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JBL GTO804

Grand Touring Series 8" 4-ohm subwoofer

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Item# 109GTO804 offer details

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JBL

What's a component sub and why would I want one?

A component sub is simply a speaker that's designed to reproduce bass once it's installed in a compatible enclosure. Think about the impact of a movie soundtrack in a big theater or even in your own home HDTV setup. A component sub can add the same kind of power to the music in your car. And a car sub is not all about the boom that you hear on a street corner (although that's cool too) - you can pair a component sub with your choice of enclosure to get bass just the way you like it, from tight and punchy to fat and loose. And once you experience music in your car with a well-tuned subwoofer, you'll never go back.

Our take on the JBL GTO804

by Ken Nail

Got an urge to get the lows bumping? JBL GTO subwoofers may just fit the bill. They work great in sealed or ported boxes, so you'll get bass the way you like it. And these compact subs offer a lower profile than most subs so they fit into smaller boxes that save you space.

The GTO804 8" subwoofer sports a polypropylene cone, with a big rubber surround that allows plenty of cone movement without sacrificing control. A heavy-duty dustcap reinforces the cone for lows that kick without distortion. A special integrated vent keeps the sub's internal workings cool and improves power handling capability.

Highlights:

  • 8" 4-ohm subwoofer
  • polypropylene cone with Hi-roll rubber surround
  • power range: 50-200 RMS watts (800 watts peak power)
  • frequency response: 30-400 Hz
  • sensitivity: 91 dB
  • mounting depth: 4-3/8"
  • sealed box volume: 0.30 cu. ft.
  • ported box volume: 0.60 cu. ft.
  • Recommended Q-Logic Box Type: 1
  • warranty: 1 year
  • Our 60-day money-back guarantee

Priced per speaker
 

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs

Features and Specs
Size
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8 -inch
Impedance
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4 ohms
Cone Material
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Polypropylene
Surround Material
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Rubber
Ideal Sealed Box Volume (cubic feet)
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0.3
Ideal Ported Box Volume (cubic feet)
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0.6
Port diameter (inches)
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2.5
Port length (inches)
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8.8125
Free-Air
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No
Dual Voice Coil
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No
Sensitivity
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91 dB at 2.83 watts
Frequency Response
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30 - 400 Hz
RMS Power Range (Watts)
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50-200
Peak Power Handling (Watts)
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800
Top Mount Depth (inches)
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4 3/8
Bottom Mount Depth (inches)
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N/A
Cutout Diameter or Length (inches)
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7 1/8
Vas (liters)
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16.42
Fs (Hz)
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29.6
Qts
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0.42
Xmax (millimeters)
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11.5
Parts Warranty
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1 Year
Labor Warranty
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1 Year

Product Research

Product Research
What's in the box?

Download owner's manual

  • 8" Subwoofer
  • Self-adhesive foam gasket
  • Owner's Manual
  • Technical Data sheet
  • Warranty card
  • JBL decal

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features

Woofer Cones: The JBL Grand Touring Series woofers feature polypropylene woofer cones with a heavy-duty molded dustcap.

Hi-roll Rubber Surrounds: The woofers feature hi-roll rubber surrounds to provide exceptional cone-edge suspension and long-throw linearity with control and stability at the excursion limits.

Spider: The woofer's progressive spider provides better control at the excursion limits and reduces woofer distortion.

Shallower Design: The Grand Touring Series' new proprietary frame, unique in-board motor structure, and new cone design allow the woofer to be a full inch shallower than equivalent-sized models.

Terminals: The woofer features binding post terminals which can accept bare wire, pin connectors, spade lugs, and single banana plugs. Because of the spacing between the + and - terminals, it cannot accept dual banana plugs.

 

Product Reviews

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Reviews for the JBL GTO804

Average Customer Review:

23 people say:

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Based on your filters,
3 customers also rated:
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Showing: 1-20 of 23
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5 out of 5

More than I expected

Written By Anonymous, Wilmington OH on Friday, March 08, 2013
 
I wanted some more bass in my 89LX mustang. I didn't want something that would take up too much space and this sub had pretty consistent reviews. I am powering it with a Kicker ZX200.2 off of one channel for now. I plan to let it break in fully before I hit it with 200 watts. It is in a Sound Ordnance bass bunker with polyfil. The sub has a lot of range and really shines in the lows. Not something I expected from an 8" sub. It is very accurate and fast. I'm not sure I even want to run it at 200 watts. The quality I am getting with 100 is pretty satisfactory. Now if you are looking for serious bass that drowns out your highs and mids you should probably look elsewhere. This sub is for sound quality. Bass you hear more than feel. Great for any genre of music.
Pros:
Serious bang for your buck.
Cons:
You don't have one yet.
Was this review helpful?    Yes | No
"Coolness Factor"
Build Quality
Ease of Use
Sound Quality
Value
 
5 out of 5

JBL GT0804

Written By Brian A, Midlothian, VA on Tuesday, January 22, 2013
Crutchfield Customer Review (What's this?)
 
