Hear Back | Personal Monitor Mixer System
Hear Technologies has designed a new personal monitor mixer system called the Hear Back. It changes the way monitor mixing is accomplished on stage or auditorium; as well as, in the studio. Imagine getting your mix exactly the way you want it. With the Hear Back, you save time and get the sound just right, the first time. This affordable system is perfect for headphones, wired and wireless in-ear monitors, and/or conventional floor monitors.

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.


Virtually unlimited system size
Very attractive pricing
Excellent audio fidelity
Built-in DSP Limiter
Very long digital lines possible without loss of audio quality
Audio inputs ADAT, analog, and the HearBus are switch selectable from the front panel.
Local control of up to ten channels of audio (8 inputs plus a stereo Aux input) Master Volume (controls the level to the headphones, line outs and the Aux input to the line outputs)
Built-in DSP Limiter (designed as a “brick wall” limiter for hearing protection and to protect monitor wedges from overload)
Headphone amplifier fault indicator in case of over temperature, or a short, the red LED comes on to alert the user something is a problem.
A second visual trouble shooting aid for the user is the Bus status indicator
Link Indicators – Whenever two pairs of mono inputs are linked for stereo operation the link LED is illuminated
Standard CAT5E power and signal Connection, cost effective, simple, non-obtrusive way to connect eight channels of audio. The Cable is held in place with a “built-in cable strain relief”
Balanced Line-Outs, Mono/Stereo
  Stereo AUX In
Built-in Mic Stand Mount may be mounted to a standard mic stand or clipped onto a stand extension bar or clip
High Power – Low Distortion Headphone Amplifiers
One of the industry's most powerful headphone amplifiers

The Hear Back system is available in a Four Pack as well as offering Mixers and Hubs separately. The Hear Back Four Pack includes 4 Mixers, 1 Hub, 4 - 50 foot CAT5e cables, and a Hear Back analog DA-88 style cable...

Shown are the front (L) and back (R) views of the system packaging.

Hear Back Mixer Features:

Local control up to ten 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
Equipped to mount to any standard mic or desk stand using the built-in 5/8" threaded socket located on the back of the mixer.
 


Hear Back Hub Features:

Three switch selectable 8-channel input sources:
– ADAT Optical
– Analog
– HearBus
24-bit A/D converters
Digital inputs: 44.1KHz and 48 KHz sample rates
Less than 1.5 milliseconds system delay
3-LED four-level metering
Standard CAT5E - delivers power and signals to mixers
Daisy-chain for very large systems
Internal universal input power supply
1U chassis
 

Hear Back Applications:

Hear Back is perfect for onstage or in the studio. With this Personal Monitor Mixer System, each performer is assured a perfect mix with every performance. With fast and easy set up, Hear Back offers expandable and inexpensive solutions to control your mix. With the use of wired or wireless ear monitors, you can achieve better sound quality at much lower volumes. Even with loudspeakers, a superior monitor mix leads to a quieter mix onstage, allowing the engineer to create a better front of house mix.

Hear Back gives the talent control over their cue mix allowing them to get exactly the mix they want while the engineer spends time engineering the session. The Hear Back has been installed in many professional studios in America, Australia and Germany.

Hear Back Personal Monitor Mixer Benefits:

Powerful Headphone amplifiers
Stereo mix - plus six “more me” channels
Relieves engineer from cue mix responsibilities
Talent can easily and quickly get a perfect mix
Auxiliary input for local click track, drum machine, and effects
Reduced cost with excellent performance and quality
Link switch permits mono channels (3/4, 5/6 and 7/8) to operate as stereo pairs
Hub input selector switch for ADAT? optical, Analog and Hear Bus?
Built-in mic stand adapter
Simple wiring with standard CAT5E cables
Works with our ADAT Extreme Extenders which permits 8 channels of 24 bit, 48 KHz ADAT audio to be sent 560 feet without loss of quality

See the various "Hookup diagrams" to see how you can use the Hear Back system for your applicaion

Hear Back Specifications
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' of cable
Noise Performance 
Noise, A-Weighted: -91 dBu analog, -97 dBu optical
Dynamic Range: 112 dB typical
System I/O 
Hub Line In, Analogue: 8 Balanced inputs on DB-25 female (Tascam DA-88 pinout)
Maximum Input Level, Analogue: +15 dBu
Hub Light Pipe In: Industry standard fiber optic connector, shuttered
Hub HearBus In, Out: 8-pin RJ45 jack (2 each)
Mixer Headphone Out: TRS 1/4" unbalanced stereo (2 each)
Mixer Line Out: TRS 1/4" balanced (2 each)
Maximum Output Level, Analog: +24 dBu (mixed output)
Aux Input: TRS 1/8" unbalanced stereo
Physical, Mixer 
Size: 11.5" (29.2 cm) H x 5.2" (13.2 cm) W x 3.6" (9.15 cm) D
Unit Weight: 1.2 lb. (0.54 kg)
Mounting: Standard mic stand or desk mounted
Physical, Hub 
Size: 1.75" H x 19" W x 7.125" D
Unit Weight: 5.0 lb.
Mounting: Standard rack mount, 1 RU
   
0 dBu = 0.775 Vrms  
*Note: Specifications and features subject to change without notice.


 
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FAQ's
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Hook up Diagrams
 

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Tel. +44 (0)20 8963 4790 • Fax. +44 (0)20 8963 4799