Why do speakers have holes in them called ports and what’s the best way to build a speaker? Ported, sealed, or passive radiator? Gives us his opinion on which construction is best.

There are many types of speaker cable terminations ranging from the bare speaker cable to spade lugs and banana plugs. Do they make a difference in sound quality and if so which are best?

Many audio systems are just mediocre, masking inner details and audible cues that allow the listener to look deeper into the recording. A revealing system is an exact opposite and Paul explains how.

The RIAA curve is a rather dramatic equalization network applied to record albums and 45s over the last half-century. Why is it there, what does it do, and when can we expect it to be retired?

Years ago there was a massless tweeter called the Blueflame and it was an incredible sounding high-frequency driver. Whatever happened to that tweeter and the Hill Pasmatronic speakers?

Double conversion UPS are AC regenerators like the Power Plant, so why not save money and use one of those instead of a more expensive device from PS Audio? Paul gives us a quick lesson in power factor and Class D amplifiers.

There are many multi-room wireless products to choose from but which one is best? Paul takes us through the list and explains how to get the best sounding and easiest setup for wireless audio.

Rumor has it that connecting the powerful output of the main power amplifier to the sensitive input of a subwoofer can cause damage. Is there any truth to this and what precautions should you take?

Musical instruments rely on their wooden bodies for the resonance that gives them their particular sonic characteristics. So why shouldn’t wooden speaker cabinets act in the same way as the musical instruments they want to emulate?

After 20 years of faithful service, this viewer wants to know if he should replace the capacitors in his equipment and what to look for in new ones. Paul gives us some insights into when it’s a good time to switch and what to replace them with.