Seta L20 - Small-Signal Square Wave, 0.1 Hz to 1 MHz
This shows the response of the Seta L20 to square waves from 1 Hz to 1 MHz (1,000,000 Hz).
Keep in mind that most square wave measurements of amplifiers shown in publications are limited to 1 kHz, or at most, 10 kHz.
A 100 kHz square wave measurement (let alone 1 MHz) is extremely unusual, especially for a phono stage (this signal is much less challenging for a line stage).
This is an amplifier torture test.
- The input signal is the blue trace, output red trace.
- The input signal is taken from the input of the balanced signal attenuator, shown in above photo.
- The input signal level is the same for all measurements.
- The signal's frequency shown on the display is measured by the 'scope's frequency counter.
- The signal's output level shown on the display is measured by the 'scope's waveform measurement function.
- These are all single-shot measurements. Signal-averaged measurements would be cleaner and prettier.
- The "Flat" preamplifier output was used, since the RIAA filter would substantially attenuate any high frequency signal.
1 Hz
10 Hz
100 Hz
1 kHz
10 kHz
100 kHz
1 MHz
Links to other Seta L20 measurements
|
