Crossover doubts of speakers and subwoofer

[Daniel Barros Contente]

Hi, I'm sorry for my English, but I'm from Brazil. I'm in doubt about the crossover and equalization. I have a receiver Onkyo TX NR757 and speakers model SKS-HT993THX in the receiver's manual, so I can set the subwoofer and all the speakers in 80HZ should do this or set the Sub in 80HZ and the speaker setar a higher value 90 or 100Hz ??? As for the equalizer should I equalize the subwoofer or just the speakers ?? The volume of the subwoofer for being THX has a recommended level should I leave in the recommended or increase a little more (when running the AccuEQ it auemtno the volume of the Subwoofer to + 5.5DB), thank you already if you can help me !!

 

[lovinthehd]

There's only a single crossover frequency to set between a speaker and the sub. You may be looking at a separate setting for the LPF of the LFE channel when you refer to a separate setting for the subwoofer; this only affects the low pass filter used for content that has the LFE channel (the .1 channel in movies for example) and the normal setting is 120hz for that.
The various settings are discussed on page 42 of the advanced manual I just downloaded (at least the English version).

As far as your avr setting your sub level in the positive range that just indicates the gain setting on the subwoofer's amp is a bit low; you can raise the gain level and re-run the AccuEQ again for a lower setting. Probably no harm at 5.5+ but I like to have the settings in the negative range to allow for boosting/headroom.

 

[Daniel Barros Contente]

There's only a single crossover frequency to set between a speaker and the sub. You may be looking at a separate setting for the LPF of the LFE channel when you refer to a separate setting for the subwoofer; this only affects the low pass filter used for content that has the LFE channel (the .1 channel in movies for example) and the normal setting is 120hz for that.
The various settings are discussed on page 42 of the advanced manual I just downloaded (at least the English version).

As far as your avr setting your sub level in the positive range that just indicates the gain setting on the subwoofer's amp is a bit low; you can raise the gain level and re-run the AccuEQ again for a lower setting. Probably no harm at 5.5+ but I like to have the settings in the negative range to allow for boosting/headroom.

So my receiver has crossover for all the speakers and also for the subwoofer! I can set them to large and choose from 40hz to 200hz if you're not mistaken.

 

[lovinthehd]

So my receiver has crossover for all the speakers and also for the subwoofer! I can set them to large and choose from 40hz to 200hz if you're not mistaken.

No, you have crossovers to set between various speakers and the sub (a crossover is a combination of a low pass filter for the sub and a high pass filter for the speaker), the LPF of LFE is simply a way to limit content on the LFE channel but normally it is mixed up to 120hz, so that's the usual setting for LPF of LFE. If you set a speaker to large you no longer have a crossover for that speaker (setting speakers to large simply means to bypass bass management), as that means you will run the speaker full range (no high pass filter).

 

[Daniel Barros Contente]

No, you have crossovers to set between various speakers and the sub (a crossover is a combination of a low pass filter for the sub and a high pass filter for the speaker), the LPF of LFE is simply a way to limit content on the LFE channel but normally it is mixed up to 120hz, so that's the usual setting for LPF of LFE. If you set a speaker to large you no longer have a crossover for that speaker (setting speakers to large simply means to bypass bass management), as that means you will run the speaker full range (no high pass filter).

For the speakers what frequency should I use the ones that THX recommends for my cassettes will be certified by THX or should I increase it from 80hz to 100hz 120hz?!? My speaker are SKS HT993THX Onkyo

 

[lovinthehd]

80hz is the common recommendation and an excellent starting point and looks fine from the little spec I see on those speakers. Try it at 80 for a while then perhaps at 60 or 100 after that---it's mostly about preference and not being able to localize the sub....

 

[Pogre]

For the speakers what frequency should I use the ones that THX recommends for my cassettes will be certified by THX or should I increase it from 80hz to 100hz 120hz?!? My speaker are SKS HT993THX Onkyo

I do believe 80hz is the recommended crossover, yes. It's the one I use. What HD is saying is that if you set your speakers to large, you're bypassing the crossovers. I would set them to small, crossover to 80 for all your speakers, then give a listen and see how you like it.

Edit: He beat me to it!

 

[Daniel Barros Contente]

I feel like I'm missing a little more bass in the voice and right and left speakers, what should I do to increase the bass for those speakers a heavier sound! I left the speakers and the subwoofer at 80Hz the sound of the subwoofer is fantastic with more impact than I had on my old receiver but I miss this bass on the other speakers that I tinah on my old receiver Onkyo HT9300 THX remembering that the new is the Onkyo TX NR757. Sorry for my horrible English but I'm Brazilian and I'm doing my best !!
Thanks for the help guys!!!

