ADAM Audio A3X-SUB7 BUNDLE (2.1)

$ 1,399.99 -14%
$ 1,199.97

The ADAM A3X-SUB7 BUNDLE is a 2.1, 3-way, matched SPL system with a 7" sub woofer, 4.5" woofers and X-Art ribbon tweeters.

 ADAM Audio A3X

The ADAM A3X is a desktop monitor with a 4.5" woofer, ADAM’s proprietary folded ribbon tweeter, and single-knob volume knob control of two speakers via Stereolink.

While it may be tempting to think of the ADAM A3X as a budget-conscious monitor, that’s just a side-effect of its intended purpose—a professional-quality monitor for desktop computer applications. Whether you’re making music on a laptop or just watching Netflix and chilling, the 4.5" A3X gives you brilliant audio quality thanks to ADAM’s precision X-ART tweeter and carbon fiber woofer. Together, these two drivers give the A3X a 60Hz to 50kHz frequency range, which is beyond that of many professional monitors. The compact A3X produces a bass response that appears to defy the laws of physics, along with a clean low-midrange devoid of the mud that lives between 200Hz-400Hz. The spatial detail and dimensionality are what you would expect from ADAM professional monitoring. 

ADAM Audio A3X—Just the Facts:

  • X-ART folded ribbon tweeter
  • 5" carbon fiber mid-woofer
  • 2 x 25W amplification (A/B HF/ PWM LF)
  • Front-panel on/off switch and volume gain
  • Single volume control of both speakers via Stereolink
  • Tweeter gain on the rear panel
  • 60Hz - 50kHz frequency range
  • XLR & RCA connectors
  • 106dB max peak SPL per pair
  • 5-year warranty (2-year + 3-year optional extension)

ADAM Audio A3X—Behind the Grille

X-ART folded ribbon tweeter technology

From its inception, ADAM Audio emerged as a major force to be reckoned with in pro audio monitoring, mainly due to its innovative folded ribbon tweeter. The ribbon tweeter is based on the Air Motion Transformer concept developed by Dr. Oskar Heil, which is a pleated diaphragm similar to the shape of bellows. From the standpoint of surface area response, a 1-inch-wide pleated diaphragm is comparable in function to an 8"-diameter cone. The folded driver acts like a point-source version of a larger driver, which inherently results in lower distortion during sound reproduction. Another property of the folded diaphragm is that its squeezing movement projects air with a speed approximately five times faster than the speed of the ribbon driver itself. 

ADAM engineers took this technology and improved on it, incorporating superior geometries and materials to achieve unprecedented audio fidelity. The latest iteration of the ADAM folded ribbon tweeter is the X-ART, which explores new paths in the kinematics of moving air, resulting in a dramatic improvement in the quality of audio reproduction.

The X-ART membrane consists of a pleated diaphragm in which the folds compress or expand according to the audio signal applied to them. The result is that air is drawn in and squeezed out, like the bellows of an accordion.

The ADAM X-ART design overcomes the piston-like motion of all conventional drivers and their inevitable problems, such as narrow directivity, by achieving an improvement in air loading by a factor of 4 over conventional transducers. In addition, the X-ART tweeter’s pleated membrane avoids the typical breakup/distortion and subsequent dynamic limiting at higher frequencies found in dome and cone tweeters. Another positive result of the X-ART design is that the driving “stripes” are in direct contact with the outer air and are cooled immediately.

Diaphragm area is another important factor in determining the dynamic range of a transducer. Basically, what you see is what you get. The cone area you can see is always the acoustically active area of the loudspeaker–this is true for practically all other drive units. By folding the X-ART diaphragm into the 3rd dimension (as seen from the listener’s position) a larger foil can be used, thus increasing the acoustically effective area of the diaphragm by a factor of more than 2.5 times. This results in a higher dynamic output with extremely wide dispersion.

