opaqueice;247236 Wrote:
>
> They are not discrete.
A pure tone is a discrete frequency - you say tone, I say discrete
frequency.
opaqueice;247236 Wrote:
>
> The measurement technique is not the same, that's true.
> And if the measurement techniques are not the same, then the results are
not d
Surely the test of any "improvements" to any piece of equipment is if it
plays music well to produce a more enjoyable sound.
This assumes the modifications meet a basic measurable standard.
If the above were not true then nobody would buy any valve gear.
I believe that empirical work is very im
Patrick Dixon;247131 Wrote:
>
> I understand Fourier quite well:
You certainly don't give that impression.
> I said that music is made up of many discrete frequencies which occur at
> the same time, which is perfectly consistent with Fourier.
They are not discrete.
> Most audio equipment is
Surely impulse response is the same as wide bandwidth.
An impulse signal has a short rise time and the shape of the wave means
high frequency components.
if the equipment tests well with single frequencies up to say 40kHz
then it should deal with any audible impulse signal.
--
mudlark
SB3>Cy
Patrick - aren't you going to define "measure flat" - by what method?
If its impulse response is flat then it is...flat? (isn't it)
If not, then the whole notion of impulse based response modelling is
wrong?
Phil
--
Phil Leigh
You want to see the signal path BEFORE it gets onto a CD/vinyl...i
For the record
I understand Fourier quite well: I've been designing digital filters
for many years. The ultimate customers of products I've designed
include all the major broadcasting companies in the world.
I said that music is made up of many discrete frequencies which occur
at the same time,
Quite.
Mike.
--
mudlark
SB3>CyrusDACX>PreXvs>NAP140+260A>KEFiQ7, Avondale and Naim cable,
Kubuntu Gusty Gibbon server, linkstation for storage.
DIY SB3 3A linear power supply.
Using SqueezeCentre7
mudlark's Profile: htt
mudlark;246919 Wrote:
> Some of the above posts are classic myth creation.
>
> Just to satisfy my curiosity, how does the SB output a reduced bass
> response when used in my context. I use the SB into an external dac via
> the optical connector?
>
> Mike.
I doesn't!!! It simply can't.
Als
Some of the above posts are classic myth creation.
Just to satisfy my curiosity, how does the SB output a reduced bass
response when used in my context. I use the SB into an external dac via
the optical connector?
Mike.
--
mudlark
SB3>CyrusDACX>PreXvs>NAP140+260A>KEFiQ7, Avondale and Naim ca
Patrick Dixon;246853 Wrote:
> I definitely don't agree with this. However flat the SB3 measures, it
> sounds bass light on real music to me.
Patrick - you've rather lost me there...if it measures flat...then it
is flat - surely?
Phil
--
Phil Leigh
You want to see the signal path BEFORE it g
chobbney;246851 Wrote:
> Phil,
>
> Thanks for that. I might see if I can demo a DAC (with optical
> connection) at home.
>
> Am I right to think the X-DAC v3 uses a power supply, rather than an
> IEC?
The MF dac comes with a "wall-wart" PSU - you can add on the X-PSU
later (it is a big transf
chobbney;246892 Wrote:
> What's an SB+?
It's a rather expensive mod for the SB3 done and sold by... you
guessed it, Patrick Dixon.
So when you read comments like this, you can be absolutely certain
they're unbiased:
Patrick Dixon;246852 Wrote:
> I think you should consider the Transporter or
Patrick Dixon;246852 Wrote:
> I think you should consider the Transporter or SB+ rather than spending
> fairly large sums on external DACs and PSUs. IMV, you are quite likely
> to end up spending a grand, without actually achieving what's possible
> for that amount of money.
>
> I've heard the
Robin Bowes;246890 Wrote:
>
> But real world systems are not linear, and an under-powered PSU can
> often cause problems at low-frequencies. Which is all Patrick said.
>
That doesn't sound anything at all like what Patrick said. But since
it's actually concrete, let's address it.
So you thin
opaqueice wrote:
> Patrick Dixon;246878 Wrote:
>> But measuring equipment using single frequencies, doesn't actually
>> measure the frequency response as it applies to music. A (bandlimited
>> if you like) impulse response would be more appropriate.
>
> There you go again - more nonsense. For a
Patrick Dixon;246878 Wrote:
>
> But measuring equipment using single frequencies, doesn't actually
> measure the frequency response as it applies to music. A (bandlimited
> if you like) impulse response would be more appropriate.
There you go again - more nonsense. For a linear system the imp
opaqueice;246876 Wrote:
>
> In fact, as most of us learned in high school, any sound can be
> decomposed into a sum of pure tones, which add *linearly*, period, end
> of story. Hmm, I think that's what I said ...
opaqueice;246876 Wrote:
> If the frequency response of an amp and speakers is fla
Patrick Dixon;246868 Wrote:
> Music is a combination of many frequencies all occurring at the same
> time, whereas a frequency sweep just does one frequency at a time.
> Hence you can have equipment that measures flat with a frequency sweep,
> but actually isn't with real music.
