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Post by r1lee on Feb 25, 2012 10:22:43 GMT -5
Owning a xref12, a pb13-utra and a submersive, I will tell you that the Xref does very well. I personally think it's a bit overpriced, but if you can get one used or on a sale it's quite a good sub. Midrange base is phenomenal for music and movies. Now thunderous bass for HT can be very subjective, in the sense of what frequency are you preferring.
I bought a pb13-ultra and it gets down very low. Basically shaking the foundation of my house, but it ended up losing some of it's punch in the midrange. I sealed the sub and have lost the very low (16hz) effect, but gain back all the midrange punch I was missing. I preferred this setup and to me, that is thunderous bass. Where it hits you in the chest.
Your other choices of sealed sub would be the sb12 and sb13. Empire Epik has a fantastic midrange punch.
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Post by Deleted on Feb 26, 2012 5:00:34 GMT -5
AJ, IMO the boominess can come from mainly two issues. One is running the main speakers as full range. In that case the lower bass below 80Hz comes from both the sub and the towers. This is why many recommend the THX theory and cut the mains off below 80Hz and the sub off above 80Hz. Again, I'm not that familiar with the UMC-1. Just make sure it is set so that the sub handles the bass from 80Hz and down (which is redirected to the sub from the mains) including the LFE track which is the special .1 track ( as in 5.1, the low frequency effects track) in the movie sound track. If you are confused how to set the cross overs for the UMC-1 call Emo and have them explain it to you. I understand that the LFE and redirected bass issues might be slightly confusing on the Emo sub settings. The other option it to carefully read the owner's manual or look to Audioholics.com for bass management articles. The second issue is where the sub is located in your room. This can vary from room to room. Note, I recommended keeping the sub maybe 3-12 inches away from the wall or corner if possible. The corner position will tend to make the bass louder but also tend to make it more boomy. Again it all depends on your room, so you won't know until you try placing the sub. Be prepared to move the sub around until you are happy with the results. the placement I mentioned is only a suggestion for a start.Based on your comments about 2 subs being about 2X the cost of one then I myself would go for a single X-Ref 12 sub to start and later add a second X-Ref 12 sub or X-Ref 10 sub as you think is needed.Be sure you also Google as much as possible on how to place a sub in your room including the "sub crawl method." www.audioholics.com/tweaks/speaker-setup-guidelines/crawling-for-bass-subwoofer-placementwww.audioholics.com/tweaks/get-good-bass/subwoofer-placement-the-place-for-bass-part-1PS: Your 683's do not go as low as the specs indicate, most likely they are about 2-3dB's down at 45-48Hz (tested at almost 4dB down at 41Hz). Do not set the crossover at 50 or 60 Hz. 80Hz is best and no lower than 70Hz IMO. BTW, the B&W's you have are about 6 ohms and fairly low in efficiency at about 86dB's (tested). I can't remember if you mentioned your amp but I hope you have an XPA-5 to drive those speakers (no it is not overkill!).
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Post by ajimon on Feb 26, 2012 7:33:12 GMT -5
Thank you all, especially Chuck I will order X-Ref12 today. Will post my findings as soon as the sub breaks in. AJ.
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Post by Deleted on Feb 27, 2012 0:59:57 GMT -5
Hope it works out very good for you AJ.
With the dual parametric EQ on the X-Ref 12 sub, the sub EQ on the UMC-1 (if there is one?) and moving the sub to different locations in your room you should be able to get some great bass for your #1 seating position. Hopefully it will be a smooth response for several listening positions.
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