* $259.00 deeper bass. Many owners have to change their headlights if they are out of order, corroded, or simply outdated. This is not the only way to build enclosures, in fact its not how I build most enclosures. Universal TXX-BD Series 15" 1800W 4 Ohm Single Stack DVC Subwoofer by Audiopipe. Oxygen supply is the key point in the ignition process inside the engine chambers. The most recent generation debuted at the 2014 North American International Auto Show, featuring a modern body work, both in terms of design and in the building technique. crossDomain: true, This speaker box is designed to fit the 2009 and up body style f150 Super crew. Whether you are looking for mounting depth or downfire or upfire or a modified cut-out, we have it all for you just the way you want. cnt++; Good luck. interior. if you choose a sub and box, we'll recommend the right size of speaker wire, which you'll connect to the external amp that'll send power to the sub. Contact Us - xmlDoc=new ActiveXObject("Microsoft.XMLDOM"); If you are like most people, you spend more time listening to music in your car than any other place. We have MDF and Fiberglass subwoofer enclosures as well as the MTX Thunderform enclosures that come with the subwoofer and optional amplifier. Some hear the claps when the external subwoofer amplifier One of the options to solve this problem correctly: To install an aftermarket upgrade for your 2018 f150 you will need a box, a crunch amp and the low profile planet audio speaker. Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. I hav .. *New* 2015-2021 Colorado/Canyon Crew Cab Dual 10 Downfire Sub Box *Hot Product*. Dual 15" Custom Kerf Ported Subwoofer Box (HAND MADE IN THE USA) Down4SoundShop. Key Features: - Designed for in vehicle acoustical performance, not just fitment. However, it does not distort the sound too much. $4.44 . Under Seat Subwoofer Enclosure Design Register F150Live 2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck. I like storing my jack and tools under the rear seat so the stealth ported jumpseat enclosure is what I plan on doing when the funds rebuild. We can provide you with comprehensive Subwoofer Box Design Software for creating a high performance bass box. Cookie Policy - . }); Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. Do Not Sell or Share My Personal Information, http://stores.ebay.com/Rodneys-Custom-Speaker-Boxes, http://www.zenclosures.com/JL-Audio-/hljl10tw3.htm, 2006 F150 5.4 Sputtering - New thread CONDENSED. Today, its common to use structures such as a sealed box, a reflex, a subwoofer with a passive driver and an acoustic maze. effect is achieved. . However, the woofers and woofers are also mounted on the rear shelf if (window.DOMParser){ // console.log(errorThrown); COPYVERIFY Go Back Specials. . Regardless of the Universal TXX-BD Series 12" 2200W 4 Ohm Quad Stack DVC Subwoofer by Audiopipe. Wideband which is a universal speaker. Go Back Outlet. that is a sweet box. id = document.getElementById('ss_inv' + recid); Friday However, the acoustic design of a subwoofer depends on most of its properties, such as loudness, size, midrange and a number of features in sound. Regardless of the item chosen, Universal TS-CAR Series 6" 150W 4 Ohm SVC Subwoofer by Audiopipe. Imagine how much time you will need to calculate the length of a port by its area and the net volume of a box, then calculate the occupied volume by the port, add it to the net internal volume of a box, and only after that, calculate the dimensions of a box, taking into account the material thickness. var ss_jQuery = jQuery.noConflict(true); } Regardless of the item chosen, Universal TS-CVR Series 12" 750W 4 Ohm DVC Subwoofer by Audiopipe. This hole is open to the exterior and this custom-made plate along with the laser-cut gasket is the perfect solution. The box I bought came in matching carpet, is very well built all for $149. You are going to use the WPT 1212 Motorcraft connector, but youre only going to use three wires. Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. Looking for subwoofer box design ideas. Car acoustics All said and done it was around 350 shippped. 