Amp for the rears?

Early B.
Early B. Posts: 7,900
edited August 2004 in Electronics
See my setup below.

For those of you with separate amps powering your HT speakers, would I benefit by acquiring a 2-channel amp for my rear speakers, or is the receiver's amp power sufficient for my use? My den is 13' by 20' with an 8' ceiling.

Thanks.
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."
Post edited by Early B. on
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  • Frank Z
    Frank Z Posts: 5,860
    edited August 2004
    If your interested I've got a Pioneer Elite M-10x that I'm not using for anything. It was used to power my LSi7's before I upgraded to a 7 channel amp. The amp puts out 100WPC into 4ohms (75wpc into 8 ohms)$200+freight
    9/11 - WE WILL NEVER FORGET!! (<---<<click)
    2005-06 Club Polk Football Pool Champion!! :D
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  • Early B.
    Early B. Posts: 7,900
    edited August 2004
    Decided to try it out. Just ordered a Parasound HCA-1000 to power the rear speakers. I'll let you guys know if it makes a significant difference.
    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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  • hamzahsh
    hamzahsh Posts: 439
    edited August 2004
    Originally posted by Early B.
    See my setup below.

    For those of you with separate amps powering your HT speakers, would I benefit by acquiring a 2-channel amp for my rear speakers, or is the receiver's amp power sufficient for my use? My den is 13' by 20' with an 8' ceiling.

    Thanks.

    Yes, AMP does make a lot of difference even for rears. More dynamic, smoother and clear sound with detail. My ADCOM GFA-7605 powers the Center, Sides and Rears. The fronts are powered by NAD C272. Unbelievable sound!

    If you're into separates and using A/V receiver as a pre/pro, I would say use it only as a pre/pro.

    :D
    Panasonic TH-50PX80U Plasma HDTV
    Polk Audio RT800i (fronts)
    Polk Audio CS400i (center)
    Polk Audio F/X1000 (side surrounds)
    Polk Audio RTi6 (back surrrounds)
    Velodyne CHT-15 (subwoofer)
    Yamaha RX-V1400 (Pre/Pro)
    NAD C272 (2-ch Amp)
    Adcom GFA-7605 (5-ch Amp)
    Toshiba SD-3109 (DVD/CD player)
    Malata DVP-580 (Multi-region DVD player)
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  • Willow
    Willow Posts: 11,060
    edited August 2004
    ok I know nothing when it comes to using a 2 amp. what do I need right now all I have is a rxv540 as my main system. A kenwood in the bedroom and a 2 chanel sanui not being used...

    I am interested in looking into using a 2 amp set up but don't know where to start.. I have these extra receviers I could sell or trade at a shop down the street....what do I need and need to do ??

    thanks
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  • Frank Z
    Frank Z Posts: 5,860
    edited August 2004
    Willow,
    Are you trying to add an amp to your HT system for rear speakers? Setting up a dedicated 2 channel system? Using a seperate amp for your mains only? Need more info on what it is you're trying to accomplish.
    9/11 - WE WILL NEVER FORGET!! (<---<<click)
    2005-06 Club Polk Football Pool Champion!! :D
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  • Willow
    Willow Posts: 11,060
    edited August 2004
    sorry trying to get better sound by using 1 amp say for rears and center or just rears and one for mains only or mains and center..does this help. no 2 channel
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  • Frank Z
    Frank Z Posts: 5,860
    edited August 2004
    Adding an amp to an existing system can improve the sound quality of the channel(s) being driven by the additional amp. Remember that the power supply in your receiver is feeding the processing stage and the amplifiers in the receiver. Adding a seperate amp can potentially provide for a cleaner signal to the speakers connected to that amp. The signal is no longer affected by demands placed on the power supply in the receiver. The signal that is delivered from the receiver to the amp is a non-amplified, but it has been processed by the receiver.

    Be forewarned, adding a seperate amp can only lead to one thing, and it can be down right serious.......Upgradeitis! Oh sure you'll just try a little bit of extra amplification, but next thing you know your hangin' out with the wrong kinda people at the local A/V store and cruisin' ebay or Audiogon for a "Seperates Fix!!":D
    9/11 - WE WILL NEVER FORGET!! (<---<<click)
    2005-06 Club Polk Football Pool Champion!! :D
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  • Frank Z
    Frank Z Posts: 5,860
    edited August 2004
    BTW, in order to add a seperate amp you'll need pre-outs on your receiver. No pre-outs=no extrnal amps.
    9/11 - WE WILL NEVER FORGET!! (<---<<click)
    2005-06 Club Polk Football Pool Champion!! :D
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  • Sami
    Sami Posts: 4,634
    edited August 2004
    Originally posted by Early B.
    See my setup below.
    Just out of curiosity, have you tried the 7's as main speakers? I know they won't match your centre but if you're listening to music with this setup at all, the LSi7's should do a better job than the RTi10's.
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  • Early B.
    Early B. Posts: 7,900
    edited August 2004
    Be forewarned, adding a seperate amp can only lead to one thing, and it can be down right serious.......Upgradeitis! Oh sure you'll just try a little bit of extra amplification, but next thing you know your hangin' out with the wrong kinda people at the local A/V store and cruisin' ebay or Audiogon for a "Seperates Fix!!"