Fit perfect, sounds great! Nice value and quality for the money!
Pros:
Price, quality, fit and sound
Cons:
None
1 out of 1 people found this helpful
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"Coolness Factor"
Build Quality
Ease of Use
Sound Quality
Value
 
5 out of 5

JBLGT804

Written By Brad, Moore, OK on Tuesday, March 20, 2012
Crutchfield Customer Review (What's this?)
 
Definitely a quality product for little cash.
Pros:
Sound quality.
Cons:
If installing in a Suburban with FACTORY 8in sub. You Must use longer screws. Was told it would fit in factory hole no problem. The magnet on subwoofer is much larger than factory therefore pushing it out further. When installing quarter kick panel back over sub be careful not to damage sub as it will be in the way now. Recommmend a bud to help.
5 out of 5 people found this helpful
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"Coolness Factor"
Build Quality
Ease of Use
Sound Quality
Value
 
3 out of 5

JBL GTO804

Written By tyler, SE Kansas on Thursday, July 07, 2011
 
The reason i bought this sub was because all the reviews were so good. a lot of people said it sounded like a 12". they were wrong. If you want something REALLY loud get something bigger. On a different note, it doesn't take up very much room and its not terrible for when it only has to hit for a short note, after that it gets kind of bogged down.
2 out of 11 people found this helpful
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5 out of 5

Great little sub

Written By Kraig H, Round Rock, TX on Monday, October 18, 2010
Crutchfield Customer Review (What's this?)
 
This is a great sub. I have it in a sealed box, pushed by an Alpine PDX-5. The sub is nice and tight, with great sound quality. I'd definitely recommend this
to anyone looking for an 8" sub. Plus, it's under $100!!! You can't get much better than that.

Make sure you give it a few weeks to break in. At first, mine wouldn't play very low. But after a few weeks, it really opened up. Now it sounds fantastic.
Definitely put a smile on my face.
7 out of 7 people found this helpful
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5 out of 5

awesome

Written By Lloyd D, Theresa ,Wi on Monday, October 04, 2010
Crutchfield Customer Review (What's this?)
 
Almost as loud as my twin 12 box with an 1800 watt amp pushing it. Put these little guys to
the test with a m1000 Alpine @ 2 ohms and wow . Rolloff is pretty severe below 50 hhz but
these are 8" speakers so I'm still impressed.
4 out of 8 people found this helpful
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5 out of 5

Saves space and sound great

Written By Guy, FPO, AE Overseas on Thursday, August 26, 2010
Crutchfield Customer Review (What's this?)
 
Sounds great in a .3 cuft mdf enclosure with polyfill. Great for the family car where you need more space and not excessive bass (even though it hits hard if you need it to.)
*****A great buy for this family guy!*********
4 out of 4 people found this helpful
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5 out of 5

wow!!!

Written By Anonymous, Jacksonville, FL on Tuesday, July 27, 2010
 
this little sub is amazing, what a great sound, quality, power, bass, wow! wow! wow! i telling u guys, if u want bass with broke u car, this is perfect 4 u, just like it is for me, i was looking for a sub that wouldn't let my car bumpers on the street in the middle of the traffic and put the glasses in the air, and this is perfect, like i said before, this have a very good bass and wont' t let u driving a peace of metal on the street, get it, and u won't be disappointed, i will recommend this for a friend definitely.
6 out of 37 people found this helpful
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5 out of 5

This sub hits!

Written By Adam, Fresno, CA on Tuesday, December 01, 2009
Crutchfield Customer Review (What's this?)
 