04-16 F250/F350/F450/F550 Ford Super Duty Crew Cab (For Non and Power Windows) Single Ported 10" Speaker Enclosure 12" available for an up-charge, may require shallow mounts Air Volume: 1.30 Total Cubic Ft. Mounting Depth: 4 1/4" Forward Firing Enclosure View Product Since I built mine I have the Zenclosure box I don't need. layout is as follows: small tweeters are placed on the torpedo, larger woofers Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. Don't settle for a prefab enclosure when you can build one cheap! This website provides all information for free viewing by an unlimited number of persons. Also, if you know how many cu ft it is please share! Without a box, due to the lack of the necessary damper, the speaker is very easy to pull out of the stroke, this is when the coil starts to come out of the magnetic gap, it is at this point that any slight distortion of the diffuser can lead to a coil's impact on the core (cylindrical magnetic core in the center of the coil), which leads to the detachment of the winding from the coil frame. Fords best-selling vehicle ever, the F-150 is a pickup truck originally launched in 1975. ss_inv_getinfo(); Check out CT Sounds Box Design blueprints! Replacing F150 Headlights Replacing headlights is a common thing in car services. Hand-Laid Fiberglass Enclosure. $4.44 Regular price $49.99 Sale price. there are seats in the door panelling, but with this option, a slight stereo is turned off. For maximum effect, the coaxial speaker is mounted at the rear (rear shelf, rear doors), and component at the front (torpedo, front doors). Subwoofer - A subwoofer delivers bass frequencies from 20 Hz-30 Hz to 400 Hz-600 Hz. Fitment. Regardless of the Universal TXX-BD Series 12" 1800W 4 Ohm Triple Stack DVC Subwoofer by Audiopipe. None seemed to give exactly what I wanted without sacrificing space. Matilda Magnetic build 2019 6.5' bed crew cab fx4 heavy tow.. frequencies. If you have a woofer and you need a speaker box, look no further, these boxes are cnc cut and professionally constructed with pride in the USA; Florida to be exact. Single 8 Inch Ported Subwoofer Box Design, Single 10 Inch Ported Subwoofer Box Design, Single 12 Inch Ported Subwoofer Box Design, Single 15 Inch Ported Subwoofer Box Design, Single 18 Inch Ported Subwoofer Box Design, Dual 6.5 Inch Ported Subwoofer Box Design, Dual 12 Inch Front Ported Subwoofer Box Design, Dual 12 Inch Side Ported Subwoofer Box Design, Single 6.5 Inch Sealed Subwoofer Box Design, Ported & Sealed Subwoofer Box Design Blueprints by CT Sounds, TROPO65-4 // 175 Watt RMS 6.5 Shallow Midrange Speaker, CT-7EQ // 7 Band 1/2 Din Parametric Car Audio Equalizer with AUX Input, MESO-8 // 800 Watts RMS 8 Inch Car Subwoofer, TROPO8-4 // 200 Watt RMS 8 Shallow Midrange Speaker, MESO-15 // 1500 Watts RMS 15 Inch Car Subwoofer. Ground-shaker is a leading speaker box company in Southern and Northern California with an objective to strive into a worldwide speaker box company. Same Day Shipping. After a month or two (sometimes three), a Stealthbox design is ready for production. We also have the MTX BassSlammer box which is an unloaded version of the Thunderform. With 0.80 cubic of air space and patent pending vent design, it serves as one of the best enclosures on the market. It is heavy and solid. id.innerHTML = msg2; I already have a 1200 watt amp and a nice sub. function ss_handleResponse_inv(data) { There are many prejudices about their design, their necessary number, frequency range and in general, the usefulness of this invention for humanity. This is my idea. 3-10s with .65 cft each, 1.95cft total. Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. Ford F-150 Supercrew Cab 2009-2023 Single Subwoofer Box. It is neither inferred nor implied that any item sold by CARiD.com is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page. Created by Ballisticparts.com, Ford F150 Automatic Transmission Identification, Chevy Truck Losing Power When Accelerating, How to Replace Blend Door Actuator Dodge Caravan, Best Cold Air Intakes for 7.3 Powerstroke, All Season Engine Oils: Best Oils For 6.7 Powerstroke Diesel, Daystar Leveling Kit Install on a Ford F150, Complete Sets of Best Coil Springs for Jeep TJ, Best 5W-30 Oil for Cars and Trucks in 2020, Tips for an Organized and Stress-Free Long Distance Moving, How Much Does It Cost To Replace Lifters In A Truck, How to Install