Alpine SPS-M601

6.5" 2-way Marine Speaker Pair General Features

• 6-1/2" 2-way marine speakers (pair)
• Poly-Mica woofer with rubber surround
• 7/8" titanium/PEI balanced-dome tweeter
• Silver UV-resistant grilles and high-temperature ABS custom frames
• Power range: 2-35 watts RMS (110 watts peak power)
• Frequency response: 60-22,000 Hz
• Sensitivity: 89 dB
• IPx5 Water Resistant Design
• Salt/Fog and UV Tested

Kicker 40KMMTES

4" Mini Tower Enclosure Pair Mounting powerful 4-inch KICKER speakers for external listening in marine and powersport applications just got easier with KICKER's durable and weather-proof KM-Series Tower-Speaker Empty Enclosures.
(Two enclosures per carton) Options
Includes acoustic poly-fill for clearest sound, all mounting hardware, and fits tubing sizes 7/8", 1", 1-1/8", 1-1/4" round or 1" square. Bold
With its bold cosmetics, the black high gloss KM enclosures with contrasting accent details complement KICKER's 4-inch coaxial marine speakers. Aim to Please
Designed with a 360-degree axis rotation in either direction, allowing the speaker cans to be aimed in the most desirable location to deliver maximum sound quality.

KMMTES Specifications

Speaker Fitting
4" Speakers
Materials
Tough ABS, weather-proof
Aiming
Nine-degree axis rotation in either direction for aiming maximum sound quality
Fits Mounting Tube Sizes
7/8", 1", 1-1/8", 1-1/4" round or 1" square
Connectors
Via wiring harness
Includes
Mounting hardware and polyfill

JL Audio 98408

MX500/4 500 Watt 4 Channel Class D Full-Range Amplifier

Overview

4-Channel Class D Full-Range Amplifier, 125 W x 4 @ 2 Ω / 90 W x 4 @ 4 Ω - 14.4V Engineered specifically for powersports applications, the 4-channel MX500/4 amplifier employs our high-speed NexD™ switching design to deliver plenty of clean power, without straining charging systems. Its tiny, cast aluminum chassis is highly resistant to corrosion, with an IPX6 water-resistance rating, making it perfect for motorcycles, ATV’s or other utility vehicles.
Generating a solid 90W x 4 into 4 ohms (14.4V, 1% THD), the MX500/4 is fully bridgeable, so it can be used as a 3-channel amplifier, or as a 2-channel amplifier producing a potent 180W x 2 into 4 ohms.
Other features include independent front and rear crossovers with selectable full-range, high-pass or low-pass filter controls and a dual-range input section that accepts a wide range of input voltage levels, from line-level all the way to high-power speaker level signals.
This amplifier features a black powder-coated finish, a gasketed cover for the controls and stainless steel hardware for durability. Rated Continuous (RMS) Power @ 14.4 V

• @ 4 Ω 70 W RMS x 4
• @ 2 Ω 125 W RMS x 4
• Bridged @ 4Ω 250 W RMS x 2

Rated Continuous (RMS) Power @ 12.5 V

• @ 4 Ω 55 W RMS x 4
• @ 2 Ω 90 W RMS x 4
• Bridged @ 4Ω 180 W RMS x 2

General Specifications

• Frequency Response 20 Hz - 20 kHz (+0, -1dB)
• S/N Ratio, referred to highest rated power >88 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
• S/N Ratio, referred to 1 W >70.5 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
• Damping Factor @ 4 Ω >92 / 50 Hz
• Damping Factor @ 2 Ω >43 / 50 Hz
• THD+N @ Rated Power <1% @ 2 Ω per Ch.
• Input Voltage Range @ RCA Inputs Switchable from 250 mV - 4 V RMS (Low) to 750 mV - 15 V RMS (High)
• Min.Copper Power / Ground Wire Gauge 4 AWG wire
• Fuse Rating 50 A (AFS, AGU or MaxiFuse™)

Signal Processing

• Filter Mode(s): Low-Pass or High-Pass
• Filter Slope(s): 12 dB/octave
• Filter Frequency Range: 35 Hz - 300 Hz
• Detented, Calibrated Filter Freq. Potentiometers: Yes
• Filter Defeat Function :Yes
• Remote Level Control: No
• Remote Level Modes: N/A
• Channel Input Mode Switch: Yes (2/3/4 ch.)
• Pass-Through Preamp Output: None
• Source Channel Selection for PreOuts: N/A

