Press Releases and Spec Sheets

Audio manufacturers issue new product announcements constantly, and they know exactly which words will make their equipment sound impressive. “Frequency response 20Hz–20kHz” and “high-fidelity reproduction” mean almost nothing without context. The key is learning to read what’s actually written, what’s conspicuously absent, and what it all means in practice.

A spec sheet is a promise backed by measurement. But it’s a selective promise—manufacturers highlight what makes them look good and hide what doesn’t. Learning to spot what’s missing is half the skill.

The local audio market depends on informed buyers. If you’re considering new or used equipment, whether it’s speakers, amplifiers, or a home theater installation, you need to know how to separate meaningful specs from marketing puffery.

This guide walks you through the numbers that matter and the gaps manufacturers hope you won’t notice.

Four numbers a spec sheet should give you

  • Frequency Response Must Have Tolerance

    “20Hz–20kHz” alone is meaningless. You need the dB range: ±3dB, ±5dB, ±10dB? The tolerance tells you whether the speaker plays flat or if it boosts bass and treble to sound impressive in a showroom.

  • Sensitivity Tells You How Hard to Drive It

    An 87dB/W/m speaker needs more amplifier power than a 92dB/W/m speaker to play at the same volume. Sensitivity matters more than wattage for how loud something will actually get in your room.

  • Impedance Determines Your Amplifier Requirements

    A 4-ohm speaker pulls harder on an amplifier than an 8-ohm speaker. Know your amplifier’s stable impedance before you buy. Mismatch is how speakers damage amplifiers or amplifiers damage speakers.

  • Power Rating Depends on Time Duration

    Peak power, RMS power, continuous power—all different numbers. A spec sheet that doesn’t specify which one is hiding something. Continuous power is the only one that matters for real-world use.

Theater room with surround sound audio system installed
Professionally designed comfortable home listening area with properly positioned speakers and acoustic treatment

What a spec sheet leaves out

What’s missing from a spec sheet is just as important as what’s there. If there’s no mention of impedance curve, the impedance probably changes wildly across frequencies. If there’s no power rating, it might be because continuous power is embarrassingly low.

Measured frequency response curves are better than ranges. Distortion figures are better than no distortion figures. Phase response matters but is almost never listed. Group delay matters for subwoofers specifically.

Beware of relative claims like “articulate highs” or “tight bass.” These are subjective descriptions, not measurements. Manufacturers use them when measurements would tell a different story.

Ask yourself: what numbers would make this equipment look bad? Those are the numbers unlikely to appear in the press release.

Learning to read specs critically takes practice. Start by comparing how different manufacturers describe the same type of equipment. The gaps and gaps become obvious when you see them side by side.

The best source for real data is third-party measurement labs, independent reviewers, and users who’ve actually lived with the equipment. Trust numbers measured by people with no stake in the sale more than numbers provided by the manufacturer themselves.