ADAM Audio A77X 3-Way Active Studio Monitor Speaker Overview:

The A77X is a horizontally designed monitor that combines all of the technical innovations in the AX-Series. Due to its powerful, compression-free sound reproduction and excellent radiation characteristics, it is suitable both for nearfield and midfield monitoring.

The special feature of the A77X is its 2 1⁄2-way system. Both 7” woofers start to work together at 38 Hz and at 400 Hz one woofer fades out and only the second woofer continues to operate in the midrange up to 3 kHz. This prevents interferences and possible phase cancellation in the critical midrange. Even though frequency transitions and potential distortions lie outside these areas, the human ear is particularly sensitive to midrange frequencies.

Especially noteworthy in the A77X is the extremely wide stereo foundation and brilliant stereo imaging. Treble and mids are reproduced with three-dimensional realism and the lows are, as expected from a double woofer design, massive without compromising on precision.

• German Handmade Precision X-ART Tweeter
• 2 x 7“ Woofer (Carbon/Rohacell/Glass fiber)
• Amp. Power RMS / Music: 250 W / 375 W
• Frequency Response: 38 Hz - 50 kHz
• Max. SPL per pair at 1 m: ≥122 dB

Features:

• X-ART tweeter
• 2 x 7” carbon/rohacell/glass fiber-midwoofer
• 50W/2 x 100W amplification
• On-/off-switch and volume gain on the front panel
• Tweeter gain and 2 shelf filters on the rear panel
• 38Hz - 50kHz
• XLR & RCA connectors
• 122 dB max peak SPL per pair 

Specifications:
WOOFER

• Number: 2
• Basket Ø: 7" (175 mm)
• Voice Coil Ø: 1.5" (38 mm)
• Cone Material: Carbon/Rohacell/Glass Fiber

TWEETER

• Number: 1
• Type: X-ART
• Diaphragm Area: 4 inch² (2420 mm²)
• Equiv. Diaphragm Ø: 2" (56 mm)
• Velocity Transform Ratio: 4:1
• Diaphragm Weight: 0.17 g

BUILT-IN AMPLIFIERS

• Woofer: 1
• Type: PWM
• Amp. Power RMS / Music: 100 W / 150 W
• Subwoofer: 1
• Type: PWM
• Amp. Power RMS / Music: 100 W / 150 W
• Tweeter: 1
• Type: A/B
• Amp. power RMS / music: 50 W / 75 W

CONTROL PANEL

• Input Sensitivity: -∞ to +14 dB
• High Shelf EQ > 5 kHz: ±6 dB
• Low Shelf EQ < 300 Hz: ±6 dB
• Tweeter Gain: ±4 dB

INPUT CONNECTORS

• Analog: XLR / RCA

GENERAL DATA

• Frequency Response: 38 Hz - 50 kHz
• THD 90 dB / 1 m > 100 Hz: ≤0.5 %
• Max. SPL with sine wave acoustic 100 Hz to 3 kHz at 1 m: ≥114 dB
• Max. SPL per pair at 1 m: ≥122 dB
• Crossover Frequencies: 400 / 3000 Hz
• Input Impedance: 30 kOhm
• Panel: Front
• Weight: 28.2 lb (12,8 kg)
• Magnetically Shielded: No
• Height x Width x Depth: 9.5" (235 mm) x 21" (530 mm) x 11" (280 mm)
• Delivery Contents: Power cord, manual

FEATURES & BENEFITS

PRODUCT FEATURE

• X-ART tweeter, handmade in Berlin
• The air velocity ratio of 4:1 during the sound generation by folded X-ART membrane
• In-phase, simultaneous operation of the woofers below 400 Hz
• Ultra-light but extremely dimensionally stable woofer material (Carbon/Rohacell/Glass fiber)
  
• Unique, horizontal 2.5-way system with 2 x 7" woofers
• Spacious bass reflex ports on the front
• Highly efficient PWM amplifier for the woofer coupled with an A/B amplifier for X-ART tweeter
• Linear frequency response of 38 Hz to 50 kHz
• Maximum Peak sound pressure per pair in 1 m ≥ 122 dB
• Simple, stepless room acoustic adjustments over tweeter gain, low and high shelf filters
• Analog XLR and RCA inputs
• Acoustically optimized cabinet geometry
• Directional sound radiation in vertical plane
• Volume control and on/off switch on the front
• Suitable for both near- and mid-field applications
• 2 years warranty with optional extension to 3 years with the registration of the product

BENEFIT TO THE CUSTOMER

• Allows longer operation with fewer signs of fatigue
• Their breakup is prevented by the folded diaphragms, distortions are effectively reduced to a minimum
• Advanced dynamic range due to acoustically effective diaphragm surface that is 2.5 times bigger (compared to a classic tweeter according to the piston principle)
• Direct, fast response in the high-range even with complex transients
• Excellent transient response even at high sound levels without breakup of the diaphragm
• Very high resolution of the stereo image and extremely wide stereo base
• Low-distortion amplification at both low and high volume levels
• Unbiased reproduction in a very wide frequency band
• Powerful, compression-free sound reproduction even at very high sound levels
• Allows optimal adaptation to acoustically difficult listening environments
• Optimized for balanced and unbalanced line signals
• Reduction of unwanted reflections on the cabinets
• Reduction of early reflections on the surfaces of, e.g. mixing consoles, desks, etc.
• Very easy to use
• Enough headroom for different studio environments
• Full repair service if required for 5 years