Physical Specifications

• Height (H) 1.77 in / 45 mm
• Width (W) 9.33 in / 237 mm
• Depth (D) 4.50 in / 115 mm

Technology

NexD™ Switching Technology

Summary:
NexD™ amplifier technologies produce exceptional audio quality, unsurpassed total efficiency and high power from very compact amplifier designs. Detailed Information:
Beginning with the original 'Slash' subwoofer amplifiers, JL Audio has been at the forefront of Class D amplifier design. Today, our flagship Single-Cycle Control™ technology sets the ultimate standard for Class D amplifier performance. The NexD™ amplifiers may be a bit less complex, more compact and more affordable, but they flow from the same minds that have set the trend in mobile amplifier technology for over a decade.
Let's get a little nerdy... A traditional PWM switching amp design uses a fixed switching frequency and varies the pulse width based solely on the audio input signal to the pulse modulator. This basic approach assumes some ideal conditions, like a rock-steady power supply, that do not necessarily occur in a real, in-car installation. Power supply sag with signal causes distortion at all power levels with these designs, even well below clipping. The cure for this is feedback (a corrective signal sent back to the input side), but this becomes impractical as the audio frequency increases, making it a good solution for band-limited (subwoofer) amps, but not for full-range amplifiers.
Taking the above into account when designing the NexD™ subwoofer amplifiers, we have taken the simple fixed PWM approach and enhanced it with a very high switching frequency: 240 kHz, which is about 4x higher than most Class D subwoofer amplifiers. This pushes the amplifier's bandwidth to at least 500 Hz with minimal distortion and improves efficiency, while keeping typically bulky circuity more compact. Your subwoofers will reward you with tight, rock-solid bass performance. For the full-range NexD™ amplifiers and channels we applied a variable, ultra-high speed version of the NexD™ technology (switching at well over 400 kHz). In these designs, a self-oscillating modulator with "feed-forward" sends information about the instantaneous power supply voltage to the modulator, combining this with the input signal to cancel out any distortion due to supply voltage fluctuation. This reduces distortion prior to applying feedback, simplifying the overall feedback loop design.
The bottom line is simply great audio: clean, powerful and reliable.

Differential-Balanced Inputs

Summary:
JL Audio’s Differential-Balanced Inputs are engineered to combat induced cable noise, which is a common problem in car and marine audio installations. This technology allows for the use of conventional RCA cables, while delivering many of the benefits of a true balanced connection and accepting a wide range of input signal levels.
Detailed Information:
Today’s vehicles are equipped with sophisticated electronics capable of generating noise and interference that can intrude into the audio path, ruining the listening experience.
Most audio equipment uses single-ended, ground-referenced RCA jacks to receive audio signals. This means that the RCA shield is connected directly to signal ground. This is a simple, cost effective input design that works well for short runs in noise free environments. In noisier environments, this method cannot reject the common mode noise that could be on both RCA conductors (shield and center conductor).
By having more than one chassis-grounded RCA shield on a device, single-ended input designs are also more susceptible to ground loops. If noise is present on both conductors while the shield is connected to ground, the input amplifier will amplify the noise relative to the grounded RCA shield. When there are multiple RCA connections or any other conductors subjected to a magnetic field, this will cause a difference in potential across the RCA loop to be amplified at the grounded RCA as noise (a classic ground loop).
JL Audio’s Differential-Balanced Input circuits measure the center pin of the RCA connection relative to the RCA shield, even when the shield is not connected to ground, and even when the voltages at both conductors are moving relative to ground. Because both the center conductor and the shield see high impedance to ground at the input, a ground loop cannot be formed, as there is no current flow to induce a voltage as noise. This works equally well with differential-balanced, or unbalanced signal sources, making this input architecture compatible with all standard car and marine audio equipment, using standard, unshielded, twisted-pair RCA cables. No special cables are required, unlike the fully balanced connections used in professional audio.
Another benefit of the Differential-Balanced Input design is that it easily accepts low-level and high-level signals from a variety of factory head unit outputs and amplifiers, including single ended “ground referenced” sources, as well as Balanced or Unbalanced “Bridged or BTL” sources. This eliminates the need for Line Output Converters (LOCs) in most installation scenarios.
The obvious question is: “Why don’t all car audio amplifiers use Differential-Balanced Inputs" ” The answer is simple: it costs more. Executing a proper differential-balanced input section requires more components and better quality components than a basic single-ended design, so you generally won’t find them on less expensive amplifiers.

