JBL GTO939 GTO Series 6x9" 300W 3 Way Black Car Coaxial
Audio Speakers Stereo
Price as of 2026-08-11. Check Amazon for the current price.
Quick Decision
Price Intelligence
- Budget:$27–$37
- Mid-range:$37–$85
- Premium:$85+← You are here
Is This Right For You?
- •Buyers who prioritize quality over price in Car Speakers
- •Those who want a top-rated option — in the top 1% of Car Speakers by rating
- •You're on a tight budget — $124 above the category average of $76
- •Skar Audio FSX65-4 6.5" 300 Watt 4 Ohm Pro Audio Midrange — 87% cheaper at $27 (Score A)
📊 Based on data analysis of 9 products in this category.
Mubboo Score: B-
How we calculate the Mubboo Score
Quality (45%): customer rating, normalized to a 10-point scale
Popularity (35%): review volume vs the category leader, log-scaled
Value (20%): price position vs other Car Speakers
Computed from live Amazon rating, review count, and price across 9 Car Speakers available to US consumers · last refreshed 2026-08-11.
How It Compares
This Product JBL GTO939 GTO Series 6x9" 300W 3 Way Black Car Coaxial | Most Popular JVC CS-J620 300W 6.5" CS Series 2-Way Coaxial Car | Best Rated KICKER DSC6930 6x9-Inch | Best Value Skar Audio FSX65-4 6.5" 300 Watt 4 Ohm Pro Audio Midrange | |
|---|---|---|---|---|
| Price | $199.95 | $36.95 | $119.99 | $26.72 |
| Rating | 4.6/5 | 4.4/5 | 4.6/5 | 4.6/5 |
| Reviews | 3,034 | 23,554 | 3,470 | 3,076 |
| Mubboo Score | B- | A | B | A |
Quick Specs
- Color
- black
- MP3 player
- No
- Unit Count
- 2.0 Count
- Item Weight
- 4.4 Pounds
- Manufacturer
- Harman Kardon
- Model Number
- GTO939
- Power Source
- Corded Electric
- Speaker Size
- 9 Inches
What buyers say about Car Speakers
Themes from buyer reviews across this category — not review data for this specific model.
These budget speakers offer clear highs and good value, but expect limited bass unless you add a subwoofer. Be prepared to buy vehicle-specific adapters or mounting brackets for proper fit.
- Great value for money
- Crisp and clear sound quality
- Easy installation
- Significant improvement over factory speakers
- Surprising bass for budget speakers
- Weak bass response
- Installation may require additional adapters or modifications
- Durability concerns or distortion at high volumes
Related Video Reviews
- 📹 The best premium car speakers for 2026 | Crutchfield — CRUTCHFIELD
- 📹 Best 6.5 Inch Car Speakers 2026 - These Are The Only 6 To Consider — Consumer Betterment
- 📹 The best car speakers under $100 in 2026 | Crutchfield — CRUTCHFIELD
Key Features
- ✦6 x 9-inch three-way loudspeaker pair.
- ✦Plus One woofer cone with rubber surround
- ✦Adjustable mylar-titanium tweeter and supertweeter with level control
- ✦300 Watts peak power handling; 2 ohm impedance
- ✦Three-inch mounting depth
Source: product listing on Amazon.
About JBL
- 10 products in our database
- Average rating: 4.6/5 across all products
- Price range: $29.95 – $199.95
- Categories: Bluetooth Speakers, Car Speakers, Headphones, Noise Cancelling Headphones, Wireless Earbuds
If not the GTO939 GTO Series 6x9" 300W 3 Way Black Car Coaxial, consider these
Featured in Our Reviews
Bottom Line
JBL GTO939 GTO Series 6x9" 300W 3 Way Black Car Coaxial earns Mubboo Score B-. Priced at $200 — a premium option, above the category average of $76. Rated 4.6/5 from 3,034+ reviews. Strong buy if: buyers who prioritize quality over price in car speakers, those who want a top-rated option. Skip if: you're on a tight budget — JVC CS-J620 300W 6.5" CS Series 2-Way Coaxial Car (Score A, $37) may fit better.
Frequently Asked Questions
Is the JBL GTO939 GTO Series 6x9" 300W 3 Way Black Car Coaxial worth buying in 2026?
It earns a Mubboo Score of B-, with a 4.6/5 rating from 3,034 reviews — better than 100% of Car Speakers we track.
How much does the JBL GTO939 GTO Series 6x9" 300W 3 Way Black Car Coaxial cost?
It is currently $199.95 — premium-tier pricing for Car Speakers.
How does the GTO939 GTO Series 6x9" 300W 3 Way Black Car Coaxial compare to other Car Speakers?
The category's most-reviewed alternative is the JVC CS-J620 300W 6.5" CS Series 2-Way Coaxial Car (4.4/5, 23,554 reviews, $36.95). The GTO939 GTO Series 6x9" 300W 3 Way Black Car Coaxial carries a Mubboo Score of B- vs A.
Sources & References
- View on Amazon →
- Expert review review →
- Expert review review →
- Expert review review →
- Browse all Car Speakers on Mubboo →
Products available through US retailers. Prices in USD. Sales tax varies by state and is not included.
Mubboo may earn a commission on purchases made through affiliate links. This does not affect our Mubboo Score, product rankings, or editorial judgments. Prices are accurate as of the last sync (2026-08-11) and may change.