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** FINAL CLOSEOUT ** MA Audio M1889I

Monoblock Amplifier

Discontinued
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This item has been discontinued

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LIMITED TIME SPECIAL! WAS $199.99!
  • 800 Watt RMS Mono-Block High Performance Amplifier
  • Variable High/Low Pass Cross-Over 50 - 250 Hz
  • Variable Bass Boost 0-18dB @ 45Hz
  • 3-Way Protection Circuitry
  • 2 Ohm Stereo Stable
  • High/Low Level Inputs
  • Low Level Output
  • Full MOSFET Circuitry
  • 400 Watts x 1 chan. RMS @ 4 Ohm
  • 800 Watts x 1 chan. RMS @ 2 Ohm
  • Dimensions: 2" H x 10.75" W x 11.5" L
  • 2-Year Manufacturer's warranty

Power Specifications - Full Range Channels

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 speakers or subwoofers 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.

400 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 speakers or subwoofers 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.

800 watts x 1 channels

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.
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.
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.
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.

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.
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

AB
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 Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.

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.
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 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.
.05%
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.
Yes
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)
High-pass (HP)
High-Pass Crossover Frequency
The high-pass crossover frequency can be a fixed crossover point or a variable crossover range. A variable high-pass crossover allows you to select a specific crossover point which allows frequencies above the set crossover point to pass, while making frequencies below 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.

50 - 250 Hz
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.

50 - 250 Hz
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 - 18 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.
No
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.
25A 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.

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
Not warranted
Labor Warranty Duration
Not warranted
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
68%
4 Star
24%
3 Star
8%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.7
Value
4.8
Features
4.0
Design
4.8
Usability
4.8
LT500

Turtle Lake, WI.

Overall
Durability
Value
Features
Design
Usability
Works really good

May 6, 2009

I think this amp is great. I have it going to my 12" kicker L7. I have had to turn my gain down and pretty much all the setings because the speaker started to smell like speaker smoke. So I love this amp for the money. No problems so far beside's I may need to get another speaker.

0 of 0 found this helpful

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Alfredo

Eagle Pass, TX

Overall
Durability
Value
Features
Design
Usability
Amp Review

September 19, 2008

This amp has held up for almost a year now and its been a great value. MA audio is good for rock/country but not so much for hip hop/rap.

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Rebecca

West Bloomfield, MI

Overall
Durability
Value
Features
Design
Usability
Great Amp 4 the $

November 8, 2007

i agree with the part about the amp bump when the car turns on but other then that this is a great amp i have it pushing a 10" Kenwood sub. the sub is rated for 1000 watts but this amp does the trick. This amp has great bass.

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Lowell

Dolgeville, NY

Overall
Durability
Value
Features
Design
Usability
nice

November 8, 2007

This amp is verry nice. For the price you cant beat it. MUST BUY @ this price

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Joshua

Olympia , WA

Overall
Durability
Value
Features
Design
Usability
Fits under the seat....

October 12, 2007

And it didn't take up a whole lot of real estate in my wallet. I have this pushing one 300w 4ohm sub right now and even with the gain turned to half it's still a little too much. I put an amp in my old car that was pushing exactly what that sub needed and when the sub popped I was limited as to what I could replace it with. This amp has some range so if I blow these subs up (and I'm sure I will) I'll have a much wider selection of subs to look at.

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Daniel

Ozark, MO

Overall
Durability
Value
Features
Design
Usability
Works Great and is very loud

August 8, 2007

I got this amp after my visonik blew up (dont get me started but if u want the story read my review on it) this is a way better amp it is much better built and it hits harder. even though it say's it makes less power. only thing wrong with it is it makes a bump when it is turnd on (no big deal to me) other that that it is a great amp 4 the money. ;-)

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Angela

Livonia, MI

Overall
Durability
Value
Features
Design
Usability
Great pice of work

August 8, 2007

I have this amp pushing a 18inch Mach 5 Audio singal 4ohm and it sounds amazing. Came in on time and was in great shape.

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John

Holly Springs, NC

Overall
Durability
Value
Features
Design
Usability
Rocking my Ram1500

July 27, 2007

I purchased this amp to run in 2 ohms pushing 2 Panasonic CJ-SW3003 12" subs in a sealed custom box. They can handle 700 watts rms ea. This amp rocks these subs so hard!!!! I am so amazed at the output this little amp has. I have seen it priced at other domains for 129, 189, and even 299. You can't beat this price, quality, or output period!!!

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kenneth

hamlet, NC

Overall
Durability
Value
Features
Design
Usability

July 13, 2007

this amp is so nice on my 2 12s kiker CVRS i couldnt ask for anything else must buy!!!

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Michael

Hugo, OK

Overall
Durability
Value
Features
Design
Usability
Big bass for small bucks.

