LSi9's With or Without Sub

janmike
janmike Posts: 6,146
edited October 2006 in 2 Channel Audio
I had a colleague over the other day to listen to music and at one point she indicated that in her opinion some of the bass was not there. The LSi9's were configured without the SVS PB12-PLUS - 2 CH only. The next day I configured the system to use the sub while playing music. I played with it for hours and came to one of two conclusions.

1) I did not configure it properly. I tried many levels.

2) I only like music in 2 CH.

Today I disable the sub for 2 CH and played the same music. The conclusion is that the sub will be used for video only. Am I missing something.

The music was by Josh Groban namely the title "My Confession".
Michael ;)
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NORTH of 60°
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  • swchma
    swchma Posts: 49
    edited October 2006
    Hey janmike,

    I recently connected the 9's to my system and found them to be brilliant on the stereo mode, but need the sub to provide the bass that the 9's cannot produce. Foir the last 3 days I have not listend the system in 5.1 or cinima mode, the 9's by them self are that surrounding, but need the sub to fill out and feel the punch. Good luck.
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  • Lsi9
    Lsi9 Posts: 616
    edited October 2006
    If the lsi9 was a full range speaker then I say w/out sub is a good Idea but....it has limited frequency, I would keep the sub on for music.

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  • jm1
    jm1 Posts: 618
    edited October 2006
    I had the 9's for about three and a half years. During this time, I only had them running full range for about two weeks between selling some Def Tech subs and receiving my SVS subs. I preferred the sonic characteristics of the 9’s when relieved of bass duties.

    I have always had the Def Tech and SVS subs located near (behind) their corresponding L+R speakers. Even when I had only one SVS due to shipping problems, the single unit was located behind the L speaker and provided excellent results. Until recently, I used the line level crossover included in the plate amp. I now use an external active crossover between the preamp and amp.

    You do not provide any details so it is hard to determine if there is a problem and suggest any corrective action. Just guessing, but if your sub is placed in a corner, I would try moving it from the corner to a location within the boundaries of the L+R speakers and recalibrate. Corner placement activates all room modes which may not be ideal for music.

    Keep trying as you should be able to obtain excellent results.
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  • Joey_V
    Joey_V Posts: 8,552
    edited October 2006
    Had the 9s before and had it anchored by an SvVS 2531+, however, I could never get it to sound right. Probably due to peaks and dips in the FR of the SVS as a result of the room. Or it could be that the SVS couldn't keep up to my ears.

    Not sure... but I preferred no sub after a while.

    Joey
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  • jm1
    jm1 Posts: 618
    edited October 2006
    Just for the record, I have the PC-Ultra model and have no experience with the ISD or Plus drivers. It did take some time to dial in the correct setting, but was well worth the effort. The room has always had some level of acoustic treatments and is currently at this level of treatment.
    All truth passes through three stages. First, it is ridiculed, second it is violently opposed and third, it is accepted as self evident.
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  • Shizelbs
    Shizelbs Posts: 7,433
    edited October 2006
    Not that I have been exposed to all that many, but I have yet to hear an SVS sub that I liked with music.
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  • janmike
    janmike Posts: 6,146
    edited October 2006
    I think I will do some evaluations this weekend. I do own another sub and that is an older REL STRATA I model. Perhaps the SVS is too much or I like you Zero, I do not hold the expertise to properly calibrate the sub.
    Michael ;)
    In the beginning, all knowledge was new!
    NORTH of 60°
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  • unc2701
    unc2701 Posts: 3,587
    edited October 2006
    Try running the 9's full range, and bring in the sub around at 40hz, then dial the crossover up till it sounds right.

    Also- how big is the room? have you tried moving around & listening for shifts in the bass?
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  • swchma
    swchma Posts: 49
    edited October 2006
    Dude, put on the CD ERALDO BERNOCCHI, Harold Budd and play with sub and without and it wiil immediatly solve the problem. These speakers need the sub.
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  • janmike
    janmike Posts: 6,146
    edited October 2006
    unc2701 wrote:
    Try running the 9's full range, and bring in the sub around at 40hz, then dial the crossover up till it sounds right.

    Also- how big is the room? have you tried moving around & listening for shifts in the bass?
    The room is approx. 18.5 X 14.5. I need to find out if the Proceed processor can differentiate between subs. The REL for music and the SVS for VIDEO. Not both on at the same time.
    Michael ;)
    In the beginning, all knowledge was new!
    NORTH of 60°
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  • unc2701
    unc2701 Posts: 3,587
    edited October 2006
    Can you get an SPL meter and a test tone CD? run tones in the 55hz-90hz range & wander the room while you do it looks for spike & dips in the response. It could be the room & the sub is just muddying things up more.
    Gallo Ref 3.1 : Bryston 4b SST : Musical fidelity CD Pre : VPI HW-19
    Gallo Ref AV, Frankengallo Ref 3, LC60i : Bryston 9b SST : Meridian 565
    Jordan JX92s : MF X-T100 : Xray v8
    Backburner:Krell KAV-300i
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  • organ
    organ Posts: 4,969
    edited October 2006
    I have a pair of 9's and I had a hard time getting it to blend in with my PSW650. I think I found the right setting at around 45-50Hz.

    Yes, you are missing quite a bit of low end information when using the 9's without a sub. I believe the 9's cut off around 50Hz. Compared to my RF-35, which cuts off at the low 30's, I was able to hear the low bass that the 9's simply ingnored. But the bass on the 9's is very powerful and robust at the frequencies they're comfortable with.
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