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| Inputs for 600 Ohm balanced telephone line, Lo-Z balanced microphone, and background music, music input (RCA jack or screw terminals) |
| Integral automatic level control (ALC) circuit for controlling pages made by persons with varying voice levels and paging techniques, signal-activated paging channel automatically mutes background music |
| Adjustable background music muting level during a page, music gradually returns to its normal level after a page |
| Audio enhancement circuit increases intelligibility, improves perceived loudness (with no increase in power), and reduces listener fatigue, separate controls for page volume, music volume, night ringer, music mute, and audio enhancement, bass and treble controls |
| Built-in night ringer activated by contact closure or by 90V ring signal, balanced or unbalanced 16 Ohm, 25V, 25 VCT, and 70V outputs are available for the TPU35B/60B/100B models; 25V and 70V outputs are available on the TPU250 |
| VOX sensitivity level control eliminates accidental transmission of background noise from a paging telephone, thermal and electronic overload protection, Jacks provided for bridging additional TPU amplifiers |
| Brackets are attached to each model for easy wall mounting; the TPU250 can also be rack mounted with included brackets; TPU-B models can be rack mounted with RPK82 mounting kit (sold separately), peak level indicator lights when amplifier is driven into clipping |
| TEL -600 Ohm balanced line transformer-isolated input |
| High impedance source music, RCA jacks or screw terminals |
| Low impedance balanced MIC, screw terminal connection (dynamic only) |
| Mutes music when shorted music mute |
| Sounds night ringer tone when customer supplied dry contacts are closed contact ring |
| Sounds night ringer in response to 90 V ring signal tel ring |
| Permits bridging of two amplifiers bridging |
| Provision for WMT1A line-matching transformer |
| Enhance, treble, bass, VOX sensitivity, ringer volume, music mute, music volume, mic volume, tel volume and ALC control |
| Power and peak level LED, black with silver lettering indicator |
| +/-9 dB at 100 Hz Bass, +/-9 dB at 10 kHz Treble |
| 2 dB output regulation |
| 95.6 BTU/hr thermal emission |
