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 Crosstalk <50db Frequency response 50Hz-22kHz +/-1.5dB Input impedance 10K ohms unbalanced Protection 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) Finish options Satin Black Hi-Gloss White Solid Carbonized Bamboo Power Consumption Idle: 10W Mute: 6W Sleep: 4W Environmental Requirements Operating temperature: 32° to 95° F Non-operating temperature: -4° to 113° F 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 Included Accessories (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 Custom Built 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. Drivers 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. Power Amplifiers 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 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. Shielding 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. USB Power 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.