Why Shop Sonic Free Shipping Free Tech Support Easy Returns Low Price Guarantee Details
Free Kicker active-style headphones with a purchase of $100+ of Kicker Gear
Print

MB Quart FX4.70

560W RMS, 4-Channel Formula Series Amplifier

—

No customer reviews yet. Be the first!

Specials with this product

  • Free Ground Shipping to the 48 statesdetails
MB Quart FX4.70 Features:
  • Formula Series 4-Channel Class A/B Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 70 watts x 4 chan.
    • 2 ohms: 140 watts x 4 chan.
    • Bridged, 4 ohms: 280 watts x 2 chan
  • PWM (Pulse Width Modulated) MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Variable Bass Boost (0 to +9 dB bass boost at 45 Hz
  • 4/3/2 Channel operation
  • Unbalanced RCA input jack
  • Preamp RCA outputs to daisy chain multiple amps
  • 4-Way System Protection circuitry (DC, thermal, overload, and speaker short protection)
  • Heavy duty aluminum alloy convection heatsink for superb heat dissipation
  • Silver-plated RCA level inputs
  • Silver-plated screw terminals
  • Input sensitivity:
    • Low level: 200mV-6V
  • Signal to noise ratio: 90dB
  • Channel separation: 80dB
  • Variable low-pass filter: 30-150 Hz
  • Variable high-pass filer: 10-1200 Hx
  • LP/HP/Full crossover switch
  • Damping factor: >180
  • Frequency response: 10-45,000 Hz
  • Dimensions: 12-3/4"L x 9-1/2"W x 2-1/4"H
  • 8-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
Power Specifications - Full Range Channels
RMS Power @ 4 ohms70 watts x 4 channels
RMS Power @ 2 ohms140 watts x 4 channels
RMS Power @ 1 ohmNot Stable
Bridged RMS Power280 watts x 2 channels
Peak Power OutputNot Specified
Amplifier Specifications
Amplifier ClassAB
Number of Channels4
Total Peak Power OutputNot Specified
Total RMS Power Output560 watts
Maximum Input Gauge Size8 AWG
Minimum Impedance Unbridged2 ohms
Minimum Impedance Bridged4 ohms
THD at Rated RMS Power.05%
Speaker Level InputsNo
Preamp OutputsNo
Built-in CrossoverLow-pass (LP)
High-pass (HP)
Full (AP)
High-Pass Crossover Frequency10 - 1200 Hz
Low-Pass Crossover Frequency30 - 150 Hz
Subsonic FilterNot Specified
Signal-to-Noise Ratio90 dB
Channel Separation80 dB
Bass Boost0 - 9 dB
Bass/Gain RemoteNo
Fan CooledNo
Fuse Rating20A x 2 
CEA-2006 CompliantNo
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderManufacturer
Nobody has rated this product yet.
Share your thoughts with others:
Write a Review
Amplifier Wiring Kits
Get the wires you need to properly install and power your car amp.
 ProductPriceAdd?
Kicker ZCK4Kicker ZCK4
Complete 4 Gauge Amp Wiring Kit with RCA Interconnect Cables and Speaker Wire!		$94.99
StreetWires ZN1K-04StreetWires ZN1K-04
4 Gauge (AWG) ZN1 Series Single Amplifier Installation Kit for Systems up to 1000 Watts		$37.99
Kicker PKD4Kicker PKD4
Dual Amplifier 4 Gauge Amp Installation Kit w/ Distribution Blocks		$119.99
Gauge Adapter
In situations where the input gauges on the amplifier is smaller than the power/ground cable gauge, one of these gauge adapters should be used. They are easy to use and enable your amplifier to to still receive all the power that it requires.
 ProductPriceAdd?
Monster Cable Gauge Reducer (4 AWG to 8 AWG)Monster Cable Gauge Reducer (4 AWG to 8 AWG)
Chrome plated gauge reducer allows 4 AWG cable to fit in 8 AWG inputs.		$6.00
Bass Remote Control
Control the volume level of your bass and amplifier from the front of the vehicle.
 ProductPriceAdd?
Universal Remote Level Bass ControlUniversal Remote Level Bass Control
