About the Alpine SPR-50C
Exceptional performance, even at high volume
Like it loud? Alpine designed their Type-R speakers for people who like to turn it up. They'll deliver big, dynamic sound with plenty of bass, and they'll handle lots of volume. They'll work great with your car stereo, but they really come into their own when you power them with an outboard amp.
Fine-tuned for clarity and balance
The Type-R SPR-50C component system features 5-1/4" woofers with multi-layer hybrid fiber cones that deliver really strong bass response. Alpine's adapted the specially ridged surround, originally developed for their subs, to these speakers, so you get consistent, extended cone movement that pushes a lot of air. The silk tweeters produce smooth highs that bring out your music's detail and depth with no shrillness. Alpine mounts an EQ ring in front of the tweeters to help disperse the highs for a larger listening "sweet spot" in your ride. The tweeters mount separately so you can focus the sound better for your seating position.
Smaller, stronger neodymium magnets
Alpine uses powerful neodymium magnets which are much smaller than traditional magnets, so the SPR-50C's high-density polymer frames will fit into more places than most 5-1/4" woofers. External 2-way crossover networks control the high and low frequencies for seamless, clear sound — and they're 60% smaller than the old Type-R crossovers so they're easier to install. Type-R speakers have earned their reputation in the past as the masters of "crank it to the max," but Alpine has really kicked the performance factor of the latest models up a notch or two.
Installation note: You'll need a pair of our universal backstraps to install the tweeters in the factory locations.
Priced per pair
Product highlights:
- system includes two 5-1/4" woofers, 2 tweeters, and 2 crossovers
- multi-layer hybrid fiber woofer cone
- High Amplitude Multi Roll (HAMR) Santoprene® rubber surround
- 1" silk dome tweeter
- external 2-way crossovers with 4-level tweeter adjustment
- power range: 8-100 watts RMS (300 watts peak power)
- frequency response: 70-29,000 Hz
- sensitivity: 87 dB
- top-mount depth: 2-1/4"
- grilles included
- warranty: 1 year
- Our 60-day money-back guarantee
- MFR # SPR-50C
What's in the box:
- 2 Woofers
- 2 Woofer grilles
- 2 Grille badges
- 2 Tweeters (each has an attached 29" length of wire)
- 2 Tweeter grilles (installed)
- 2 Swivel flush mount housings (with tweeters installed)
- Two crossovers (each has attached 32" input and 12" output wires)
- 2 Flush mount retention rings
- 2 Stealth brackets
- 2 Foam self-adhesive pads
- 2 Foam self-adhesive rings
- Eight 1-1/8" Self-tapping screws
- 8 Speed-clips
- Four 5" Zip ties
- 2 Pieces of two-sided tape
- Warranty information
- Important Notice sheet
- Template and specs on box
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More details on the Alpine SPR-50C
Features & specs
| General | ||
|---|---|---|
| Speaker Size | 5 1/4 | |
| Design | 2-way | |
| Tweeter Design | 1" Dome | |
| Impedance (Ohms) | 4 | |
| Tweeter Composition | Silk | |
| Woofer Composition | Multi-Layer Hybrid Fiber | |
| Woofer Surround | Santoprene Rubber | |
| Parts Warranty | 1 Year | |
| Labor Warranty | 1 Year | |
| Specifications | ||
| Sensitivity (1W at 1 meter) | 87 | |
| Sensitivity at 2.83 volts | N/A | |
| Frequency Response | 70 - 29k Hz | |
| Minimum RMS Wattage | 8 | |
| Maximum RMS Wattage | 100 | |
| Peak Power Handling (Watts) | 300 | |
| Top-mount Depth (Inches) | 2 1/4 | |
| Bottom-mount Depth (Inches) | N/A | |
| Cutout Diameter or Length (inches) | 4 5/8 | |
| Mounting Height (Inches) | 0.375 | |
Product Research
Features
Woofers: The Alpine Type-R series component speakers feature multi-layered hybrid fiber woofer cones; for durability and superior linearity, they use rubber surrounds.
HAMR Surround: Type-R speakers use Alpine's multi roll HAMR surround (patent pending), a technology developed for Alpine subwoofers that maintains control and stability at higher volume levels. HAMR surround combines increased cone area and long linear cone excursion for deep, powerful bass response.
Motor Structure: The woofer's High-performance Linear Drive Motor structure features a square-wire voice coil with a large 30mm diameter, driven by a small but powerful neodymium magnet. This design provides linear motion over a wide cone excursion.
Neodymium Magnet: The neodymium magnet on the Type-R series woofers allows smaller speaker dimensions, making them easier to install in a wide variety of vehicles. They are also lighter than designs using standard magnet technology.
HD Polymer Frame: The new Type-R woofers use a revolutionary HD Polymer frame, making the speaker stronger, lighter, and easier to install.
Tweeters: The SPR-50C includes 1" (25mm) silk dome tweeters. Alpine's EQ Ring improves the tweeter's dispersion characteristics, providing excellent off-axis response. When using the flush-mount housing you can also tilt the tweeters up to 15° to focus the sound toward your ears.
Tweeter Mounting Options: The tweeters come installed in a swiveling flush-mount housing. You can also install the tweeters behind factory grilles using the included stealth mount brackets. The stealth mount brackets can be top or bottom mounted. The installed tweeter dimensions are:
| Flush Mount (swivel) | Factory Location (bottom mount) | Factory Location (top mount) | |
| Mounting Depth | 0.67" | 0.965" | 0" |
| Mounting Height | 0.43" | 0" | 0.8" |
| Cutout Diameter | 2.007" | N/A | N/A |
| Frame Diameter | 2.275" | 1.7" x 2.8" | 1.7" x 2.8" |
Crossovers: The SPR-50C features low-pass crossovers attached to each woofer's input terminal and separate high-pass crossovers in-line between the woofers and tweeters. Because the crossovers are separate, the system can be bi-amped. Two-sided tape is included to mount the high-pass crossovers and their dimensions are:
- Width: 2.65"
- Height: 0.97"
- Depth: 1.27"
Tweeter Attenuation: Each crossover has four tweeter level options, allowing you to precisely tune the high frequencies to the car interior and tweeter placement. Using the supplied jumpers select 0dB (no attenuation), -2dB, -4dB, or -6dB.
The Alpine SPR-50C replaces these items
- 5-1/4" copolymer woofers
- 3/4" Kortec tweeters
- 2-65 watts RMS power range
- 5-1/4" hybrid layered-pulp woofers with rubber surrounds
- 1" textile ring-dome tweeters
- 8-100 watts RMS power range
- 5-1/4" hybrid glass fiber woofer with Natural Butyl Rubber Multi-Roll surround
- 1-1/4" ring-radiator tweeter
- power range: 8-80 watts RMS (240 watts peak power)
- 5-1/4" aluminum woofer with hi-roll rubber surround
- 1" ring dome tweeter
- 2-60 watts RMS power range
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Customer Q&A
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I have been very satisfied with the speakers. They are paid with an alpine amp 110 rms. the sound great and never seem like they are working hard. Very satisfied as I got the second pair half off from Crutchfield special
Jeremy from Midland, TX