Please help! Selecting a receiver for my LSi25 speakers!

MikeCobot
MikeCobot Posts: 14
in Speakers
Hello - Just bought a pair of brand new lsi25 speakers. Also ordered Yamaha RX v675 receiver to connect to. I have read at some blog posts that lsi25 needs some serious power. Will my Yamaha RXv675 powerful enough to power these speakers? (Both the speakers and the receiver are in transit so haven't had a chance to test them yet. If would send Yamaha 675 back if it is not enough to power the speakers). Thanks!

http://usa.yamaha.com/products/audio-visual/av-receivers-amps/rx/rx-v675_u/
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Comments

  • tonyb
    tonyb Posts: 33,000
    Not even close.

    No receiver will do them justice. You need a receiver with 5.1 preouts first off, then a separate amplifier which you can find used for around 400 bucks.
    HT SYSTEM-
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  • teekay0007
    teekay0007 Posts: 2,289
    Welcome to Club Polk, Mike!

    I have to agree with Tony. That receiver won't even come close to impressing you with your LSi25s. They are VERY power hungry speakers. If you're going to go with a receiver, you've got to first make sure that it at least has preouts for your front two speakers so you can add an external power amp to drive them. The Yamaha that you mentioned only has preouts for two subs and none for any other speakers.
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  • MikeCobot
    MikeCobot Posts: 14
    @tonyb @teekay0007 thank you so much for the counsel! Could I use Onkyo TX-SR805 7.1 Receiver with these? Onkyo claims this receiver has been certified to be used with 4Ohm speakers? Please advise. Thanks!
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  • teekay0007
    teekay0007 Posts: 2,289
    Mike, I own an Onkyo TX-SR805 that I bought new several years ago. I absolutely love that AVR! It's been very dependable for me and it is one of very few pieces of gear that I've owned for that long. It's well built and runs at a pretty cool temp, relative to other Onkyo AVRs that I've owned.

    For use as a preamp/processor, I'd say "go for it!", if you can get one for a good price. However, to be used to power the LSi25s on its own, it's just not a very good idea. I tried it with some LSi15s that I owned a few years ago and it didn't impress me, even when running just the two front chanels. It just didn't have enough oomph to open them up and make them sing. It does have preouts for all 7.1 channels though and would work very nicely with a two or three channel power amp. Then, you could have the amp drive your LSi25 fronts or your fronts and center channel and let the AVR drive your surrounds or surrounds and backs, whichever the case may be.
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  • MikeCobot
    MikeCobot Posts: 14
    @Dskip @teekay0007 I understand that Onkyo TX-SR805 in itself might not be enough to do true justice to Lsi25. But my question is, will it be "safe" to use Onkyo TX-SR805 with Lsi25 (let's say over a year or so) before I decide to spend extra $$$ on an external amp such as Emotiva XPA-2? My only immediate concern is to be able to use the speakers without ruining them with an inadequate receiver.
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  • MikeCobot
    MikeCobot Posts: 14
    @DSkip I'm a newbie to all of this so I really appreciate your counsel. What "7.1/7.2 receiver + amp combination" would you recommend if I were to spend between $500 to $700 on the two combined?
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  • F1nut
    F1nut Posts: 50,734
    The OP seems to be talking 2 channel not surround sound. Therefore, my question to the OP is why would you even consider an AVR for 2 channel?

    As for the AVR 4 ohm rating, all that does is limit current sparing the AVR from cooking itself.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • Inspector 24
    Inspector 24 Posts: 1,308
    The only AVR I've ever heard do any large speaker justice is my Yamaha RX-V3000. It, unlike other modern lightweight receivers doesn't seem to run out of juice and powers my LSi15's quite nicely, for upstairs duty at least.

    Every other modern receiver runs out of steam far too quickly, which considering they weight around 30-40lbs where my 3000 is a hefty 51lbs, all in the power transformer and heat sink, isn't too surprising. Also, it was $2000 14 years ago, so take that into consideration. :o

    So when shopping for amps, keep that in mind, often heavier is better. :p

    So basically what others have said...get a good pre/pro and separate amps. Parasounds rock, and you can pick up a 1000/1200/1500 for $250-500 that will give you 2-300wpc @ 4ohm.