July 13, 2007

I'm currently running 2 MA amps, this 689i and an 1889i on my subs. This amp is absolutely getting the job done and puts out plenty of clean usable power. I've heard mention of these amps running to hot etc, but if you know how to set gains properly this is not an issue whatsoever. Mine is BARELY warm to the touch at all, even when running it at extremely high volumes for extented periods of time. It's all about tuning your amps properly folks ;) . This is a quality unit I wouldn't heitate to recommend to anyone and for the price it's an absolute no brainer.

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Melvin

Las Vegas, NV

Overall
Durability
Value
Features
Design
Usability
Great amp

July 12, 2007

This amp is great, I purchased two of them... One is running a ported box with 2 12" subs parrallel (2ohms) and the other is running 2 12" sealed (4 ohms). since their was no fan cooling I made a small slope to give the vents unde the amp more air flow.

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James

Blackfoot, ID

Overall
Durability
Value
Features
Design
Usability
Nice Amp for the price...

July 12, 2007

I have this amp running 2 4 ohm 12's wired in series for a 2 ohm load and they really bump. The amp is more than enough for the subs.

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Andrew

Columbus, OH

Overall
Durability
Value
Features
Design
Usability
great

July 12, 2007

great amp. i have 2 running 2 rockford fostgate punch 12 and it hits hard i cant even tell you how much i love these amps great buy

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Chris

Santa Clarita, CA

Overall
Durability
Value
Features
Design
Usability
Amp puts out lots of power

June 29, 2007

This is a great amp for the money, put out lots of clean power. Only down fall, does not have soft turn on and the amp over heats running into two ohms

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Jonathan

lodi, CA

Overall
Durability
Value
Features
Design
Usability
excellent amp

March 13, 2007

this is a great amp. its a great price, excellent performance, and it looks good. the only complaint i have is that it doesn't have any extra features (eg. soft start turn on) but other than that, its a great investment. this amp goes great with just about any system. i would recommend it to anyone.

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Matt

Boonville, NY

Overall
Durability
Value
Features
Design
Usability

March 3, 2007

I bought this amp and put it on a 12' infinity, and it bumps like crazy. For the price its a great amp.

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wesley

hoover, AL

Overall
Durability
Value
Features
Design
Usability

February 27, 2007

I ordered this amp and its a GREAT amp for the price. I have it on two 12" MA120Q's and it pushes them well but they can take a lot more then its putting out.

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Lamont

oak harbor , WA

Overall
Durability
Value
Features
Design
Usability
Good amp

February 26, 2007

I purchased this amp off of one of my friends last year to push my JL W0 12". After I hooked it up i was very happy with the SQ and how loud and deep my bass was and I have a 99 Chyrsler Concorde which is a pretty big car. I wanted to test the amps potential so I bought two more W0 12" for a total of four 12" and let me tell, when i showed people what was pushing my subs, they couldnt believe it from the sounds of things.

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Roger

Waterbury, CT

Overall
Durability
Value
Features
Design
Usability
hits just as hard

December 14, 2006

this thing hits just as hard as my bd1000 and it cost's a hll of alot less i perfer this one because it it smaller in size

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John

Reno, NV

Overall
Durability
Value
Features
Design
Usability
Excellent Sub Amplifier

November 1, 2006

I have a SoundSplinter RL_p 12" subwoofer, have tried this sub in the same box with a Kicker 1000 watt amp, and I can't really tell a difference in excursion, loudness, etc. I have this amp wired at 2 ohms, so it's putting out 800 watts to the one sub. It does get kind of hot by the touch after about 5-10 minutes of playing, full blast, but other than that, VERY good amplifier for the money. I am quite satisfied with it.

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Accessory Tools and Products

Accessories added

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

Your Price $59.99

Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

Get all you need including wire cutters to upgrade your power and ground wire.

Your Price $151.99

Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

Your Price $39.99

Small Universal Remote Level Bass Control

The Scosche RLC is a smaller universal bass remote that connects via RCA inputs.

Your Price $11.99

StreetWires FB4

4 AWG / 4 Gauge Firewall Bushing

Your Price $6.95

NVX XDBU4 - Top of the Line!

Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs

Your Price $17.99

NVX XIX25 X-Series RCA Interconnect Cable

16.4 ft. of 4-Channel X-Series RCA Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $18.99

NVX XWS1225 12 AWG Speaker Wire

25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $39.99

Belva BBSW167 16 AWG Speaker Wire

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $12.99

Scosche SPL Meter SPL1000F

Handheld boomSTICK measures your SPL range from 60 to 135 dB

Your Price $21.99

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Product Summary

Manufacturer

Model Number

M1889I

UPC

784620017494

Weight

8.00lbs

Internal SKU

m1889i

Internal Product ID

2680

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: ** FINAL CLOSEOUT ** MA Audio M1889I