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Sonic Sub Boxes 6x9 PORT

Large 6" x 9" Rectangular Speaker Enclosure with Air Port (Individually Priced)

Discontinued
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This item has been discontinued

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  • 6" x 9" Ported Enclosure
  • Mounting depth: 7-1/2"
  • Cutout diameter: 8-7/8" x 6"
  • Box volume: 0.35 cubic feet
  • Total port volume: 0.01 cubic feet
  • Carpeted gray
  • Made from 3/4" MDF for optimal enclosure density
  • Spring loaded clip terminals
  • Dimensions: 8-1/8"D x 13-3/4"W x 9-1/8"H

Speaker Box / Enclosure Specifications

Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
6" x 9
Subwoofer Cutout Shape
This is the shape of the enclosures cutout hole and defines the style of subwoofer that can be installed.
Oval
Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Vented / Ported
Number of Subs/Speakers
This value represents the number of speakers or subwoofers that the enclosure accommodates.
1
Box Style/Shape
The box style or shape refers to the actual shape of the box. Square and rectangular boxes are straight-edged boxes on all sides, whereas hatchback and truck style enclosures feature an angled front or back design that allows for installation in places short on depth such as single cab pickup trucks. You can also use such enclosures in hatchback cars or other vehicles where space is a premium. Tube and cylinder shaped boxes were made popular by Bazooka and are a great option for those looking for a nice amount of bass without sacrificing lots of space. They may even fit in locations that slim truck boxes cannot fit in. If the enclosure is vehicle specific, we encourage you to read the product description to find out which vehicles the enclosure is made for.
Square/Rectangle
Cutout Diameter or Length
The actual diameter of the hole in the subwoofer box. Length is the measured length per side of a square subwoofer or speaker opening.
8-7/8" x 6"
Maximum Speaker Depth
Your subwoofer or speaker must not exceed this dimension in order to properly mount in this enclosure.
7-1/2"
Total Box Volume
The internal volume measurement in cubic feet before subwoofer magnet displacement.
0.35 cubic feet
Box Volume (Each Chamber)
This is the total air space inside each chamber of the empty subwoofer enclosure. By matching this value with the recommended air space of the subwoofer, you will be able to know if the subwoofer will match this box.
Height
The height of the item, measured from top to bottom, in inches.
9-1/8"
Width
The width of the item from left to right (side-to-side) measured in inches.
13-3/4"
Depth
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
8-1/8"
Wood Thickness
The thickness of the wood the enclosure is made of, measured in inches.
3/4"
Number of Terminals
The number of terminals the enclosure has. Each terminal represents 1 positive and 1 negative.
1
Terminal Type
Spring clip terminals work best with bare wire connections with small-gauge speaker wire, or pin-type connectors.

Binding post terminals are a sturdier, more versatile type of speaker terminal. Because binding post terminals are are threaded, you can tighten them down against the wire or connector for a tight, clean connection. The most popular style of binding post terminals is known as a "5-way binding post". This type can accept bare wire, or any of the common speaker wire connectors. Binding posts with the option to be used with banana clips are even more versatile

Spring posts are a hybrid of the two. Instead of using a thread and "screwing" them tight, they use a spring to allow the wire to fit and tighten against the terminal.

Spring clips
Box Exterior Color
The color of the enclosure's exterior/outer finish.
Gray
Box Finish
The material used on the outside of the box. Most boxes are carpeted to prevent exterior scratches; however vinyl is popular as it can often be color-matched to a near exact look of your leather factory interior.
Carpet

Port Details

Number of Ports
The number of ports the enclosure has.
1
Tuning Frequency
Port Diameter
The outside diameter of the port. Check the product's owner's manual for the recommended port diameter for your sub.
2"
Port Length
The length of the included port tubes. Many tubes are cardboard and may be cut to the length recommended by the sub's manufacturer. Check your product's owner's manual for the recommended port length for your sub.
2"