Lower Ball Joint Without Press. It possesses relatively low efficiency, smooth ACH, large size and weight. The 300.1SBA features quick disconnect RCA, high level input and a power-remote-ground power connector that makes disconnecting and removal of the amp powered enclosure a snap. Regardless of the Universal APLB Series 10" 600W 8 Ohm SVC Subwoofer by Audiopipe. ss_handleResponse_inv(data); Browse our online catalog for a large choice of Ford F-150 subwoofers, offered in many configurations. Conventional subwoofers in the car cantake up a lot of room and get in the way of people and cargo. Terms of Service - Message and data rates may apply. Features Of The Product Port: The highlight of this subwoofer enclosure is its port. Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. This arrangement creates surround sound in the interior of the car. Regardless of the item chosen, Universal TS-CAR Series 12" 750W 4 Ohm SVC Subwoofer by Audiopipe. If you want to build your own box, using these blueprints can help you do your job quick and perfect. This is not your typical cheap subwoofer box. url: "https://www.supercrewsound.com/cgi-supercrewsound/sb/inv.cgi", Whether it's ported, sealed, 12", dual 10's, whatever. ss_jQuery.ajax({ type: "GET", Regardless of the item chosen, Universal TS-CVR Series 8" 350W 4 Ohm DVC Subwoofer by Audiopipe. Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. I am really just look for the best design for the side profile to make it look as close to factory as possible. As a rule, closed boxes are popular with critical and demanding music lovers. FSD130P - Ported Subwoofer Box. Outlet. There exist the following types of speakers: As for f150 audio system, it comes with 3-way front + lane rear + subwoofer. the speakers directly affects the sound quality of the music in the car Regardless of the item chosen, Universal TS-PP3 Series 12" 1600W 4 Ohm DVC Subwoofer by Audiopipe. The clap occurs because of the voltage mismatch between the Setting up a balanced receiver in front of the external amplifier. OEM ACM series This subwoofer enclosure is a combination of superior build, ultimate material quality, and flexible design. Does anyone have plans to build a sub box for a 09-11 screw. Regardless of the item Universal TXX-BD Series 12" 1800W 2 Ohm Triple Stack DVC Subwoofer by Audiopipe. All Rights Reserved. Your box is basically exactly what I am going to try and build. Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. Regardless of the item chosen, Universal TS-PP2 Series 15" 1200W 4 Ohm DVC Subwoofer by Audiopipe. Ford's best-selling vehicle ever, the F-150 is a pickup truck originally launched in 1975. QPower QBFORDFF09408 8 Inch Quad Port Subwoofer Enclosure Box with Underseat Frontfire for Ford F150 Super Crew, and 250/350 Super Duty Trucks 4 PORTS: 4-hole 8-inch openings allow for an ideal fit for 4 subwoofers CRISP SOUND: Underseat front fire capabilities feature louder and crisper sound Stealthbox for 2001-2003 Ford F-150 SuperCrew "Harley Davidson" & "King Ranch", 2000-2002 Lincoln Navigator with center-row bucket seats and console & 2002 Lincoln Blackwood . If you're using 3/4 MDF, deduct 2 x 3/4, or 1-1/2, from each dimension. Search. If you need a subwoofer box for your F-150 SuperCrew, we offer all the options you would need. Do a search for custom subwoofer enclosure. The only change being some sort of organizer tray on top of the box in front of the flip up armrest. D4S-D15-BOX. We also have the MTX BassSlammer box which is an unloaded version of the Thunderform. Rockville K5 W10K5S2 10" 1200w 2 Ohm Car Audio Subwoofer Sub 300w RMS CEA Rated! msg1 = msg.replace(/\"/g, '"'); Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. - Sound Quality First, Output Second Mentality. if (ss_rec_str != '') { The combustion power and cleanliness of the engine interior depend on the air quality and its volume. From $1,250.00 to $2,770.00. I built my system using the above sub and an NVX MVPA1 300W amplifier. The Zenclosure box is built very well from 5/8 MDF. This is made from Grade A 3/4 MDF, cut on our in-house CNC machine (Perfect cuts every time), assembled with the strongest wood bonding agents available, and sealed with polyester resin from the inside. Regardless of the item chosen, Universal TS-CAR Series 8" 300W 4 Ohm SVC Subwoofer by Audiopipe. Deduct the width and strength of the Plywood used to make the subwoofer box and get the internal volume. This box installs behind the frnt console and pumps out amazing bass. 1996-2023, Amazon.com, Inc. or its affiliates, Amazing budget subwoofers with great sound on sale. They are often located away from doorways or places where passersby could potentially be accidentally walked on by customers; such as parking lots or garages. Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. Audiopipe offers the products that will surely hit the spot and answer the purpose of those customers who opt for a perfect quality. 2015-2020 F150 Supercrew Rear Console Downfire Subwoofer Enclosure *New Best Seller* [F150SCR15-Console] $269.00 : Description Click to enlarge . Whether you are looking for mounting depth or downfire or upfire or a modified cut-out, we have it all for you just the way you want. Complete Bass and System Upgrade Package for 2017-Up GMC Acadia Vehicles. Enclosure is designed specifically for the F-150 100 watt RMS amp with 8" dual voice coil, long-throw woofer Back wall of cab mounting maintains flat load floor Copyright document.write((new Date()).getFullYear()) Super Crew Sound LLC. } Shop products from small business brands sold in Amazons store. - Different Emblem Options such as Raptor, Limited, Super-Duty, Roush, etc. TXX-BD Series 15" 1800W 4 Ohm Single Stack DVC Subwoofer (TXX-BDC2-15), APLB Series 10" 600W 8 Ohm SVC Subwoofer (APLB10), AR Series 8" 300W 4 Ohm SVC Subwoofer (TS-AR8), TS-CAR Series 10" 600W 4 Ohm SVC Subwoofer (TS-CAR10), TS-CAR Series 12" 750W 4 Ohm SVC Subwoofer (TS-CAR12), TS-CAR Series 15" 1000W 4 Ohm SVC Subwoofer (TS-CAR15), TS-CAR Series 6" 150W 4 Ohm SVC Subwoofer (TSCAR6), TS-CAR Series 8" 300W 4 Ohm SVC Subwoofer (TSCAR8), TS-CVR Series 10" 600W 4 Ohm DVC Subwoofer (TS-CVR10), TS-CVR Series 12" 750W 4 Ohm DVC Subwoofer (TSCVR12), TS-CVR Series 15" 1000W 4 Ohm DVC Subwoofer (TS-CVR15), TS-CVR Series 8" 350W 4 Ohm DVC Subwoofer (TS-CVR8), TS-FA Series 10" 400W 4 Ohm DVC Subwoofer (TSFA100), TS-FA Series 12" 500W 4 Ohm DVC Subwoofer (TSFA120), TS-FA Series 8" 300W 4 Ohm DVC Subwoofer (TSFA80), TS-PP2 Series 12" 1000W 4 Ohm DVC Subwoofer (TSPP212D4), TS-PP2 Series 15" 1200W 4 Ohm DVC Subwoofer (TS-PP2-15-D4), TS-PP3 Series 12" 1600W 4 Ohm DVC Subwoofer (TSPP312D4), TS-PX Series 10" 700W 4 Ohm DVC Subwoofer with Edge Extension Technology PP Cone Woofer (TS-PX-1050), TS-PX Series 15" 1000W 4 Ohm DVC Subwoofer with Edge Extension Technology PP Cone Woofer (TS-PX-1550), TXX-APC Series 12" 1600W 4 Ohm DVC Subwoofer (TXX-APC-12BL), TXX-BD Series 10" 1200W 4 Ohm DVC Subwoofer (TXX-BDC2-10), TXX-BD Series 10" 1400W 4 Ohm Triple Stack DVC Subwoofer (TXX-BDC3-10), TXX-BD Series 10" 1800W 4 Ohm Quad Stack DVC Subwoofer, TXX-BD Series 10" 800W 4 Ohm Single Stack DVC Subwoofer (TXX-BDC1-10), TXX-BD Series 12" 1800W 2 Ohm Triple Stack DVC Subwoofer (TXX-BDC3-12D2), TXX-BD Series 12" 1800W 4 Ohm Triple Stack DVC Subwoofer, TXX-BD Series 12" 2200W 2 Ohm Quad Stack DVC Subwoofer (TXX-BDC4-12D2), TXX-BD Series 12" 2200W 2 Ohm Single Stack DVC Subwoofer (TXX-BD4-12D2), TXX-BD Series 12" 2200W 4 Ohm Quad Stack DVC Subwoofer (TXX-BDC4-12), Ford F-150 Universal Bolt On Fender Flares. }); Hours Whether you are making a custom designed enclosure or using an off-the-shelf type, this amp is your professional solution to adding an amp to any subwoofer box. JL Audio's Stealthbox subwoofer systems elegantly solve this problem, while delivering a level of sub-bass performance that is way ahead of the curve. So while it's not exactly what you're looking for (dual 12's vs single 10, sealed vs ported, and a Screw vs an Xcab), it gives you an idea for the limited amount of space. Regardless of the item Universal TXX-BD Series 12" 2200W 2 Ohm Single Stack DVC Subwoofer by Audiopipe. Car sound systems have reached peak performance indeed, allowing people to enjoy the most clean sound while driving. $149.00. I've built several enclosures for my f150. Subwoofer Box Apocalypse DB-SA2715D1 Subwoofer Box JBL CS1214 Subwoofer Box Machete M15 v2 Sport Subwoofer Box Pioneer TS-A250D4 Subwoofer Box Skar Audio MA-8 Subwoofer Box Alpine SWR-1542D