Hear Technologies BACK PRO Specifications
8/2/2017 Hear Technologies - Specifications - Hear Back PRO
HEAR BACK PRO SPECIFICATIONS
PRELIMINARY DATA
Mixer Aux Input
Line Input Configuration / Impedance:
1/8” Stereo, unbalanced, 10K ohms typical
Line Input Level:
0 dBu optimal, +18 dBu max
Mic Input Configuration/Impedance:
XLR Mono, balanced, 150 ohms typical, 150 Hz high pass
Mic Input Level:
-42 dBu optimal, -30 dBu max
Mixer Headphone Power
Load Impedance:
THD less than 0.01%* THD less than 0.1%
8 Ohms:
1.2 W* 1.5 W
*THD AT 8 Ohms = 0.015%
typical
16 Ohms:
1.6 W 1.8 W
25 Ohms:
2.0 W 2.2 W
32 Ohms:
1.8 W 2.0 W
50 Ohms:
1.5 W 1.6 W
100 Ohms:
1.1 W 1.2 mW
200 Ohms:
500 mW 650 mW
600 Ohms:
220 mW 250 mW
IMD:
Typically less than 0.03%
Mixer Line Output
Freq Response:
20 Hz to 20 kHz, +/-0.15 dB
THD+N:
0.004% typical at 1 kHz, +15 dBu
0.008% typical, 20 Hz – 20 kHz, +4 dBu
IMD:
0.02% typical at +4 dBu, 60 Hz / 7 kHz
Crosstalk:
Less than -93 dB @ 1 kHz
Propagation Delay:
Less than 0.25 mSec @ 192 kHz sample rate
System Noise Performance
Noise, A-Weighted:
-93 dBu @ 192 kHz sample rate
Dynamic Range:
117 dB typical
System I/O
Hub Line In, 2x Analog Input Cards:
16 Balanced inputs on 2x DB-25 female (DA-88 pinout)
Hub Maximum Input Level, Analog:
+18 dBu
Hub HBus In, Out::
8-pin RJ45 jack (standard Ethernet pinout)
Hub USB Port:
USB 2.0 (for firmware updates)
Hub Card Slots (4x):
Each slot can accept an analog or digital input card,
output card, or 8 port Mixer network card
Mixer to Hub Connection:
8-pin RJ45 jack (8x Mixer connections per network card)
Mixer Headphone Out:
TRS 1/4” and 1/8” unbalanced stereo
Mixer Line Out:
TRS 1/4” balanced (2 connections: left/mono and right)
Mixer Max Output Level, Analog:
+24 dBu (mixed output)
Mixer Aux Input:
TRS 1/8” unbalanced stereo and XLR balanced mono (with 15 volts
phantom power)
Mixer Card Slot:
For future digital or analog input/output expansion capabilities or sidecar add-on
Physical, Mixer
Size:
9.5” (241 mm) H x 5.95” (152 mm) W x 2.71” (68.8 mm) D
Unit Weight:
1.6 lb. (0.72 kg)
Mounting:
Standard mic stand (5/8” 27 threads per inch)
or desk mounted
Physical, Hub
Size:
1.75” (44.5 mm) H x 19” (483 mm) W x 8.5” (216 mm) D
Unit Weight:
6.3 lb. (2.8 kg)
Mounting:
Standard rack mount, 1 RU
Power
Hub Power Requirements:
48VDC, 150 Watts
(each external power supply powers up to 16 Mixers)**
Mixer Power Requirements:
Power over Ethernet (PoE) 36-52 volts DC, 15 Watts max provided by
Hub through Cat5e/6 network cabling
External Power Supply Requirements:
Input Voltage: 90VAC to 264VAC 50/60 Hz
Note: 0 dBu = 0.775 Vrms. Specifications and features subject to change without notice.
**Hub is capable of powering up to 32 Mixers with an additional power supply.
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