Locating HT Sub near the seating position?

[Ludo]

Can someone comment on whether there are any issues in locating an HT sub near the seating position? I understand there might be room standing wave problems, or midrange leakage if the x-ver frequency is too high or the x-over slope is inadequate, and then there is port noise to consider.

Are there any other potential problems?

Has someone tried this and would it work reasonably well with a 4th order, 100Hz x-over?

Louis

[Fred T]

The biggest problem might be localization.Using the 4th order lowpass is wise but the 100hz might be a bit on the hi side.Having variable phase control will be a big advantage as well.

Placing in the near field of the listener away from room boundries should/may reduce the influence of room modes.

[philiparcario]

this sub is an IB right behind the couch it runs from 18hz to 50hz. the earth moves with it or at least the couch. Just watched hell boy II on fri. it is the dayton rss390hf-4 sub.

[philiparcario]

the reason why the IB sub works is I have a pair of 12 inch subs running from 50hz to 100hz. see thumbnails all xovers are 24db

[philiparcario]

two of these as speaker stands

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=295-185

plus this as an ib


http://www.parts-express.com/pe/showdetl.cfm?Partnumber=295-190

come to about 430 in drivers with two of these amps

http://www.mcmelectronics.com/product/50-4630

400 dollars total 830 1 more item is needed

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=248-669 300 dollars.


that is a grand total of 1130 dollars about 100 to 200 in building materials. what do you get a sub system that will play from 20hz to 100hz with almost no distortion. and lots of ways to control the volume of it. plus with the 1 subs as an ib you get a greatbass shaker for the couch. carefull shopping will save some money.

[billfitzmaurice]

Can someone comment on whether there are any issues in locating an HT sub near the seating position? Mine's located 16 inches behind my chair, and no issues at all, though every room and speaker will have a different result. If anything having it so close to my chair enables me to run it as high as I like it whilst not bothering SWMBO with more than her tender sensitivities will bear. :rolleyes:

[Ludo]

Thanks to everyone for their responses and the examples of actual working systems. Glad to hear that this really works well in practice; my experience with HT is minimal and you can't always believe what you read.

The only space I have for a sub in my living room is behind the sofa. I measured the sound absorption of the couch and it is nill below 200Hz with a gradual roll-off above that.

My biggest concern was being able to hear residual midrange from the sub but it sounds like that really isn't a serious issue and may even get masked by the rear surrounds.

Louis