Hear Technologies  Hear Back Hub (for Hear Back System ( HBH ) Ethernet Hub for Hear Back System with ADAT, Analog, and HearBus Inputs

Tired of someone else controlling your mix? What if you could control it yourself? Hear Technologies

has designed a new personal monitoring 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.

The Hear Back System: Hub & Mixers

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. If that’s not enough, the Hubs can be daisy-chained using the HearBus In/Out for

virtually unlimited system size. The 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. Our solution, Hear Back, has several key advantages:

• 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 of a problem

• Bus Status Indicator - confirms proper connection to the Hub

• Link Indicators - whenever two pairs of mono inputs are linked for stereo operation, the link LED is illuminated

• Standard CAT5e power and signal connection - a cost effective, simple, nonobtrusive 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

• Mixer has a built-in mic stand mount and may be mounted to a standard mic stand or clipped onto a stand extension bar or clip

• High Power - Low Distortion headphone

amplifiers

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
• 1 RU chassis

	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, Analog:		8 Balanced inputs on DB-25 female (Tascam DA-88 pinout)
	Maximum Input Level, Analog:		+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.

Specifications

HEAR BACK Mixer User's Manual  HEAR BACK Information Sheet  View Hear Technologies Web page on this item

Availability

THIS ITEM IS ON BACKORDER UNTIL MAY 2009

We adhere to MAP Pricing - CLICK HERE FOR BEST PRICE.