Heise HE-CL2

3" LED Cube Light with 4-3w Cree XB-D Series LEDs Surface mount and flush mount LED cubes give you tons of options for just about every application you need. 3 inch 4 LED Cube Light Specifications

• Input Voltage: 10-30V DC
• Power Consumption: 12W
• (4-3W CREE LEDs)
• Lumen Flux: 1280lm
• Color Temperature: 6000K
• Beam Pattern: 90° Flood

Construction

• Housing Material: Die-cast Aluminum Housing
• Housing Color: Black
• Lens Material: PC
• Mounting Hardware: Stainless Steel
• Electronics: Integrated-Epoxy Encapsulated
• Hardware: Stainless 316

Operation

• Operating Temperature: -40°C to +60°C
• IP Rating: IP67
• Protections: Reverse Polarity

Infinity 622MW 450W 6.5" 2-Way Water Resistant Coaxial Marine Speakers

Great for compatible vehicles and boats, the Infinity Reference 2-way marine speakers (pair) feature 6.5-Inch woofers and dome tweeter that deliver rich, dynamic sound. These speakers guard against damage with their water- and splash-resistant design UV-treated grill and basket for lasting use.

Features and benefits:

Suitable for marine and automotive use water- and splash-resistant design UV-resistant composite grill and basket 225-watt peak power handling (8 ohms) 6.5-Inch polypropylene woofer cones with butyl surrounds balanced PEI dome tweeters ferrite magnets Signal-to-Noise ratio offers a 92-decible sensitivity 2.5-Inch mounting depth installation Parts Included Specifications: peak power handling (w): 225 Signal-to-Noise ratio (db): 92 magnet: ferrite

What's in the box:

Infinity reference 2-way marine speakers (pair) installation Parts owner's manual

Kenwood PKG-MR3321BT Marine Receiver and Speaker Package

Package Includes:

