1. Join Now

    AVForums.com uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Power Amp Dilema!

Discussion in 'AV Pre-Amp/Processors & Power Amps' started by Kazman, Feb 3, 2005.

  1. Kazman

    Kazman
    Well-known Member

    Joined:
    Jan 14, 2004
    Messages:
    5,252
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    86
    Location:
    Luton, Bedfordshire
    Ratings:
    +136
    In the opinion of the wise people here, which would be a better solution.

    Two stereo power amps and a monobloc, or a 5 channel power amp?

    Does a decent 5 channel power amp have the ability to supply constant, stable, effortless power to all channels as well as seperate stereo or mono power amps?
     
  2. Audionyx

    Audionyx
    Active Member

    Joined:
    Dec 10, 2002
    Messages:
    667
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    21
    Location:
    East Yorkie Porky
    Ratings:
    +20
    The ability of any amplifier is largely due to the power supply. Well designed multichannel amps will have headroom in this department to feed the circuits. Obviously mono amps have a power supply per channel though some one-box amps use this topology. To get an idea of an amplifiers performance under load, check out all channels driven figures against single channel figures. If the difference is huge you can tell that the power supply is perhaps under stress at times.

    If money is no object then indeed 7 high current amplifiers would be my choice though this would require dedicated circuits and extremely good ventilation.

    Great solutions include Rotel, Nad, Primare, Arcam, Classe, Tag, Bryston, Chord, Krell, Levinson.... all using variations on the topology.

    Ultimately it boils down to size of room and power required. There is a "house sound" to take into account ensuring compatibility with your other kit. Oh and BUDGET!!
     
  3. Kazman

    Kazman
    Well-known Member

    Joined:
    Jan 14, 2004
    Messages:
    5,252
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    86
    Location:
    Luton, Bedfordshire
    Ratings:
    +136
    Thanks for that matey :)

    This is the next step for me, and it won't be until later this year anyway.

    I'm thinking either Parasound or Rotel, just wondering which house sound would work best with the Quads. I like a warm side of neutral type sound, and overly bright amplification really doesn't appeal to me.

    Budget will be between £1500-£2500, might stretch it if the equipment is worth it.

    Reccomendations? Current size of room is 10mx4.5m, but, this will change when we move house, which we intend to do in the summer hopefully.
     
  4. Roam

    Roam
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Warm side of neutral sounds like NAD would suit well, going on my C320BEE amp experiance anyways. The T973 beast has seven channels of 140 realistic watts (probably underrated) and you may be able to biamp your fronts if using 5.1 if it's possible to configure your pre-outs that is (maybe tricky). One for the shortlist!
     
  5. isko

    isko
    Standard Member

    Joined:
    Aug 29, 2004
    Messages:
    26
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    1
    Ratings:
    +0
    I recommend Rotel. I am using RMB-1075 (5ch power amp) of Rotel which has genuine 800 watt transformer. It has a cyristal clear net sound even in very high volumes no hiss at all.
     
  6. Audionyx

    Audionyx
    Active Member

    Joined:
    Dec 10, 2002
    Messages:
    667
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    21
    Location:
    East Yorkie Porky
    Ratings:
    +20
    Have listened to:

    Parasound Halo A51 (5) - slightly warm sounding but very powerful amp (250W)

    Arcam P7 - (7) very detailed, musical amp but lower powered than Parasound (160W)

    Rotel 1075 (5) - the best entry into high end separates though rounded at the frequency extremes (120W)

    Nad S250 (5) - good clean amplifier though no longer available (125W)

    Musical Fidelity M250 - great mono amps - bags of power and usual MF cleanliness (250W)

    Tag 100:5r (5) - clean but a tad clinical (mechanical) to my ears

    Bryston 9B ST (5) - superbly built, bombproof truthful amp though only 120W P/Ch

    Musical Fidelity A3.2 * 3 - wonderfully musical amplifier, would need three for 5(6).1 system (130W)

    Linn 5125 (5) - sweet sounding amp from one of Uk's best loved (125W)


    There are many, many more to suit budget but given your speakers and room I would look at 3 * MF A3.2 power amplifiers for the best of both worlds! Do DEMO any kit as I can't stress enough the impact of room acoustics and partnering kit - good luck!
     
  7. Kazman

    Kazman
    Well-known Member

    Joined:
    Jan 14, 2004
    Messages:
    5,252
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    86
    Location:
    Luton, Bedfordshire
    Ratings:
    +136
    Thanks for all the help guys, gives me a starting point to go from.

    I do like the appearance of the Parasound Halo A51 (very WAF which is also an important factor, the SVS was my last WAF veto token), will definitely look at the Musical Fidelity too. I'm more concerned with quality of sound rather than outright power, so not fussed if the power rating per channel are low, just as long as they can sustain that power without difficulty.

    No one has mentioned Primare, how do their products rate against what has been mentioned above?
     
