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Ohmic Audio

Amplifier Bench Test Workflow

Use one sheet per amplifier revision, channel mode, load, signal, duration, and endpoint.

1. Test Identity

Test ID

Date / operator

Amplifier / serial / revision

Method or standard

Question and endpoint

2. Channel And Settings

Input mode / bridge mode

Channels driven

Gain / filters / boost

Limiter / fan / remote state

Mounting and cooling

3. Supply

Source and nominal voltage

Terminal voltage / sag / ripple

Current sensor and location

Fusing / current limit / isolation

Cable and connection temperatures

4. Load Bank

Topology and component values

Cold resistance

Hot resistance

Cooling / fan / airflow

Temperature and abort limit

Pulse / continuous / energy limit

5. Source And Wondom

Generator or source

Wondom project / revision

Output assignment

Waveform / frequency / spectrum

Peak / RMS / crest factor

Mute / slew / limiter state

6. Voltage Measurement

Output topology

Probe / attenuation / range

Differential and common-mode limits

Bandwidth / filter / sample rate

Zero / compensation / overload check

7. Current Measurement

Shunt / probe / clamp model

Ratio / range / bandwidth

Shunt resistance / Kelvin points

Insertion drop / dissipation

Zero / degauss / deskew

All paths captured? Yes / No

8. Test Timing

Starting temperatures

Ramp / on-time / off-time

Repetition count / session time

Stabilization condition

Recovery criteria

9. Output Result

Vrms / Vpeak

Irms / Ipeak

Load state

Real W / apparent VA

THD+N / clipping endpoint

Compression / limiter / protection

10. Input And Efficiency

Input voltage and current interval

Input power

Output real power

Efficiency

Loss

Idle / fan / DSP auxiliary states

11. Thermal And First Limit

Amplifier temperatures

Load / cable / fuse temperatures

Supply recovery

Delayed heating after stop

First limiting mechanism

12. Evidence And Uncertainty

Raw file identifiers

Instrument calibration

Runs and variation

Dominant uncertainty

Supported significant figures

Known limitations

Stop Conditions

Abort for unexpected heat, odor, smoke, arcing, loose connection, sensor overload, unstable supply, clipping outside the endpoint, mechanical noise, load-bank fault, protection, communication loss, or zone entry.

Emergency stop tested

Zero voltage confirmed

Safe temperature confirmed

Approval

Result classification

Pass / fail / limited / retest

Regression trigger

Technical approval

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