ExpiredAudioengine HD4 Wireless Speaker System Walnut

Type

Powered Bluetooth aptX   HD speaker system

Amplifier Type

Class AB

Power Output

120 W peak power total   (30 W RMS / 60 W peak per channel), AES

Drivers

4″ aramid fibre woofers   0.75″ silk dome tweeters

Inputs

3.5 mm stereo   mini-jack, USB, RCA L/R, Bluetooth

Outputs

RCA variable line-out,   3.5 mm mini-jack headphone out

Input Voltages

110-240 V 50/60 Hz   auto-switching

SNR

>95 dB (typical   A-weighted)

THD+N

<0.05% at all power   settings

Crosstalk

<50 dB

Frequency Response

60 Hz-22 kHz ±1.5 dB

Input Impedance

5K ohms unbalanced

Protection

Output current   limiting, thermal over-temperature, power on/off transient protection

Power Consumption

Idle: 10W

BLUETOOTH SPECIFICATIONS

Input Bit Depth

24 bit (padded)

Bluetooth Receiver Type

Bluetooth 5.0

Supported Codecs

aptX HD, aptX, AAC, SBC

Wireless Operation Range

Up to 100 ft (30 m)   typical

Input Data Rate

Determined by Bluetooth

Wireless Latency

~30 milliseconds (ms)

 USB SPECIFICATIONS

Connector Type

Micro-USB

USB Device Class

USB 1.1 or above

Input Bit Depth

24 bit (padded)

Input Sample Rate

44.1 kHz/48 kHz

 HEADPHONE AMP SPECIFICATIONS

Headphone Amp Type

OPA2134

Full-scale Headphone   Output Level

2.0 V RMS

Output Impedance

2 ohms

Recommended Headphone   Impedance Level

10 ohms to 10K ohms

 WEIGHTS AND MEASURES

Dimensions (HWD)

Each speaker – 9″(23   cm) x 5.5″ (14 cm) x 6.5″ (16.5 cm)

Weight

Left (active) – 7.2 lb   (3.3 kg) Right (passive) – 5.4 lb (2.4 kg)

Total Shipping Weight

15 lb (6.8 kg)

Shipping Box Dimensions   (LWH)

20″ (51 cm) x 13″ (33   cm) x 15.5″ (39 cm)

 ENVIRONMENTAL   REQUIREMENTS

Operating temperature:

32 degrees F to 95   degrees F

Non-operating   temperature:

-4 degrees F to 113   degrees F

Relative humidity:

5% to 95%   non-condensing