• One - Kenwood KMR-M332BT Receiver
• Two - Kenwood KFC-1613MRW 6.5" Speakers

Kenwood KMR-M332BT Marine/Powersports/Car Receiver with Bluetooth

Equipped with the Intuitive KENWOOD Music Mix
Up to 5 Bluetooth® devices can be connected to the receiver at the same time, allowing you to take turns streaming music with your friends and family. Dual Phone Connection
While you are connected through Bluetooth, with a touch of a button you can switch between two phones. Control the Receiver from Your Smartphone with the KENWOOD Remote App
A smartphone application can control most basic functions of the receiver over the Bluetooth connection of the paired phone (iPhone or Android). Streaming Music
Listen to popular music applications and music stored on your device with basic audio controls. Designed for Ease of Use
Direct Bluetooth keys allow you to access quickly to answering to and making a call, and entering Bluetooth Audio source. Front USB and AUX Input Compatible with a Variety of USB-Enabled Devices
Easy front panel connection for your compatible USB- enabled devices. These include Mass Storage Class devices like iPods, smartphones, and USB flash drives. The USB input will allow you to charge and control the music playback of your select devices. 13-Band EQ / Digital Time Alignment
13-Band equalizer and DTA gives optimal tuning enhancements for the listener. Playable USB Files
Compatible with a broad range of audio file formats from FLAC and WAV, to MP3, WMA and AAC. Music Codecs
FLAC Playable up to ～96kHz / ～24bit
WAV Playable up to ～44.1kHz / ～16bit
MP3 Playable up to ～48kHz / ～320kbps
WMA Playable up to ～48kHz / ～192kbps
AAC Playable up to ～48kHz / ～320kbps Digital Time Alignment
Sound coming from a variety of speakers located within your car are time aligned to arrive at your ear at exactly the same time. Drive Equalizer
Drive EQ boosts specific frequencies in the audio signal to compensate the negative impact of road noise. System EXPANSION Ready
The KENWOOD receiver has RCA outputs to expand the system to connect to an additional amplifier or powered subwoofer. Variable Color Display
Bright variable color LED's can be adjusted to match your environment. Short Chassis Design
With audio receivers shorter in depth, installation is made easier in a wider range of cars. Conformal Coating
Improved moisture resistance of the circuit boards to prevent corrosion. SiriusXM Radio Ready
Access additional music, sports and entertainment content on the go with SiriusXM Radio.
(Optional SiriusXM tuner required, sold separately) Spanish and French Text Display
On-screen display menu now available in Spanish and French. Wired Remote Control (Optional)
Remote control and remote extension cables are optionally available. Specifications FM
Frequency Range(MHz): 87.9MHz to 107.9MHz
(Frequency step): (200kHz)
Usable Sensitivity: 8.2dBf
S/N:30dB: (0.71μV/75Ω)
Quieting Sensitivity: 17.2dBf
DIN S/N:46dB: (2.0μV/75Ω)
Frequency Response(±3.0dB): 30Hz to 15kHz
S/N(dB): 64.0dB(MONO)
Stereo Separation: 40dB(1kHz) MW (AM)
Frequency Range(kHz): 530kHz to 1700kHz
(Frequency step): (10kHz)
Usable Sensitivity: 29dBμ (28.2μV)
Preout Level(mV)/Load -Unbalanced: 4000mV/10kΩ
Preout Impedance(Ω): =<600Ω
Speaker Impedance(Ω): 4 to 8Ω USB
I/F: USB: USB 1.1 / 2.0 High Speed
File System: FAT12 / 16 / 32
Maximum Supply current: DC5V(DC logo) 1.5A
Frequency Response: 20Hz to 20kHz(±1dB)
S/N Ratio (dB): 98dB(1kHz)
Dynamic Range: 93dB
Channel Separation: 91dB
MP3 Decode: Compliant with MPEG-1/2 Audio Layer-3
WMA Decode: Compliant with Windows Media Audio
AAC Decode: AAC-LC ".aac",".m4a" files
WAV Decode: Linear-PCM
FLAC Decode: FLAC file (Up to 24bit/96kHz) AUX
Input: Frequency Response: 20Hz to 20kHz ±3dB
Input Maximum Voltage: 1000mV
Input Impedance: 30kΩ AMP
PWR(MAX): 50Wx4
Full Bandwidth Power
(at less than 1%THD): 22Wx4 TONE
Band1: 62.5Hz ±9dB
Band2: 100Hz ±9dB
Band3: 160Hz ±9dB
Band4: 250Hz ±9dB
Band5: 400Hz ±9dB
Band6: 630Hz ±9dB
Band7: 1kHz ±9dB
Band8: 1.6kHz ±9dB
Band9: 2.5kHz ±9dB
Band10: 4kHz ±9dB
Band11: 6.3kHz ±9dB
Band12: 10kHz ±9dB
Band13: 16kHz ±9dB Bluetooth
Version: Bluetooth 4.2
Frequency Range: 2.402 to 2.480GHz
RF Output Power (E.I.R.P.): +4dBm (MAX), Power Class 2
Maximum Communication range: Line of sight approx.10m(32.8ft) Profile
HFP 1.7.1 (Hands Free Profile)
SPP(Serial Port Profile)
PBAP(Phonebook Access Profile)
A2DP(Advanced Audio Distribution Profile)
AVRCP 1.6.1 (Audio/Video Remote Control Profile) GENE
Operating voltage: 12V DC car battery
Installation Size (W x H x D): 7 3/16" x 2 1/16" x 3 15/16"
Net Weight: 1.5 lbs.
(Trim plate and Mounting sleeve: Included)

Kenwood KFC-1613MRW 6.5" Marine/Powersports Speakers - White

KFC-1613MRW 6-1/2" Marine/Motorsports 2-Way Speakers

• 6-1/2" 2-Way Speakers
• Peak Input Power : 100W
• Rated Input Power: 30W
• Waterproof Polypropylene Cone
• Balanced Dome Tweeter
• UV Resistant Grille

General Features

• Peak Input Power: 100W
• Rated Input Power: 30W
• Impedance: 4Ω
• Woofer Features: 6-1/2 inch Water Resistant PP Cone
• Tweeter Features: Water Resistant Balanced Dome
• Sensitivity: 87 dB/ W / m
• Frequency Response: 60Hz-20kHz
• Cutout Diameter: 5 inch; 127mm
• Mounting Depth: 2-5/16 inch; 58mm

Stinger SMRAUXUSB

Marine and Off Road USB Aux

JL Audio MBT-CRXv2 Bluetooth® Audio Controller / Receiver

Kicker 47PSMB34 PSM Motorcycle/Powersports Weatherproof Speaker Pods - Black

PSM Mini-Enclosed Speakers enhance your music on vehicles with handlebars but no fairing (shipped as a pair). Resistant & Efficient
The PSM Mini Enclosed Speakers are built for excellent sound on your ATV or motorcycle handlebars, mounting using its single-point, cast-aluminum clamp. These weather-proof speakers come in durable chrome or glossy black enclosures, complete with handlebar mounting hardware. Add a PXA amplifier for a complete system, meant for rough roads and rougher trails. PSM Speakers work best with 15-50 watts of recommended power. See below for more details. Specifications