Isn't it stran
darrenyeats;246867 Wrote:
> The biggest factors in bass response are the speaker response and
> room-modes. It doesn't make sense to try to correct these by using a
> source with a different bass response. What we want is sources which
> are accurate, including a flat FR, and then we can deal wit
Patrick Dixon;246853 Wrote:
> I definitely don't agree with this. However flat the SB3 measures, it
> sounds bass light on real music to me.
The biggest factors in bass response are the speaker response and
room-modes. It doesn't make sense to try to correct these by using a
source with a diffe
Phil Leigh;246777 Wrote:
> The SB certainly goes down as deep as any CD player as far as bass
> extension goes.
I definitely don't agree with this. However flat the SB3 measures, it
sounds bass light on real music to me.
--
Patrick Dixon
www.at-tunes.co.uk
---
I think you should consider the Transporter or SB+ rather than spending
fairly large sums on external DACs and PSUs. IMV, you are quite likely
to end up spending a grand, without actually achieving what's possible
for that amount of money.
I've heard the SB+ against a fairly inexpensive Creek CD
Phil,
Thanks for that. I might see if I can demo a DAC (with optical
connection) at home.
Am I right to think the X-DAC v3 uses a power supply, rather than an
IEC?
--
chobbney
chobbney's Profile: http://forums.slimdevic
The Sugden is a fine amp (I'm not familiar with your speakers). The SB
certainly goes down as deep as any CD player as far as bass extension
goes. I think you should look at a DAC (not necessarily the Benchmark -
something closer to the Creek family sound would be an MF DAC (X-DACv3's
are cheap no
chobbney;246732 Wrote:
> 'Like projecting a low-res image on a high definition screen' as the guy
> from the hi-fi shop said.
>
For me this sums up the argument. IME it isn't like that - because
everyone agrees they can see the difference between an SD and HD
picture but not everyone can hear
The class A amp + speakers I have are wonderfully expressive. The amp
opens up a huge soundstage with amazing detail and the speakers have
tremendous range. Consequently they reveal any problems with the
source. 'Like projecting a low-res image on a high definition screen'
as the guy from the hi-f
My system doesn't shout at me what the source is.
The SB3 is as below.
My cd player is an Arcam 93 using the Cyrus DAC.
I've tried the SB3 powersupply on and off and I can't tell the
difference. My power supply is the convel 3A supply from RS Farnell
which is quite similar to the one you use.
Mike/Zanash , that's incredibly generous of you, but Cumbria/East
Midlands is too far to ask you to travel. But I greatly appreciate the
offer.
The PSU I had built is RS part 173-1604 inside an old computer PSU box
(which already has the IEC inlet) and connected to the original
Squeezebox DC cab
Again I'm in the east midlands so could drop over I've just posted
up my effort in the diy section.
I found that my psu makes quite a large step forward over the wall wart
...so I'm a bit at a lost to know why the other chap thinks it will make
no difference ?.
What you really notice is the
Hi,
I use a sb3 with an openframe power supply and toslinked Cyrus dacX.
If you are really stuck I might be able to visit.
Mike.
--
mudlark
SB3>CyrusDACX>PreXvs>NAP140+260A>KEFiQ7, Avondale and Naim cable,
Kubuntu Gusty Gibbon server, linkstation for storage.
DIY SB3 3A linear power supply.
We had a total rewire about 13 years ago - I doubt it's anything to do
with that.
Yes the SB was was connected to the Amp when the sound went flat.
I'd like to try a DAC (+ Toslink) to see what happens, but I don't know
anyone with one. I'll ask around.
Thanks again for your help.
--
chobbne
chobbney;246551 Wrote:
> >I presume you've disabled all file formats apart from FLAC-FLAC or
> FLAC-WAV?
>
> I have now.
>
> The CD player sound went flat when I plugged the PSU in and it was
> connected to the SB. I didn't try it when it wasn't sonnected to the
> SB. I've no longer got the Cre
>I presume you've disabled all file formats apart from FLAC-FLAC or
FLAC-WAV?
I have now.
The CD player sound went flat when I plugged the PSU in and it was
connected to the SB. I didn't try it when it wasn't sonnected to the
SB. I've no longer got the Creek, so I can't test it. My current
(chea
chobbney;246541 Wrote:
> Thanks for the info - I'll have a look at your power recommendations.
> The Russ Andrews stuff looks intresting.
>
> I have a low-noise linear psu for the SB at the moment, and just having
> that plugged in affects my system. It may be that a DAC would improve
> the sou
Thanks for the info - I'll have a look at your power recommendations.
The Russ Andrews stuff looks intresting.
I have a low-noise linear psu for the SB at the moment, and just having
that plugged in affects my system. It may be that a DAC would improve
the sound (I'd certainly hope so) but unles
You're going to get a get a few comments about this, but for
starters...the internal PSU arrangements of the SB are such that
plugging in a mega-bucks PSU such as the Wellbourne is not going to
make any real difference over the Farnell unit, since regardless of the
external PSU the internal regs w
Quick question:
Is there anyone anywhere near the Manchester/Stockport area of England
with a *good* low-noise PSU that would be willing to bring it to my
home so I can hear any difference? I'm thinking of at least a Welborne
or something that is dedicated for the Squeezebox. I'd be willing to
pr
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