Help!! which power amplifier for my RTI-12

lupavalo
lupavalo Posts: 17
in Electronics
Hello everyone.
I made ​​my decision to buy a power amplifier.
Now the question is Which brand or model?
It would be for my RTI-12 that as everyone knows demans much power.
I will used it to listen music,
In the forum I read that every recommended EMOTIVA XPA-2, however I would like to hear opinions about other brands that do not exceed the range of $ 1,000.

Finally, on Ebay I have a lot of options but used ones. It is a bad idea to buy a used amplifier? How common is damaged amplifiers?

Greetings to all.
Polk RTI-12
Polk PSW-125
Polk RTI-3
Polk RTI-A1
AVR Marantz SR7005
Turntable Denon DP-300F
Power Console Belkin PureAV
Denon DVP-1610 Blue-ray/DVD/CD
Mediabridge ULTRA Series Speaker Cable
· Share on FacebookShare on Twitter

Comments

  • slk55amg
    slk55amg Posts: 305
    I have an Emotiva XPA 5. Now over 5 years old, rock solid, runs cool. Huge amount of power running LSi,s and Lsic, and monitor 70,s as side surrounds.
    Emotiva XPA5, Sony ES 5300,: Lsi 15,s LSIC, Monitor 70,s, ( side surrounds) FXI 3,s, (rear surrounds)Micropro4000, Velodyne DEQ 10, Sony 55inchXBR 930D Sony BDP 790 Bedroom rig SonyES 3200 RTIA1,s CSIA4 FXI3,s polk PSW 10 SONY 34inch XBR960:cool:SONY BDP550
    · Share on FacebookShare on Twitter
  • JDFx
    JDFx Posts: 36
    I got a pair of RTI12's coming on Thursday. I was looking at amps too. Decided to go slow and get a Parasound 2125v2 now. Run them at 150 wpc for a couple months while the wallet recuperates and then I'll get a second 2125v2 and run them both bridged at 400 wpc.
    Psyched.
    · Share on FacebookShare on Twitter
  • pitdogg2
    pitdogg2 Posts: 25,447
    Just be careful as some amps when bridged do not like to see signal go lower than 6-8 ohms. When they start dipping into 4-3 ohms you could have some trouble.
    · Share on FacebookShare on Twitter
  • tonyb
    tonyb Posts: 32,967
    edited August 2014
    pitdogg2 wrote: »
    Just be careful as some amps when bridged do not like to see signal go lower than 6-8 ohms. When they start dipping into 4-3 ohms you could have some trouble.

    Yep, and the 12's certainly dip. Most amps in Bridged mode sound like horse **** in the higher frequencies too.


    Wow..."****" is edited out ? Who's doing this editing...Mr. Rogers ?
    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
    · Share on FacebookShare on Twitter
  • lupavalo
    lupavalo Posts: 17
    Thanks for the advices, but I think in the case of XPA-2 would not need to make the bridge as they are 2 independent channels right ??
    Polk RTI-12
    Polk PSW-125
    Polk RTI-3
    Polk RTI-A1
    AVR Marantz SR7005
    Turntable Denon DP-300F
    Power Console Belkin PureAV
    Denon DVP-1610 Blue-ray/DVD/CD
    Mediabridge ULTRA Series Speaker Cable
    · Share on FacebookShare on Twitter
  • lupavalo
    lupavalo Posts: 17
    JDFx wrote: »
    I got a pair of RTI12's coming on Thursday. I was looking at amps too. Decided to go slow and get a Parasound 2125v2 now. Run them at 150 wpc for a couple months while the wallet recuperates and then I'll get a second 2125v2 and run them both bridged at 400 wpc.
    Psyched.

    But the cost fo the Parasound 2125v2 is very similar to the EMOTIVA XPA-2 (750vs900)??
    What´s the deal to buy 2 Parasound??
    Polk RTI-12
    Polk PSW-125
    Polk RTI-3
    Polk RTI-A1
    AVR Marantz SR7005
    Turntable Denon DP-300F
    Power Console Belkin PureAV
    Denon DVP-1610 Blue-ray/DVD/CD
    Mediabridge ULTRA Series Speaker Cable
    · Share on FacebookShare on Twitter
  • tonyb
    tonyb Posts: 32,967
    The deal is explained already....plus the Parasounds are a better sounding amp with RTI's anyway than Emo. Buy one bigger Parasound rather than 2 smaller ones bridged.
    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
    · Share on FacebookShare on Twitter
  • lupavalo
    lupavalo Posts: 17
    Ok I understand.
    Thanks for the advice, I will considerer the Parasound - 2250. ($300 more expensive) but could worth it!!!
    Polk RTI-12
    Polk PSW-125
    Polk RTI-3
    Polk RTI-A1
    AVR Marantz SR7005
    Turntable Denon DP-300F
    Power Console Belkin PureAV
    Denon DVP-1610 Blue-ray/DVD/CD
    Mediabridge ULTRA Series Speaker Cable
    · Share on FacebookShare on Twitter
  • JDFx
    JDFx Posts: 36
    pitdogg2 wrote: »
    Just be careful as some amps when bridged do not like to see signal go lower than 6-8 ohms. When they start dipping into 4-3 ohms you could have some trouble.

