Re: audio amplifiers for PC's

gaurav.patil@xxxxxxxxx wrote:
> Pooh Bear <rabbitsfriendsandrelations@xxxxxxxxxxx> wrote in message
news:<4263CFD4.66402196@xxxxxxxxxxx>...
> > gaurav.patil@xxxxxxxxx wrote:
> >
> > > Hello,
> > > I am looking to design a digital audio amplifier for my
> > > computer.My computer has a built in sound card which does not
produces
> > > good sound effects more over i have low end 2.0 mercury speakers
which
> > > makes the sound more worse.can any one please tell me about some
sites
> > > where i would get complete circuit diagrams for desigining such a
> > > digital amplifier.
> >
> > Why do you think a *digital* amplifier would be any better ?
> >
> > > Also any design ideas from members is welcome.But to be
precise i
> > > want something that has great sound quality(rather must have
superb
> > > sound quality),with some features like digital bass boost,sound
> > > synthesis,surround sound etc.I know with all these features the
> > > circuit might become expensive but if any one can help me by
> > > suggesting something that can include all these features and
still
> > > economical will be really nice.
> >
> > Those features aren't included in any 'digital amps chips' or
chipsets
> > that I know of - that needs separate DSP.
>
> would you please elaborate more on such DSP's
> >
> > Yourt obsession with *digital* is illogical. Class D amps are used
for
> > power efficiency not sound quality. The better Class D amps are
getting
> > close to mid / low high end range analogue audio quality now
though.
>
> So how should i improve the sound quality
> >
> > >
> > > Just to remind that i want this circuit to be placed between
my
> > > pc and speakers i cant afford to replace either of them.
> >
> > Buy a cheap 2nd hand hi-fi amp off ebay.
> as i said i want to make it at home ,so i need a design that will
> allow me to interface this circuit(amplifier)with pc's audio out and
> my speakers
> >
> > Graham


Start by forgetting digital, its not what you want. Theyre much more
complex, more money, and generally lower sound quality.

3 options:

1. buy a ready made home stereo amp and use it
2. construct a pair of amps around an audio amp IC of your choice
3. Make a very low cost but good sounding amp from power trs, and opamp
and a few bits. Minimal cost, good sound, but no short protection.

It depends first on how much power you want. Then on what money youve
got. Then on whether youve got any of the parts already, eg power
supply.

Very rough costs:
for a 1-2 watt rms per channel discrete amp, £2
for a 50wpc IC amp, £40 and much more work

Bass boost is easy to add using RC in the feedback loop. The other
gizmos, I'd forget em and concentrate on getting decent sound.


NT

.

Relevant Pages

  • Re: A reasonable argument against double blind tests?
    ... proclamations on the electrical design of components, and I certainly never said it did. ... However, one does not need to be an "authority on electronics" to see the silliness we have with certain attributes of high-end, "serious" audio. ... However, many of those amps are much more expensive than necessary to do the job, and I think it is the duty of journalists to point out that fact to potentially gullible readers. ... certainly a concerned audio buff would be wise to take some time to learn a bit about the sound of components. ...
    (rec.audio.opinion)
  • Re: How safe operating an amp with no fuse?
    ... sound as good as any of the amp/pre amp combinations. ... oh derisive ignorant? ... and in the audio path. ...
    (rec.audio.tech)
  • Re: How safe operating an amp with no fuse?
    ... sound as good as any of the amp/pre amp combinations. ... oh derisive ignorant? ... and in the audio path. ...
    (rec.audio.tech)
  • Re: A reasonable argument against double blind tests?
    ... The problem with audio is that people believe their ears more than they ... many of those amps are much more expensive than ... so they will perceive the sound as being better. ... one has to deliberately design a different amplifier to make it sound ...
    (rec.audio.opinion)
  • Re: Dont buy new speakers for DCS systems!?
    ... Martin and I did and use a separate little amp>:-) Oh and you should ... add a 10k to 15k resistor at R33 on the audio board. ... I found with just new speakers you will be disappointed if the bass ... that the original sound samples weren't really worthy of any ...
    (rec.games.pinball)
Quantcast