[SlimDevices: Audiophiles] Which DACs to use?

2006-01-27 Thread phicar2

I have just hooked up my SB3 via digital optical cable to a Yamaha
RX-V457 reciever (yeah, I know it's not the greatest but I use it to
hook into my in-wall speakers that are in 6 rooms in my house) and I
was wondering if I should use the DACs in the SB3 (which I assume means
I pass the siganl directly to the speakers via Direct Stereo setting)
or use the DACs in the Yamaha?


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[SlimDevices: Audiophiles] Re: Tweaked-SB2, some pictures

2006-01-27 Thread krzys

Michel I can send you copies of my messages if needed.
Chris


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[SlimDevices: Audiophiles] Re: Modifying the Squeezebox 3

2006-01-27 Thread Heimiko

I am seriously considering applying the analog mod (removing opamp,
replacing caps, etc.). However, i'm curious, this probably has an
effect on the headphone output? If I take the left/right straight from
the DAC chip, the headphone output probably fails to function. Am I
correct?


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[SlimDevices: Audiophiles] Re: Modifying the Squeezebox 3

2006-01-27 Thread Heimiko

Thanks for the reply. I would prefer leaving the headphone stage in
tact, as my amp doesn't has a headphone-out. If I would leave the
output stage in tact, but simply cut off the phono plugs, and take them
directly to the DAC (with caps in between ofcorse) would I still have a
major improvement? instead of grouding pin 9, i could use it for ground
for the audio, which is in the specs for the pcm1748. The audio wouldn't
pass the opamp anymore, but would it still influence the signal? since I
also take ground away from it?  any thoughts on this?


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[SlimDevices: Audiophiles] Re: Modifying the Squeezebox 3

2006-01-27 Thread whistler

Heimiko Wrote: 
 I am seriously considering applying the analog mod (removing opamp,
 replacing caps, etc.). However, i'm curious, this probably has an
 effect on the headphone output? If I take the left/right straight from
 the DAC chip, the headphone output probably fails to function. Am I
 correct?

Yes, you disable the headphone output by doing the analog mod.


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Re: [SlimDevices: Audiophiles] Re: Best subwoofer for music under $1000?

2006-01-27 Thread Pat Farrell

Skunk wrote:
pfarrell Wrote: 

If you want to believe that two sources is important for frequency
reproduction of sounds below 40 Hz, I see no point in further
discussion. 



I won't argue that. But do you cross your subs over at 40Hz?


I have one sub. Crossed over about 45 or 50 hz.
I haven't put a 'scope on it to verify the exact value.



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[SlimDevices: Audiophiles] Re: Best subwoofer for music under $1000?

2006-01-27 Thread jonheal

I was recently at a friend's house auditioning his Outlaw Audio LFM-1.
This unit is rated flat to 25Hz. We listened to a variety of music and
also to test tones.

My friend had the subwoofer positioned behind and to the right of us. I
believe he had it crossed-over at 80, or perhaps 100Hz. When he turned
the volume up on the sub (while playing music), I could definitely
percieve an increase in sound energy to my right and behind, not with
pinpoint accuracy, but generally.

Playing test tones was interesting. Unless they've heard a test disc, I
don't think most people realize what a jarring experience it is to
listen to a pure 25Hz tone. It's actually quite uncomfortable,
physically. Furthermore, listening to the range of higher-frequency
test tones revealed that I could change the apparent location of the
source of sound by simply slightly rotating my head or moving forward
or backward a few inches.

I would offer the suggestion that any directionality one percieves from
really low tones, like lowest notes on a pipe organ are due to the
harmonics that are are accompaning it (and making it more palatable). I
think that extended listening to a pure 16Hz tone without the
accompaning harmonics would probably melt your brain, or at least drive
you batty.


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Re: [SlimDevices: Audiophiles] Re: Best subwoofer for music under $1000?

