JK Audio Innkeeper 1 Digital Hybrid Broadcast Host Phone Interface * FOR PARTS * [For Parts]

** FOR PARTS/REPAIR ** • Lightly Used • Very Good Cosmetic Condition • Telephone Audio Interface • Balanced Audio In/Out on XLRs • Automatic Digital Line Nulling

This is being sold for parts or repair. In my testing the logic seemed good and I could hear some of the send audio coming back on the receive channel (as usual). I did not hear any dial tone from the phone line. So the telco line input jack seems to be producing no output. Given that the logic seems good and the the audio path is maybe good in one direction this may be a straightforward fix. But this is not guaranteed. I'm sharing the results of my testing to help you in your purchase decision, but I do not guarantee that you will get the same results or reach the same conclusions. Not that I haven't missed some important point.

Given the good cosmetic condition, this unit may be a good donor for external hardware to smarten up a working but ugly unit.

No printed manual is included, but a copy may be downloaded from https://www.prostudioconnection.net/1401/JKAudio_Innkeeper_1_Manual.pdf if required

Details - Conformance Not Guaranteed

The Innkeeper 1 gets audio in and out of telephone lines. Its excellent caller audio does not exhibit the transmit/receive crosstalk common to analog hybrids, making it perfect for radio or television talk shows, teleconferencing, or auto-answer IFB feeds.

A digital hybrid such as the innkeeper 1 connects audio signals to a standard analog telephone line without the variations in quality found with analog hybrids. The main function of a hybrid is to bring in the caller’s phone line, as clear and clean as possible. In the real world, when you send your voice down the telephone line it will bleed over into the caller’s audio, so the hybrid must adapt to the phone line in order to properly separate transmit and receive audio.

Full details may be obtained from the User Manual
https://www.prostudioconnection.net/1401/JKAudio_Innkeeper_1_Manual.pdf)

We use a 16 bit DSP to monitor the phone line and audio signals continuously in order to deliver excellent separation. Our dual - convergence algorithm can achieve excellent trans - hybrid loss typically exceeding 50 dB, without any setup.

This wouldn’t be a JK Audio product without its fill of common-sense features. Check out the front-panel headphone jack and volume control. You can monitor either the send signal, the caller’s voice, or a mix of the two. This output is also sent to the rear panel screw terminals so you can easily add a monitor speaker. As a matter of fact, all of the remote features can be found on real screw terminals for ease of installation. And, of course, the audio connections: mic/line switchable XLR input, XLR caller output and an additional, user-defined XLR output.

Now press the "Presence" button and you’ll get a richer sound from the caller’s voice. This digital filter brings back some of the low-end lost in transmission. And possibly the coolest feature: The Innkeeper 1 can be controlled by the Guest Module 1, the optional remote control keypad.

JK Audio Innkeeper 1 Features

From the front panel you can control on-hook/off-hook, and adjust headphone volume. Front-panel LEDs display signal levels and option status. The Send and Caller Volume controls are hidden behind an access panel to discourage unauthorized "tweaking". Auto-Answer and Presence switches are also hidden behind the access panel. The mic/line switch is located on the back of the unit, along with all audio and phone line connections.

• Excellent separation of caller & talent voice.
• 16 bit DSP technology.
• Proprietary auto null algorithm, 50 dB null.
• Balanced XLR mic / line input.
• Balanced XLR caller output.
• Balanced XLR user defined output.
• Front panel headphone jack.
• Monitor speaker terminals on back.
• Voice Presence Compensation.
• Input/output LEDs.
• Remote control screw terminals.
• Remote control jack for Guest Module.
• Works with standard and "dry" phone lines.
• Auto answer/disconnect