    Up
    LSi15 LSiC - RX-V3000

    Down
    LSiM707 - 706c - 702f/x - Dual HSU VTF-15H Mk2
    Parasound HCA-3500 - HCA-2003A - Marantz SR7005
    Sim2 D60 - Dragonfly 106" Panny 500

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  • mikeyb128
    mikeyb128 Posts: 2,885
    Inspector 24 wrote: »
    So when shopping for amps, keep that in mind, often heavier is better. :p

    Not necessarily! My Sunfire is 46 pounds and will do an easy 400w a channel :wink:
    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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  • F1nut
    F1nut Posts: 50,734
    I believe he was referring to AVR's.

    I wish folks would be more specific, far too many call an AVR, an amp.

    What is the current (amps) spec of your Sunfire amp?
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • mikeyb128
    mikeyb128 Posts: 2,885
    the "specs" say 120 amps peak to peak current per channel.
    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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  • F1nut
    F1nut Posts: 50,734
    Very good, that's the more important spec.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • Inspector 24
    Inspector 24 Posts: 1,308
    mikeyb128 wrote: »
    Inspector 24 wrote: »
    So when shopping for amps, keep that in mind, often heavier is better. :p

    Not necessarily! My Sunfire is 46 pounds and will do an easy 400w a channel :wink:

    I said often, not always. ;)
    Up
    LSi15 LSiC - RX-V3000

    Down
    LSiM707 - 706c - 702f/x - Dual HSU VTF-15H Mk2
    Parasound HCA-3500 - HCA-2003A - Marantz SR7005
    Sim2 D60 - Dragonfly 106" Panny 500

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  • tonyb
    tonyb Posts: 33,000
    F1nut wrote: »
    As for the AVR 4 ohm rating, all that does is limit current sparing the AVR from cooking itself.

    This ^^^

    If your budget is 5-700, get the best receiver you can with 5.1 preouts. Don't play the speakers loud until you have the coin to add an amp. Receiver power ratings are somewhat misleading. A receiver rated to run 4 ohm speakers really just limits the current so the receiver doesn't overheat and fry itself. Except 4 ohm speaker thrive on current, so what you'd be doing is fighting what it needs.

    The LSIM's are 8 ohm and an easier load for an AVR, as is the RTIA series.
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
    lsi 9's
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  • deronb1
    deronb1 Posts: 5,021
    Use 12 awg wire as well, if you are going to use an avr for awhile.
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  • MikeCobot
    MikeCobot Posts: 14

    After spending weeks researching for AV Receivers I have narrowed down to Marantz SR6009 versus Pioneer SC 82. These seem to have very similar specs in general. Could you please help me choose one of these 2 based on following?

    1. Reliability of the brand

    2. Pioneer has D3 amplification, and many on this forum have said it helps the unit to run cooler. How about Marantz? Did anyone have any issues with overheating etc.?

    3. Pioneer 82 seems a lot heavier than Marantz (32 pounds vs 25 pounds). Will this make any difference?

    4. Marantz has Audyssey Gold Built-in; whereas Pioneer 82 uses their own MCACC.

    5. How is the reputation of these brands? This will be my very first receiver so have no idea in terms of which one is more reputed?

    Thanks for your help in advance!

    Mike
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  • F1nut
    F1nut Posts: 50,734
    xcapri79 wrote: »
    F1 always gets it right.

    Fixed it for ya.

    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

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  • Nightfall
    Nightfall Posts: 10,086
    edited March 2015
    Having owned an RX-V667, the RX-V series is garbage for music and seriously lacking in the power department. Don't consider Yamaha unless you're willing to go for the Aventage line RX-A10xx, 20xx, or 30xx.

    I didn't see this thread before I replied to your other one. Considering your speakers, go with the Pioneer unless you're certain you're going to add an amp. Even with the Pioneer you should add an amp.
    afterburnt wrote: »
    They didn't speak a word of English, they were from South Carolina.

    Village Idiot of Club Polk
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  • MikeCobot
    MikeCobot Posts: 14
    Thank you so much for everyone's advice! Based on the advice I have received on this forum, I just ordered Pioneer SC - 82 unit, and will receive it next week! Excited! Thank you so much again!
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  • MikeCobot
    MikeCobot Posts: 14
    Hello! I received my Pioneer Elite 82 today, and just finished the set-up but no sound from the speakers?! Here is my set-up:

    I have a Roku player. Roku HDMI out to AV Receiver In (6th port)

    HDMI Control Out from AV Receiver to HDMI Input of the TV.

    What am I doing wrong? I could see the video from Roku on the TV that is passing through the receiver but no sound! Please help!
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