2006-01-27 Thread Pat Farrell

jonheal wrote:

My friend had the subwoofer positioned behind and to the right of us. I
believe he had it crossed-over at 80, or perhaps 100Hz.


That is up in midrange area, so it isn't surprizing that
you could locate it.


Playing test tones was interesting. Unless they've heard a test disc, I
don't think most people realize what a jarring experience it is to
listen to a pure 25Hz tone. It's actually quite uncomfortable,
physically.


Right, down in the 20s, you feel it rather than hearing it.
Many people have never heard clear tones under 30hz.
Most people listen to music in cars over radio, sometimes
even AM, which simply do not have any low frequency signal.

The human ear is amazing, it can fill in signals that are not
really there from the overtones. The classic example is
a telephone, They are only 300hz to 3000hz. All the rest
of the frequencies are added by our brains.




I would offer the suggestion that any directionality one percieves from
really low tones, like lowest notes on a pipe organ are due to the
harmonics that are are accompaning it (and making it more palatable). I
think that extended listening to a pure 16Hz tone without the
accompaning harmonics would probably melt your brain, or at least drive
you batty.


Musical instruments are all about harmonics. That is what makes
a guitar sound like a guitar, a trumpet sound like  a trumpet, etc.
Pure test tones are fairly rare, at least until Sean hacked the
SqueezeBox to include a tone generator.

The classic AR3A speaker was amazing, not because it was flat down below
40 hz, but rather because it got any low frequency sound out of a box
that tiny. They were about 2 cubic feet, a foot by a foot by two feet 
high. That was tiny compared to serious speakers of the time.

It did it using 'acoustic suspension' which required huge amounts of
power to allow such a tiny box to go that low. Thirty years later,
an AR3A would be considered a very large speaker.



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[SlimDevices: Audiophiles] Re: Which DACs to use?

2006-01-27 Thread ajmitchell

I am not trying to be clever, but should you use whichever sounds best
to you? 

Look at it as follows. The DACs in both machines have to cost less than
$100. If you had a high end Yamy Z9 or something the answer would be
more obvious. An external DAC is also an upgrade option. For now, it
must be pretty simple to do a A-B comparison between the analogue and
digital outs and TELL US which sounds best?!

R

alex


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[SlimDevices: Audiophiles] Re: Tweaked-SB2, some pictures

2006-01-27 Thread EnochLight

Michel Fombellida Wrote: 
 
 
 Attached 2 pictures of some other components in my system.
 
 Michel

I love your A/V rack!  What are they called and where can I get `em?


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[SlimDevices: Audiophiles] Re: Tweaked-SB2, some pictures

2006-01-27 Thread Michel Fombellida

krzys Wrote: 
 Michel I can send you copies of my messages if needed.
 Chris

Chris, you have a PM.
Michel


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[SlimDevices: Audiophiles] Re: Which DACs to use?

2006-01-27 Thread phicar2

Well, unfortunately the reason I posted is becuase I tried to do just
such a comparison and quite frankly was having a very hard time telling
any difference.  However, I didn't try every kid of music with all kinds
of ranges (probably A B'd about 10 songs) so I was just wondering if
someone else had some info that could steer me in the right
direction.  I will continue to try and compare and let you know what I
think.  But, I also willing to hear others opinions on the matter...


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[SlimDevices: Audiophiles] Re: Which DACs to use?

2006-01-27 Thread Kyle

There's really no way to know, other than listening.  But I doubt you're
going to find much difference without an equipment upgrade.  You might
also try the digital coax output while you're experimenting.  Some here
have commented it sounds better than optical on their systems. 
Unfortunately, there's no one answer because there are so many
variables, including (and perhaps most important) your own ears and
your own listening environment.


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[SlimDevices: Audiophiles] Re: Recommended inexpensive Linear PSU Wallwart for SB3?

2006-01-27 Thread Chris OH

Hi AF

Are you using the analogue out or spdif?

