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MB Quart REF1.800 (REF 1.800)

800W RMS Reference Series Monoblock Amplifier

Discontinued
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This item has been discontinued

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  • 800W RMS Reference Series Monoblock Amplifier
  • RMS Power Rating:
    • 4 ohms: 300 watts x 1 chan.
    • 2 ohms: 650 watts x 1 chan.
    • 1 ohms: 800 watts x 1 chan.
  • Pulse Width Modulated MOSFET power supply
  • Wired remote bass level control included
  • LED power (blue) and protect (red) indicators
  • Variable Bass Boost (0 to +12 dB bass boost at 45 Hz)
  • Soft Start Turn-on
  • Mono 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-5V
  • Variable low-pass filter (40-150 Hz, 24 dB/octave)
  • Subsonic filter (15-55 Hz)
  • Damping factor: >200
  • Frequency response: 15-250 Hz
  • Dimensions: 12-3/16"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

Power Specifications - Subwoofer Channel

RMS Power @ 4 ohms
The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
300 watts x 1 channels
RMS Power @ 2 ohms
The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 2 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
650 watts x 1 channels
RMS Power @ 1 ohm
The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 1 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
800 watts x 1 channels
Peak Power Output
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage. Often times this maximum is achieved during a brief musical burst, such as a drum accent or low bass hit. Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. This is the peak power output for the amplifier's 5th channel.
Not Specified

Amplifier Specifications

Amplifier Series
This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
1 - Mono
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

800 watts
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
4 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
1 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Not Bridgeable
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
<0.1%
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
No
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
1 pair
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Low-pass (LP)
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

40 - 150 Hz
Subsonic Filter
Allows you to block (filter) ultra-low frequencies that your subs cannot reproduce.
15 - 55 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
95 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 12 dB
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Yes
Fan Cooled
A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).
No
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
40A x 2 
CEA-2006 Compliant
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

Yes
Strappable
Some amplifiers can be "strapped" together in order to increase the output of a single audio channel. These amplifiers feature RCA preamp outputs, allowing you to pass the signal directly from one amp to the other to ensure consistency.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
78%
4 Star
11%
3 Star
11%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.2
Value
4.6
Features
4.6
Design
4.4
Usability
4.4

Danielle

Glendale, AZ

Overall
Durability
Value
Features
Design
Usability

Not good if you go off roading

July 31, 2013

It was working great when I first got my system set up in my jeep. I ordered it back in February, and there were no problems what so ever. It wasn't until after I had gone off roading once or twice when it started to act differently. At first the bass would work like normal then it would randomly shut off. After testing both my sub and amp to find the problem, we found out that it was the amp because a part had broke inside. Overall it was a nice amp for the price but if you ever plan to go off roading, don't get it.

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John

Primghar, IA

Overall
Durability
Value
Features
Design
Usability

Great power in a small footprint.

April 11, 2013

I have this hooked up to 2 15" Kicker L7's running 1 ohm and they pound. I am very surprised at how small this amp is and it is definitely pushing the 800 watts RMS that it says it does. The side covers really complete the look of the amp and the bass knob is really nice. Overall, I would say this is one of the best amps for the money.

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Sweet

Marrero, LA

Overall
Durability
Value
Features
Design
Usability

Works Great

February 18, 2013

Got this amp pushing two JL 10w0v3 at 2 ohm. pushes them very well and i have them in seperate sealed boxes gives that nice tight bass.

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Jeff

Petaluma, California

Overall
Durability
Value
Features
Design
Usability

Own 2

February 14, 2013

For the longest time I had my one reference i paid $*** for, just ran at .5 ohms pushing my 4 12's and i needed a second 130 amp alternator to keep up, after I strapped a second amp I blew one of my subs and needed to upgrade to something that can take the current these amps flow through them. Would recommend best bang for the buck, PERIOD. Solid and reliable good cooling and took abuse tho I wouldn't recommend running below 1 ohm impedance like I did, now I've got a nice 2 ohm load and I'm getting my 1600 watts it seems to be less demanding @ 2 ohms..

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Stephen

Santa Clarita, CA

Overall
Durability
Value
Features
Design
Usability

very satisfied customer

August 6, 2011

I got this to go with the ref. 480.4 its like a match made in heaven. solid bass great punch and clean sound. They really do complement each other. If you love sound and you have quality speakers, don't hesitate on these amps, get a set to power your speakers. you will not be disappointed. I have this on two 10's at 2 ohm load. Very goog vibes all around.

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Beamer

Baton Rouge, LA

Overall
Durability
Value
Features
Design
Usability

Great Amp

May 7, 2011

first of all coming from a sony amp this thing is nice, the bass from my sealed subs is so tight, can really feel the kick from the drums and the bass guitar in my rock and, its really small and has the flexibility to be ran with two of the same amps for 1600 watts at 2ohm. Overall really good sound. Dont know how long it will last because i just got it but still havnt had any amp crap out on me, just stolen.

