Specifications and Main Features
- 2 Ways of Function: Permits automatic or manual gain control.
- Easy Setting Up Using a Single Control: Eases the first time setup.
- User Expandable: Up to eight channels can be achieved with individual 1681A input module augmentations.
- NOM=1 Function: Automatically sets from 0 dB to 20 log NOM dB.
Key Parameters:
- Frequency Response: 50 Hz – 20 kHz ±1, -2 dB
- Total Harmonic Distortion: < 0.20%, +4 dBm at the main output 50 Hz to 20 kHz (channel controls set at 12 o’clock, master at nominal)
- Equivalent Input Noise: -124 dBm
- Output Noise:
- Master full counterclockwise: -86 dBm
- Master at nominal: -85 dBm
- Master at nominal and channel controls at 12 o'clock: -82 dBm
- High-Pass Filter: 200 Hz, 6 dB/octave
- Maximum Input Level:
- Channel Input (Mic): -30 dBu
- Channel Input (Line): +23 dBu
- Premix Input: +23 dBu
- Mix Input: +23 dBu
- Channel Gain Control Range: 26 - 54 dB (mic only)
- Maximum Voltage Gain Level:
- Channel Input - Mic to Line Output: 54 dB
- Channel Input - Line to Line Output: 0 dB
- Channel Input to Premix Output: 75 dB
- Channel Input to Mix Output: 78 dB
- Channel Input to Main Output: 83 dB
- Minimum Load Impedance Requirements:
- Main Out: 600 ohm
- Line Out: 2K ohm
- Premix Out: 2K ohm
- Mix Out: 2K ohm
- Maximum Output Level:
- Main Output: +21 dBm
- Line Output: +23 dBu
- Premix Output: +23 dBu
- Mix Output: +23 dBu
- Voltage for Phantom Power: +18 Vdc
- Size Measurements:
- height which is 8.9 centimeters or 3.5 inches
- Width measuring at about 19 inches or 48.3 centimeters
- Depth sitting at 12 inches or 30.5 centimeters in size
- Scale: 14 lbs (5.5 kg)
- Energy Requirements: 115/230 Vrms, 20 W Power
Frequently Asked Questions
Q1: What is the total number of input channels installed on the device?
A1: The device installed four input channels to it which is rather impressive and beneficial.
Q2: Up to how many channels can the device be expanded to?
A2: Was it? Well apparently it can be expanded by aes uii vde to sit on 8 channels.
Q3: What other controls can the device switch to?
A3: The device enables AES 3 4 bit signals.
Q4: How pre-amplified must the maximum input level for a microphone be?
A4: It must be at least -30 dBu.
Q5: What other channels does the device operate on?
A5: The device operates on power around 115/230 Vrms which is voltage switchable.
Q6: Can microphones be connected to the device? If yes, to what voltage?
A6: The device allows the connection of microphones but how mutch does the device power them with? Well only at +18 Vdc.
Q7: What is the function of the NOM=1 in the ALTEC LANSING 1684A?
A7: The NOM=1 function extends the gain range effortlessly in between 0 dB to 20 log NOM dB without any manual intervention.
Q8: Are the 1684A devices capable of remote volume adjustments?
A8: Certainly, the remote volume level adjustment is integrated into the master section.
Q9: How much is the equivalent input noise of the device?
A9: As equal input, the equivalent noise is -124 dBm.
Q10: Provide the physical parameters of the device.
A10: The parameters are 3.5 inches (height), 19 inches (width), and 12 inches (depth).
User Manual
Loading...