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WTD, Enquiry- high powered monobloc

Discussion in 'AV Receivers & Amplifiers' started by nathan_silly, Apr 10, 2003.

  1. nathan_silly

    nathan_silly
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    I need a high powered monobloc capable of driving 4 Ohm load (subwoofer driver) At least 500W into 4 Ohm, low distortion.

    Anyone got a monobloc with that spec?

    I'm just enquiring for now, as I need to find out if lots of people have enough around, otherwise I'll order a new amp.

    Not sure if a poweramp with a gain control reduces sound quality, but would be useful if the mobobloc has one- or maybe a -10dB, 0, +10dB switch will do.

    Cheers.
     
  2. Steve.EX

    Steve.EX
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    Thats 1000w stable to 2 ohms - phew!
    Gonna cost more than a fiver!

    Steve
     
  3. 50/50

    50/50
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    suppose you could use an in car amp. Just modify it to use a normal power socket.

    I believe NAD C370 can handle 600w 4ohm bridged. But Im not sure if could accually cope with such a job.
     
  4. MuFu

    MuFu
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    That is what I was going to suggest as well. Plus the C-series amps are renowned for being very good with lower-range transients. AudioVision have as-new, graded models for £319.

    MuFu.
     
  5. nathan_silly

    nathan_silly
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    I would not bridge the amp....

    "However, do not bridge the amplifier to drive the single sub in this case. Bridging reduces the ability of an amplifier to drive low impedances, and when I ran my Carvin power amplifier (also a touring amp) in bridged mode with the SVS at high volume, I burned it up. So, if you have the stereo amp and one sub, just drive it with one of the amplifier channels."

    Quoted from Home Theatre Hifi mag.
     
  6. MuFu

    MuFu
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    NAD have changed their site recently, but I recall the C370 specs listing 70 amps and over 1kW/channel into a 1 ohm load. Bridged, dynamic power is about 800W into 4ohms. The power section is pretty impressive - same as the C270.
     
  7. nathan_silly

    nathan_silly
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    Thanks for your info, but I would not want a integrated amp -input switching etc- maybe just a poweramp with a small pot - round the back- just to trim the level out.

    Don't think the Nad 216 is good enough (in standard mode)
     
  8. chips

    chips
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    I think this would be better off in the Amplifier Forum......moving.
     
  9. MuFu

    MuFu
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    How about the C270?

    Thing is - usually the C370 is cheaper (due to it being more popular, I guess). Plus you can use it as a "pure" power amp by removing a couple of jumpers at the back, totally bypassing the pre. Pretty much identical to a C270 then.

    MuFu.
     
  10. MuFu

    MuFu
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    BTW - I don't work for NAD. :D Used to have a C370 and IMO there aren't many quality amps with as good a W/£ ratio.
     
  11. nathan_silly

    nathan_silly
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  12. chips

    chips
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    I think those are the ones that SVS recommend for use with their subs ;).
     
  13. micb3rd

    micb3rd
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    WOW that company based in Letchworth, that is only a 10 min drive form me.

    Thanks for the link, I have been looking for a decent local place for good amplification.
     
  14. EvilMudge

    EvilMudge
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    ES Lab were going to do a 1000W into 8Ohms monobloc, but it seems to have slipped under the radar.

    Best give Horsham HiFi a ring, see if they know anything, they appear to be ES Lab's main dealer.
     
  15. Steve.EX

    Steve.EX
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    Nathan.
    I see you have edited your post to remove the 2 ohm requirement thus making my post seem 'drunkenly contrived"

    Steve
     
  16. nathan_silly

    nathan_silly
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    I guess the big drivers do drop down to 2 Ohm during use, but I should have meant 4 Ohm standard, 1 Ohm nominal?
     
  17. alexs2

    alexs2
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    Think you want Krell,Boulder or Levinson here,nathan,if you're planning to get down into the 2ohm range,and many of the ICE type amps sound just about OK in a car,with all the attendant road noise masking the distortion.
    If you really want something of that power level at reasonable cost and stable into low/difficult loads,it may be very difficult to find,although some Class D amps may be suitable from the DIY stores....still think you'll find they come up way short of what you've specified there,as that sort of power and load tolerance is difficult to buy!
     
  18. nathan_silly

    nathan_silly
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    If I'm going down my DIY route (plus a Passive SVS) then maybe a Samson S-1000/Crown K1 is a reasonble option?

    I'm not forking out £10,000+ on a poweramp!!
     
  19. alexs2

    alexs2
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    Nathan,I was only thinking that to meet a reasonable budget,you may have to relax the spec a little!....the Crown amps etc are ok,but basically they're PA amps,and often have sound qualities to match...depends on whether or not you can accept or be happy with that.

    My comments re Krell etc were only to illustrate how expensive it is to match a 1kW into 2 ohm spec...for what it's worth,my Krells will do 800W into 1ohm and also heat the room nicely!
     
  20. nathan_silly

    nathan_silly
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    Thing is, you don't need "Hi-Fi" amp, and what reasonble priced (upto £1500) has 500W- not bridged- into 4 Ohm?

    What do you mean by "and often have sound qualities to match" I've never used PA amps. I mean it's only for a subwoofer, not L/R Hi-Fi speakers
     
  21. alexs2

    alexs2
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    I get your point nathan.....just that I do remember some of Crown's amps as being very much "in yer face" in terms of sound quality,esp the old DC300A.
    It's unfortunately like all these things in that you often get what you pay for...btw,have a look at your thread in DIY...I left a link there that may be useful.
     
  22. nathan_silly

    nathan_silly
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    No-one selling a high-powered 2 channel poweramp?
     
  23. NicolasB

    NicolasB
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    How high-powered do you need? I might be persuaded to sell this Bryston 4B-ST I just bought if you offer me more than I paid for it. Officially rated at 250W into 8 ohms or 400W into 4, or can be bridged to do 800W into 8 ohms. That's probably a little conservative.
     
  24. pwiles1968

    pwiles1968
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    You Can Try a marantz MA6100 www.marantz.com/hifi/europe/, 180W into 4Ohm and £180 at unbeateable, I think they can be bridged, but no leveling POT, does it have to be 500W? There were a couple of MA24's on eBay a few days ago they are only 30W but bags of current apparently they were a couple of grand each when new.
     
  25. nathan_silly

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    What's the RRP of the 4B-ST?

    Having a look now, cheapest I've seen is £1100 for a second-hand.
     
  26. NicolasB

    NicolasB
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    The 4B-ST was recently replaced by the (admittedly better) 4B-SST which sells for £2350. I think the 4B-ST used to sell for £2050 new.
     
  27. MikeK

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    The MF1000 from BKElec would seem to suit your requirements - £261 + delivery, plus some sort of box (DIY perhaps).
     

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