Class A/B custom amplifier

While the X-ART tweeter’s solved certain problems associated with conical tweeter designs, its wide bandwidth up to 50kHz, though responsible for the musicality and openness of the AX3’s high-frequency response, also created a problem in terms of amplification. PWM (pulse-width modulation) amplifiers, which have become popular due to their high power efficiency and low distortion, require a low-pass filter to separate the modulation frequency (the point where power switches from the supply rails) from the audio band. It imposes a limitation on the high-frequency reproduction of the X-ART tweeter. To preserve the wide bandwidth, which in turn preserves the phase coherency and resultant realism of audio in the audible range, ADAM put considerable time and effort into creating a high-frequency power amp to allow the high-frequency tweeter to live up to its potential.

The perfect partner for X-ART

An internal bandwidth of more than 1MHz is externally limited so that the unit delivers an ultra-wide response up to 300kHz. With nothing limiting the abilities of the X-ART tweeter, the monitor has unsurpassed clarity and openness which will daze and amaze even the most jaded professional ear.

Stereolink single-knob volume control

The Stereolink (A3X and A5X only) is a feature designed specifically for desktop DAW users who don’t have external monitor control systems. Stereolink, which works only with RCA inputs (not the mono XLR), comprises an input and output jack in each monitor. Connecting to Stereolink allows you to control the volume for both monitors using the volume control of one. The volume control of the slave monitor only affects its own volume to easily compensate for differences in listening distance. Each monitor can function either as a master or a slave.

Front- and rear-panel controls

The front panel of the A3X includes an on-off switch and volume control. The rear-panel inputs include balanced XLR, unbalanced RCA input as well as RCA stereo link input and output. The rear panel also has a ±4dB tweeter level control and an IEC power receptacle plus voltage selector switch (115V/230V) for international use. 

ADAM Audio Sub7 

The ADAM Audio Sub7 is a 7", 140-watt subwoofer with 107dB peak SPL and 32-150Hz frequency range, featuring remote control of volume and crossover frequency.

Small monitors with diminutive woofers in the 4.5" and 5" range are at odds with low frequencies. It’s not their fault. They’re just obeying the laws of physics. To create the illusion of deeper bass in such speakers, there are certain tricks designers use, such as bass reflect ports. But there again, physics rears its stubborn head, in the form of port noise or reflections that can interfere in the low mids, turning them into low muds. A more elegant solution is the addition of a subwoofer. However, it would be a bit of an overkill to add a 10" or 12", 1,000-watt sub to a five-inch speaker. The ADAM Sub7 is specifically designed to complement smaller monitors, such as those found in ADAM’s A3X and A5X monitors. ADAM’s primary goal in monitor design is to provide absolute accuracy and natural sound reproduction. To achieve that goal, ADAM subwoofers combine exceptional bass power with precision and clarity. Plus there are practical features to make subwoofer integration convenient.

ADAM Audio Sub7—Just the Facts:

  • Small form-factor makes easy placement in space-challenged studios
  • 7" Subwoofer (paper)
  • Amplifier power RMS / Music, 140W / 210W
  • Frequency Response of 32Hz-150Hz
  • peak SPL 107dB
  • Remote control of crossover and volume lets you adjust without leaving the sweet spot

ADAM Audio Sub7—Behind the Grille

Small footprint big sound

The Sub7 has been designed to complement smaller monitors in the AX-Series, Its small footprint allows for easy placement in environments where real-estate is limited and at a premium. The included remote control enables volume changes or crossover frequency adjustments from your studio sweet spot or comfy sofa (if you’ve got an ADAM-equipped home theater). The Sub7 I/O includes both balanced XLR and unbalanced RCA input and output connectors, enabling the Sub7 to be used in home or studio environments.

The Sub7 has several control options allow for various adjustments to room acoustics or the satellite speakers in your system. These controls include A 0°/180° phase switch and a switchable 85Hz high-pass filter to find the best setting for an optimum in sound and performance. The low cut-off frequency of 32Hz (-3dB point) enables the Sub7 to reproduce audio in the low register in a highly authentic manner.

PWM custom amplifier

PWM (Pulse Width Modulation) also known as Class D amplification or switching amp technology (and mistakenly digital amplification), converts the incoming signal to a series of rectangular waveforms of equal height. The width of the rectangles varies in time and represents the musical signal. This waveform can be amplified much more simply, as the transistors are used as switches that only turn the power supply voltage on and off.

