The sonic specialists at Alpine optimize their SPS-510 5-1/4" speakers for great range and impressive tone definition, even at low power levels. You can connect these versatile Type-S Series speakers to your factory stereo for an immediate sonic improvement, or hook them up to a powerful aftermarket stereo or amp for increased performance. Mineral-fortified polypropylene cones are exceptionally stiff, yet lightweight, which means they can push out accurate upper bass and deliver clear midrange. Resilient rubber surrounds help keep the woofer centered for accurate cone movement, reducing distortion. Silk dome tweeters provide warm high notes that bring out the character of the instruments and vocals. Grilles are not included factory grilles are appropriate for most installations.

General Features:

• Peak: 340 watts per pair / 170 each.
• RMS: 110 watts per pair / 55 each.
• Large diameter voice coil (30mm diameter).
• Poly-mica cone woofer.
• Rubber surround.
• 3/4" Silk dome tweeter.
• Optimized air-flow design.
• Yoke shaped reduces magnetic leakage.
• Cone structure with strong mica results in faster energy transfer & clarity.
• Rigid & strong VC structure contributes to clear sound with high efficiency.
• Tightly packed square wire structure puts more turns in the gap and adds strength.
• Aramid reinforced TIL bobbin holds wire very rigid.
• Square VC wire + strong magnet = High efficiency with low distortion.
• Stamped steel basket frame.
• Affordable premium quality upgrade to your factory audio system.
• Great power-efficient speakers.
• 4 ohms impedance.
• Square-wire short voice coil.
• Low distortion strontium magnet.
• Sensitivity: 87dB (1W/1m)
• Top-mount depth: 2"
• Cutout diameter: 4-1/2"