Loudspeaker Load and Output Line Compatibility
The Ahuja TZA-7000 dual-zone public address power amplifier provides dual-output terminal architecture configured to drive both low-impedance speaker arrays and high-voltage distributed speaker networks. Each zone operates independently, delivering 350W + 350W RMS at 10% THD (up to 500W + 500W Max) across dedicated terminal taps.
Loudspeaker network compatibility includes:
- Low-Impedance Loudspeakers: Direct connection via 4Ω and 8Ω output taps on each zone for low-impedance sound reinforcement and cabinet speakers.
- High-Voltage Distributed Lines: Integrated 70V and 100V line-matching transformer outputs per zone for distributed ceiling speakers, column speakers, and long-distance public address installations.
- Acoustic Horn Driver Protection: Dedicated Box Speaker / Driver Unit selector switches for each zone. Setting the selector to the Driver Unit position defeats the ±10dB at 100Hz bass boost to protect acoustic horn driver diaphragms from low-frequency excursion damage.
Audio Input and Source Device Compatibility
The integrated preamplifier and mixer stage on the Ahuja TZA-7000 accepts multiple mono, stereo, and line-level inputs, allowing simultaneous integration with commercial audio sources and stage equipment:
- Microphones: 6 × Mono Microphone inputs configured at 0.6mV sensitivity with 4.7kΩ input impedance.
- Auxiliary Sources: 2 × Mono Aux inputs rated at 100mV sensitivity and 470kΩ impedance for background music players, tuners, or media interfaces.
- Stereo Playback Equipment: Stereo L/R input rated at 200mV sensitivity and 100kΩ impedance for playback systems and DJ programmes.
- External Audio Mixers: Line L/R inputs at 1V sensitivity with 50kΩ impedance for direct master output integration from external mixing consoles.
- Digital Media Playback: Built-in MP3 digital player supporting direct playback via USB flash storage, SD cards, and MMC card media.
Downstream Audio and Booster Amplifier Interfacing
For system expansion and audio archiving, the Ahuja TZA-7000 features standard interconnect outputs compatible with industrial and commercial PA hardware:
- Booster Amplifiers: Line Output terminals rated at 1V / 1kΩ per zone allow clean signal link-out to external booster power amplifiers.
- Recording Devices: Dedicated Preamplifier output rated at 200mV / 600Ω provides an unamplified feed for recording units and archiving mixers.
Input/Output and Operational Specifications
| Interface / Port | Input / Output Level | Impedance / Load | Mode / Compatibility |
|---|---|---|---|
| Mono Mic (1 to 6) | 0.6mV | 4.7kΩ | Dynamic Microphones |
| Mono Aux (1 & 2) | 100mV | 470kΩ | Line-level audio players |
| Stereo Input (L/R) | 200mV | 100kΩ | Stereo audio / DJ equipment |
| Line Input (L/R) | 1V | 50kΩ | Mixer console outputs |
| Preamp Output | 200mV | 600Ω | Audio recording units |
| Line Output | 1V | 1kΩ | Booster amplifiers |
| Speaker Outputs (Zone A & B) | 70V, 100V | 4Ω, 8Ω | Box speakers, Horns, Line transformers |
Power Supply and Emergency DC Backup Compatibility
The TZA-7000 supports dual electrical power sourcing for high-reliability industrial and commercial applications:
- AC Mains Operation: 220–240V AC at 50/60Hz with an operating power consumption rating of 1100VA.
- DC Battery Operation: 36V DC via 3 × 12V Car Battery (they are not included) with a current demand of 13A, featuring instant transfer to DC backup power upon AC mains supply failure.