Controls bass level and frequency via RCA/Interconnect connectors on any amp.		$14.99
Small Universal Remote Level Bass ControlSmall Universal Remote Level Bass Control
The Scosche RLC is a smaller universal bass remote that connects via RCA inputs.		$12.99
Speaker Wire
Improve the sound quality by delivering more power when replacing your factory wiring. High quality speaker will maximize your amplifier investment and system performance.
 ProductPriceAdd?
Kicker XW1220 Speaker WireKicker XW1220 Speaker Wire
12 Gauge Wire - 20 ft. of Dual Twist Speaker Cable with Sleeves for a Clean Install		$24.49
StreetWires SCP1215BL - 12 AWG Speaker WireStreetWires SCP1215BL - 12 AWG Speaker Wire
12 Gauge Wire - 15 ft. of Speaker Cable with Twisted Construction		$19.99
RCA Interconnects
You will need a good set of RCA interconnect cables to connect your amplifier to your head unit. Using high quality cables ensure the best sound possible by reducing unwanted noise interference, providing tight contacts, and utilizing the latest in cable technology.
 ProductPriceAdd?
Kicker 4-Channel RCA Audio Interconnect CableKicker 4-Channel RCA Audio Interconnect Cable
4 Meters (13 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted-Pair, Hyper-Flex Technology		$21.99
Kicker X-Series RCA Interconnect CableKicker X-Series RCA Interconnect Cable
19 ft. of 4-Channel X-Series RCA Cable with dual twisted-pair conductors, hyper-flex technology, and gold-plated k-cut collars for excellent signal transfer.		$44.99
StreetWires ZN9 Series Interconnect CableStreetWires ZN9 Series Interconnect Cable
16.4 ft. of 4-Channel RCA Cable with Rhodium-plated contacts and ZeroNoise construction for clear signal transfer!		$99.99
Installation, Tools & Accessories
With our professional install card, you can have your amp installed by a pro near you, or you can purchase tools and do the install yourself.
 ProductPriceAdd?
StreetWires FB4StreetWires FB4
4 AWG / 4 Gauge Firewall Bushing		$7.99
Kicker DB1448 (09DB1448) - Top of the Line!Kicker DB1448 (09DB1448) - Top of the Line!
Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs		$18.99
Professional Installation for your Car Power AmplifierProfessional Installation for your Car Power Amplifier
Covers labor charges through our professional installer network.		$89.99
Testing and Performance
Optimize your system's performance with testing tools such as SPL meters, bass test discs and more!
 ProductPriceAdd?
AutoSound 2000 CD-104AutoSound 2000 CD-104
The ultimate amplifier level setting disc used for evaluation of audio components		$12.99
AutoSound 2000 CD-102AutoSound 2000 CD-102
High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.		$12.99
AutoSound 2000 CD-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.		$12.99
Main Product
 ProductPriceAdd?
MB Quart FX4.70MB Quart FX4.70$109.95

Product Summary

Manufacturer: MB Quart
Model number: FX4.70
UPC: 806576217992
Weight: 9.00 lbs
Internal SKU: fx470
Internal product ID: 33004

Price Information

$219.99

–$110.04

$109.95

Add an Optional Extended Warranty

Add

$13.99

$

In Stock

save to wish list

Why Sonic Electronix?

Musical Mayhem Sweepstakes sponsored by MTX Audio. 3 winners, $2,300 in prizes!

Customer Testimonial

GREAT PRICES,FAST SHIPPING,BEST CUSTOMRER SERVICE,WOULDN'T BUY ANYWHERE ELSE!!

- Pedro from bakersfield,CA

See more…

Recently Viewed Items

fx470 thumbnail

6" x 9" 2-Way HF Series Coaxial Speakers

fx470 thumbnail

12" Dual 4 ohm Zeus Series Square Car Subwoofer

fx470 thumbnail

12" Dual 4 ohm Zeus Series Car Subwoofer