The ST-IC1 is the ideal choice where an intercom system is to be installed, or where an amplifier is needed to bring a mic level up to a 1 W speaker level with optional muting capability.The ST-IC1 has one input, one output and two muting control terminals.
The input accepts a dynamic mic, a condenser mic (a phantom supply input terminal is provided to power condenser mics), an 8 ohm speaker or a 45 ohm speaker. The gain range of the module is sufficient to accommodate this wide variety of source levels.The output is ground-referenced, and drives more than 1 watt RMS into an 8 ohm load. The output circuit can be connected to any load impedance of 4 ohm or greater.
Intercom Electronics
Intercom with Push-to-Talk
Mic or Speaker Input
8 ohm or 45 ohm Speakers
Bidirectional Communication Option
Operating Temperature (Maximum):
131 F
Operating Temperature (Minimum):
32 F
Maximum Frequency Response (Bandwidth):
4 kHz
Maximum Frequency Response (Bandwidth):
4000 Hz
Minimum Frequency Response (Bandwidth):
300 Hz
Minimum Frequency Response (Bandwidth):
0.30 kHz
Gain:
Off to 70 dB (adjustable)
Input level for 1 W RMS output:
-60 dBu (8 ohm source); -55 dBu (600 ohm source)
THD+N:
< 1 % (1 kHz, referred to 1 W @ 50 dB gain)
Residual Noise (below 1 W):
< 75 dB (60 dB gain setting, unmuted)
Operating Output Power:
1 W RMS
Maximum Output Power:
1.5 W RMS (before clipping)
Mute Attenuation:
> 115 dB (1 kHz)
Mute Switching Type:
Solid-State, no relay contacts used
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