Universal-Fit Audio for 1981 BMW 528i

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• 4x6" Self-Adhesive Foam Speaker Baffle Ring Kit
• Waterproof automotive-grade high-density foam strips
• Prevents front and rear wave cancellation and panel vibrations
• Designed for use with 4x6" speakers
• Pack of 2

• Acoustically seals speakers for better sound performance
• Prevents front and rear wave cancellation
• Reduces panels vibrations
• Easy peel and stick installation

• Universal Replacement Locking Retractable Antenna
• Locking Top Mount with Key
• 48" Cable

• Foam Acoustic Speaker Baffles
• Fits 4" x 6" Speakers
• Improves Speaker Performance
• Protects Rear of Speaker Against Moisture

• Acoustically seals speakers for better sound performance
• Prevents front and rear wave cancellation
• Reduces panels vibrations
• Easy peel and stick installation

• Acoustically seals speakers for better sound performance
• Prevents front and rear wave cancellation
• Reduces panels vibrations
• Easy peel and stick installation

• 12 Volt Backup Battery System
• Powers siren when battery is disabled

• Wired Bass Remote Controller
• Compatible with select JL Audio amplifiers
• Flush-mountable installation
• Color: Black

• 8-1/4"
• Cross Flow Cooling Fan
• Keeps Components Running Cool
• Easy Installation

• Extremely durable fabric that will stand up to heavy usage
• Adhesive backing allows for an easier installation process
• Easy to cut, fit, and mold to desired shape or size
• Stain resistant
• Color: Black
• Carpet Thickness: 1/8 inch
• Perfect for subwoofer boxes, car trunk liner or for use as a dash cover

Bass Blockers • Removes Low Frequency Sounds • 0-5.6 kHz @ 4 Ohm • 0-2.8 kHz @ 8 Ohm • Black Wire Color

• Distortion Detector/Analyzer (DD1)
• Distortion Detector's Circuitry Is 100% Analog
• Distortion Detection Trigger Level > 1.0% Harmonic Distortion
• Operating Range of Input Signal is 1.2Vrms – 125Vrms. (15,000 Watts at 1 ohm) Autoranging
• Signal Present LED Trigger Voltage 750mVrms

• Invisibeam® Field Disturbance Sensor
• Generates two invisible detection fields around your vehicle
• Offers 2 response types

• 12" Loaded Dual Subwoofer Enclosure with Amplifier
• 500 watts RMS
• Class D Amplifier
• Variable Bass Boost
• Speaker-Level Inputs
• Wired Remote Bass Level Control

• 2-Way mini box system
• 3.5" long-excursion woofer
• Bluetooth Functions
• Built-in illuminating RBG lights

• PAC LD-10 Line Driver with Signal Booster
• Boost Your Signal and Gain the Most Power Out of Your System
• 10X RCA Signal Booster
• Solid State Ground Loop Isolation
• Left and Right Gain Level Adjustment

• Pair of 12-Volt Short Brass Terminal Post Adapters
• For Vehicles that Use "Short Style" Battery Posts
• High Quality M6 Threading
• Stainless Steel Hex-Head Bolts Included
• Compatible with All i-BAR Rails

• 12-Volt AGM Car Battery
• Sealed Absorbent Glass Mat (AGM) design
• Perfect for 2500W car audio stereo systems
• Compatible with many domestic, Japanese and European car models
• Also works as a secondary battery with a 4000-watt capacity

• Under seat amplifier rack for select 2018-Up Jeep models
• Corrosion resistant black powder-coated mount plate
• Designed to be installed under the front seat to install aftermarket amplifier

• 7 band-Band Graphic Equalizer
• 3 Sets of preamp outputs (front, rear and subwoofer)
• 7 volts Max preamp outputs
• Subwoofer frequency and level control
• Gold-plated RCA level inputs