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BIO-6-5-COX 6.5" Coaxial Car Speakers, Pair vs JBL Stage2 624

Buy the CT Sounds BIO-6-5-COX pair if you want a straight 6.5-inch factory replacement that can take amplifier power: 100W RMS per pair, 4-ohm, silk-dome tweeter. Pick the JBL Stage2 624 only if you need high efficiency from a stock head unit and can confirm it fits your car. The JBL's own specs conflict on size (5.25 in listed against a 6.5-inch class), so check fitment first. No current prices were provided for either, so compare live store prices on Deal.ai before buying.

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BIO-6-5-COX 6.5" Coaxial Car Speakers, Pair

BIO-6-5-COX 6.5" Coaxial Car Speakers, Pair

4.9· 39 ratings

Choose the CT Sounds BIO-6-5-COX if you have 6.5-inch factory cutouts and want a 4-ohm coaxial pair rated 100W RMS that can run off a head unit or a small amp.

Pros
  • 100W RMS per pair handles a small amplifier without strain
  • Silk-dome tweeter and polypropylene woofer give smoother highs than a basic coaxial
  • Sold as a pair with grilles, wire and screws included
  • Rated 4.9 out of 5 from 39 ratings
  • Runs off a factory head unit, aftermarket unit or multichannel amp
Cons
  • Bass is modest; some buyers say factory speakers had more low end
  • No published sensitivity or mounting depth figures

What separates them

BIO-6-5-COX 6.5" Coaxial Car Speakers, PairJBL Stage2 624
Nominal size6.5 inches, stated consistentlyListed as 5.25 in, conflicting with the 6.5-inch class name
Power handling100W RMS / 200W max per pair (50W RMS per speaker)35W RMS, 210W max
SensitivityNot published91 dB
TweeterSilk-dome tweeter with polypropylene wooferBasic 2-way coaxial, no driver materials published
Mounting depthNot published2-1/16 in top-mount
ImpedanceSingle 4-ohm voice coil4 ohm
Water resistanceNot ratedNot waterproof
In the box

Price history

  • BIO-6-5-COX 6.5" Coaxial Car Speakers, Pair: lowest $68.58 on Oct 28.
  • JBL Stage2 624: lowest $91.99 on Oct 28.

Specs compared

SpecBIO-6-5-COX 6.5" Coaxial Car Speakers, PairJBL Stage2 624
Mounting TypeCoaxial,Car MountFlush Mount
Speaker TypeCoaxialCoaxial, 2-way
Control MethodVoiceTouch
Compatible DevicesMP3 Player, Smartphone, TabletCar
Impedance4 Ohms4 ohm
Audio Output ModeStereo—
Antenna LocationCar Audio—
Subwoofer Diameter6.5 Inches—
Maximum Range10 Meters—
Speaker Size6.5 Inches—

What reviewers say

BIO-6-5-COX 6.5" Coaxial Car Speakers, Pair

Buyers rate it highly, with several calling the sound clean and clear for the money. The main complaint is weak low end, and some owners say their factory speakers had more bass.

Pros
  • Clean, clear sound
  • Good punch on mids and highs
  • Repeat CT Sounds buyers rate it highly
  • Fast delivery and solid build quality
Cons
  • Not much low-end output
  • Factory speakers handled bass better for some
  • Some hoped for stronger lows

JBL Stage2 624

Owner feedback on JBL's Stage coaxial line is generally positive on value and clarity for the money, with complaints centered on bass and durability in damp doors.

Pros

Questions and answers

Which is better for running off a stock head unit?
The JBL Stage2 624, because its 91 dB sensitivity gets more volume from the roughly 15-20W a stock radio delivers. The CT Sounds pair wants more power to show its advantage.
Which handles more amplifier power?
The CT Sounds BIO-6-5-COX. It is rated 100W RMS per pair against 35W RMS for the JBL, so it suits a small amp better.
Will the JBL Stage2 624 fit my 6.5-inch doors?
Verify before buying. The JBL listing gives a 5.25 in size and a 2-1/16 in mounting depth, which conflicts with the 6.5-inch class name. Measure your cutout and depth first.
Which has better bass?
Neither is a bass speaker. The CT Sounds pair has a polypropylene woofer but some buyers say low end is thin. The JBL has no published low-frequency figure. Plan on a subwoofer for real bass.
Is the CT Sounds pair worth it over the JBL?
Yes if you have 6.5-inch cutouts and plan to add an amp, since it takes more power and uses a silk-dome tweeter. The JBL makes more sense for a loud, simple stock-radio swap.
Do either come as a pair with hardware?
Both are sold as pairs. The CT Sounds box adds grilles, wire and screws. The JBL includes mounting hardware.

More comparisons

  • JBL Stage2 624 vs Massive Audio MM6H 6.5" MM Series Midrange 4-ohm Car Speaker 280W Peak
Needs a subwoofer for real low-end output
JBL
JBL Stage2 624

JBL Stage2 624

Choose the JBL Stage2 624 if you want a 91 dB-sensitive coaxial that plays loud off a stock head unit and you have verified the mounting size and 2-1/16-inch depth fit your doors.

Pros
  • 91 dB sensitivity means more volume from the same head unit power
  • Passive 2-way coaxial drops into a factory location
  • Mounting depth of 2-1/16 in is published, so fitment is easier to check
  • JBL is an established car audio brand with wide service support
Cons
  • 35W RMS is low; amplifier upgrades will outrun it
  • Size is listed as 5.25 in, which conflicts with the 6.5-inch naming
  • Not waterproof
  • No tweeter or cone materials published
Pair, grilles, wire and screws
Pair with mounting hardware
Woofer Diameter
6.5 Inches
—
MP3 PlayerNo—
Show all 40 specsShow fewer specs
SpecBIO-6-5-COX 6.5" Coaxial Car Speakers, PairJBL Stage2 624
Unit Count1 Count—
Compatible With Vehicle TypeCar—
Audio Driver TypeDynamic Driver—
Audio Driver Size6.5 Inches—
Speaker Maximum Output Power200 Watts—
Number Of Audio Channels2.0—
Connectivity TechnologyAuxiliary—
Sensitivity—91 dB
Vehicle produced after 2005—Inside driver's side door
Vehicle produced before 2005—Rear passenger doorjamb, glove box, center cons…
Waterproof—No
RMS Output—35W RMS
Maximum Output—210 Watt
Channels—2 way
Amplification Type—Passive
Quantity—2 speakers
Audio Highlights—Passed rigid reliability testing
Bluetooth—5.0
Connectivity Type—Auxiliary
Ports & Interfaces—Auxiliary
Vehicle Type—Car
Automobile Model—Alfa Romeo
Shallow Mount—No
Installation Type—Flush Mount
Hardware Included—Mounting hardware
Size—5.25 in
Mounting Depth—2-1/16" (Top-mount Depth)
Weight—520 g
Clear highs and vocals for the price
  • Easy drop-in fit in factory locations
  • Loud enough on stock head-unit power
  • Cons
    • Thin bass, especially in 5.25-inch size
    • Some report corrosion or failure in damp door locations
    • Tweeter can sound bright at high volume