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Class D, Switching, Digital, etc., was: Re: [regsaudioforum] Re: subwoofer crossover

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  • regtas43
    Unless they have some sort of sentimental value(or you are very rich). They do work very well--they just cost a lot. Speakers, room acoustics, DSP EQ...there
    Message 1 of 16 , Aug 1, 2005
      Unless they have some sort of sentimental value(or you are very
      rich). They do work very well--they just cost a lot.
      Speakers, room acoustics, DSP EQ...there are a lot of things to
      spend money on first.

      REG

      --- In regsaudioforum@yahoogroups.com, george day <george@h...>
      wrote:
      > Well, yeah, good point -- the amps stay in place.
      >
      > I really should sell the Mac's, pocket a few grand, get something
      else, and
      > be happy.
      >
      >
      > On 7/31/05 7:52 PM, "regtas43" <regonaudio@a...> wrote:
      >
      > > OK but not better than analogue amplifiers and not predictable
      as to
      > > frequency response in the top end into loads.
      > > You want power and not too big, try Sunfire.
      > > Who cares about big and heavy anyway?(not that SUnfire is so
      heavy)
      > > Do you take your amps to work everyday?
      > > McIntosh is way too expensive in my book.
      > > Try Sunfire or Parasound.
      > >
      > > Don't spend big money--no use.
      > > Save the money for better speakers and DSP room correction.
      > > Sunday evening--more later.
      > >
      > > REG---
      > >
      > > In regsaudioforum@yahoogroups.com, george day <george@h...>
      wrote:
      > >> Speaking of which...
      > >>
      > >> I¹ve been waiting for a discussion of class D, switching, and
      > > digital
      > >> components. They¹ve been getting a lot of good press and,
      > > certainly, there
      > >> are some attractive features (running cool, small size and
      weight,
      > > cost,
      > >> specs on paper). The ICEpower-based amps seem smart and
      > > attractive ‹ if on
      > >> the pricey side ‹ and some others, like the newly-reviewed
      > > NuForce, also
      > >> ³look good.²
      > >>
      > >> I have owned, briefly, a chip amp ‹ the Channel Islands VMB-1 ‹
      > > because I
      > >> heard it on a friend¹s system, found a used set for cheap, and
      > > bought them
      > >> for efficient speakers. Honestly, they were pretty damn good
      and,
      > > had I not
      > >> purchased the Harbeths, I would still have them. I understand
      the
      > > Class D
      > >> 100 watt amp from the same maker is quite good.
      > >>
      > >> Having said that, I have no experience in this area for audio ‹
      I
      > > haven¹t
      > >> even heard Bel Canto stuff, which every reviewer seems to like.
      > >>
      > >> And, having said THAT, I do own a Class D guitar amp (a Clarus:
      > >> http://www.acousticimg.com/products/prod_clarus.html).
      > >>
      > >> It¹s a 300 watt, five-poind box the size of a good hardback and,
      > > while
      > >> lacking classic Fender/tube sound, it destroys classic jazz
      solid
      > > state
      > >> amps. With an archtop, which is what I mostly play, the sound
      is
      > > absolutely
      > >> dead-flat and there¹s enough headroom to knock down a wall with
      a
      > > 2x12
      > >> guitar cab and enough control and dynamics for soft music
      through
      > > a 1x8.
      > >> Extremely impressive, relatively inexpensive ($650 I paid new a
      > > few years
      > >> back), runs cold.
      > >>
      > >> When I compare this to, oh, my room-sized McIntoshes...I have to
      > > wonder
      > >> about future directions.
      > >>
      > >> So, why not ready-for-midrange?
      > >>
      > >>
      > >> On 7/31/05 10:48 AM, "Tom Mallin" <tmallin@p...> wrote:
      > >>
      > >>> I agree. The lower you set the crossover without leaving a gap
      > > between the
      > >>> M30's low end and the subwoofer, the better.
      > >>>
      > >>> The only reason for setting the crossover high would be to
      > > relieve the main
      > >>> speakers of bass duties and I doubt the M30s need that coddling
      > > to play loud
      > >>> enough, the way the Quads do. The further up you cross them
      > > over, the more
      > >>> obvious the position of the sub or subs and the less like
      itself
      > > your main
      > >>> speaker will sound. And with the M30, you really do want as
      > > much as possible
      > >>> of the sound of your main amp driving a Radial cone rather than
      > > some
      > >>> Class-D-not-ready-for-midrange amp driving some heavy-duty
      cone.
      > >>>
      > >>>
      > >>>
      > >>>
      > >>>
      > >>>
      > >>>>>>>>> yipmangmeng@y... 07/30/05 04:57PM >>>
      > >>> For the REL, the X-ver setting has to be low ,not high.
      > >>>
      > >>> m30tubes <fsmillie@p...> wrote:
      > >>>> I've tried every conceivable method of integrating sub(s)
      into
      > > my
      > >>>> previous and current system. I have found that it is "safer"
      > > to cross
      > >>>> lower because too high a crossover point results in muddy
      > > overblown
      > >>>> bass. Remember, you are "exciting" not just the frequencies
      at
      > > the x-
      > >>>> over point, but frequencies higher in value too. Test tones
      > > will prove
      > >>>> my point, but ultimately I settle for what my ears tell me,
      > > YMMV.
      > >>>>
      > >>>> --- In regsaudioforum@yahoogroups.com, "regtas43"
      > > <regonaudio@a...>
      > >>>> wrote:
      > >>>>>>
      > >>>>>> Actually I would try the other way around: higher
      > > crossover, and
      > >>>>>> higher subwoofer setting.
      > >>>>>> It should definitely NOT be true that one gets more "gut
      > >>>>>> wrenching"bass from a full range speaker. Full range
      > > speakers
      > >>>> actually
      > >>>>>> work considerably less well than well integrated
      subwoofers-
      > > -the
      > >>>> right
      > >>>>>> place to drive bass is in the corners.
      > >>>>>>
      > >>>>>> But experimentation is the key. In general however , what
      > > people call
      > >>>>>> bass tends to be much higher in frequency that 30 Hz say at
      > > least for
      > >>>>>> music. (Except for pipe organs and electronic music, there
      > > is little
      > >>>>>> acoustic energy in the bottom octave.)
      > >>>>>>
      > >>>>>> REG
      > >>>>
      > >>>>
      > >>>>
      > >>>
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