  8. Philly112

    Philly112
    Well-known Member

    Joined:
    Oct 17, 2003
    Messages:
    4,176
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    136
    Location:
    Frodsham
    Ratings:
    +1,473

    My wife didn't break out into an uncontrollable grin when it suddenly appeared in the house

    Phil
     
  9. Kazman

    Kazman
    Well-known Member

    Joined:
    Jan 14, 2004
    Messages:
    5,252
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    86
    Location:
    Luton, Bedfordshire
    Ratings:
    +136
    My wife isn't bothered about things being large ;)

    She actually thinks the SVS PC Ultra looks 'cool' now :D She will love the blue light on the power button.....easily pleased :D
     
  10. recruit

    recruit
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Kazman - The A51 is Big but the power is truly massive and you can sense it or should i say feel it in the room, when i heard Rags it was absolutely effortless.

    Brilliant Amp :thumbsup:
     
  11. dynamic turtle

    dynamic turtle
    Active Member

    Joined:
    Mar 23, 2004
    Messages:
    1,501
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    41
    Location:
    Central London
    Ratings:
    +17
    Unless plug sockets are in short supply, you can't go wrong with monoblocks. They're the ultimate in flexibility terms too. Otherwise, 3 stereo power amps. The "spare" channel should be just that, in case you upgrade to 6.1 one day.....

    Loads of good amps listed above, except:

    Copland CVA535 (5 channel, 125 wpc, £2000). Lovely jubbly!
    Audio Analogue Donzetti Mono's (£525 each). Good value.
    Crimson 640 Mono's (200W, £650 each)
    Primare A30.5 (£1700)
    Roksan Caspian 5 Channel (£1300)

    DT
     
  12. liamjf

    liamjf
    Member

    Joined:
    Dec 20, 2002
    Messages:
    274
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Location:
    LONDON
    Ratings:
    +8
    Anywhere in London where you can dem the Parasound amps?
    Liam.
     
  13. marck

    marck
    Standard Member

    Joined:
    Jul 10, 2002
    Messages:
    600
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Location:
    London
    Ratings:
    +1
    I used to own the Copland CVA 535 and was very impressed with it. Just that the upgrade bug hit, and I changed it for a Krell - but then it all comes down to budget! Well worth a listen to though.
     
  14. avanzato

    avanzato
    Active Member

    Joined:
    Jan 21, 2003
    Messages:
    1,874
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    51
    Location:
    Norfolk
    Ratings:
    +60
    Well as it's a config that's not been mentioned yet I have a 2 channel and a 3 channel power amp. They're Consonance Opera C-200 & C-300 which look very much like the hegel H series amps but in black, not sure how deep the similarities go. TBH I'm not sure if they are still available as I got them Ex-Dem direct from the distributor Alium Audio
    I feel they are neutral in character with very high build quality and there's no problem driving my 4ohm Jamo THX speakers with the wee beasties (actually they're flippin big). The 2 channel does Left/right and the 3 channel does the rest.
     
  15. Daneel

    Daneel
    Active Member

    Joined:
    Dec 5, 2002
    Messages:
    2,813
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    68
    Location:
    London
    Ratings:
    +26
  16. Kazman

    Kazman
    Well-known Member

    Joined:
    Jan 14, 2004
    Messages:
    5,252
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    86
    Location:
    Luton, Bedfordshire
    Ratings:
    +136
    I heard some Roksan Caspian mono's on Saturday, they were fabulous!! http://www.avland.co.uk/roksan/caspianpowerm/caspianpowerm.htm

    Anybody else heard these? Only 100watts each, but, the sound was lovely, effortlessly driving some Tannoy Sensys floorstanders. The speakers were probably not doing the amplification justice though, but the sound was certainly impressive.

    How would these compare to the Primare or Parasound amps mentioned above? And the Rotels of course :D.
     
  17. rags

    rags
    Well-known Member

    Joined:
    Apr 13, 2003
    Messages:
    4,086
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    106
    Location:
    London
    Ratings:
    +299
    Kazman,

    As your not to far you more than welcome to come down and hear the Parasound in action. I am waiting for my new speakers and sub to arrive but they should be here in a few days. Whilst I have not heard the Roksans you can forget the Rotels. Good amps for the money but the Parasounds are better (I used to own a Rotel 1095)
     
  18. Kazman

    Kazman
    Well-known Member

    Joined:
    Jan 14, 2004
    Messages:
    5,252
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    86
    Location:
    Luton, Bedfordshire
    Ratings:
    +136
    Excellent :)

    PM when you get your new speakers matey :)
     
  19. rags

    rags
    Well-known Member

    Joined:
    Apr 13, 2003
    Messages:
    4,086
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    106
    Location:
    London
    Ratings:
    +299
    No problem will drop you a PM.
     
  20. lovegroova

    lovegroova
    Well-known Member

    Joined:
    Jul 15, 2002
    Messages:
    2,519
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    103
    Location:
    Herts
    Ratings:
    +293
    Just to add that I preferred the Rotel 1095 to the Parasound - horses for courses really, they are both very good indeed.
     
  21. Daneel

    Daneel
    Active Member

    Joined:
    Dec 5, 2002
    Messages:
    2,813
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    68
    Location:
    London
    Ratings:
    +26
    To which Parasound?
     

Share This Page

Loading...