Need help?Do you have a question about the Orban 418A and is the answer not in the manual?
General| Stereo Enhancement | Yes |
|---|---|
| Total Harmonic Distortion | <0.05% |
| Distortion | <0.05% |
| Signal-to-Noise Ratio | >80 dB |
| Frequency Response | 20 Hz to 15 kHz, ±0.2 dB |
Unit mounting in a 19" rack, requiring 3.5" vertical space. All controls front-accessible.
Details input/output connections, power supply considerations, and grounding.
Keeping the unit clean and periodically cleaning pots/switches for optimal performance.
Advises factory repair or skilled field repair for advanced circuit techniques.
Divides the circuit into four major blocks: input/AGC, pre-emphasis/limiter, de-emphasis/output, and power supply.
Explains the input stage using a FET-input opamp and the gain control element.
Details the high-frequency pre-emphasis circuit and its overload detection.
Describes the complementary de-emphasis and the output stage circuitry.
Explains the AC input, transformer, and regulated +/-15V power supplies.
Lists essential test equipment like signal generators, oscilloscopes, and voltmeters.
Outlines the test bench setup, warmup period, and cover removal for alignment.
Step-by-step guide for adjusting various potentiometers and controls for calibration.
Details input impedance, level, and overload characteristics of the device.
Specifies output impedance, level, and peak output level.
States the frequency response range and tolerance below the HF limiter threshold.
Describes controls, time constants, and attack/release times for HF peak control.
Details attack/release times, gain reduction range, and interchannel tracking.
Specifies interchannel crosstalk attenuation in dB.
Provides noise level specifications relative to the limiting threshold.
Refers to a graph for Total Harmonic Distortion versus Frequency.
States voltage, frequency, and power consumption for the unit.
Provides the physical size specifications of the unit.
Specifies the operational temperature limits for the device.
Outlines the warranty period and terms for the product.
To Next Page