METRA 82-SU1 speaker adapter and wire harness kit 6.5-6.75 in car electronics accessory
- Speaker Spacers
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Alpine
Complete audio upgrade bundle with 8-channel processor amp, dual shallow 10-inch subwoofers and 6x9-inch coaxial speakers
This bundle combines an 8-channel Hi-Res digital sound processor amplifier with two shallow 10-inch preloaded subwoofer enclosures and a pair of 6x9-inch coaxial speakers. It is built for drivers who want a complete, high-resolution audio upgrade without assembling separate components. The integrated amplifier handles processing and power in one chassis. The package suits vehicles with limited installation depth.
The amplifier delivers 50W x 6 plus 300W x 2 at 2 ohms, replacing weak head-unit power and adding dedicated subwoofer channels. The jump is worth it when the factory system lacks bass authority, clarity at volume, or digital tuning control. The 300W RMS subwoofers and Hi-Res certified speakers address the gaps a stock setup cannot fill. Buyers who need more than eight channels or higher per-channel power should look elsewhere.
The amplifier measures 18.5 by 4.5 by 12.5 inches, matching the subwoofer enclosures for consistent mounting depth. Shallow 4.5-inch depth allows placement behind seats or in tight cargo areas. Adjustable mounting options on the enclosures help align the subs in irregular spaces. The PC and iPhone app handles automatic sound tuning, reducing manual DSP errors. Missing wiring kits or vehicle-specific harnesses are the most common oversights.
| Type | Subwoofers |
|---|
The amplifier measures 18.5 wide by 4.5 high by 12.5 deep, matching the subwoofer enclosure dimensions exactly.
Connect a PC or iPhone via USB, launch the Alpine app, and keep the ignition in accessory mode with the microphone positioned at the listening height; skipping the accessory-power step is the most frequent error.
Inspect the dual voice coils and neodymium magnet assembly after every 300 watts RMS of continuous use; the shallow 4.5-inch depth makes heat buildup the primary wear factor.
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