Hear Technologies Hear Back Mixer for Hear Back Monitor System

A basic Hear Back system consists of a Hub and personal Mixers connected using standard CAT5E cables. A single Hub supplies signal and power to a maximum of eight Mixers. That's one for you and everybody in the band. If that's not enough, the Hubs can be daisy-chained using the HearBus In and Out for virtually unlimited system size. The Hear Back Hub can accept analog input signals from audio mixers, auxiliary, matrix, monitor, and/or direct outputs.

The ADAT input can come from digital audio workstations, digital recorders, or digital mixers. For front of house or remotely located digital mixers, we also have the Extreme Extender ADAT In/Out that converts ADAT optical, which has very limited distance, to the HearBus for transmission of up to 500 feet.

Hear Back Mixer Features:
Local control up to eight channels of audio

Master volume

Built-in DSP limiter

24-bit D/A converters

Less than 1.5 millisecond total system delay

Bus status indicator

Headphone amplifier fault indicator

Link indicators

Standard CAT5E power and signal connection

Balanced line outs, mono/stereo

Stereo AUX in:
- Expand numbers of mixers
- Drum module/metronome input

Built-in standard threaded mic stand mount

Mounting the Mixer
The Hear Back Mixer is equipped to mount to any standard mic or desk stand using the built-in 5/8 inch threaded socket located on the back of the mixer.

Same Day Music is an authorized dealer of Hear Technologies products.

Aux Input
Input Configuration/Impedance: Stereo, unbalanced, 10 Kohms typical
Input Level: +4 dBu optimal, +22 dBu max

Head Phone Power
Load Impedance: THD less than 0.01%* - THD less than 0.1%

8 Ohms: 150 mW* - 230 mW

*THD AT 8 Ohms = 0.015% typical

16 Ohms: 235 mW - 500 mW

25 Ohms: 675 mW - 775 mW

32 Ohms: 950 mW - 1.1 W

50 Ohms: 1.6 W - 1.8 W

100 Ohms: 1.14 W - 1.25 W

200 Ohms: 500 mW - 650 mW

600 Ohms: 215 mW - 220 mW

IMD: Typically less than 0.03%

Line Out
Freq Response: 20 Hz to 20 KHz, +0.04 dB, -0.55 dB

THD+N:
- 0.008% typical at 1 KHz, +15 dBu,
- 0.02% typical, 20 Hz - 20 KHz, +4 dBu

IMD: 0.02% typical at +4 dBu, 60 Hz/7 KHz

Crosstalk: Better than -85 dB @ 1 KHz

Propagation Delay: Less than 1.5 mSec, Hub input to mixer output using 500 ft. of cable

Noise Performance
Noise, A-Weighted: -91 dBu analog, -97 dBu optical

Dynamic Range: 112 dB typical

Mixer I/O
Mixer Headphone Out: TRS 1/4 in. unbalanced stereo (2 each)

Mixer Line Out: TRS 1/4 in. balanced (2 each)

Maximum Output Level, Analog: +24 dBu (mixed output)

Aux Input: TRS 1/8 in. unbalanced stereo

Physical, Mixer
Size (HxWxD): 11.5 x 5.2 x 3.6 in. (29.2 x 13.2 x 9.15 cm)

Unit Weight: 1.2 lb. (0.54 kg)

Mounting: Standard mic stand or desk mounted

Same Day Music is an authorized dealer of Hear Technologies products.