I purchased this sub to go inside a pre-fabbed plastic sealed box. I am pushing 150 RMS and 300 peak. This sub gets really loud before any distortion is heard. My car sounds like it has a 10" sub, but I am able to fit this in a much smaller space than a larger sub would take. My Jeep has amazingly loud, clean, tight bass without taking up much room. Great sub!
10 out of 10 people found this helpful
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5 out of 5

Unbelievable bass from an 8" sub

Written By Mike, Greenville, KY on Wednesday, November 25, 2009
Crutchfield Customer Review (What's this?)
 
I wanted more bass in my 1991 GMC regular cab truck. But, I was on a tight budget and wanted something small so I didn't have to sit up under the steering wheel. So, being on such a tight budget. I took the woofer out of an old Pioneer TS-TRX800 box. Unhooked the tweeter and replaced the sub with the JBL GTO804. It was a ported box and I wasn't expecting what I got from this little 8 inch sub. It hasn't even gotten broken in good yet and the bass is unbelievable and still getting better. This little sub puts out better bass than a lot of 10 inch subs I have had. If you are limited to an 8 inch Sub. This is the sub you want. I am gonna try the bigger JBL subs the next time I need a sub. If they are any better than this little 8. I know I won't be disappointed.
3 out of 3 people found this helpful
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5 out of 5

JBL GTO804

Written By casey, Las Vegas on Monday, May 18, 2009
Crutchfield Customer Review (What's this?)
 
Sounds great as a replacement for the weak stock sub that came with my 2008 Sequoia. No more cutting out and it shakes the mirrors no problem
5 out of 5 people found this helpful
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5 out of 5

great sub

Written By Jeff, San Diego, ca on Monday, March 02, 2009
 
wow this is a great sub fon an 8"I original had this sub in a ported box that someone gave me and I was not really all that happy with it. It was about as loud as the 6 in speakers in our other car. i had it in there for about 5 months but it was taking up too much space inside my f150 so i custom made a .3 cubic foot box that fits under the back seat. it got so much louder and sounds much better. i had no an 8 in sub could be so loud and i only have 150 watts rms. the sound quality is very good. I listen to a lot of metal and it plays the double bass flawlessly. When put in the right box, this sub will pound.
10 out of 10 people found this helpful
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5 out of 5

Great sub

Written By Andy, State College PA on Monday, November 17, 2008
Crutchfield Customer Review (What's this?)
 
People crack me up getting low sensitivity subs, then they need a zillion watts to drive them. Due to space limitations in a 65 VW bug, I built a small box for this and its mounted under the rear seat. The amp only has about 200 watts and I have way more clean, tight bass than I can possibly use. So - to sum it up - great speaker, great size and better sound than I thought was even remotely possible. I love it so much that am duplcating this system in my next project car.
9 out of 11 people found this helpful
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5 out of 5

wow !!

Written By Ralph, Pittsburgh , Pa. on Saturday, November 08, 2008
Crutchfield Customer Review (What's this?)
 
Extremely well made high quality speaker. When paired up with one the Q-Logic boxes it produces low clean bass. For an 8 inch woofer, the bass is simply amazing !
3 out of 3 people found this helpful
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5 out of 5

JBL GTO804

Written By Sean, Houston, TX on Thursday, October 16, 2008
Crutchfield Customer Review (What's this?)
 
Just awesome! They hit harder than the 8" JBL's they replaced!
3 out of 5 people found this helpful
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5 out of 5

JBL GTO804

Written By JEFF, SHREVEPORT, LA on Wednesday, August 20, 2008
Crutchfield Customer Review (What's this?)
 
Subwoofer far exceeds my expectations. I built a 0.3 cu ft sealed enclosure and have about 350 watts RMS available. After tweaking the crossover and gain, I have a fairly linear response to at least 40 Hz, but am seeing 31 and 25 Hz on the RTA when playing FM radio stations (I never realized FM could carry those frequencies). This is the first sub I've built that truly rumbles instead of booms. I cannot believe this driver can sound so good for its price range. JBL still understands bass.
6 out of 6 people found this helpful
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5 out of 5

GTO804 Nice Bump

Written By Scott, Manassas, VA on Friday, March 07, 2008
Crutchfield Customer Review (What's this?)
 
Installed in a .6 cu sealed custom box with a 200w RMS amp. This
subwoofer performs wonderfully and with a rich full sound from 30 to
150hz. I have it installed in a truck cab but think this thing could easily fill a
larger area.
5 out of 5 people found this helpful
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5 out of 5

JBL Subwoofer

Written By Bradley, Oklahoma City, OK on Monday, February 18, 2008
Crutchfield Customer Review (What's this?)
 
