Description
Autotek Street Machine SM4CX 4" 2-Way Coaxial Speakers – 250 Watts
The Autotek SM4CX 4-inch coaxial speakers are designed to deliver a massive audio upgrade in a compact, universal-fit format. Engineered as part of the Street Machine series, these speakers utilize high-quality Alpha-Cellulose poly cones to produce rich midrange and surprisingly deep mid-bass for their size. High frequencies are handled by moisture-resistant Neo Mylar soft dome tweeters, ensuring crystal-clear highs and long-term durability in automotive environments. With a high-strength Y30 ferrite magnet and an integrated passive Butterworth crossover, the SM4CX provides a smooth, balanced soundstage that far exceeds the performance of factory paper-cone speakers.
Key Features
The Autotek SM4CX 4-inch coaxial speakers are designed to deliver a massive audio upgrade in a compact, universal-fit format. Engineered as part of the Street Machine series, these speakers utilize high-quality Alpha-Cellulose poly cones to produce rich midrange and surprisingly deep mid-bass for their size. High frequencies are handled by moisture-resistant Neo Mylar soft dome tweeters, ensuring crystal-clear highs and long-term durability in automotive environments. With a high-strength Y30 ferrite magnet and an integrated passive Butterworth crossover, the SM4CX provides a smooth, balanced soundstage that far exceeds the performance of factory paper-cone speakers.
Key Features
- Alpha-Cellulose Poly Cones: Lightweight yet rigid cone material produces musical midrange and accurate tonal reproduction with high efficiency
- Neo Mylar Soft Dome Tweeters: Delivers ultra-clear high frequencies with a smooth response profile and enhanced resistance to the elements
- High-Strength Y30 Magnet: Equipped with a 5.2 oz motor structure to provide superior control and higher output with minimal distortion
- UV-Resistant Rubber Surrounds: Moisture-resistant surrounds ensure the cone remains perfectly centered while providing lasting mid-bass impact
- Thermal Management: Pure copper voice coil and Kapton former work with an over-coil cooling system to dissipate heat during high-volume playback
- Anti-Resonant Stamped Steel Basket: Heavy-duty frame construction minimizes unwanted vibrations and harmonics for a cleaner listening experience
- Integrated Crossover: Built-in passive Butterworth crossover with a 6dB slope ensures a seamless transition between frequency ranges
- Textured ABS Gasket: Provides a tight, vibration-free seal against factory OEM panels or custom mounting surfaces
- Universal Mounting: Compact design and standard mounting patterns make this an ideal replacement for most 4-inch factory locations
- Power Handling: 250 Watts Peak (125 Watts RMS) per pair
- Frequency Response: 80Hz – 20kHz
- Sensitivity: 88dB
- Mounting Depth: 2.2"
Shipping & Delivery
Free shipping applies to orders $50 and over shipped within the 48 Contiguous U.S. States. Most orders ship the same or next business day. Tracking is included and will be updated upon shipment.
Additional shipping fees are required for all other locations (including but not limited to): PO Boxes, APO/FPO address, AK, HI, PR, Guam, Canada, and other countries outside the USA
We will make every attempt to process and ship orders within 2 business days of your cleared payment. We will contact you, should there be a problem or delay with your order. Please allow proper delivery time for your package to arrive.
Orders via UPS Ground arrive within 2-6 business days. Smaller or lighter weight items typically ship via USPS First Class or USPS Priority Mail.
