Heavy monitors are prone to damage during transit. Always request the original packaging and insist on full-value insurance.
Use a sine wave sweep from 20 Hz to 20,000 Hz to detect anomalies, buzzing, or voice coil rubbing. buying used studio monitors
Evaluate the owner’s background; equipment from a professional studio environment may have seen heavy use but was likely well-maintained, whereas gear from a pro DJ might have been pushed to its limits regularly. Heavy monitors are prone to damage during transit
Look for chipped corners, separating seams, or cracks, as these can cause air leaks and rattles. 000 Hz to detect anomalies