J. Gordon Holt

How do you rate as an audio expert? Test yourself on these 25 questions.

All of the following are multiple-choice questions, dealing with things that every audio hobbyist should know, either before or after completing the test. Most of them are easy, but take your time in answering and don't jump to conclusions. Some of the questions are quite tricky, and wrong answers will be subtracted from your final score, so read them and the possible answers carefully before committing yourself. Don't guess if you aren't fairly sure.

We're not really sure who coined the term—it is usually attributed to Alistair Cooke, former host of the "Omnibus" TV program—but "audible wallpaper" is an apt term for something that is of more than passing concern for the serious music listener.

The idea of a loudspeaker system whose frequency response could be tailored to suit room acoustics and/or personal taste is one that has always appealed to the high-fidelity perfectionist. Ideally, such a loudspeaker would allow you to raise or lower the level of any part of the audio spectrum to correct for, say, a sharp 370Hz room resonance or a mild absorptive condition that weakens, say, the 800Hz–3kHz range. Obviously, though, this kind of flexibility would require an infinite number of bandpass networks, each with its own volume control—which is an obvious impracticality.

The RS-212 is one of the most impressive-looking tonearms we've seen in many a moon. Our first reaction to it, in fact, was much the same as our reaction to the first big, professional Ampex tape recorder we ever saw: it reminded us of one of those precision-engineered and cleanly styled electronic devices you see in hospitals and industrial laboratories—devices which make no attempt to cater to the current fashion in interior decorating or depth-researched consumer preferences, but which are designed simply to do a job neatly and efficiently. This arm, in short, is practically guaranteed to impress your Magnavox-oriented friends with the quality of your phono system, no matter how oblivious they may be to its actual sound.

Chopin; Nocturnes

Arthur Rubinstein, piano

RCA Victor LSC-7050 (2 LPs) (reissued on CD as RCA Victor Red Seal 0902 663049-2). Max Wilcox, prod.; Tom MacCluskey, Sergio Marcotulli, engs. Recorded August 30–September 2, 1965, 2 February 21, 1967.

If these Nocturnes are never played better than this, we couldn't care less. These are exquisite performances!

The recording, via RCA Victor's Dynagroove process is a far cry from the earlier excesses that gave Dynagroove its horrid reputation among perfectionists. One is simply not aware of the recording at all, as long as it is played at the right volume, which is about what you would hear from a good first-balcony concert-hall seat.

By the time you read this, in the fall of 1967, the "Dolby system" will probably be old hat to you. Every other audio publication has been describing it, discussing it, and hailing it as the greatest invention since sex.

We've seen that kind of press ballyhoo before, about such significant advances as the Edsel, the 16-rpm LP and the "thin-profile" loudspeaker, so our first inclination was to be a wee bit skeptical of the Dolby. It seemed too good to be true.

It is not at all unusual these days to find manufacturers producing "matched" speakers and amplifiers that are designed specifically for one another. But it is very unusual to find this being done by an amplifier manufacturer who doesn't make loudspeakers. The Futterman H3-A is one of these rarities—an amplifier designed primarily to complement one of the best, and one of the hardest-to-drive loudspeakers on the market: the KLH Model Nine.