Rythmik L12: how to set phase and volume? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 17 Old 10-21-2019, 09:47 PM - Thread Starter
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Rythmik L12: how to set phase and volume?

I am planning to get Rythmik L12 around thanks giving or Christmas. I only recently getting into avr, and I don't know much about setting. My current sub is Klipsch k100-sw. K100 has a phase switch, i just switched it to set the phase that sound good. For Rythmik, it is continuous, i want to calculate it set it other than adjust it and set it by ears.

I read the Rythmik manual, but i don't understand much of it. For example, the Rythmik says: the volume level setting is determined by the efficiency of the front speakers. My front speakers are Kef Q100, the sensitivity is 86db, what should i set it to?

Thanks for your times
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post #2 of 17 Old 10-22-2019, 08:24 AM
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Generally-speaking:
1. On the sub, set the gain (volume) on the sub to "noon", set the phase to 0° (or 180°) and disable the LPF ("crossover") by maxing out the control or by flipping a bypass switch.
2. Run your AVR's auto-cal (Audyssey, YPAO, etc.).
3. Check the resulting settings in the AVR's speaker set-up menu.
4. Make changes on the sub (raise/lower gain, adjust phase) if/as required.
5. Repeat steps 2-4 if/as required.
6. In the AVR, set all speakers to "small" and the crossover settings to 80Hz.
7. Tweak (levels, crossover settings, DEQ, etc.) to taste.

Last edited by eljaycanuck; 10-22-2019 at 08:28 AM.
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post #3 of 17 Old 10-22-2019, 12:47 PM - Thread Starter
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Quote:
Originally Posted by eljaycanuck View Post
Generally-speaking:
1. On the sub, set the gain (volume) on the sub to "noon", set the phase to 0° (or 180°) and disable the LPF ("crossover") by maxing out the control or by flipping a bypass switch.
2. Run your AVR's auto-cal (Audyssey, YPAO, etc.).
3. Check the resulting settings in the AVR's speaker set-up menu.
4. Make changes on the sub (raise/lower gain, adjust phase) if/as required.
5. Repeat steps 2-4 if/as required.
6. In the AVR, set all speakers to "small" and the crossover settings to 80Hz.
7. Tweak (levels, crossover settings, DEQ, etc.) to taste.
Thanks for your reply, Eljaycanuck.

Suppose if i set the phase of the sub to somewhere between 0 or 180 degree, should i set the phase of my AVR to normal or reverse?

Rather than repeat 2-4, is there a way to calculate the phase setting by the speakers and sub positions?

thanks again.
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post #4 of 17 Old 10-22-2019, 12:52 PM
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Your AVR's auto-cal should handle phase so setting it to 0° on the sub is often the start and end of that dilemma.

Which leaves you free to:
- place your speakers (and, say, experiment with separation and toe-in); then,
- find the couple or three best* locations for your sub and place it in one of those spots; and then
- run your AVR's auto-cal, etc.
______________________
(*Best overall FR at and across the main listening position.)
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post #5 of 17 Old 10-22-2019, 03:24 PM - Thread Starter
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Quote:
Originally Posted by eljaycanuck View Post
Your AVR's auto-cal should handle phase so setting it to 0° on the sub is often the start and end of that dilemma.

Which leaves you free to:
- place your speakers (and, say, experiment with separation and toe-in); then,
- find the couple or three best* locations for your sub and place it in one of those spots; and then
- run your AVR's auto-cal, etc.
______________________
(*Best overall FR at and across the main listening position.)
Thanks for your devices, eljaycanuck.

I will wait until Christmas to find out how it will go, at least now I know the steps to take.

Thanks
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post #6 of 17 Old 10-22-2019, 03:26 PM - Thread Starter
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What do you think about L12? Is it a good sub?
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post #7 of 17 Old 10-22-2019, 04:10 PM
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The L12 is a well-rated sub (from a reputable company) for the money, and it should be noticeably better than your current sub.
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post #8 of 17 Old 10-22-2019, 08:53 PM - Thread Starter
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Quote:
Originally Posted by eljaycanuck View Post
The L12 is a well-rated sub (from a reputable company) for the money, and it should be noticeably better than your current sub.
Thanks, Eljaycanuck.
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post #9 of 17 Old 10-23-2019, 03:22 PM - Thread Starter
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One of things I don't understand is what are PEQ for? How did PEQ tackles room modes? I can't locate the separate application note, can i find it on the web? Or it comes with the L12?

