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2x 2-channel= 4-ch amp recommendations please

Discussion in 'AV Receivers & Amplifiers' started by Rob.Screene, Mar 29, 2004.

  1. Rob.Screene

    Rob.Screene
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    Hi,
    I've got a Linn Aktiv Crossover box for my Linn Keilidh floorstanders in order to active bi-amp them.

    I need 4-channels of amplification (of equal gain), 2 for the bass, 2 for the tweeters. Very high quality music playback is my requirement, budget £500-£900. The passive crossovers in my Keilidhs will be disconnected, leaving each amp channel a direct connection to each speaker driver.

    I currently run the Keilidhs off a Denon A10SE, but I won't be able to use that with the Linn Active configuration.

    The secondhand prices for Linn power amps seem very high at the moment, so I'm looking for alternative recommendations.

    The 2 channels for bass don't have to be identical to the treble ones, but have to be identical gain, so I'm probably looking at a pair of good 2-channel amps ot a 4-channel+ power-amp.

    A 5-channel Parasound is available new at only a few hundred quid more than a pair of older s/h Linn amps, I'd also get a freebie 5th channel to run my Kef 200C Reference center, which would mean I can sell my Denon POA-T10 2-ch power amp.

    I understand Active operation relieves some of the strain off the amps and gives an efficiency boost, as well as using . I'm looking for quality, not necessarily more power than I'd need.

    Anyone compared a Parasound amp for critical 2-ch Music playback?

    Your experience and comments appreciated.
    regards,
    Rob.
     
  2. Reiner

    Reiner
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    You can use any multi-channel power amp or 4 mono blocks, too. Or 2 stereo power amps (add another POA-T10?). See also below.

    If you want to ensure same gain using two stereo power amps with different power ratings you probably want to stick to one manufacturer.

    Some would say that replacing the current amp with a better model would yield the same result as bi-amping.
    Since you are replacing the existing amp you may want to consider this as an alternative.
     
  3. Rob.Screene

    Rob.Screene
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    Thanks Reiner,
    I'm not talking about normal bi-amping here. I'm talking about moving the crossovers to before each amp.

    From what I've read going active bi-amped is a bigger benefit than a better 2-ch amp, because it removes the speaker's passive crossovers from the playback chain.

    thanks and regards,
    Rob.
     
  4. Reiner

    Reiner
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    Dunno about introducing an active cross-over, something I heard about (car hifi) but it's not common for AV systems.
    Might be worth a try but the comments on the amps in general remain valid (same gain recommended).
     
  5. parky43007

    parky43007
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  6. parky43007

    parky43007
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    Why didn't the link come out?
    Anyway, the offer is at *************.
     
  7. parky43007

    parky43007
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    crt projectors
     
  8. Rob.Screene

    Rob.Screene
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    I think that's the swear filter being overactive.

    Thanks for the advice guys.

    I have bought another Denon POA-T10 power-amp to mirror the one I have. 2x 120W THX power per speaker and their specs look good in print!

    Active bi-amping is mainly a Linn hi-end hi-fi thing, in addition to active studio monitors which include the active crossover and amplification in each speaker.

    I suspect the Parasound would have worked as well if not better, but as I already had a POA-T10 and they are rarely available, I snapped up the second one.

    I've connected up the amps via the Linn Active Crossover, I now have to follow crossover mod steps on the Keilidh passive crossovers to bypass them.

    I'll listen to that for a while and decide if I want so go a more conventional hi-fi power-amp route, as I'm sure the POA-T10's would be appreciated by any Denon AV amp owner in future.

    cheers,
    Rob.
     
  9. parky43007

    parky43007
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    By the way Rob,
    I run an HC set up( Espeks, trikan, katan) active. I found the improvement over passive to be absolutely immense! :)
     
  10. Rob.Screene

    Rob.Screene
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    That's 5 speakers active bi-amped, i.e 10-amp channels?

    Wow.

    Rob.
     
  11. SamirP

    SamirP
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    That would be me then Rob ;) it would be right for my surrounds

    I currently bi-amp my fronts with a POAT's but this in a non-activ set up,
     
  12. parky43007

    parky43007
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    I use 2 5125's.

    6 channels for the Espeks active
    2 channnels for the Trikan centre active and 2 passive channels for the rear katan's.

    Sounds ok!:smashin:
     

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