• Woofer (in, mm): 3, 75
• Recommended Amplifier Power (watts RMS): 50
• Peak Power (watts, per ANSI/CTA-2031-A): 100
• Frequency Response (Hz): 100-15k
• Sensitivity (dB, 1W/1m): 85
• Nominal Impedance (Ohm): 4
• Weight (oz, g): 20, 570
• Dimensions (in, mm): 4-3/4 H x 3-3/8 W x 3-7/8 D, 120 H x 86 W x 98 D
• Fits Handlebar Sizes, (in, mm): 1-1/4, 1, 7/8 (32, 25, 22)

Brandmotion SUTV-2020 SummitVi

JL Audio 98407

MX500/1 Monoblock Class D Full-Range Amplifier, 500 W Engineered specifically for powersports applications, the MX500/1 monoblock amplifier employs our high-speed NexD™ switching design to pack a serious full-range punch, without straining charging systems. Its tiny, cast aluminum chassis is highly resistant to corrosion, with an IPX6 water-resistance rating, making it perfect for motorcycles, ATV’s or other utility vehicles.
With a robust 500W of clean power into a 2-ohm load (14.4V, 1% THD), use one to drive a subwoofer, or grab a pair to deliver stunning output to a subwoofer system or full-range satellites. The MX500/1 also features an adjustable low-pass crossover, a bass boost EQ, variable infrasonic filter and output polarity switch.
Its dual-range input section accepts a wide range of input voltage levels, from line-level all the way to high-power speaker level signals. With the addition of an M-RBC-1 remote level control (sold separately), subwoofer output can be directly controlled from the driver’s seat.
This amplifier features a black powder-coated finish, a gasketed cover for the controls and stainless steel hardware for durability.

Specifications

Rated Continuous (RMS) Power @ 14.4 V

• @ 4 Ω 300 W RMS x 1
• @ 3 Ω 400 W RMS x 1
• @ 2 Ω 500 W RMS x 1
• @ 1.5 Ω N/A

Rated Continuous (RMS) Power @ 12.5 V

• @ 4 Ω 250 W RMS x 1
• @ 3 Ω 300 W RMS x 1
• @ 2 Ω 400 W RMS x 1
• @ 1.5 Ω N/A

General Specifications

• Frequency Response 20 Hz - 12 kHz (+0, -1dB)
• S/N Ratio, referred to highest rated power >97 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
• S/N Ratio, referred to 1 W >70 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
• Damping Factor @ 4 Ω >115 / 50 Hz
• Damping Factor @ 2 Ω >54 / 50 Hz
• THD+N @ Rated Power <1% @ 2 Ω
• Input Voltage Range @ RCA Inputs Switchable from 250 mV - 4 V RMS (Low) to 750 mV - 15 V RMS (High)
• Min.Copper Power / Ground Wire Gauge 4 AWG wire
• Fuse Rating 50 A (AFS, AGU or MaxiFuse™)

Signal Processing

• Filter Mode(s): Low-Pass only
• Filter Slope(s): 24 dB/octave
• Filter Frequency Range: 40 Hz - 400 Hz
• Detented, Calibrated Filter Freq. Potentiometer: Yes
• Filter Defeat Function: Yes
• Infrasonic Filter: 20 Hz - 40 Hz, variable
• Bass Boost: EQ 0 to +12 dB @ 43 Hz
• Output Polarity Switch: Yes
• Remote Subwoofer Level Control: Optional (M-RBC-1)
• Remote Bass EQ Boost Control: No
• Pass-Through Preamp Output: None

Physical Specifications

• Height (H) 1.77 in / 45 mm
• Width (W) 9.33 in / 237 mm
• Depth (D) 4.50 in / 115 mm

