Name: MB Quart REF4.50
Brand: MB Quart
SKU: ref450
Price: 88.99 USD
Availability: Discontinued
Rating: 5.0000 (1 reviews)

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Product highlights

Reference Series 4-Channel Class A/B Car Amplifier • 400W RMS • 100W x 4-Chan @ 2 Ohm • Variable Bass Boost • Soft Start Turn-on • 4-Way System Protection Circuitry • Preamp RCA Outputs • MOSFET Power Supply

Learn more about the ref450

Product Highlights

Description

Authorized dealer

Reference 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.
Pulse Width Modulated MOSFET power supply
LED power (blue) and protect (red) indicators
Variable Bass Boost (0 to +9 dB bass boost at 45 Hz)
Soft Start Turn-on
4/3/2 channel operation
Preamp RCA outputs to daisy chain multiple amps
4-Way System Protection circuitry (DC, thermal, overload, and speaker short protection)
Heavy duty aluminum alloy heatsink for extreme heat dissipation
Nickel-plated RCA level inputs
Nickel-plated screw terminals
Input sensitivity:
- Level: 200mV-6V
Variable high-pass filter (15-250 Hz, 24 dB/octave)
Variable low-pass filter (30-250 Hz, 24 dB/octave)
Damping factor: >180
Frequency response: 15-45,000 Hz
Dimensions: 11-1/16"L x 7-3/4"W x 1-7/8"H
4-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

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 RMS Power Output

400 watts

Maximum Input Gauge Size

4 AWG

Minimum Impedance Unbridged

2 ohm

Minimum Impedance Bridged

4 ohms

THD at Rated RMS Power

<0.05%

Speaker Level Inputs

Preamp Outputs

1 pair

Built-in Crossover

Low-Pass (LP)
High-Pass (HP)

High-Pass Crossover Frequency

15 - 250 Hz

Low-Pass Crossover Frequency

30 - 250 Hz

Signal-to-Noise Ratio

>90 dB

Channel Separation

>80 dB

Bass Boost

0 - 9 dB

Remote bass/level controller

Fuse Rating

20A x 2

Warranty and Return Policy

Parts Warranty Duration

1 year

Labor Warranty Duration

1 year

Warranty Provider

Manufacturer

Customer Ratings & Reviews

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By feature average rating

Durability		5
Value		5
Features		5
Design		5
Usability		5

Customer Reviews

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Yet to Install

This is my first amplifier buy off sonicelectronix.com, shipping was fast and product came in perfect condition. This this looks and feels great, feels solid and not cheap.

Notes:
-Power terminals will accept wire up to 5mm in diameter, I measured myself and that is an accurate measurement.
-Width with end caps: 11"
-Width without end caps : 9"

I'm going to rate 5 stars for now, because the only complaint I have, which is not even a big deal, but is that the gain/level/hpf/lpf/bass boost adjusters aren't flush with the side of the amp but instead are recessed about 2mm, I'll write another review of this amp after I install it and use it for a bit.

By Jeremy on February 16, 2013

12 found this helpful

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Add-ons

Belva BAK44

Complete 4-Channel CCA 4 Gauge Amp Kit with RCA Cables and Speaker Wire

(61)

$49.99

List price $79.99

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MB Quart REF4.50

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This item has been discontinued

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