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MB Quart FX4.50

400W RMS 4-Channel Formula Series Amplifier

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Formula Series 4-Channel Class A/B Car Amplifier • 50W at 4 Ohm • 100W at 2 Ohm • PWM MOSFET Power Supply • Variable High Pass Filter • Variable Low Pass Filer • Variable Bass Boost • 4 Way Protection Circuitry

Learn more about the fx450

We apologize

This item has been discontinued

NVX - Worth the Envy - Direct to Consumer Car Audio

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Product Highlights


Formula Series 4-Channel Class A/B Car Amplifier • 50W at 4 Ohm • 100W at 2 Ohm • PWM MOSFET Power Supply • Variable High Pass Filter • Variable Low Pass Filer • Variable Bass Boost • 4 Way Protection Circuitry

Description


MB Quart brand icon

Authorized dealer

MB Quart FX4.50 Features:
  • Formula Series 4-Channel Class A/B Car Amplifier
  • RMS Power Rating:
    • 4 ohm: 50 watts x 4 chan.
    • 2 ohm: 100 watts x 4 chan.
    • Bridged, 4 ohm: 200 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"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

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Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
50 watts x 4 channel
RMS Power @ 2 ohms
100 watts x 4 channel
RMS Power @ 1 ohm
Not Stable
Bridged RMS Power
200 watts x 2 channel
Amplifier Specifications
Amplifier Class
A/B
Number of Channels
4-Channel
Total Peak Power Output
Not Specified
Total RMS Power Output
400 watts
Maximum Input Gauge Size
8 AWG
Minimum Impedance Unbridged
2 ohm
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
.05%
Speaker Level Inputs
No
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
10 - 1200 Hz
Low-Pass Crossover Frequency
30 - 150 Hz
Subsonic Filter
Not Specified
Signal-to-Noise Ratio
90 dB
Channel Separation
80 dB
Bass Boost
0 - 9 dB
Remote bass/level controller
No
Fuse Rating
15A x 2 
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

FX4.50

Weight:

8.50lbs

Internal SKU:

fx450

Internal Product ID:

33003

Product and How-to Videos


Customer Ratings & Reviews


MB Quart FX4.50 thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
4.7

Customer Reviews

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I recommend this amp

Got this amp for my TUNDRA DC. It's powering 4 6-1/2" speakers at 4 ohms 50 watts each. Amp powers the speakers with no problem sound quallity is good and clear. Amp dose not clip or get hot and the price for this amp is great you can't beat it.

By miguel on May 5, 2012

4 found this helpful


MB Quart FX4.50

Great bargin amp! I'm using this amp to run a set of Boston 6.5 Comp's and an Eclipse 10. It handles everything with ease and does not heat up nor clip. I would recommend this amp to anyone on a budget that isn't in need of serious power. This amp is a great pick for modest, daily driver stereos.

By TheDavel on January 17, 2012

3 found this helpful


Great amp for the price

Have them kooked to 2 Massive audio components and 2 massive audio 2 way speakers, has good bass, and the mids and highs are smooth, so far used it for 6hrs stright and didnt get hot at all

By nukes on August 14, 2012

1 found this helpful




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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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