LSi/4ohms + receiver

guinsdan
guinsdan Posts: 37
edited February 2009 in Speakers
Can my receiver handle LSi speakers? I am considering bookshelf for the fronts and rears, and of course a center. My receiver is an Integra DTR-6.9.

http://www.integrahometheater.com/model.cfm?m=DTR-6.9&class=Receiver&p=i

It states in the manual I can change the impedance to 4 ohms using dynamic power (210 W (4 ohm, Front)). It also says it is certified 4ohms performance.

So questions are:

1) Will it work? If so, see 2.
2) Will this be enough power? I don't want to get an amp and would probably get RTI A's instead of an amp.
3) Can I still run 5.1 if I switch to 4 ohms or will the power requirements lower the number of speakers?

Thanks!
f: RTi A5
c: CSi A6
r: RTi A3
s: BIC F12
r: Integra DTR 6.9
Post edited by guinsdan on
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Comments

  • pearsall001
    pearsall001 Posts: 5,094
    edited February 2009
    From looking at the spec sheet I'd have to so "NO" as far as running the LSi series. In theory all receivers can run a 4ohm load, but thet can't keep it up without over heating & also they can't handle the dynamic range that a speaker can tax an avr with. They simple aren't designed for continuous 4ohm load. I think an external amp is the for you to go or check into Rotel & NAD as far as receivers go. Both those companies are designed with that capability.
    "2 Channel & 11.2 HT "Two Channel:Magnepan LRSSchiit Audio Freya S - SS preConsonance Ref 50 - Tube preParasound HALO A21+ 2 channel ampBluesound NODE 2i streameriFi NEO iDSD DAC Oppo BDP-93KEF KC62 sub Home Theater:Full blown 11.2 set up.
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  • dorokusai
    dorokusai Posts: 25,577
    edited February 2009
    guinsdan wrote: »
    Can my receiver handle LSi speakers? I am considering bookshelf for the fronts and rears, and of course a center. My receiver is an Integra DTR-6.9.

    http://www.integrahometheater.com/model.cfm?m=DTR-6.9&class=Receiver&p=i

    It states in the manual I can change the impedance to 4 ohms using dynamic power (210 W (4 ohm, Front)). It also says it is certified 4ohms performance.

    So questions are:

    1) Will it work? If so, see 2.
    2) Will this be enough power? I don't want to get an amp and would probably get RTI A's instead of an amp.
    3) Can I still run 5.1 if I switch to 4 ohms or will the power requirements lower the number of speakers?

    Thanks!

    The AVR isn't rated to drive continous 4ohm loads. The specification of (210w (4ohm Front)) is the dynamic power which is what it can supply instantaneously, for short durations. This is not a user selectable power rating.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • cfrizz
    cfrizz Posts: 13,415
    edited February 2009
    Welcome, stick with the RTiA series.
    Marantz AV-7705 PrePro, Classé 5 channel 200wpc Amp, Oppo 103 BluRay, Rotel RCD-1072 CDP, Sony XBR-49X800E TV, Polk S60 Main Speakers, Polk ES30 Center Channel, Polk S15 Surround Speakers SVS SB12-NSD x2
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  • Systems
    Systems Posts: 14,873
    edited February 2009
    guinsdan wrote: »
    Can my receiver handle LSi speakers?
    They do rate it for 4 ohm duty ( must be selected via menu)but will it have the grunt and dynamic capability to drive LSis?IIRC the Lsi's 9's dip below 4 ohms in the bass range thus would be a rather tough load for a reciever,aswell your desired listening levels and room size will be factors.
    Testing
    Testing
    Testing
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  • guinsdan
    guinsdan Posts: 37
    edited February 2009
    Is there a cheap amp option? Is there a big difference between RTiA and LSi? I was thinking since I am now considering bookshelf's instead of floor-standing LSi is a better than RTiA.

    Thanks for all the info so far!
    f: RTi A5
    c: CSi A6
    r: RTi A3
    s: BIC F12
    r: Integra DTR 6.9
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  • Bass_Pedal
    Bass_Pedal Posts: 196
    edited February 2009
    There is a big difference between the two series, if you do a search of any of the speakers in the respective lines you will see there is allot written about them in the forums. To boil it down in brief, RTi's are excellent for HT but not quite as good for music as the LSi's are. LSi's do an excellent job with HT but are designed for music and deliver a more laid back sound. Alot of polkies think that the RTi's sound great for rock so if that's what you are into then they may be the way to go. If you do want to go with the LSi's there are several options on the used market for external amps that can drive them quite well, some examples: Adcom, Carver, Rotel and several others. And I should also mention that there is always Emotiva, that offer very reasonably priced amps with lots of power, brand new.
    Mains - Vienna Acoustics Mozart Grand
    Subs - Rel T5 x 2
    Amplification - Bryston 3b cubed
    Pre Amp - Marantz Sc11-1
    SACD - Marantz Sa11-1
    Stream - Cambridge Audio CXN v2
    Dac - Marantz Dac-1
    TT - Pro-Ject RPM 9.1 w/ Ortofon 2M Black Cartidge
    Phono Stage - Project Tube box DS
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  • gmmosh
    gmmosh Posts: 15
    edited February 2009
    guinsdan,

    I was running an Onkyo 701 up until a month ago. It has very similar amp specifications as the Integra. I was running LSi 7's in the front and rear and the LSi C as the center. It ran them fine at low volumes, but the receiver did produce a bunch of heat. I also had it go into protect mode a couple of times. Learned to keep the volume down. They sounded alright and I used this setup for 4 years.

    Just last month I upgraded to the B&K Reference 200.7 Amp and Reference 70 Pre/Pro. Moving to B&K was my plan all along, I was just waiting for them to support HDMI and the new HD Audio formats. All I can say is WOW. They LSi's sound so much better. It is hard to explain. They are fuller and clearer!!! Now I can run everything at reference levels and shake the house!!

    So, I would say you can get by with an Integra Receiver, but should plan on upgrading eventually.

    The LSi's are great speakers for the money!!

    Mike
    HT Setup
    Samsung - HL-61A750 61" LED DLP
    Samsung - BD-P2550 Blu-Ray Player
    B&K Reference 70 Pre/Pro
    B&K Reference 200.7 Amp
    Polk Audio - Lsi9 (Left & Right)
    Polk Audio - LsiC (Center)
    Polk Audio - Lsi7 (Left & Right Surrounds)
    Polk Audio - Lsi7 (Rear Surrounds)
    Polk Audio - PSW1000 (2 Subwoofers)
    XBox 360 with HD-DVD Add-On
    Harmony 880 Universal Remote
    Panamax MAX 5400-EX Conditioner/Surge Protector
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