sufficient power for RTI10?

dudeicus
dudeicus Posts: 8
edited December 2007 in Electronics
Hi all, I am in the process of purchasing a pair of RTi-10s and wanted to know just how much juice it takes to bi-amp them properly.

Without upgrades to my current setup, they would be powered by a Pioneer VSX-815 (not 815k), using the 6th and 7th channels in the bi-amp mode.
EnTech 205.2, shnazzy...
Post edited by dudeicus on
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  • Early B.
    Early B. Posts: 7,900
    edited December 2007
    Forget about bi-amping. Just buy a decent 150 - 200 wpc amp.
    HT/2-channel Rig: Sony 50” LCD TV; Toshiba HD-A2 DVD player; Emotiva LMC-1 pre/pro; Rogue Audio M-120 monoblocks (modded); Placette RVC; Emotiva LPA-1 amp; Bada HD-22 tube CDP (modded); VMPS Tower II SE (fronts); DIY Clearwave Dynamic 4CC (center); Wharfedale Opus Tri-Surrounds (rear); and VMPS 215 sub

    "God grooves with tubes."
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  • MSALLA
    MSALLA Posts: 1,602
    edited December 2007
    Early B. wrote: »
    Forget about bi-amping. Just buy a decent 150 - 200 wpc amp.


    Second to that. Check the used market like audiogon or e-bay and you can find a great 2-channel amp 150 to 200 watts in the 300 to 400 dollar range.

    PS. welcome to the site.
    Michael


    Samsung 50" HD DLP
    Yamaha RX-V2500
    (2) Outlaw 200
    Adcom GFA 555
    Sony BDP300
    Denon 2900 DVD
    Lsi9's mains
    Lsi7's rear
    Lsic center
    12.1 SVS driver in 4.53 cuft. tube
    Harmony 880
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  • dudeicus
    dudeicus Posts: 8
    edited December 2007
    Kex wrote: »
    What you suggest with your 6 & 7 channels is not bi-amping, it's more like bi-wiring. You are not adding separate amplification to your speakers.

    Not a true bi-amp, but more power (200wpc x2 & 100wpc x3 as opposed to 100pwc x7). I haven't really tested it as my current mains (RTi6) are not rated for 200 watts... And yeah, it has the pre-outs for all channels.

    It would seem that without a tweeter anywhere in state (LA) the best price available would be from OneCall: http://www.onecall.com/ProductDetails.aspx?id=28504

    Is there an amp under $500 that anyone would recommend? There are many specialty audio stores in my area that allow in home trial of gear. The amps would be fed by a sony CDP-CX555 and an Entech 205.2 DAC
    EnTech 205.2, shnazzy...
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  • cfrizz
    cfrizz Posts: 13,415
    edited December 2007
    Welcome Dude. What we are trying to tell you is that you aren't even getting the 100wpc x7 with your receiver. so you won't be getting 200wpc by utilizing the other 2 channels.

    You have preouts on your receiver, so shop audiogon for a separate amplifier of at least 200wpc.

    BTW, it is better to have more power than not enough. All my speakers are being fed by a 405wpc amp & they sound great. So running the 6's with a 200wpc amp will not be a problem.

    Brands to check out are Outlaw Audio, Rotel, Parasound, Sunfire, Adcom, Nad.

    Start putting more money away since it will probably cost you more than 500 dollars to get it right the first time.
    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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  • thejck
    thejck Posts: 849
    edited December 2007
    go with a nice used parasound amp.
    hca-1500a
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  • dudeicus
    dudeicus Posts: 8
    edited December 2007
    cfrizz wrote: »
    Start putting more money away since it will probably cost you more than 500 dollars to get it right the first time.

    Well if I can't purchase one right away, I might as well save up for a pair of Brystons :D My old man has a pair of 7BST's, they are insanely powerful and neutral.
    EnTech 205.2, shnazzy...
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  • MADGSF
    MADGSF Posts: 603
    edited December 2007
    Agree with everything stated above. Did the "bi-amp" with my Elite and RTi-10s and could not tell a difference. Put the B&K in the mix and I COULD tell the difference. High current is waht you want.
    AVR: Elite VSX-21TXH
    Amplifier: B&K 7250 Series ii
    Misc: Velodyne SMS-1
    Mains: RTi-10
    Center: CSi-5
    Rear: Boston DSi460
    Sub: SVS PC-Ultra
    TV: Panasonic TC-P58V10
    DVD: Panasonic DMP-BD60K
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  • dudeicus
    dudeicus Posts: 8
    edited December 2007
    Kex wrote: »
    less than $250

    It was a hold-me-over until I could upgrade, got it for under $80 shipped from the pioneer ebay outlet:p
    EnTech 205.2, shnazzy...
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  • MSALLA
    MSALLA Posts: 1,602
    edited December 2007
    Most mid-fi receivers like denon, yammi, etc are rated with only 2 channels driven. So if it is 150wpc. 7 channel amp section it's really only 150 with the front two channels driven alone.
    You can find Adcom GFA 555's on the used market in like new shape for under $400.00
    They are 200wpc x 2 and I don't think you will find anyone on here with a bad opinion about them.
    Michael


    Samsung 50" HD DLP
    Yamaha RX-V2500
    (2) Outlaw 200
    Adcom GFA 555
    Sony BDP300
    Denon 2900 DVD
    Lsi9's mains
    Lsi7's rear
    Lsic center
    12.1 SVS driver in 4.53 cuft. tube
    Harmony 880
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  • dudeicus
    dudeicus Posts: 8
    edited December 2007
    https://www.pioneerelectronics.com/pio/pe/images/portal/cit_11221/218219098VSX815OperatingInstructions.pdf

    Page 73 of manual states continuous power output in stereo and with all channels driven.
    The VSX-915 drops from 120w to 110w changing from 2 channel to 7.1, but the 815 stays at 100w regardless of stereo/surround selected.

    Anywho, my local dealers stock amps from:
    Bryston, Krell, Classe, Adcom, Mcintosh, Integra, and Parasound.
    EnTech 205.2, shnazzy...
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  • dudeicus
    dudeicus Posts: 8
    edited December 2007
    Kex wrote: »
    The FTC has NO rules AFIK on "Power Output Claims for Amplifiers" other than stereo.
    I was unaware of that, sneaky little tards' they are...

    I'm leaning towards Bryston and possibly McIntosh, since those are the two I've had a the most amount of listening time with (unless someone wants to donate a krell, hint-hint). The dealer that stocks Bryston doubles the factory warranty for free:eek:
    EnTech 205.2, shnazzy...
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  • dudeicus
    dudeicus Posts: 8
    edited December 2007
    spiffy
    http://www.ftc.gov/opa/2000/12/amprule.shtm
    EnTech 205.2, shnazzy...
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  • cfrizz
    cfrizz Posts: 13,415
    edited December 2007
    That was 7 years ago. So what happened? Certainly nothing has changed!
    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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  • dudeicus
    dudeicus Posts: 8
    edited December 2007
    "Issues Supplemental Request For Comment on Proposed Revisions to Testing Procedures for "Home Theater" Receivers"

    Obviously, proposal = fail. I suspect treachery was afoot, shurely this is the work of Bose!
    EnTech 205.2, shnazzy...
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