What's better for rears? LSiFX's or LSi9's... & SVS PB12-Plus/2...

G-2
G-2 Posts: 533
in Speakers
Hey folks, just going through some changes in the main setup. I'm currently running my LSiFX's in the back corner and I'm debating replacing them with the LSi9's. I've got some new front and centers coming (Chane) and wanted thoughts on best sound from the rears, I'm thinking the 9's as they're better at directing the sound to a specific location.

My SVS PB12-Plus/2 stopped producing any sound, so I've replaced it with a couple of M&K V-125s, so should I try to repair this guy (SVS sells a replacement amp for 399-), or just sell it as it is. It's to darn big to ship, when it arrived here it came on a skid, via freight.

Thanks for any and all input!
Home Theater
Chane A3rx-c's, A2rc-c, A1rx-c's|Miller & Kreisel V-125's|Sony XBR65X810C 65" 4K LED TV|
Earthquake Cinenova Grande-5|Pioneer Elite - VSX-84TXSi-AVR|TRIPPLITE LCR2400|
Ultrasonic Amp Stand|Blue Jeans,Audioquest,Monster Cables|

2 - Channel
Polk RTA 12c's w/RDO194 TWEETS, clarity ESA caps mills resistors (full mod)|Turntable|
Anthem MCA 2|Acurus Act 3 Pre Pro|Parasound P/Ph 100|Pioneer Elite N-30|Adcom GDA600|
Premier Rack|Blue Jeans,Audioquest,Monster Cables|
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Comments

  • rooftop59
    rooftop59 Posts: 8,121
    on the sub, although its a bummer to have to shell out 4 bills to get it working again, it would cost several times that much to replace the entire sub with something equal. I guess I would look at it this way, you'll basically be getting a new SVS PB12-Plus/2 for $400 bucks, which is less than SVS's current ENTRY level options. That's actually a pretty friggin sweet deal when you look at it that way...
    Living Room 2.2: Usher BE-718 "tiny dancers"; Dual DIY Dayton audio RSS210HF-4 Subs with Dayton SPA-250 amps; Arcam SA30; Musical Fidelity A308; Sony UBP-x1000es
    Game Room 5.1.4:     Denon AVR-X4200w; Sony UBP-x700; Definitive Technology Power Monitor 900 mains, CLR-3000 center, StudioMonitor 350 surrounds, ProMonitor 800 atmos x4; Sub - Monoprice Monolith 15in THX Ultra
    Bedroom 2.1     Harmon Kardon HK3490; Bluesounds Node N130; Polk RT25i; ACI Titan Subwoofer
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  • adb3da
    adb3da Posts: 507
    It might be worth taking the sub amp into an electronics repair shop to have a look at it. Might end up being cheaper to fix.
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  • EndersShadow
    EndersShadow Posts: 17,596
    From what I've read it depends on your setup.

    For a 7.1 they recommend both side and rear surrounds be direct firing (ie LSi 7/9) v dipole (LSi F/x). For 5.1 it can be either, though personally I prefer my LSi F/x over LSi 7's which I tried in the same location (haven't tried 9's but I'm assuming would be the same).

    But as with all things, if you like the 9's over the LSi F/x's who cares if protocol says your wrong lol...
    "....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
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  • mikeyb128
    mikeyb128 Posts: 2,885
    Not sure there is a right way to do it. I use 2 Pairs of lsifx for surround/back duties. They are much more flexible with placment and sound best mounted on the wall several feet above your head. I have tried lsi7 and lsi15's for rear duties. The lsifx sound better. What ever sounds good to you is the answer on this one.
    2 channel:
    Bryston 4B3, Bryston BDA3, Cary SLP05, Shanling CDT1000SE with parts conneXion level 2 mods, Nottingham analogue ace space 294, soundsmith Carmen MKii, Zu DL103 MKii, Ortofon MC 20 MKii, Dynavector XX2 MKii, Rogue Audio Ares, Core power technologies balanced power conditioner, Akiko Corelli power conditioner with Akiko Audio HQ power cable, Nordost heimdall 2, Frey 2, interconnects, speaker and power cables, Focal Electra 1028 BE 2, Auralic Aries Femto, Black diamond racing cones, ingress audio level 1 roller blocks, JL Audio E110 with Auralic subdude, Primacoustics room treatments.
    Theater:
    Focal Aria 926,905,CC900, SVS PB ultra x2. Pioneer Elite SC85, Oppo BDP93, Panamax M5400PM, Minix neox6, Nordost Blue heaven LS power cables.

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  • monepolk
    monepolk Posts: 1,146
    I preferred the lsifx as the side surrounds over the lsi9's, but I never tried them as back surrounds with the 9s in the system.
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  • G-2
    G-2 Posts: 533
    Thank you for the responses. The folks at SVS were extremely helpful. The guy I spoke with gave me a list of stuff to check out, so I'm going into the sub today. The use this strange square screw head so I'm going to have to pick up a bit that works on that.

    The 2 Miller & Kreisel V-125s that I'm running in place of the SVS actually sound better. They're both forward firing and now that they're dialed in they sound amazing. the SVS is an outstanding sub, but it is humongous, and takes up quite a bit of space, in my room.

    I'm going to have to try out the LSiFX's against the LSi9's and see which sounds better, though I'm going to need to get the rears up a bit. Currently on top of 35" Sanus Stands, they're going to need to go higher. Hmm, perhaps I'll have to hang them off the ceiling... hmmm
    Home Theater
    Chane     A3rx-c's, A2rc-c, A1rx-c's|Miller & Kreisel V-125's|Sony XBR65X810C 65" 4K LED TV|
    Earthquake Cinenova Grande-5|Pioneer Elite - VSX-84TXSi-AVR|TRIPPLITE LCR2400|
    Ultrasonic Amp Stand|Blue Jeans,Audioquest,Monster Cables|

    2 - Channel
    Polk     RTA 12c's w/RDO194 TWEETS, clarity ESA caps mills resistors (full mod)|Turntable|
    Anthem MCA 2|Acurus Act 3 Pre Pro|Parasound P/Ph 100|Pioneer Elite N-30|Adcom GDA600|
    Premier Rack|Blue Jeans,Audioquest,Monster Cables|
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