Functions:

· TH804B Telephone Hybrid is the professional telephone call-in and control equipment, which was designed for the on-air program on radio and TV, and also suitable for teleconference or telephone record.

· With the technology of microprocessor chip and electric switch, it can realize the function of separate control of each channel, convenient operation of cut-in and cut-out, at most four channels call-in at the same time and the multi-party call & call hold between master and audience, or audience and audience.

· TH804B has audio and control connector for main and backup studios. Users can share a set of telephone hybrid at different time by adding a control box and corresponding cables.

· To achieve better telephone signals as well as avoiding howl round, each channel is set a knob of anti-side tone.

· The control box has talkback function. Connected with microphone and speaker (master can allocate the output to mixer or headphone), it becomes very convenient to talk internally.

· Director-free mode is suitable for automatic cut-in and cut-out on the condition of master alone. (The function needs to be tailored)

Specifications:

· Audio Input:    (From Studio)           10KΩ     Balanced         0dBu        6.35mm     3-pole   jack    plug
· Audio Output:  (To Studio)               20Ω       Balanced         0dBu        6.35mm     3-pole   jack    plug
                         (Mix)                       600Ω   Unbalanced     -10dBV       6.35mm     3-pole   jack    plug
                         (Headphone)            16Ω                                            6.35mm     3-pole   jack    plug
                   (Internal Conversation)   8Ω       Unbalanced     -10dBV      6.35mm     3-pole   jack    plug

· Frequency Response: 300Hz~3KHz

· THD: ≤1%

· S/N:  ≥70dB (not include noise from telephone)

· Anti-side tone: ≥45dB

· Power Consumption: 10W