    Ugh. Got me scared now.

    The specs on Parasound's site state "400 watts x 1 bridged into 8 Ω or 4 Ω" so I'm hoping the impedance won't be a problem since they are specifically rated for 4 ohm in bridged mode.

    However, @tonyb 's comment regarding the sound quality has me equally concerned, perhaps even more so.

    The amp is already ordered and I just verified it already shipped. So I need to decide whether I chance it or return it and eat the shipping. I guess i can hook it up to one speaker in bridge mode and see what it sounds like and then make a decision.
    · Share on FacebookShare on Twitter
  • tonyb
    tonyb Posts: 32,967
    You can try one channel in bridged mode with the amp you have to see if you like it. For me personally, I've never heard a bridged amp that sounded better than non bridged.
    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
    · Share on FacebookShare on Twitter
  • boston1450
    boston1450 Posts: 7,640
    ^^^^ Interesting info as i have only heard bridged amps a few times but never compared
    ..
    · Share on FacebookShare on Twitter
  • tonyb
    tonyb Posts: 32,967
    Always compare....take the exact same amp and listen to it bridged and unbridged. Betcha overall you'll choose the unbridged version. Couple variables to consider, but generally speaking for overall SQ.
    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
    · Share on FacebookShare on Twitter
  • mufsoman
    mufsoman Posts: 631
    Still have my Rotel 1095 for sale that I used to power my Rti12's.........
    Parasound HCA-2003A & 2205A
    Front: Rti12's
    Center: Csi A6
    Side surrounds: Polk Rti A1's
    Atmos: Mirage Nanosats
    APC H15
    Power cords by Pepster, Morrow MA4 IC's, AQ Midnight, AQ Chocolate HDMI's[/SIZE]
    The rest is TBD.
    · Share on FacebookShare on Twitter
  • lupavalo
    lupavalo Posts: 17
    mufsoman wrote: »
    Still have my Rotel 1095 for sale that I used to power my Rti12's.........

    How much do you ask for the Rotel 1095 and shipping cost to FL 33126??
    Polk RTI-12
    Polk PSW-125
    Polk RTI-3
    Polk RTI-A1
    AVR Marantz SR7005
    Turntable Denon DP-300F
    Power Console Belkin PureAV
    Denon DVP-1610 Blue-ray/DVD/CD
    Mediabridge ULTRA Series Speaker Cable
    · Share on FacebookShare on Twitter
  • lupavalo
    lupavalo Posts: 17
    mufsoman wrote: »
    Still have my Rotel 1095 for sale that I used to power my Rti12's.........

    And how old is it, any scratch?
    Polk RTI-12
    Polk PSW-125
    Polk RTI-3
    Polk RTI-A1
    AVR Marantz SR7005
    Turntable Denon DP-300F
    Power Console Belkin PureAV
    Denon DVP-1610 Blue-ray/DVD/CD
    Mediabridge ULTRA Series Speaker Cable
    · Share on FacebookShare on Twitter
  • Sherardp
    Sherardp Posts: 8,038
    I started out with Outlaw M2200s powering my RTi12s. They are very nice amps for the buck. I personally love IceAmps like Wyred4Sound and D-Sonic. Check this out.

    http://app.audiogon.com/listings/solid-state-d-sonic-500-s-class-d-2014-08-05-amplifiers-11231-brooklyn-ny
    Shoot the jumper.....................BALLIN.............!!!!!

    Home Theater Pics in the Showcase :cool:

    http://www.polkaudio.com/forums/showcase/view.php?userid=73580
    · Share on FacebookShare on Twitter
  • lupavalo
    lupavalo Posts: 17
    Sherardp wrote: »
    I started out with Outlaw M2200s powering my RTi12s. They are very nice amps for the buck. I personally love IceAmps like Wyred4Sound and D-Sonic. Check this out.

    http://app.audiogon.com/listings/solid-state-d-sonic-500-s-class-d-2014-08-05-amplifiers-11231-brooklyn-ny

    But, with nearly that money I can buy an amplifier type a/b which is supposedly better than the type d??

    Whats is your opinion about the amplifier tyype d??
    Polk RTI-12
    Polk PSW-125
    Polk RTI-3
    Polk RTI-A1
    AVR Marantz SR7005
    Turntable Denon DP-300F
    Power Console Belkin PureAV
    Denon DVP-1610 Blue-ray/DVD/CD
    Mediabridge ULTRA Series Speaker Cable
    · Share on FacebookShare on Twitter
  • Sherardp
    Sherardp Posts: 8,038
    Pioneer uses IceAmps in their receivers and have been for awhile now. I've been sold on Iceamps since owning my SC07. I love the sound of my D-Sonic amp on my 12s. Very good performance.
    Shoot the jumper.....................BALLIN.............!!!!!