It is possible that a very fast mechanical switch could do the job, but power transistors are a better choice for the task, as such, PWM amplifiers work pretty much like conventional Class AB designs.

Advantages of PWM

The main advantage of PWM amplifiers is their extremely high efficiency (>90%). As a consequence the heat to be dissipated is only one-fifth of earlier designs, leading to much lower temperatures within the amps and making the use of heat sinks unnecessary.

While PWM is highly efficient, pulse-width modulation causes signal distortion due to non-linearity of the modulation based on transient response. Usually, some form of noise-shaping filter is required to eliminate the distortion. However, that alone wasn’t good enough for ADAM engineers, who set out to develop PWM units that would perform at the leading edge of sonic quality while maintaining high efficiency. The ADAM units use a proprietary technology for both the amp and the power supply section (i.e. no more transformers) combined with state-of-the-art input and filter sections to achieve the best in multi-channel active monitoring.

ADAM Sub7 features and benefits:

Linear bass reproduction down to 32Hz:

  • Ideal addition to smaller nearfield monitors

Maximum Peak sound pressure in 1 m ≥ 107dB:

  • Powerful, compression-free sound reproduction even at very high SPL

High-efficiency PWM amplifier:  

  • Low-distortion amplification at both low and high volume levels

Special 7" woofer with paper diaphragm   :

  • Unrestricted bass reproduction for low-fatigue operation

Easy manual or automatic (de-)activation (via optional footswitch)  

  • If desired, monitoring is possible without the low frequencies

Upper cut-off frequency is selectable between 50Hz to 150Hz  

  • Allows optimal adaptation of the total system on the bass performance of the satellites

Connectable high-pass filter for the satellite outputs, which blocks signals below 85Hz  

  • Dolby®—Fair reproduction of film sound; discharging the satellites from the low frequencies

Remote control (contained in the delivery contents):  

  • Comfortable control in any situation

Analog XLR and RCA inputs   :

  • Optimized for balanced and unbalanced line signals

Small footprint:  

  • Flexible positioning in room for optimal sound results

2 years warranty with optional extension to 3 years with the registration of the product  

  • Full repair service if required for 5 years


If you’re missing the lows from your ADAM AX3 monitors, the Sub7 subwoofer gives you the full frequency range. Order your A3X-Sub7 bundle today. For more information, call or chat online with your PAD Studio specialist.

A3X Specifications

  • Tweeter: X-ART
  • Velocity transform ratio: 4:1
  • Equivalent diaphragm diameter: 2" / 56 mm
  • Woofer: 4.5" / 120 mm
  • Woofer material: Carbon fiber
  • LF amplifier: 25W RMS/40W music, type A/B
  • HF amplifier: 25W RMS/40 music, type A/B
  • Input sensitivity: -∞ to +14dB
  • Tweeter gain: ±4dB
  • High shelf EQ > 5kHz: N/A
  • Low shelf EQ < 300Hz: N/A
  • Frequency response: 60Hz – 50kHz
  • THD 90dB/1m>100Hz: ≤ 0.8%
  • SPL with sine wave 100Hz-3kHz in 1m: ≥ 98dB
  • peak acoustic output in 1m per pair: ≥ 106dB
  • Crossover frequency: 2.8kHz
  • Input: XLR/RCA
  • Input impedance: 10k ohm
  • Magnetically shielded: N/A
  • Dimensions (HWD): 10" x 6" x 7-1/2" (252 x 150 x 185 mm)
  • Weight: 10.1 lb. / 4.6 kg

Sub7 Specifications

  • Driver: 178mm / 7“
  • Voice coil ø: 38 mm / 1.5“
  • Cone material: coated paper
  • power RMS / music: 140W/210W
  • Frequency response: ±3dB: 32Hz-150Hz
  • THD >60Hz: ≤1 %
  • SPL max in 1m: ≥ 107 dB
  • Crossover frequencies: 50-150Hz
  • Input connectors: XLR / RCA
  • Input impedance: 10k ohm
  • Weight: 8 kg / 17.6 lb.
  • Magnetic shielding: no
  • Height x Width x Depth: 371 x 200 x 280 mm 14.5" x 8" x 11"
  • Warranty: 5 year (2-year plus optional 3-year extended)


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