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Warranty and Return Policy

Parts Warranty Duration
Not warranted
Labor Warranty Duration
Not warranted
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
89%
4 Star
5%
3 Star
5%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.5
Value
4.8
Features
4.8
Design
4.7
Usability
4.8

Patrick

Brentwood, TN

Overall
Durability
Value
Features
Design
Usability

Unbelievable (with modification) vs the generic wedge box

July 31, 2011

This is an awesome deal for the price. I had the generic wedge .1cuft 6x9 box for awhile, and every time bass would hit, the speakers would distort (running Pioneer T-D6902R at 50watts) and cut out the mid-range sound. These are great speakers so I knew it wasn't their fault they were distorting. So I decided to get a larger box. This is just about the largest pre-built 6x9 box you can find (.358 cuft according to my measurements). Unfortunately it does have some issues. First it doesn't come with internal wires (not a problem, I had plenty of wire and plugs) and the "port" is misleading. First of all its not 2" diameter, its more like 1.75". Also the plastic has the strength of an egg shell, expect it to break as the gill was broken out of the box. And in a box that is .35cuft with that size of a port, it is tuned at 75'ish Hz.. And believe me it showed when I first installed the speaker. As soon as it went below that frequency the woofer lost its back pressure (and sounded horrible) due to the port size. It was acting like it was sitting in free-air. So I decided to extent the port. I bought 1.5" PVC pipe and put 7 inches of pipe into the port making it flush with the top. The pipe was a perfect fit within the port, showing it is not 2" as the descriptions claims. Well at .35 cuft with my new 7" 1.5 diameter port it is now tuned to 41hz (lowest I could make it). Plus there is only about a half to a quarter of an inch of space below the port and the base of the box (restricting airflow into the port) so it acts a lot like a sealed case. The speakers hit down to 30hz even though the box is not tuned for it. After I had done this the 2 6x9's rival my JL 8W3 subwoofer (running at 200 watts) for bass, plus they don't distort any midrange at all now when the bass hits. Sorry for the long review, I just wanted to let yall know how good of a box this is (with modifications). It will blow the top of any 6x9 in a wedge box will allow your 6x9 to perform at its best.

6 of 6 found this helpful

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JT

Mount Morris, IL 61054

Overall
Durability
Value
Features
Design
Usability

Great Deal

September 5, 2010

Great box really made the MTX 6x9 sound great

2 of 2 found this helpful

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Shankapotamus

Omaha, NE

Overall
Durability
Value
Features
Design
Usability

Great ported boxes!!

May 17, 2010

You can't beat these ported 6X9 boxes for the money. I doubt you could build them yourself for this price anyway? I was basically looking to get some extra bass out of my JL audio 6X9's and these little boxes answered my call. Its like night and day going from the standard wedge boxes to these. Its actually pretty amazing how low a pair of 6X9's can play in a ported box. If you have the room in the back of your vehicle then I highly recommend the ported boxes verses the sealed wedge ones!

2 of 2 found this helpful

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Chrome1275

Bellevue, Nebraska

Overall
Durability
Value
Features
Design
Usability

Slammin BOXES!

November 22, 2009

These ported boxes make a huge difference over the smaller sealed wedge shaped boxes. I have a pair of JL AUDIO VR series 6 X 9 's which are amazing speakers by the way! Anyway I had them mounted in a pair of the sealed wedge boxes and they sounded great with excellent mids and highs and pretty decent lows. However I had a sneaky suspicion they could play allot lower and louder in some ported boxes. So I ordered up the larger ported boxes here at Sonics website. And OH BOY what a difference a box makes!! I have them placed in my hatch of my little Honda civic facing the glass just like my old subs used to when I had them. And man do they ever hit for a pair of 6 X 9 's. They may not hit as hard as a pair of tens but they certainly put out enough bass and play low enough to satisfy me. A co-worker actually thought I had subs running in the back. He was shocked when I popped the hatch to reveal two 6 X 9 's. By the way the build quality is pretty good considering the price. They definitely could have been sealed better on the seams on the inside. I am going to take mine back out and run some silicone or glue in the seams to seal it better. But even so these boxes make your speakers sound amazing!! You won't be disappointed!!!

