When m3=M6, you have a just 6:3 octave. So, yes, they should beat the same for that octave type.<br><br>Now, I'd have to check my <span style="font-style: italic;">On Pitch</span> book b/c I don't recall offhand...but I think the lower you go, you also start hearing some of the partials above the 6:3. Therefore, it gets kind of hard to hear in the lower bass. I generally hear all kinds of junk noise on these low octaves, and have to listen carefully to filter it out. However, you can also use a different test to check the 6:3. <br><br>OK, just looked in the book, and another 6:3 test is the P12-P5. When they beat the same, it is a just 6:3 octave.<br><br>Hope this helps. Maybe someone else will chime in here. I feel like this is only a partial answer. (Sorry for that <g>.) <br><br>JF<br><br>P.S. Another good bass check is the octave + a minor 7th. This is used to check for even progression. Example: C2-Bb3, then descend by half steps. Keeps you in the ball park.<br><br><br><div><span class="gmail_quote"> On 3/19/07, <b class="gmail_sendername">daniel carlton</b> <<a href="mailto:hacicspe@gmail.com">hacicspe@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div>hi all</div> <div>i'm wanting to take the RPT tests within the next few months. i usually use the baldassin-sanderson temperment. i get my major 3rds running pretty smoothly, but i also try to get my 4ths and 5ths sounding close to the same. below the temperment, i usually try to get quiet 12ths and, again, good 4ths and 5ths, but i've noticed (even though i've got a good temperment) that when i use the minor 3rd-Major 6th test to get 6:3 octaves, the 3rd and 6th don't beat the same speed. aren't they supposed to sound the same to get a good 6:3? </div> <div> </div> <div>thanks</div><span class="sg"> <div> </div> <div>daniel</div> </span></blockquote></div><br>