The subwoofer performs very well. Crutchfield shipped my product very fast and gave me excellent service.
1 out of 3 people found this helpful
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5 out of 5

sounds like a 10

Written By Ben, Phenix City, AL on Friday, January 18, 2008
Crutchfield Customer Review (What's this?)
 
I had a Punch 8" under the back seat of my F-150 supercrew and was never happy with the bass. Crutchfield tech recomended this JBL and it was a good change. I have always been a Fosgate fan and even won a contest with some Fosgate 10's one time but this JBL is much better. For the F-150 supercrew owners the Qlogic 8" truck box fits perfectly under the back seat. It is a budget freindly choice for bass unless you have $500 to spend on the MTX thunderform.
8 out of 9 people found this helpful
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5 out of 5

JBL GTO804

Written By basstech, Jacksonville, Arkansas on Thursday, September 07, 2006
Crutchfield Customer Review (What's this?)
 
Just got my sub in and was very impressed. I am a big fan of all jbl products and was not disappointed with this buy. I built my enclosure slightly oversized in a downfiring configuration. It has plenty of output for a sub in such a small box. Sounds more like a ten or a twelve. I bet four of these in say 1.5 cubes sealed would be awesome. Another A+ for jbl. Now how about my a3000gti?
5 out of 8 people found this helpful
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1-20 of 23 >>

Accessories

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Choose a sealed or ported box to house your subwoofer. See all categories & accessories

Sound Ordnance™ Bass Bunker Ported single 8" subwoofer enclosure (Model BB8-60V)
6 people say 
Your Price: $49.99
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Sound Ordnance™ Bass Bunker Pair of sealed 8" wedge-style enclosures (Model BB82W)
1 person says 
Your Price: $59.99
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StreetWires 14-gauge Super Cable™ Speaker Wire Translucent blue jacket — priced per foot (Clear)
3 people say 
Your Price: $1.49
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StreetWires 16-gauge Super Cable™ Speaker Wire Blue jacket — priced per foot
19 people say 
Your Price: $0.49
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StreetWires 12-gauge Ultra Cable™ Speaker Wire Blue/copper jacket — priced per foot
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Your Price: $1.99
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StreetWires 14-gauge Ultra Cable™ Speaker Wire Blue/copper jacket — priced per foot
33 people say 
Your Price: $1.49
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8 people say 
Your Price: $39.99
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Stinger PRO Series 16-gauge Speaker Wire Black jacket — priced per foot
7 people say 
Your Price: $0.39
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Dynamat 19100 License Frame Kit
8 people say 
Your Price: $14.99
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Dynamat Xtreme Wedge Pack 1 sheet, 4 square feet
3 people say 
Your Price: $39.99
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Dynamat SuperLite Tri-Pak Triple package — 3 sheets, 12 square feet (Model #10612)
7 people say 
Your Price: $69.99
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Dynamat Xtreme Trunk Kit 5 sheets, 20 square feet
11 people say 
Your Price: $169.99
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Dynamat Dynaliner One 54" x 32" sheet (1/8" thick)
3 people say 
Your Price: $69.99
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Speaker Grilles (8" waffle style)
19 people say 
Your Price: $7.99
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Grille Clamps (Front/top mount clamps)
7 people say 
Your Price: $3.99
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Metra Speaker Terminal Round terminal cup with binding post connectors (for do-it-yourself box builders)
3 people say 
Your Price: $9.99
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Metra Speaker Terminal Round terminal cup with spring clip connectors (for do-it-yourself box builders)
3 people say 
Your Price: $3.99
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Metra Speaker Terminal Square terminal cup with binding post connectors (for do-it-yourself box builders)
3 people say 
Your Price: $9.99
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Metra Speaker Terminal Square terminal cup with spring clip connectors (for do-it-yourself box builders)
4 people say 
Your Price: $3.99
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Your Price: $69.95

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Rated 5-stars by consumers

For a more in-depth review and enhanced detailed information on the JBL GTO804, please visit the Crutchfield website product page (/S-2C8YF37FcxW/p_109GTO804/JBL-GTO804.html ).

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Sealed & Ported Boxes

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Speaker Wire

StreetWires 14-gauge Super Cable™ Speaker Wire
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Dynamat

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License Frame Kit
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Speaker Grilles
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$7.99
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    JBL GTO804