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Audiobahn A18001DJ

2500W Single-Channel Class D Monoblock Car Amplifier

Discontinued
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Audiobahn A18001DJ Class D Monoblock Amplifier

Sonic Electronix is now carrying Audiobahn's new 2011 amplifiers. The class D series features the same attractive appearance you are used to from Audiobahn with the two included flame fan grilles. The class D series also comes equipped with dual cooling fans that keep the amps temperature at a safe operating level, a high gloss chrome plated finish to add to the eye catching appearance, and a large display voltage meter with blue illumination. A fully functional bass control remote with a blue backlight knob is also included in Audiobahn's new class D series amplifiers. These amplifiers come in either a 2500 watt or a 1500 watt configuration and are both powered by multi-stranded power supply toroids.

Power Efficiency

Audiobahn's series of mono block Class D amplifiers are designed to provide raw power to drive subwoofers. These amplifiers utilized digital switching, an effective method for increasing power from your vehicle’s electrical system. This technology gives Audiobahn’s Class D amplifiers the stability to operate impedances as low as 1 ohm and still remain cool enough to utilize smaller heat sinks and outer chassis.

Dual Cooling Fans

Audiobahn Class D amplifiers feature dual cooling fans which aid in the increase of airflow to critical components on the circuit board’s surface area. This helps maintain the amplifier’s optimum operating temperature which preserves its longevity and power output. In addition, our Class D amplifiers are designed with chassis exhaust venting and side-rail fins to help eliminate harmful heat from sensitive inner components.

Clipping Indicator

When an amplifier is operating outside of its output threshold it can produce square waves or DC current, which can be harmful to subwoofers. This is known as clipping. As a result, all Class D amplifiers from Audiobahn are made with a digital clipping indicator to ensure maximum performance out of your amplifier without sending any damaging signals to your subwoofers.

  • Monoblock Class D Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 700 watts x 1 chan.
    • 2 ohms: 1300 watts x 1 chan.
    • 1 ohm: 2500 watts x 1 chan.
  • Remote bass control with blue backlight knob
  • Large display volt meter with blue illumination
  • Variable Bass Boost: 0-18 dB
  • High gloss chrome-plated finish
  • Mono channel operation
  • Throughput RCA connections
  • Cobalt blue illumination
  • Multi-Stranded power supply toroids
  • Double-Sided glass epoxy circuit board
  • Dual cooling fans to keep amp functioning for extended periods of time
  • Chrome flame fan grilles for enhance appearance
  • 4-way Protection Circuitry: Thermal, Short Circuit, Overload and DC Offset
  • Heavy duty aluminum alloy heatsink for extreme heat dissipation
  • Nickel-Plated RCA level inputs
  • Nickel-Plated block terminals
  • Input Sensitivity: 200mV-8V
  • Variable Low-Pass Filter (50-250 Hz, 18 dB/octave)
  • Subsonic Filter (20-50 Hz)
  • Variable Phase Control: 0-180°
  • Frequency Response: 10-200 Hz
  • THD: 0.05%
  • Signal-To-Noise Ratio: >100 dB
  • Variable Bass Boost Frequency: 40-100 Hz
  • Dimensions: 16-7/8"L x 11-15/16"W x 2-1/2"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.
  • 1-year Manufacturer's warranty

Product History:

Audiobahn A18001DJ thumbnail
(newest, current model)
Audiobahn A18001DT thumbnail
(previous model, replaced by Audiobahn A18001DJ)

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.
700 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.
1300 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.
2500 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.
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.

D
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.

2500 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.
0.05%
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)
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
Subsonic Filter
Allows you to block (filter) ultra-low frequencies that your subs cannot reproduce.
20 - 50 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.
>100 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 - 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.
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).
Yes
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
30A x 5 
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.

No
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
100%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
5.0
Value
5.0
Features
5.0
Design
5.0
Usability
5.0
P-Dub

VA. Beach, VA

Overall
Durability
Value
Features
Design
Usability
Best Bang for Your Buck !!

July 19, 2012

I was a bit skeptical about the claim of 2500 RMS watts with 4 gauge Power & Neg. inputs and 5X30 fuses. I bench clamped it, started @ 13.9volts and it dropped down to @ 11.8 volts @ 1-Ohm load, it put-out 2348 RMS watts before climping. Pretty strong beasty amp. I like how it looks to be built to last. 2-cooling fans & voltage, climping meters. Very power efficient too. I only had 1-XLS power 5100 supplying power to it.

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Product Summary

Manufacturer

Model Number

A18001DJ

UPC

651718015598

Weight

18.00lbs

Internal SKU

a18001dj

Internal Product ID

33629

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: Audiobahn A18001DJ