Last time we cut mono test tones and found out how big a difference a little bit of level can make on the duration of an LP side.
So let’s now look at a typical rock program. For our example this music is compressed — something like a classic Rolling Stones record — but not peak limited like a typical radio rock hit of today.
The grooves for this cut wiggle back and forth and up and down. That is how a stereo disk works. The more stereo the mix is (for example, guitars and drums panned to the sides) the deeper the groove is. A deeper cut is also wider — check your geometry lessons from middle school.
Does anyone know what the word “analog” means? The signal and the groove is an analog of the original audio, i.e. the groove and signal are analogous. (I should not try to use such big words.) But louder alone does not determine how much space the grooves take up on the disk. The character of the program, how loud, how soft, how much bass and how much stereo all contribute to the picture. Bass has the biggest overall impact on duration.
So when measuring the grooves to see if they will fit on a side, the cutting engineer has to consider the bass, the peak level, the average level and the duration of the music. Every change you make to the music is a compromise, so deciding how much bass, how much level and how much compression has to be decided by ear and with experience.
Why do records that come from one studio sound better? One simple reason is the engineer, and how much they care.
The sad truth is, a typical engineer hears the music and says, “Oh it’s kind of bright, lets roll of the top; they probably won’t notice… and wow, they put a lot of bass in the mix too so we had better roll that off too! And wait a second, the floor tom is panned all the way to the side and that means we have to put in a low frequency EQ called an Elliptical to partially mono the bass.” You can certainly expect this record to sound weak, limp and dull. I don’t even like my breakfast cereal that way.
What if that same music could be cut and fit, in full frequency range, with the bass intact and the floor tom where it belongs — but just lower the level 1db. Only a patient, determined and experienced disk cutting engineer, who is compensated for his or her time, will push that cut, take the right chances and make an amazing record. But what about the compromises?
I cut a recent John McLaughlin album, “Now Here This,” for the Abstract Logix label. It would have sounded awful if the bottom end had been rolled off. It was in-your-face with bass and that was how the artist wanted it. So to fit the music on the side, the level had to be reduced. Not a lot, just a db – but in this case, with a quiet pressing, there was no creative damage done to the music. This is the caring part.
I recently cut a very demanding Glen Frey record, “After Hours,” with my young ace cutter Alex DeTurk assisting. We cut many refs and compared the playback to the tape master — that’s right I said “analog tape master.” It IS very cool to cut an analog record from an analog tape through an analog console! The original Elliot Scheiner-mixed 2 track analog was beautiful. I was tasked with making the record sound exactly the same as the analog tape. They wanted full range, no filters, almost no de-essing, and NO digital or analog processing of any kind. Well, let me say it wasn’t easy. But I’m super proud that Michael Fremmer’s review claimed it to be a 10 of 10 for sound. (link ) It only took experience, determination, and patience. Just like anything worth doing well.