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Mark

Baton Rouge, LA

Overall
Durability
Value
Features
Design
Usability

Awesome

April 26, 2011

This MB Quart monoblock is a great value. Just take a look at the suggested retail price. MB Quart is a higher caliber product with an unbeliviable amount of R&D incorporated into their products, ultimately making MB Quart superior. Just for example, the RMS ratings on this amp (REF 1.800) is a CEA compliant rating. Although Sonic offers this amp at an ubelivable price, don't be fooled by competitors. Fosgate, MTX, and other leading namebrands saw their heyday in the late 80's and early 90's, but MB Quart has been a consitent top performer. Many retailers stopped carrying the MB Quart products in their storefronts due to the inability to move the product due to pricing. The pricing on MB Quart products were higher due to the simple fact that MB Quart is a superior product. Bottom line: You get what you pay for; There is no such thing as a free lunch. Currently I am running this amp on 2 JL W3v3-4 subs at 2 ohms feeding 650 CEA compliant watts to them.

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jstkilntim

Jacksonville, FL

Overall
Durability
Value
Features
Design
Usability

Awesome Amp

April 15, 2011

At the recommendation of a friend, I bought this amp for a temporary setup pushing a JL Audio CP212-W0v2 Slot-Ported BassWedge. Since you can hook 2 of them together & get 1600watts @ 2 ohm, I will more than likely keep when I upgrade the subs later. Not sure of the durability yet, but it seems well built, looks great & does not get hot. I love it.

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Pearldiver

San Antonio, Texas

Overall
Durability
Value
Features
Design
Usability

MB Quart REF 1.800 amp, so far so good!

March 27, 2011

I purchased this amp as a replacement for a failed Phoenix Gold amp. My other gear was 90's era, mostly PG. This amplifier has controls on both sides, my other one had all the controls on one side, thus I had to rejigger some of the wires and such. When the amp arrived (quite quickly, I might add) it was double boxed and in perfect shape. Once I accounted for different mounting holes and plugged the old ones, the install was quick and painless. I mounted it in the vertical plane, one not specifically recommended by the maker. That was the way my PG gear was set up, with finned sink. No matter, it runs very cool, with no thermal or voltage issues. In any case, I can set up a fan if need be. It is currently running two MB Quart 4ohm.10' 's for a pretty easy to drive load. It is a Class D monoblock...very efficient and logical for this type of setup. I think that the PG class A or A/B that I was using had a higher sq, but getting their new owners to repair it was like trying to get a goldfish to ride a bicycle. And very costly. Sound is very good, though I might need some fine tuning help in the future. My set up uses an eqxover with its own subsonic filter, thus the one on the amp is redundant. And set to its lowest level. I cannot switch off the eqx's xovr, or the one on the amp. I have not quite resolved that one yet. Unless I run a separate rca to the 1.8 and bypass the eqxovr. But that would also bypass the eq. Not good. I would rather use my EQX's xovr, as it is set at 90hz. The 1.8's is variable. Bottom line, lots of value, and flexibility. But some of the points built in to address limitations of older gear may make it challenging to integrate with older gear. It feels very solid, and weighs in at a hair over 9.5 lbs. I am sure that you could put together a very solid system if you started out fresh with all amplification from MBQ. Especially if you used one of the multichannel products. Connections that are plated are silver or chromed. If you use the provided end caps, you wont see those. As a monoblock, you will not have options such as stereo, this is a dedicated subwoofer amp. It has dual speaker terminals, that are internally connected. So one sub, l+r the the speak, l+r to the amp. Two subs, l+r the the speaks, l+r to the two two sets of terminals on the amp. A slightly simpler hookup than back in the bridged mono days. And two speaker wires instead of one. If you are using a woofer setup with more than two speaks, you are on your own.:) A wired remote sub output control is included, many other makers charge extra for that. Overall I am pretty satisfied, the cons are pretty minor, and these days, most amps are similar in layout, power, ground, remote and speaker leads on one side, filters, gain, boost, rca ins, remote, master/slave on the other. For this one. If your are debating this one, and are sitting on the fence, maybe this will help you to decide. Cheers! Pros: Good looks, and the orange "chicklet" that lights up when the amp is on is nice, especially at night. Lots of solid power and headroom. No turn on or off thumps. If you need it, you can link two of these together. If you do that, I sense the purchase of a new alternator in your near future. If you need it the onboard xovr is a good thing to have. Same for the subsonic filter. Wired remote output control. Cons: The end caps are lightweight and kind of cheezy feeling. However once in place they integrate well. In my case, my rca's have 90 degree angled ends, and I could not use them. If you are using regular rca's no problem there. But it looks ok without them. Equalizer and subsonic filters, while adjustable, are not bypassable. If you use the highest quality 4ga. wire, or at least if it has thin insulation, be prepared to cut off a few strands of wire so the exposed wire will fit in the power connection.

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Product Summary

Manufacturer

Model Number

REF1.800

UPC

806576217251

Weight

9.52lbs

Internal SKU

ref1800

Internal Product ID

25536

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: MB Quart REF1.800 (REF 1.800)