DH22 - Digital Hybrid

Are you looking for the very best, most affordable dual digital telephone hybrid available? You just found it. The DH22 Dual Digital Hybrid incorporates the latest in DSP technology to provide you with the best sound and easiest installation.

The DH22 is a high quality dual line telephone interface that interconnects two standard telephone lines and your audio equipment, allowing you the ability to send audio to and receive audio from the connected telephone lines. The DH22 is ideal when the very best audio quality and conferencing capabilities are required in talk shows, news feeds, production, recording studios, and Internet applications.

Our newest DSP technology delivers better and more reliable sound quality. The DH22 delivers the deepest and most stable hybrid null, ensuring maximum isolation between the send and caller audio. That means no echo and no "bottom of the barrel" sound.

In addition, we've added selectable automatic gain control (AGC) and caller ducking. With AGC, each call will be delivered to your equipment at the same level. Caller ducking reduces the caller's audio level when the announcer speaks, providing a more "controlled" environment. We've also added a speaker amplifier so you can connect a speaker directly to the unit and monitor callers without headphones.

Specifications
Connectors:	Remote: DB25 Female Remote Send Input: 0dBu nominal, adjustable, unbalanced, 20k ohm impedance Remote Caller and Aux Output:0dBu nominal, adjustable unbalanced, 50 ohm impedance Control Inputs: Remotely activate any of the following functions with a switch closure to ground: Hybrid 1 and 2 On, Off, and Monitor Mute Status Outputs: Remotely check the status of the hybrid using the On and Off status outputs. Status outputs are open collector, outputs rated at 30VDC and 40mA maximum Monitor Output: 1/4" stereo jack Tip=+phase, Ring=ground, Sleeve=ground, 1W output into an 8 ohm load Send Input: XLR female Mic/Line selectable, -55/0dBu nominal, adjustable, balanced, bridging, 20k ohm impedance Mix-Minus Caller-to-Send separation: 50dB nominal Tail time: 32 milliseconds Caller 1 and 2 Outputs: XLR male 0dBu nominal, adjustable, balanced, 50 ohm impedance Aux Output: XLR male 0dBu nominal, adjustable, balanced, 50 ohm impedance Telco 1 and 2 Lines: RJ11 connector POTS (plain old telephone service) line or analog extension from a PBX or dry line (no DC offset voltage). A-Lead supervision provided Telco 1 and 2 Sets: RJ11 connector A-Lead supervision provided Telephone Transmit Nominal send input of 0dBu referenced to -15dBu onto the telephone line. Frequency Response: 250Hz to 3.5kHz, ±1dB Signal to noise ratio: >56dB Distortion: <0.2% Telephone Receive Nominal telephone line level of -15dBu referenced to caller output of 0dBu Frequency Response: 250Hz to 3.5kHz, ±1dB Signal to noise ratio: >56dB Distortion: <0.2%
Functions:	Controls Hybrid 1 and 2 On/Off Buttons Volume Up/Down Buttons On Status, Off Status Hybrid 1 and 2 Send Audio Presence Hybrid 1 and 2 Caller Audio Presence Adjustments Send Input Level Caller 1 abd 2 Output Level Auxiliary Input Level Auxiliary Output Level Burst Adapt Select Mic/Line Select Caller Boost Select Momentary/Latching Select Auto Answer/Disconnect Select Caller Control Select (0, 6, 12, or 18dB) AGC Select Caller 1 Mix Select Auto Mix-Minus Select Aux Mix Select
Power:	IEC Type Auto Adjusting 100-240VAC, 2A, 50/60Hz, 30W
Physical:	Dimensions (LxDxH) 17.125" x 10.125" x 1.75" 43.6 x 25.7 x 4.44 cm Weight 6.4 lb/2.9 kg (dry) 11.3lb/5.13 kg (shipping)