I have done a little digging and found that it isnt an urban myth. I contacted B&W to ask about the CD with setting tones on and I received a impressively quick reply as follows
Many thanks for your email enquiry regarding obtaining a CD with test tones.
Sadly we no longer have supplies of that CD. Your AV receiver or processor would suffice in providing test tones to calibrate levels.
The recommended settings for the MT-30 are, to set all your M-1 satellites as small via your processor/receiver with a crossover of 80Hz, with the PV1 subwoofer connected via the RCA (phono) lead to your processor for the sub out or LFE (do not use the supplied RJ45 lead - this is for 2 channel stereo systems only), you need to set the subwoofer crossover in the processor to 80Hz, you needn't touch the rolloff setting on the subwoofer as this only comes into play with the high level input for 2 channel set-ups only. This will allow the PV1 to produce the frequencies from approx 20Hz upto 80Hz, the M-1's will reproduce from 80Hz upto infinity.
By setting the system up in this way, you are using the entire usable frequency range of the M-1's without placing too much of a demand on them, or the amplification.
Adjust the volume for the subwoofer as necessary for a seamless integration with the M-1's, the subwoofer should not draw attention to itself during playback, it is worth experimenting with various music/film types with a steady bass track to ascertain the optimum volume, the phase switch will be correctly set in the position that gives the fullest bass response.
A properly set-up subwoofer will integrate with your M-1's and not drone on continuously, only lending a hand when it is necessary, such as special effects in films or the lower octave of music tracks. It may take time to set up, however you will be rewarded with a depth and scale to soundtracks.
A poorly set-up subwoofer will tend to draw attention to itself, cause boom, and make everything seem too "full".
Yours sincerely
Stephen Wheatley
Product Support - UK Sales
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