Practical
Applies basic knowledge to choosing, setup, diagnosis or care.
Articles tagged Practical
Why do speakers hum, buzz or hiss? Safe checks
Hum, buzz and hiss describe different listening impressions, but none identifies a faulty component by itself. Record when the noise occurs, then change one supported external signal connection at a time. Keep protective grounding intact and use the results to narrow the affected path, rather than treating a temporary improvement as proof of a repair.
How to connect a TV to a stereo amplifier
Match a documented TV audio output to a compatible amplifier input, then check the audio format and volume controls. HDMI ARC or eARC, optical and analog outputs offer different routes. A working cable is only part of the setup: the selected TV output, amplifier source and app settings must agree too.
How to connect a subwoofer to a stereo amplifier
Choose the connection from the documented outputs on your amplifier and inputs on your powered subwoofer. A dedicated sub output, variable stereo pre-out and compatible high-level input are different routes. Check volume tracking, filtering and any amplifier grounding restrictions before wiring; a matching connector or terminal colour does not establish compatibility.
Subwoofer crossover, phase and level: a setup guide
Integrating a subwoofer means making its output work with the main speakers and the listening area. Establish which device supplies each filter, then adjust placement, overlap, level and phase or polarity with a repeatable process. Keep a settings log so you can compare changes and restore the starting point instead of chasing the loudest bass.
Do you need a separate headphone amplifier?
A separate headphone amplifier is useful when it solves an identified limitation in the existing output, such as insufficient usable level, unsuitable noise performance or a missing connection. Impedance alone does not decide the question. Compare headphone sensitivity with its reference units, the source’s output under the relevant load, and the volume-control range you can actually use.
Turntable tracking force: identify, set and verify
Set tracking force from the specifications of the cartridge and stylus actually fitted, using the tonearm’s own procedure. Balancing the arm, zeroing an indicator and applying force are different operations. Anti-skate is a separate adjustment. Do not copy a universal number, assume a replacement cartridge uses the original setting, or treat the dial as an independent measurement.