Technology

NexD™ Switching Technology Summary:
NexD™ amplifier technologies produce exceptional audio quality, unsurpassed total efficiency and high power from very compact amplifier designs.
Detailed Information:
Beginning with the original 'Slash' subwoofer amplifiers, JL Audio has been at the forefront of Class D amplifier design. Today, our flagship Single-Cycle Control™ technology sets the ultimate standard for Class D amplifier performance. The NexD™ amplifiers may be a bit less complex, more compact and more affordable, but they flow from the same minds that have set the trend in mobile amplifier technology for over a decade.
Let's get a little nerdy... A traditional PWM switching amp design uses a fixed switching frequency and varies the pulse width based solely on the audio input signal to the pulse modulator. This basic approach assumes some ideal conditions, like a rock-steady power supply, that do not necessarily occur in a real, in-car installation. Power supply sag with signal causes distortion at all power levels with these designs, even well below clipping. The cure for this is feedback (a corrective signal sent back to the input side), but this becomes impractical as the audio frequency increases, making it a good solution for band-limited (subwoofer) amps, but not for full-range amplifiers.
Taking the above into account when designing the NexD™ subwoofer amplifiers, we have taken the simple fixed PWM approach and enhanced it with a very high switching frequency: 240 kHz, which is about 4x higher than most Class D subwoofer amplifiers. This pushes the amplifier's bandwidth to at least 500 Hz with minimal distortion and improves efficiency, while keeping typically bulky circuity more compact. Your subwoofers will reward you with tight, rock-solid bass performance. For the full-range NexD™ amplifiers and channels we applied a variable, ultra-high speed version of the NexD™ technology (switching at well over 400 kHz). In these designs, a self-oscillating modulator with "feed-forward" sends information about the instantaneous power supply voltage to the modulator, combining this with the input signal to cancel out any distortion due to supply voltage fluctuation. This reduces distortion prior to applying feedback, simplifying the overall feedback loop design.
The bottom line is simply great audio: clean, powerful and reliable. Differential-Balanced Inputs Summary:
JL Audio’s Differential-Balanced Inputs are engineered to combat induced cable noise, which is a common problem in car and marine audio installations. This technology allows for the use of conventional RCA cables, while delivering many of the benefits of a true balanced connection and accepting a wide range of input signal levels. Detailed Information:
Today’s vehicles are equipped with sophisticated electronics capable of generating noise and interference that can intrude into the audio path, ruining the listening experience.
Most audio equipment uses single-ended, ground-referenced RCA jacks to receive audio signals. This means that the RCA shield is connected directly to signal ground. This is a simple, cost effective input design that works well for short runs in noise free environments. In noisier environments, this method cannot reject the common mode noise that could be on both RCA conductors (shield and center conductor).
By having more than one chassis-grounded RCA shield on a device, single-ended input designs are also more susceptible to ground loops. If noise is present on both conductors while the shield is connected to ground, the input amplifier will amplify the noise relative to the grounded RCA shield. When there are multiple RCA connections or any other conductors subjected to a magnetic field, this will cause a difference in potential across the RCA loop to be amplified at the grounded RCA as noise (a classic ground loop).
JL Audio’s Differential-Balanced Input circuits measure the center pin of the RCA connection relative to the RCA shield, even when the shield is not connected to ground, and even when the voltages at both conductors are moving relative to ground. Because both the center conductor and the shield see high impedance to ground at the input, a ground loop cannot be formed, as there is no current flow to induce a voltage as noise. This works equally well with differential-balanced, or unbalanced signal sources, making this input architecture compatible with all standard car and marine audio equipment, using standard, unshielded, twisted-pair RCA cables. No special cables are required, unlike the fully balanced connections used in professional audio.
Another benefit of the Differential-Balanced Input design is that it easily accepts low-level and high-level signals from a variety of factory head unit outputs and amplifiers, including single ended “ground referenced” sources, as well as Balanced or Unbalanced “Bridged or BTL” sources. This eliminates the need for Line Output Converters (LOCs) in most installation scenarios.
The obvious question is: “Why don’t all car audio amplifiers use Differential-Balanced Inputs" ” The answer is simple: it costs more. Executing a proper differential-balanced input section requires more components and better quality components than a basic single-ended design, so you generally won’t find them on less expensive amplifiers.

Kenwood KAC-M5024BT Compact 4-Channel Marine/Powersports Amplifier

KEY FEATURES

• IP67/IP66 Certified Waterproof & Dustproof
• RMS 50W x4 (4Ω)
• RMS 75W x4 (2Ω)
• 7 Selectable EQ Presets
• Wired Remote Control Included
• Built-in Bluetooth with aptX
• RCA Line Output Terminals for System Expansion
• Dims - (W)7-13/16” x (H)1-15/16” x (D)4-1/8”

WaterPROOF & DustPROOF
IPX7/IPX6/IP6X certified. The amplifier can be submerged in up to 3.3 feet of water for 30 minutes, and can resist high-pressure, heavy sprays of water. Salt Spray PROOF
ASTM B117 salt spray (or salt fog) corrosion testing ensures the amplifier will not corrode or fail in saltwater and other harsh environments. Vibration PROOF
Thick 1/4" die-cast frame suppresses vibration. Equipped with the Intuitive KENWOOD Music Mix
Up to 5 Bluetooth® devices can be connected to the amplifier at the same time, allowing you to take turns streaming music with your friends and family. High Quality Bluetooth Streaming
Compatible with high quality codecs such as aptX and AAC, allowing you to be entertained with superior music playback.