    Dammit, this stuff must be contagious. I started out a few months ago by experimenting with a cheap amp for my fronts. Before you know it, I started cruisin' ebay and audiogon for more amps. Anybody got an antidote for it?
    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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  • Early B.
    Early B. Posts: 7,900
    edited August 2004
    Just out of curiosity, have you tried the 7's as main speakers? I know they won't match your centre but if you're listening to music with this setup at all, the LSi7's should do a better job than the RTi10's.

    Yeah, I tried the 7's up front, but preferred the RTi70's (the speaks I had before I got the 10's). I don't listen to music on my HT system, but if I did, I'd probably re-consider the 7's up front.
    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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  • Sami
    Sami Posts: 4,634
    edited August 2004
    Originally posted by Early B.
    Yeah, I tried the 7's up front, but preferred the RTi70's (the speaks I had before I got the 10's). I don't listen to music on my HT system, but if I did, I'd probably re-consider the 7's up front.
    I had the 70's and now 150's. I'll be moving to a new house Saturday and it will be 6 * LSi7's (dual centre) with a SVS PCU. For music the RTi series just doesn't compare with the LSi's, even with the smallest LSi7's. If this was strictly HT then I would propably leave the RTi's in but I will also listen to 2 channel with this system.
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  • malikarshad
    malikarshad Posts: 527
    edited August 2004
    I use my HT for both music and HT. It may sound weird to you guys but I have Lsi7 stacked on top of Rti70. The way I have done is I'm only using Lsi7's tweeter and Rti70 woofer. The silk dome tweeter was bright with Outlaw M200's so I connect the speaker wire to the lower posts of Rti70 and the tweeter is out. For Lsi7 i connect to the upper posts so the woofer is off.
    I'm very pleased with the sound for both HT and music. Best of both worlds.
    BTW I have titled the LSi7 down so the tweeter is at the ear level.

    Speakers=>Salk Soundscape 8, Soundscape Center,Surrounds-Dali Rubicon LCR, Lsi7
    PreAmp, Amp => Marantz AV8801, ATI 6007 amp, Oppo HA-1 DAC
    Source => Sonore MicroRendu, Oppo BDP-103, Mede8er 600XD, Dune HD Smart D1, Synology DS1813+(16TB)
    Sub - JTR Captivator S2 (Dual 18")
    Power - Furman IT-Ref20i on dedicated 30Amp circuit with Furutech GTX-R outlet
    Screen=> JVC RS-45 projector Da-Lite HP 133" 2.35
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  • VR3
    VR3 Posts: 28,791
    edited August 2004
    That takes stacking to a whole new dimension...hehe

    AWESOME, simply awesome --

    Although, have u tried leaving the LSi7's woof plugged up too??
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • malikarshad
    malikarshad Posts: 527
    edited August 2004
    Originally posted by Vr3MxStyler2k3

    Although, have u tried leaving the LSi7's woof plugged up too??
    Yes but the midbass was overwhelming. The Rti70 two woofers are good enough. It sounds much cleaner.
    I even tried stacking on top of Rti150 but i cannot disconnect only the tweeter. If i don't connect upper binding post of Rti150 it disconnects the mid woofer also. The Rti70 works best for me.

    Speakers=>Salk Soundscape 8, Soundscape Center,Surrounds-Dali Rubicon LCR, Lsi7
    PreAmp, Amp => Marantz AV8801, ATI 6007 amp, Oppo HA-1 DAC
    Source => Sonore MicroRendu, Oppo BDP-103, Mede8er 600XD, Dune HD Smart D1, Synology DS1813+(16TB)
    Sub - JTR Captivator S2 (Dual 18")
    Power - Furman IT-Ref20i on dedicated 30Amp circuit with Furutech GTX-R outlet
    Screen=> JVC RS-45 projector Da-Lite HP 133" 2.35
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  • Willow
    Willow Posts: 11,060
    edited August 2004
    Originally posted by Frank Z
    Adding an amp to an existing system can improve the sound quality of the channel(s) being driven by the additional amp. Remember that the power supply in your receiver is feeding the processing stage and the amplifiers in the receiver. Adding a seperate amp can potentially provide for a cleaner signal to the speakers connected to that amp. The signal is no longer affected by demands placed on the power supply in the receiver. The signal that is delivered from the receiver to the amp is a non-amplified, but it has been processed by the receiver.

    Be forewarned, adding a seperate amp can only lead to one thing, and it can be down right serious.......Upgradeitis! Oh sure you'll just try a little bit of extra amplification, but next thing you know your hangin' out with the wrong kinda people at the local A/V store and cruisin' ebay or Audiogon for a "Seperates Fix!!":D

    thanks guess that's out I have no pre-outs on my yammy I do on my kenwood...but I'd rather not use my kenwood as my main system
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