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JBL 521

Concert Series 5-1/4" 2-way car speakers with grilles

Item # 109CT521G

Bring on the big fun of being there live, but leave off the big price tag — that's the idea behind JBL's...

Find what Fits your car

Bring on the big fun of being there live, but leave off the big price tag — that's the idea behind JBL's...

California customers:
Please click here for your Proposition 65 warning.

Item # 109CT521G

Ships free today

In stock
$79.99 pair

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About the JBL 521

Cool speakers with grilles

Bring on the big fun of being there live, but leave off the big price tag — that's the idea behind JBL's Concert Series car speakers. Their Concert 521 5-1/4" coaxial speakers deliver a strong sound with a striking design, accented by JBL's "exclamation point" logo on the tweeter. And the speaker's patented Plus One™ structure extends the surface area of the polypropylene woofer cone to give you a better low-frequency experience. Grilles are included.

Cool speakers with grilles

Bring on the big fun of being there live, but leave off the big price tag — that's the idea behind JBL's Concert Series car speakers. Their Concert 521 5-1/4" coaxial speakers deliver a strong sound with a striking design, accented by JBL's "exclamation point" logo on the tweeter. And the speaker's patented Plus One™ structure extends the surface area of the polypropylene woofer cone to give you a better low-frequency experience. Grilles are included.

A match for any system

These 3-ohm speakers are sensitive enough that you can power them with an aftermarket stereo, but you'll get even better results feeding them power from an outboard amp.

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Product highlights:

  • 5-1/4" 2-way speakers (pair)
  • polypropylene Plus One™ woofer cone
  • dome tweeter
  • handles up to 40 watts RMS (120 watts peak power)
  • frequency response: 75-20,000 Hz
  • impedance: 3 ohms
  • sensitivity: 91 dB at 2.83V
  • top-mount depth: 1-13/16"
  • grilles included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # SPKCON521AM

What's in the box:

  • Two 2-Way speakers
  • 2 Grilles
  • 2 Grille frames
  • Eight 1" Screws
  • 8 Speed clips
  • Installation instructions
  • Template on box

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More details on the JBL 521

Pat M.

Features & specs

General
Speaker Size 5 1/4
Design 2-way
Tweeter Design Dome
Impedance (Ohms) 3
Tweeter Composition ---
Woofer Composition Polypropylene
Woofer Surround Rubber
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 91
Frequency Response 75 - 20k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 40
Peak Power Handling (Watts) 120
Top-mount Depth (Inches) 1 13/16
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 4 7/16
Mounting Height (Inches) 0.313

Product Research

Features

Plus One+ Woofer Cones: Each speaker uses a cone larger than other speakers of the same size. This is accomplished by using a unique basket design and hi-roll surround. The Plus One+ design offers greater bass output and an increase in efficiency.

High-Output Design: The 3Ω voice coil design compensates for the high in-line resistance of small gauge factory wiring, extracting more power from factory (or aftermarket) receivers. This results in clearer, richer sound for the listener.

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