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MB Quart Q4.80

480W RMS Q Series 4-Channel Amplifier

MB Quart
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Q Series 4-Channel Amplifier • 80W x 4 Chan @ 4 Ohm • 120W x 4 Chan @ 2 Ohm • PWM MOSFET Power Supply • Full Feature Crossover Design • Clipping Control with LED Indicator • Frequency Multiplier • Multi-Channel Configuration • Built-In System Diagnostics

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This item has been discontinued

NVX - Worth the Envy - Direct to Consumer Car Audio

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Product Highlights


Q Series 4-Channel Amplifier • 80W x 4 Chan @ 4 Ohm • 120W x 4 Chan @ 2 Ohm • PWM MOSFET Power Supply • Full Feature Crossover Design • Clipping Control with LED Indicator • Frequency Multiplier • Multi-Channel Configuration • Built-In System Diagnostics

Description


MB Quart brand icon

Authorized dealer

  • Q Series 4-Channel Class AB Car Amplifier
  • RMS Power Rating:
    • 4 ohm: 80 watts x 4 chan.
    • 2 ohm: 120 watts x 4 chan.
    • Bridged, 4 ohm: 240 watts x 2 chan.
  • Max power output: 960 watts
  • High Speed MOSFET Output Devices
  • LED power (green) and protect (red) indicators
  • Variable Bass Boost (0 to +12 dB bass boost from selectable frequency range 30-80 Hz)
  • Soft Start Turn-on
  • 4/3/2 channel operation
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-Way System Protection circuitry (thermal, overload, and speaker short protection)
  • Top Mount Control
  • Variable Low Pass, and High Pass for specific tuning adjustments
  • Full Feature Crossover Design
  • Clipping Control with Pre-Clip, Soft Clip and Full Clip Visual Indicators
  • Built-in System Diagnostics
  • Double Sided PCB Design
  • High-density split-dome convection heat sink for high amounts of heat dissipation
  • Plated RCA level inputs
  • Input sensitivity:
    • Low level: 0.2V-9V
  • Channels 1 & 2 high-pass filter (20-45,000 Hz)
  • Channels 3 & 4 high-pass filter (15-1000 Hz)
  • Variable low-pass filter (40-45,000 Hz)
  • Damping factor: >280
  • Frequency response: 15-45,000 Hz
  • CEA-2006 compliant amplifier
  • Dimensions: 15-9/16"L x 9-1/8"W x 2"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

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Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
80 watts x 4 channel
RMS Power @ 2 ohms
120 watts x 4 channel
Bridged RMS Power
240 watts x 2 channel
Amplifier Specifications
Amplifier Class
A/B
Number of Channels
4-Channel
Total Peak Power Output
960 watts
Total RMS Power Output
480 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
No
Preamp Outputs
2 pairs
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
20 - 45,000 Hz
Low-Pass Crossover Frequency
40 - 45,000 Hz
Signal-to-Noise Ratio
90 dB
Channel Separation
80 dB
Bass Boost
0 - 12 dB
Remote bass/level controller
No
Fuse Rating
80A x 1 
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

Q4.80

Weight:

11.50lbs

Internal SKU:

q480

Internal Product ID:

29976

Product and How-to Videos


Customer Ratings & Reviews


MB Quart Q4.80 thumbnail image

5 star
67%
4 star
33%
3 star
0%
2 star
0%
1 star
0%



Durability
4
Value
5
Features
5
Design
4.4
Usability
4.4

Customer Reviews

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Not bad

Not bad but the amp gets warmer then I would like after 30 minutes of playing. It was only on a 4 ohm load with gain at 12 o'clock position. I've done around 15 custom installs in my cars over the years. Everything from 6 12's to 2 15's from components to coaxials. I know what I'm doing so it's not any fault of mine.

PROS: good price, good sound quality, good power, good cross over options, adjustments on top easy to get to, looks nice, not to big, lots of ohm and setup options

CONS: gets kinda hot even in well ventilated arounds, fans recommended, would be nice to get 2 Allen wrenches since the cover over the cross over controls take a smaller size then the one used to remover the end caps (comes with Allen for end caps), would have liked Allen wrench holes instead of philips for wire screw downs

Overall: good amp for the money, gets hotter then I like (never went into protection) but hot enough it's uncomfortable to hold your hand on the heat sink for more then 10 seconds, other then the heat issue which never affected performance just person preference I would recommend this to others. If you can afford to get the Q150.4 do it. It's worth it a little larger but gets warm at best at the same levels and play time of the Q80.4, both amps sound great. Hope this helps with you decision.

By Neal on August 23, 2011

6 found this helpful


unaltered sound

This amp pushes my 2 sets of mtx component speakers. It made them sound more natural than the other amps ive tried. It makes the midbass come out very nice and natural, and never gets harsh highs even at high volumes. It does use up quite a bit of power so make sure you use high quality 4 ga wire and rcas to get the best out of this top quality amp. The only downside is the acrylic top which flexes when hot and the knobs on top are funky to adjust so make sure to have a small screwdriver. and a 2.5 mm allen to remove the cover. other than that it is the cleanest and best quality amp i have used at the price. even an amp around 500 would maybe sound as good.

By Andrew on April 21, 2011

5 found this helpful


Wow. Kinda in shock here...

Bought this to run an active front stage (Usher 8836a 7" woofers and Vifa NE-19VTC tweets) in my wife's 04 Miata. For the price, I didn't expect much, but wow! First off, the noise floor with this amp is VERY low. Absolutely NO hiss/hum/static or noise of any kind (might just be my mad install skills, though...haha). Also, no annoying turn-on pops here; very nice. The power seems to be there, too; drives those 8-ohm Ushers with authority. Controls are easy to use and seem to work well. Got a little warm after 2 hours of driving it hard, but then again I have it installed vertically behind the pass seat (terrible for cooling), so It'd probably stay pretty cool in any "normal" install. Overall, I'm shocked at the value here. I didn't expect anywhere near this much from an inexpensive Maxxsonics amp.

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