ULTIMATE Performance

Increased Power Flow
Metal studs enable high current flow for connections between the amplifier and battery, resulting in powerful bass reproduction and enhanced overall sound quality. High Quality Capacitors
PMLCAP's (Polymer Multi-Layer Capacitors) are utilized in the LC filter circuits to decrease distortion, ensuring clear detail for a truer to life sound. Magnetic Shielding
Magnetic shields for the output coils reduce radiated noise, further contributing to smooth and accurate sound. SMART Remote Control
The Bluetooth antenna is housed inside the remote control, effectively providing a solid and sensible range for device connectivity, ensuring you stay connected to the music. SMART Remote Control
The Bluetooth antenna is housed inside the remote control, effectively providing a solid and sensible range for device connectivity, ensuring you stay connected to the music. EASY Sound Control
With an easy to access volume knob, separated buttons with multi-controls, & LED indicators, this remote is your perfect companion. 7 Selectable EQ Presets
You can choose your favorite sound setting from 7 EQ Presets.
1:Natural, 2;Rock, 3:Pops, 4:Easy, 5:Top40, 6:Jazz, 7:Powerful System EXPANSION Ready
The KAC-M5024BT has RCA outputs to expand the system to connect to an additional amplifier or powered subwoofer. You can even control the output level from the remote control by pressing the PRE-OUT button, then turning the volume knob.