 

[lovinthehd]

No worries, you're doing fine with English; your English is far better than my non-existent Portuguese! Many simply raise the sub level in the avr after setup with a room eq program for a bit of boost on the low end; do you have an equalizer to adjust with (my old Onkyo has Audyssey XT so not familiar with AccuEQ) Does AccuEQ have some sort of dynamic eq for to adjust for our hearing tendencies at lower playback levels?

 

[Daniel Barros Contente]

In the cut of the crossover for the speakers if I put in 80Hz this means that the speakers played frequencies above 80Hz, 80Hz, 90Hz, 100Hz etc. and for the sub it would be the reverse if I set it at 80Hz it would play frequencies from 80Hz to 20Hz, Side frequencies such as 100Hz and 120Hz ??

 

[Daniel Barros Contente]

No worries, you're doing fine with English; your English is far better than my non-existent Portuguese! Many simply raise the sub level in the avr after setup with a room eq program for a bit of boost on the low end; do you have an equalizer to adjust with (my old Onkyo has Audyssey XT so not familiar with AccuEQ) Does AccuEQ have some sort of dynamic eq for to adjust for our hearing tendencies at lower playback levels?

He only makes a sound adjustment in the room he does not have that dynamic EQ my old Onkyo had I'll send you the Accueq link
http://accueq.onkyousa.com/



It has an EQ manual that goes from frequencies of 25hz ate 15kHz one for each speaker and has an EQ for the subwoofer as well

 

[Pogre]

In the cut of the crossover for the speakers if I put in 80Hz this means that the speakers played frequencies above 80Hz, 80Hz, 90Hz, 100Hz etc. and for the sub it would be the reverse if I set it at 80Hz it would play frequencies from 80Hz to 20Hz, Side frequencies such as 100Hz and 120Hz ??

Yes. You got it, but only if the speakers are set to small.

I'm not too good with manually tweaking equalizers, but I do usually bump the subwoofer level up about 3 db after running the setup. A lot of folks do.

 

[lovinthehd]

In the cut of the crossover for the speakers if I put in 80Hz this means that the speakers played frequencies above 80Hz, 80Hz, 90Hz, 100Hz etc. and for the sub it would be the reverse if I set it at 80Hz it would play frequencies from 80Hz to 20Hz, Side frequencies such as 100Hz and 120Hz ??

80 hz represents the point at which the two filters cross, it is not a brick wall; at 80hz your speakers will still have content below 80hz and your sub will have content above 80hz according to the roll-off slopes of the filters employed. Sometimes helps to picture this:

 

[Daniel Barros Contente]

I changed the equalization a bit, it seems to have improved, the equalization of the subwoofer goes from 25hz 40hz 63hz 100hz and 120hz, I increased the high frequencies of 120Hz 100Hz and 63Hz and the low frequencies are only slightly 1.5db on a scale that varies Of - 6db to + 6db already the high frequencies to the maximum that I put was 4,5db and I was diminishing a little between one and another! I thought that doing this would compensate for the frequencies that the speakers would have to achieve and altered the equalization of the speakers as well.

If anyone knows a tip of a better equalization or tips on how to equalize, because I am very lay and do not understand anything.

 

[Daniel Barros Contente]

This is the equalizer on my receiver.

 

[Pogre]

I wouldn't mess with the crossovers unless you have a measuring mic and program to help. Did you try running AccuEQ? That should give you a good baseline. Sometimes (most times) the room correction will set your speakers to large. Just go in and change them back to small and set your crossover after running it.

 

[Daniel Barros Contente]

I wouldn't mess with the crossovers unless you have a measuring mic and program to help. Did you try running AccuEQ? That should give you a good baseline. Sometimes (most times) the room correction will set your speakers to large. Just go in and change them back to small and set your crossover after running it.

Yes I already did it it changes the crossover and I changed it to 80Hz as my boxes are certified by THX and it is recommended by them but I still feel that the audio seems to come out of a very cheap battery radio especially the voices !! For example the voice of Smaug does not have a lack of bass in the speakers the voice comes out say weakly bland

 

[Pogre]

That could just be your speakers. A lot of those home theater in a box packages skimp on the speakers. Your receiver isn't bad though.

 

[Daniel Barros Contente]

In a forum in Brazil I was told that these speakers are difficult to play because their Sensitivity 83 dB / W / m for front (L and R) and center and 81dB / W / m for surround and surround back may be the fact that I feel this lack of bass ?? Is it any problem for me to use them on the Onkyo TX NR757 ??