Page updated: 18 Nov 2017

To err is human...

ERRATA

• Chapter 4 p81: 1st column 2nd para last sentence: To clarify, this means that if the preamp has a maximum gain of unity, if overload occurs there it will also occur in an external phono amp at the same level, assuming the rails are the same.
• Chapter 5 p89: R5 in Fig 5.3c should be labelled R4.
• Chapter 5 p93: 2nd column 2nd sentence "collector" should be "connecting".
• Chapter 5 p93: Reference 5 should be to the Elektor 2012 preamp. See ref 13 at the end of Chapter 1.
• Chapter 7 p113: 1st column 2nd sentence should read: "The configurations can be differently arranged, as if two components are in series, with nothing connected to their junction point, it does not matter in which order they occur."

AFTERTHOUGHTS

It it inevitable that by the time a book gets published you think of stuff you wish you had put in.

• I rather wish that in Chapter 6 (Signals from Vinyl) I had pointed out forcefully that record platters that weigh tens of kilograms are utterly pointless. Vinyl signals are degraded by wow (because the central hole is not in its mathematically perfect position) and flutter (because the cartridge bounces up and down so the stylus moves back and forth in the groove) even on the most perfect of platters. Massive weight will therefore gain you nothingm and complicates the bearing design. A few weighty examples:
  • Continuum labs Caliburn turntable platter: 84 pounds (38 kg)
  • Clearaudio Statement turntable: 770 pounds (349 kg) total, but not clear how much is platter.
  • Galibier platter: A lightweight at 42 pounds (19 kg) but interestingly it is filled with oil and lead shot.

My apologies for these shortcomings. The mistakes are mine and not my publisher's.

Mea maxima culpa

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