Kenwood KMR-M332BT Marine/Powersports/Car Receiver with Bluetooth

Equipped with the Intuitive KENWOOD Music Mix
Up to 5 Bluetooth® devices can be connected to the receiver at the same time, allowing you to take turns streaming music with your friends and family. Dual Phone Connection
While you are connected through Bluetooth, with a touch of a button you can switch between two phones. Control the Receiver from Your Smartphone with the KENWOOD Remote App
A smartphone application can control most basic functions of the receiver over the Bluetooth connection of the paired phone (iPhone or Android). Streaming Music
Listen to popular music applications and music stored on your device with basic audio controls. Designed for Ease of Use
Direct Bluetooth keys allow you to access quickly to answering to and making a call, and entering Bluetooth Audio source. Front USB and AUX Input Compatible with a Variety of USB-Enabled Devices
Easy front panel connection for your compatible USB- enabled devices. These include Mass Storage Class devices like iPods, smartphones, and USB flash drives. The USB input will allow you to charge and control the music playback of your select devices. 13-Band EQ / Digital Time Alignment
13-Band equalizer and DTA gives optimal tuning enhancements for the listener. Playable USB Files
Compatible with a broad range of audio file formats from FLAC and WAV, to MP3, WMA and AAC. Music Codecs
FLAC Playable up to ～96kHz / ～24bit
WAV Playable up to ～44.1kHz / ～16bit
MP3 Playable up to ～48kHz / ～320kbps
WMA Playable up to ～48kHz / ～192kbps
AAC Playable up to ～48kHz / ～320kbps Digital Time Alignment
Sound coming from a variety of speakers located within your car are time aligned to arrive at your ear at exactly the same time. Drive Equalizer
Drive EQ boosts specific frequencies in the audio signal to compensate the negative impact of road noise. System EXPANSION Ready
The KENWOOD receiver has RCA outputs to expand the system to connect to an additional amplifier or powered subwoofer. Variable Color Display
Bright variable color LED's can be adjusted to match your environment. Short Chassis Design
With audio receivers shorter in depth, installation is made easier in a wider range of cars. Conformal Coating
Improved moisture resistance of the circuit boards to prevent corrosion. SiriusXM Radio Ready
Access additional music, sports and entertainment content on the go with SiriusXM Radio.
(Optional SiriusXM tuner required, sold separately) Spanish and French Text Display
On-screen display menu now available in Spanish and French. Wired Remote Control (Optional)
Remote control and remote extension cables are optionally available. Specifications FM
Frequency Range(MHz): 87.9MHz to 107.9MHz
(Frequency step): (200kHz)
Usable Sensitivity: 8.2dBf
S/N:30dB: (0.71μV/75Ω)
Quieting Sensitivity: 17.2dBf
DIN S/N:46dB: (2.0μV/75Ω)
Frequency Response(±3.0dB): 30Hz to 15kHz
S/N(dB): 64.0dB(MONO)
Stereo Separation: 40dB(1kHz) MW (AM)
Frequency Range(kHz): 530kHz to 1700kHz
(Frequency step): (10kHz)
Usable Sensitivity: 29dBμ (28.2μV)
Preout Level(mV)/Load -Unbalanced: 4000mV/10kΩ
Preout Impedance(Ω): =<600Ω
Speaker Impedance(Ω): 4 to 8Ω USB
I/F: USB: USB 1.1 / 2.0 High Speed
File System: FAT12 / 16 / 32
Maximum Supply current: DC5V(DC logo) 1.5A
Frequency Response: 20Hz to 20kHz(±1dB)
S/N Ratio (dB): 98dB(1kHz)
Dynamic Range: 93dB
Channel Separation: 91dB
MP3 Decode: Compliant with MPEG-1/2 Audio Layer-3
WMA Decode: Compliant with Windows Media Audio
AAC Decode: AAC-LC ".aac",".m4a" files
WAV Decode: Linear-PCM
FLAC Decode: FLAC file (Up to 24bit/96kHz) AUX
Input: Frequency Response: 20Hz to 20kHz ±3dB
Input Maximum Voltage: 1000mV
Input Impedance: 30kΩ AMP
PWR(MAX): 50Wx4
Full Bandwidth Power
(at less than 1%THD): 22Wx4 TONE
Band1: 62.5Hz ±9dB
Band2: 100Hz ±9dB
Band3: 160Hz ±9dB
Band4: 250Hz ±9dB
Band5: 400Hz ±9dB
Band6: 630Hz ±9dB
Band7: 1kHz ±9dB
Band8: 1.6kHz ±9dB
Band9: 2.5kHz ±9dB
Band10: 4kHz ±9dB
Band11: 6.3kHz ±9dB
Band12: 10kHz ±9dB
Band13: 16kHz ±9dB Bluetooth
Version: Bluetooth 4.2
Frequency Range: 2.402 to 2.480GHz
RF Output Power (E.I.R.P.): +4dBm (MAX), Power Class 2
Maximum Communication range: Line of sight approx.10m(32.8ft) Profile
HFP 1.7.1 (Hands Free Profile)
SPP(Serial Port Profile)
PBAP(Phonebook Access Profile)
A2DP(Advanced Audio Distribution Profile)
AVRCP 1.6.1 (Audio/Video Remote Control Profile) GENE
Operating voltage: 12V DC car battery
Installation Size (W x H x D): 7 3/16" x 2 1/16" x 3 15/16"
Net Weight: 1.5 lbs.
(Trim plate and Mounting sleeve: Included)

Kicker 44KMTC94 9" Enclosed LED Marine Tower Speakers - Black

KICKER KMTC9 HLCD tower systems are made for incredibly smooth sound up close or at a distance - without harsh horn “glare.” Play your tunes as loud as you want, these powerful horn-loaded speakers are the new standard for marine sound quality. Sold as pairs.FORM AND FUNCTIONKMTC Tower Systems deliver great looks, total adjustability and incredible sound quality. Your tunes are loud and clear, whether you’re in the boat, at Party Cove or the end of a tow rope. Want to aim your sound? Easily rotate the speakers a full 354˚ without tools, then watch the LED’s light up the night in any one of seven colors. Don’t just be the life of the party. Be the reason for it.HIGHLIGHTS

• Four-Ohm Voice Coil
• High-Frequency Horn Design with Titanium-Dome Compression Drivers
• Stitched Polypropylene Cone With Santoprene® Surround
• UV-Resistant Polymer Basket
• Near full rotation swivel With Toolless Locking Cam/Toggle System
• Stainless Steel/ABS Clamp Fits 1.5 - 3.25-Inch Tubing
• Through-Clamp Wiring System With Mating Socket
• Single Bolt Speaker Removal System
• 316L Stainless Mounting Hardware Included
• Seven Color LED Grilles Included*
• Meets or Exceeds ASTM Standards for UV** and Salt/Fog Exposure***

*Upgradable to 20 Colors and 19 Lighting Modes with KMLC.**ASTM G154 400 hr. Accelerated UV Test***ASTM B117 200 hr. Salt Fog TestThe KMTC 9-Inch Tower System works best with 300 watts of recommended power per speaker.