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Anyone crossing over their subs at 120hz+?

3905 Views 17 Replies 14 Participants Last post by  lennon_68
I was on the phone with a very reputable company the other day asking questions about one of their subs. The guy recommended crossing over my sub and main left and righ speakers to 150hz. My receiver only goes up to 120hz for my sub so I set it at that. I kind of like what I am hearing. Anyone else do this?
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Heck no... but I have tower speakers that put out decent bass. I think I have my x-over set to 70hz which sounds just right to me for music & TV/movies/games. I tried setting the crossover higher but it sounded really bad and boomy.
if you have a sub next to each main then you can use a higher crossover. if not you'll be able to localize the sub pretty easily above 80hz. even still, if your mains are capable down to 80hz then cross them at 80hz.
I run at 120hz or 150hz. I do have tower speakers (AV123 X-MTM's) but crossing high seems to really clear up the mids. At any rate, try it each way and leave it where it sounds best to you
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Quote:
Originally Posted by lennon_68 /forum/post/16869502


I run at 120hz or 150hz. I do have tower speakers (AV123 X-MTM's) but crossing high seems to really clear up the mids. At any rate, try it each way and leave it where it sounds best to you

I have AV123 Rocket RS850's. I didn't cross them over just the sub at 120, I should try crossing over the towers at 120 too. See what happens.
It depends on the freq range of your speakers. I read somewhere that you should have the sub about 20 higher than the low limit of the speakers. I have the Klipsch Quintet III's. According to Klipsch, the lowest frequency range on them (3.5" woofers) is 120khz. My Pio 1018 receiver has x-over settings at 50, 80, 100, 120, 150, 200. I set mine at 120. There might be a gap in the 120 range but I feel 150 might be too high.


BTW, I use the LFE channel for my sub and therefore I HAVE to control the x-over through the receiver. Otherwise if I wired my speakers through my sub It would allow more fine adjustment via the sub's x-over adjustment knob.

Quote:
Originally Posted by templetun /forum/post/16870327


There might be a gap in the 120 range but I feel 150 might be too high.

I would agree with you on this. If you had larger speakers, I would cross them over higher than their low end, but with smaller satellites, I would only cross them over so high, or you will run into other problems.

Quote:
Originally Posted by JEFFREY GTS /forum/post/16869310


I was on the phone with a very reputable company the other day asking questions about one of their subs. The guy recommended crossing over my sub and main left and righ speakers to 150hz. My receiver only goes up to 120hz for my sub so I set it at that. I kind of like what I am hearing. Anyone else do this?

??????????

Who in the world told you that?


Here's mine:


L/R =50Hz

C =55Hz

Sides=80Hz

Rears=60Hz


Edit: Qualifier---I have very good speakers. The sides roll off pretty quickly at 80Hz, but the others are full range speakers that roll off around 40z.
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I run my xover @ 120hz. 99% of the time I cannot localize the bass from the subs and don't get any annoying voicing from it.


I do run smaller speakers (onkyo htib) that can't dig deep.
about 80hz here, max.


But my dynaudio contour 3.3's will play a very healthy 35hz.

Quote:
Originally Posted by JEFFREY GTS /forum/post/16869310


I was on the phone with a very reputable company the other day asking questions about one of their subs. The guy recommended crossing over my sub and main left and righ speakers to 150hz. My receiver only goes up to 120hz for my sub so I set it at that. I kind of like what I am hearing. Anyone else do this?
Quote:
Originally Posted by JEFFREY GTS /forum/post/16869811


I have AV123 Rocket RS850's. I didn't cross them over just the sub at 120, I should try crossing over the towers at 120 too. See what happens.
Huh?
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I come from the camp that while a speaker may play handily at a lower frequency aqccording to its specifications, it may not suit the system to do that. My mains across the front (twin 6.5" and twin 1" drivers each) will play well down to ~40 Hz or so, but I cross them over at 80Hz currently. If the integration of crossing them over lower works well, then that's one factor, but how well do they play down that low at high volumes? I used to run my mains full range and they integrated well with my subs. Music sounded very smooth and it never seemed bloated. But eventually I ran into problems with louds deeps blasts during movies that my mains running full range couldn't handle, so I no longer run them full range. I also still have some limitations of my main at very high levels even playing down to 80Hz, but will live with that for the time being until I raise the crossover point or get bigger mains. Just my personal experience.
I had some speakers which were full range and they were up to a certain level at which point they started to struggle. The woofers were definitely using up their XMAX, my amp clipped even though it didn't sound like it and took one of my ribbon tweeters with it. I tried some HSU MBMs up front crossed over at 120 and even 150 and it was all welcome. When it sounds good sometimes it's hard to discern that your speakers are in trouble when those peaks come around.
it all depends on the speakers, the amp, and how loud you listen. using a higher crossover can help reduce strain on the amp (that is driving the speakers) which will give you more headroom, or more room to turn the volume up. there are sacrifices to make either way.

Quote:
Originally Posted by JEFFREY GTS /forum/post/16869811


I have AV123 Rocket RS850's. I didn't cross them over just the sub at 120, I should try crossing over the towers at 120 too. See what happens.

Based on this statement, it doesn't sound like you crossed over your speakers at 120 Hz, you raised the LFE's LPF. Which is good as LFE spec's are for the LFE to run up to 120 Hz, but it is not a crossover and really has no bearing on the performance of the main left and right speakers. Your speakers are still outputting the same signal they were before.


If you are noticing more punch on movies, that is because you are allowing your sub to play back those higher frequencies now (as opposed to limiting it to whatever you had previously set).


If you were to try to crossover your mains at a higher frequency you would need to adjust their crossover via setting to small and changing the crossover to the desired point.

Quote:
Originally Posted by Snowmanick /forum/post/16876166


Based on this statement, it doesn't sound like you crossed over your speakers at 120 Hz, you raised the LFE's LPF.

Exactly. Which is why I posted "
" in post#11. No one else picked up on that.


Quote:
Originally Posted by JEFFREY GTS /forum/post/16869310


My receiver only goes up to 120hz for my sub so I set it at that.
Quote:
Originally Posted by JEFFREY GTS /forum/post/16869811


I have AV123 Rocket RS850's. I didn't cross them over just the sub at 120, I should try crossing over the towers at 120 too. See what happens.
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L/R - 60hz

C - 100hz

Surround - 120hz


I get the best mid-bass sound this way, and I get strange sounds on voice-heavy material when my center is crossed below 100hz.

Quote:
Originally Posted by sivadselim /forum/post/16876481


Exactly. Which is why I posted "
" in post#11. No one else picked up on that.

No, I think we saw it... I just wasn't sure how to respond, so I didn't
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