- Thread Starter
- #81
No F8 or FM8, however, and I think they are going to be dropping those IIRC
I'll check with them on this. If true, I suppose I'd better get on with ordering them soon.
No F8 or FM8, however, and I think they are going to be dropping those IIRC
Quick OT question, trying to help a long distance friend with a base sub setup.
He has Revel F208s and will be mating to a Rhythmic E15. He has a Parasound Halo P5 that has built in crossover with adjustable low and high pass filters. Where do you think a good starting point would be for the X-over freq?
Revel Low Frequency Extension -10dB@23Hz, -6dB@27 Hz, -3dB@31Hz
TIA
FWIWFM I have a number of Rythmik subs in the house. I like 'em and Brian (Ding) and I have similar day jobs so I am biased. No F8 or FM8, however, and I think they are going to be dropping those IIRC (haven't spoken to Brian in a while). The FM8 is designed as a midbass driver with higher crossover and broader feedback bandwidth (all Rythmik subs are servo controlled, one reason I gravitated to them, since my first sub was a DIY servo based on similar principles ages ago).
Thanks Don!The Dolby/THX default is 80 Hz as that's where most folk cannot localize the bass. Given that crossovers are not brick-wall filters that instantaneously cut off I prefer to set the crossover an octave away from the speaker's -3 dB point. That would be 62 Hz. Floyd and Kevin at Revel both state to use 80 Hz as well so I would start there and go no lower than 60 Hz. Depending upon the room and placement a little higher or lower may provide better response.
FWIWFM - Don
A microphone.
Keith
Sure but I wanted to know if there is a well-established process. Given the room's response is not flat, how do I calibrate if I am playing a frequency sweep tone?
Two FM8s should be arriving this Friday. Usually when I dial in a subwoofer, I adjust the volume by ear. Now with the FM8s, I will likely use them for 50Hz-250Hz and fill in the bottom end with my REL. Is there a more reliable way to get the volumes on everything dialed in than just using my ears?.
And one of the disadvantages of most if that they cannot be dialed in other than by moving them about, you have way more control.I just realized one advantage of a single-cabinet large loudspeaker is that one doesn't have to worry about level matching.
They have their limitations when compared to using multiple subs-locations.The reason I am such a big fan of completely full range loudspeakers!
Keith
FWIWFM ...
We were discussing sub-woofers remember.No. You can still use other subs destructively, to have full range loudspeakers like the 8Cs already puts you ahead of the game .
Keith
Yea OK, your right. NOTThey have to go below the threshold of audability for you to call them a ‘deep bass’ speaker don’t be silly.
Keith