    Home Theater Pics in the Showcase :cool:

    http://www.polkaudio.com/forums/showcase/view.php?userid=73580
    · Share on FacebookShare on Twitter
  • polkfarmboy
    polkfarmboy Posts: 5,703
    I have a nice Wyred 4 Sound sx 500 ice amp and a pair of sx1000 500 watt mono block ice amps for sale
    · Share on FacebookShare on Twitter
  • polkfarmboy
    polkfarmboy Posts: 5,703
    lupavalo wrote: »
    Sherardp wrote: »
    I started out with Outlaw M2200s powering my RTi12s. They are very nice amps for the buck. I personally love IceAmps like Wyred4Sound and D-Sonic. Check this out.

    http://app.audiogon.com/listings/solid-state-d-sonic-500-s-class-d-2014-08-05-amplifiers-11231-brooklyn-ny

    But, with nearly that money I can buy an amplifier type a/b which is supposedly better than the type d??

    Whats is your opinion about the amplifier tyype d??

    Ice amps are not all the same, read up on belcanto.
    · Share on FacebookShare on Twitter
  • Irrenhaus
    Irrenhaus Posts: 1,090
    edited August 2014
    Hi

    I have the RTI12's and I first got the Parasound 2125 and it did okay but never went too loud. I then got an Adcom 585 and it works great with the 12's both amps are on the warm side and that is good for the 12's. I have read in many places that the Emotiva will be a bit bright and the 12's also are on the bright side.

    Cheers
    HTAVR-Pioneer SC99XPA-DR3 Differential Reference AmpPolk R-700Rear- RT150Side- RT150Center-CSi5Sub-Rythmik audio F25Player- Panasonic DP-UB9000Projector- Optoma CinemaX P2Screen- Silver Ticket Products STR Series 6 120"Audio Room 2ch rig.Cary AE-3, Onkyo M-504, Marantz SA8005, Azur 851NWharfedale - Linton, SVS SB12-NSDMinis Forum PC (streamer) and Panamax MX5105Headphone rig;Schiit JOTUNHEIM and different headphones.Samsung 42" flat screen TV.
    · Share on FacebookShare on Twitter
  • Sherardp
    Sherardp Posts: 8,038
    polkfarmboy wrote: »
    I have a nice Wyred 4 Sound sx 500 ice amp and a pair of sx1000 500 watt mono block ice amps for sale

    For the most part they will have similarities across the board. Performance will vary from manufacturer to the next. I'd agree with that, but some of the top ones would be Bel Canto, W4S, D-Sonic, Red Dragon.
    Shoot the jumper.....................BALLIN.............!!!!!

    Home Theater Pics in the Showcase :cool:

    http://www.polkaudio.com/forums/showcase/view.php?userid=73580
    · Share on FacebookShare on Twitter
  • pearsall001
    pearsall001 Posts: 5,068
    The D-Sonic amps are fabulous. Dennis uses a new module from Abletec for his 2 channel, mono blocks, & the L/R main channels in his multi-channel amps. He still uses the ICE Modules for his surround channels though.
    "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.
    · Share on FacebookShare on Twitter
  • mufsoman
    mufsoman Posts: 631
    lupavalo - I sent you a PM regarding the Rotel amp. Don't want to derail this thread. Thanks
    Parasound HCA-2003A & 2205A
    Front: Rti12's
    Center: Csi A6
    Side surrounds: Polk Rti A1's
    Atmos: Mirage Nanosats
    APC H15
    Power cords by Pepster, Morrow MA4 IC's, AQ Midnight, AQ Chocolate HDMI's[/SIZE]
    The rest is TBD.
    · Share on FacebookShare on Twitter
  • Irrenhaus
    Irrenhaus Posts: 1,090
    edited August 2014
    I think the thread is a bit derail with the ICE amp comments good info by the way. But I have seen threads like this one get a lot of advise for the OP from Polkies on this site, but this new format really sucks and does not help anyone.

    Not even Polk I don't think they know how low they are gone. If you do a search on google now for lets say Polk SDA SRS the fist hits are from AudioKarma what happened to Polk Audio Forum they always the first one's and with the correct info and created new customers

    My advice for those RTI12's if you can find a pair of Adcom's 565 just get them and enjoy them..................Cheers.......:')

    Lets get back in and help the OP.
    HTAVR-Pioneer SC99XPA-DR3 Differential Reference AmpPolk R-700Rear- RT150Side- RT150Center-CSi5Sub-Rythmik audio F25Player- Panasonic DP-UB9000Projector- Optoma CinemaX P2Screen- Silver Ticket Products STR Series 6 120"Audio Room 2ch rig.Cary AE-3, Onkyo M-504, Marantz SA8005, Azur 851NWharfedale - Linton, SVS SB12-NSDMinis Forum PC (streamer) and Panamax MX5105Headphone rig;Schiit JOTUNHEIM and different headphones.Samsung 42" flat screen TV.
    · Share on FacebookShare on Twitter
  • F1nut
    F1nut Posts: 50,566
    polkfarmboy wrote: »
    Ice amps are not all the same, read up on belcanto.

    Me likey some BelCanto.

    I agree with Tony, bridged amps don't sound good.

    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

    · Share on FacebookShare on Twitter