2 of 2 found this helpful

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dave

fremont,ca

Overall
Durability
Value
Features
Design
Usability

true fit

April 10, 2012

had some old 6-9 speakers that fit just fine in this encloser and they soud great.

0 of 0 found this helpful

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Retro Radio

Elizabethtown, PA

Overall
Durability
Value
Features
Design
Usability

Great speaker boxes

January 22, 2012

We purchased a set of these to demo speakers at car shows. The boxes are well made with thick wood product and good porting for that extra low sound. A good deal for a good product.

0 of 0 found this helpful

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wstrika

Georgia

Overall
Durability
Value
Features
Design
Usability

Awesome boxes

December 18, 2011

Bought these ported sub boxes for two 6x9 speakers. Boxes shipped with a generous amount of foam packaging peanuts. Boxes were not damaged in any way. They fit my speakers great!

0 of 0 found this helpful

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NAC

Phila., PA

Overall
Durability
Value
Features
Design
Usability

Sonic Sub Boxes 6x9 PORT

October 24, 2011

I would recommend this product as well made and quality construction throughout. It is all that I expected and more.

0 of 0 found this helpful

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Ben

Lexington, KY

Overall
Durability
Value
Features
Design
Usability

Solid box

October 4, 2011

These are awesome for the price. Using with cheap RF speakers in my firebird hatch they give a nice low frequency range. I didnt want to take up all of my trunk with subs but wanted better than stock low end and thump. This has been a great compromise. These boxes are sturdy, don't look sloppy or homemade and are sealed pretty well. As I suspected the port opens the sound up a lot. Recommended. I will be upgrading to some higher quality speakers to put in them most likely.

0 of 0 found this helpful

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don

buffalo ny

Overall
Durability
Value
Features
Design
Usability

nice enclosure

August 31, 2011

the box is built well, but the port tube could be made MUCH BETTER.

0 of 0 found this helpful

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Mark

Paradise, CA

Overall
Durability
Value
Features
Design
Usability

Sonic Sub Boxes 6x9 PORT

June 13, 2011

The boxes are nice and solid, but the plastic port grills are very thin and one was broken in shipping and when I bearly touched the other to mount the speakers and it broke.

0 of 0 found this helpful

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RD

Los Angeles, CA

Overall
Durability
Value
Features
Design
Usability

Increased bass!

June 2, 2011

Compared to a set of smaller enclosures I previously used, these boxes substantially improved the bass quality of the speakers in my 1973 Corvette. I am very happy with them.

0 of 0 found this helpful

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Tom

Gothenburg, NE

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Durability
Value
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Usability

Tom

May 29, 2011

The boxes help the speakers sound good. The only problem I had with them was the port tubes break off easily.

0 of 0 found this helpful

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Matt

Richmond, VA

Overall
Durability
Value
Features
Design
Usability

BASSSSSS

April 11, 2011

This box gives out some hella bass when I hooked it up to just one of my Kenwood 500 watt 5 way the bass thumped so loud I only got one thought I would get another but thats okay gonna get another one soon for my other 6x9 Kenwood There was only one problem and that was that when I got it the cheap plastic cross whatever things had broken off but thats okay I just finished it off and it looked even better other than that get it will def thump louder if your looking for bass

0 of 0 found this helpful

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kevin

urbana, OH

Overall
Durability
Value
Features
Design
Usability

great sound

February 23, 2011

Has great bass with just regular arc audio 6x9s

0 of 0 found this helpful

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James

Wilkes-Barre, PA

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Durability
Value
Features
Design
Usability

Awesome product!

January 19, 2011

I would recommend these to anyone. My car only had 2 speakers in the front doors and that wasn't enough to listen to any music rolling down the highway with the windows down. I bought these and threw my jvc's in them and they sound great. I definitely recommend paying the little extra and getting these cause of the ports. it helps a lot and gives them more bottom end.

