<html> At 11:41 PM 3/18/2002 -0500, you wrote:beyond A4 in order to not have dissonant single octaves higher on up.  In the bass, I balance 4ths, 5ths and octaves and test for equal beating intervals where I can.  For the sub and 1st octave, I balance the double octave and double octave 5th to get the most pleasant resonance. <br> <br> A test I use for the lowest half-octave consists of a five note voicing and holding these notes with the sostenuto<br> and hit the tonic in the bass. I, IV in octave 3; I, III, VI in octave 4. Sometimes substituting a minor third in the right hand.<br> ie: C,G in oct. 3; C, E, A in oct 4 (sometimes C, Eb, A); hold w/ sos; C1<br> <br> Allow this to decay and you can hear the partials interacting and fine tune the low octave.<br> <br> <div>Regards,</div> <br> <div>Jon Page,   piano technician</div> <div>Harwich Port, Cape Cod, Mass.</div> <div><a href="mailto:jonpage@attbi.com" EUDORA=AUTOURL>mailto:jonpage@attbi.com</a></div> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ </html>