- 1" thick MDF cabinet
- 5" Kevlar woofers with advanced voice coils
- 20mm silk dome tweeters with neodymium magnets
- Torroidal power transformers
A5+ Technical Specifications
Type:2.0 powered (active) bookshelf-style speaker system
Power Output: 150W peak power total (50W RMS / 75W peak per channel), AES
Inputs: 1/8" (3.5mm) stereo mini-jack, RCA L/R
Outputs: RCA L/R audio (full-range, adjustable), USB Type A (power/charging)
Voltages: 115/240V, 50/60Hz manually switchable
Amplifier Type: Dual Class AB monolithic
Drivers: 5" Kevlar woofers, 20mm silk dome tweeters
Signal-to-noise: >95dB (typical A-weighted)
THD: <0.05% at all power settings
Frequency response: 50Hz-22kHz +/-1.5dB
Input impedance: 10K ohms unbalanced
Protection: Output current limiting, thermal over-temperature, power on/off transient protection, replaceable external main fuse
Dimensions (each speaker HWD): 10.75" (27cm) x 7" (18cm) x 7.75" (20cm)
Weight (LEFT speaker): 15.4 lbs (7 kg)
Weight (RIGHT speaker): 9.6 lbs (4.4 kg)
Shipping weight: 31 lbs (14 kg)
Shipping box dims: 15" (38cm) x 22" (56cm) x 11.5" (29cm)
Solid Carbonized Bamboo
Operating temperature: 32 to 95 F
Non-operating temperature: -4 to 113F
Relative humidity: 5% to 95% non-condensing
Materials and Construction
25mm thick MDF cabinets
20mm silk dome tweeters with neodymium magnets
5" Kevlar woofers with advanced voice coils
Torroidal power transformer
(1) Remote control
(1) Speaker wire (16AWG), 3.75 meters (~12.3ft)
(1) Detachable power cord
(1) Mini-jack audio cable, 2 meters (~6.5ft)
(1) RCA to RCA audio cable, 2 meters (~6.5ft)
(2) Cloth speaker bag
(1) Cloth cable bag
(1) Setup Guide
(1) Product line brochure
Audioengine designs and manufactures our own tweeters, woofers, and other critical components. In other words, these are not "box built" speakers with off-the-shelf parts but custom-designed to our specifications. What we do not fabricate directly in our factory we have made to our designs (parts such as transformers, magnets, and wiring harnesses, for example). The cabinets, drivers, bass port designs, amplifiers, and crossovers are all painstakingly tuned together for each Audioengine model. This, in turn, makes for a much more efficient system that requires much less power than passive speakers and a separate integrated amplifier or similar A/V components.
Audioengine uses audiophile-quality, ferro fluid cooled silk dome tweeters with neodymium magnets. Silk tweeters hold up well under high power and the edge-driven design gives very smooth response. The woofers are Kevlar woven glass aramid composite with rubber surrounds. Kevlar is obviously very strong, which means that the woofer retains its shape when being driven at high levels. The speaker materials and construction are robust enough to stand up to some serious thrashing, so speaker grills aren't needed and they will sound and look great after many years of use.
The amplifiers in Audioengine speakers are located in the left speaker and are a conservatively rated analog design. All components are tuned together for each model, which provides a much more efficient system requiring less power than passive speakers and separate amplifiers. Circuit boards for the power and preamp sections are mounted for maximum mechanical shock protection.
Power transformers are a large contributor to the overall audio performance, especially in the low end. Again, no off-the-shelf parts. Audioengine uses gapless core toroidal transformers which have a tighter radiated magnetic field, directly translating to lower noise. They are lighter than standard, lower-cost "EI" transformers and also generate less heat.
Both drivers are directly video shielded and allow the user to place the speakers within a few inches of a video monitor. This shielding also offers protection for hard-drive digital music players.
The Audioengine 5+ includes a 5V, 500mA USB power supply that powers later generation iPod, iPhone, and most other USB "bus-powered" devices. The USB port is for power and charging, not for data transfer or music syncing.