0 of 0 found this helpful

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T

Canada

Overall
Durability
Value
Features
Design
Usability

Success

January 17, 2011

Replaced my aging aftermarket system in my Cherokee with a JVC KDR 610 HU, a pair of Pioneer 2 way 5.25" speakers for the front doors and a pair of Pioneer TS-A6973R 3 ways for the back in the standard "wedge" enclosures. I was extremely dissappointed with the terrible sound I was getting from the 6 x 9's. They sounded like they were in a tin can and distorted heavily at a flat setting and 1/2 volume!!!I know they can put out better sound than what they were....over 25 years ago when I was a teenager I had 6 x9's in the back of a Pinto and they sounded great....and with technology advancing,these new ones HAD to sound better than the old school ones.... So I ordered these bigger ported boxes from Sonic HOPING that it would give me the sound I was looking for. Mounted them as soon as they arrived and they have made a HUGE difference!!! The speakers boom as they should with clear crisp sound at high volumes. I am now very happy with my setup. Delivery was on time and the product arrived in good shape. The only drawback was the freight costs dbled the cost of the boxes.....but it was all worth it. These boxes make your 6 x9's sound 1000x better than they do in the small wedge enclosures.

0 of 0 found this helpful

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King Spot

Orangeburg, SC

Overall
Durability
Value
Features
Design
Usability

Great Product

January 6, 2011

Great product. Good construction. Very sturdy. The only fault I had was the plastic mesh infront of the little port broke off. NOT A PROBLEM though. I like my ports unrestricted anyway so i broke off the rest.

0 of 0 found this helpful

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Zach

Saranac, NY

Overall
Durability
Value
Features
Design
Usability

Awesome choice

February 3, 2011

I bought this box at a great price, and also because they seemed to be the only option made to fit my car perfectly. My subs sound great in this box, the design is perfect, definitely go with a ported box! The subwoofer terminals are a good design and easy to use, they're not those cheap, easily breakable clip type. This box says heavy-duty. Great for the application. I have 2 10" Infitys in it at 300w a piece & they sound incredible. Buy this box!

0 of 2 found this helpful

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Accessory Tools and Products

Accessories added

NVX XKIT42 - 4 Gauge Amp Kit

Pure Virgin Copper, 4 Gauge Amplifier Installation Kit

Your Price $89.99

Belva BAK42 - 4 Gauge Amp Kit

CCA 4 Gauge Wiring Kit with RCA & Speaker Wire

Your Price $29.99

8 Gauge - Stinger Amp Kit

Single amplifier 4000 Series complete installation kit.

Your Price $39.99

High-Performance Streetwires Speaker Wire

25 ft. of 12 Gauge speaker cable with twisted pair construction for improved power flow and fine-stranded copper windings.

Your Price $44.95

NVX SDRLR1 Universal Roller Tool

Install your sound damping with the SDRLR1 tool

Your Price $7.99

20 ft. of Dynamat Xtreme Trunk Kit

Keep your trunk from rattling and improve bass quality by using a sound dampening trunk kit.

Your Price $109.95

NVX SDBP40 - 40 ft. (10% More Than Competition)

40 ft. Bulk Pack of Sound Dampening Material

Your Price $119.99

36 ft. of Dynamat Extreme Bulk Pack

Make your sound system sound perfect by reducing road noise with 9 sheets of sound dampening material.

Your Price $159.95

Banana Clip Terminals

These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection.

Your Price $3.99

Insulated Female Quick Disconnect Connectors

100 pack of 12-10 Gauge yellow insulated quick disconnects.

Your Price $7.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles or can be used for your polyfil.

Your Price $6.99

Car Stereo and Speaker / Subwoofer Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $12.99

Product Summary

Manufacturer

Model Number

69PORT

Weight

8.00lbs

Internal SKU

69sqpt

Internal Product ID

20198

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Sonic Sub Boxes 6x9 PORT