After calibrated my speakers with YPAO, do i have to subtract 0.5m from distance setting of sub?

Thanks

Last edited by Nickme; 10-23-2019 at 03:54 PM.
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post #10 of 17 Old 10-24-2019, 06:15 AM
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Quote:
Originally Posted by Nickme
One of things I don't understand is what are PEQ for? …
PEQ (which is built into Rythmik's amps) allows you to tweak the sub's output at/across certain frequencies in order:
- to tame a peak (recommended); or
- to try to boost a null (not recommended).

This page on Rythmik's website explains it pretty clearly (IMO).

Once you've set up the sub and run YPAO:
1. Use a UMIK-1 mic + free REW (or the more-expensive but all-in-one OmniMic) to measure your sub's FR at the MLP.
2. Use PEQ if/as required to make adjustments.
3. Re-run YPAO.
4. Repeat steps 1-3 if/as required.

Quote:
… After calibrated my speakers with YPAO, do i have to subtract 0.5m from distance setting of sub? …
YPAO determined the distance settings to keep all speakers + sub in phase. You shouldn't have to change the distance setting of the sub.

Last edited by eljaycanuck; 10-24-2019 at 07:54 AM.
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post #11 of 17 Old 10-24-2019, 10:22 AM - Thread Starter
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Hi eljaycanuck.

According to L12's website (Subwoofer phase alignment: http://www.rythmikaudio.com/phase3.html), it spelled out the calculation of the phase setting (unfortunately, it did not how to set the phase setting) indicated that one should subtract 0.5m from the Receiver's sub distance setting).

thanks
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post #12 of 17 Old 10-24-2019, 10:29 AM
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After you've run YPAO and are satisfied with everything else, go into the AVR speaker's set-up menu and subtract 0.5m from the subwoofer distance. See (hear) how that sounds. If:
- it's better, leave it and enjoy;
- it's worse, add 0.5m back to the distance and enjoy.

Last edited by eljaycanuck; 10-24-2019 at 11:47 AM.
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post #13 of 17 Old 10-24-2019, 11:37 AM - Thread Starter
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hi eljaycanuck,

After I subtracted 0.5 m distance setting on the avr, it does sound better.
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post #14 of 17 Old 10-24-2019, 02:22 PM - Thread Starter
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Quote:
Originally Posted by eljaycanuck View Post
PEQ (which is built into Rythmik's amps) allows you to tweak the sub's output at/across certain frequencies in order:
- to tame a peak (recommended); or
- to try to boost a null (not recommended).

This page on Rythmik's website explains it pretty clearly (IMO).

Once you've set up the sub and run YPAO:
1. Use a UMIK-1 mic + free REW (or the more-expensive but all-in-one OmniMic) to measure your sub's FR at the MLP.
2. Use PEQ if/as required to make adjustments.
3. Re-run YPAO.
4. Repeat steps 1-3 if/as required.


YPAO determined the distance settings to keep all speakers + sub in phase. You shouldn't have to change the distance setting of the sub.
How does PEQ works? Use rew to measure room mode, then set, then set the freq of PEQ to the rew’s result?

Thanks
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post #15 of 17 Old 10-24-2019, 03:16 PM
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Quote:
Originally Posted by Nickme
How does PEQ works? ...
Once you've set up the sub and run YPAO, you use mic+REW (and test tones / signal sweeps) to view the FR in real time on a laptop.

As indicated on the Rythmik website:
- set the Frequency control on the Rythmik amp to the frequency at the center of the most severe peak;
- use the Bandwidth control to determine the range of frequencies (the "width") to be affected by the parametric equalization; and, finally,
- use the Gain control to set the # of dB by which the peak will be "pulled down" (attenuated).

Monitor the FR on your laptop and tweak the controls as required to achieve the best result. Re-run YPAO, check the FR again, make adjustments if necessary, etc.
________________________
(As previously noted, you can also use PEQ to try to boost a null but that's generally not recommended.)

Last edited by eljaycanuck; 10-24-2019 at 06:37 PM.
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post #16 of 17 Old 10-24-2019, 09:07 PM - Thread Starter
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Thank you very much, eljaycanuck.

I have put off using the umik to measure. Because my environment in my room is too noisy. Also bc even if i had the graphs, i still can’t do anything about it (I have speakers limit placement issue)

I can’t wait for black friday to come.
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post #17 of 17 Old 10-24-2019, 09:22 PM - Thread Starter
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I should note that after subtracting 0.5 m from sub distance, I get more bass and the midrange (such as vocal) also better.
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