Chris


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[SlimDevices: Audiophiles] Re: Modifying the Squeezebox 3

2006-01-27 Thread Heimiko

I descided to just go with the flow; Threw away the opamp, removed some
caps, and added some blackgate's. 

And I must say  

 SO much improvement! all sharpness  brightness is totally gone,
much more detail overall. A recommendation for everyone.


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Re: [SlimDevices: Audiophiles] Re: Which DACs to use?

2006-01-27 Thread Pat Farrell

phicar2 wrote:

Well, unfortunately the reason I posted is becuase I tried to do just
such a comparison and quite frankly was having a very hard time telling
any difference.  However, I didn't try every kid of music with all kinds
of ranges (probably A B'd about 10 songs) so I was just wondering if
someone else had some info that could steer me in the right
direction.  


It is important to listen to pieces of music that you like and know 
well. And as much variety as you listen to normally. But if you can't

tell a difference, then there isn't one. Buy what you like,
then listen to music.

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[SlimDevices: Audiophiles] Re: Which DACs to use?

2006-01-27 Thread phicar2

Thanks guys!  I will try the coax as well and see what I think sounds
best...or I guess more importantly what my wife thinks sounds best :-)


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[SlimDevices: Audiophiles] Re: Recommended inexpensive Linear PSU Wallwart for SB3?

2006-01-27 Thread afblaster

Chris OH

spdif out into an Ack! dAck! 2.0  Bryston SP1.7  4B-SST  PMC IB1


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[SlimDevices: Audiophiles] Re: Best subwoofer for music under $1000?

2006-01-27 Thread ezkcdude

I got the Dayton 10 today, and put it together. I must be lame, because
it took me a few hours. Figuring out the spikes took about 30 minutes.
Installing amp took at least 30 minutes, because the damn thing didn't
mount completely flush. I finally settled for it not being perfect, but
it is securely screwed down, and I put some silicone sealant to make
sure no air leaks out. Cutting and placing the acoustic foam took
another 30 minutes or so, but that was kind of fun! The instructions
say to spray adhesive on the foam backing, but I didn't bother. It was
snug enough, that I'm sure the foam won't be flopping around in there.
Next, I mounted the driver, which is one serious S.O.B. It feels like a
lead weight, which actually makes me confident that I made the right
decision. Well, that was it. I'll be breaking it in over the next week
in my home theater system to loosen it up, before I move it to my
dedicated stereo setup. I must say that my first impressions are that
it is well made, and feels like it should sound good, if that makes
sense. Stay tuned...


+---+
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[SlimDevices: Audiophiles] Re: Best subwoofer for music under $1000?

2006-01-27 Thread konut

What's missing from this discussion is a sense of proportionality, not
seeing the forest for the trees. We could go back and forth all day,
for several days, about theoretical ideals while the practical
realities dictate a different perspective. Unless one has an unlimited
budget, we must make compromises when it comes to bass performance. By
far the most influential factors on bass performance are room
dimensions, and surfaces, and where the bass driver(s) reside in that
room. Few of us have the freedom to create the ideal room,dimensionally
or acoustically, or have unlimited options as to placement, so we
immediately hobble ourselves with problems that have to be addressed if
we are to experience  satisfactory bass performance. Unless you're VERY
lucky, there is virtually no chance that whatever sub you get will have
reasonably flat response in the location(s) that you are limited to.
Fortunately, there are products that address this problem that are
reasonably priced, like the Behringer BFD, which solve more problems
than they create by being able to lower nodes and smooth nulls. I'm
sure there are some that will dispute THAT statement. 
As far as stereo subs are concerned, I would venture to say
that there are precious few recordings where that would make so
substantial a difference as to limit your enjoyment of them. Of course
it would be an improvement but at a substantial expense and more
complicated implementation.


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[SlimDevices: Audiophiles] Re: Best subwoofer for music under $1000?

2006-01-27 Thread ezkcdude

Skunk Wrote: 
 PS. Thanks for the pics ezkcdude, but no more por favor! I meant I
 wanted to see your veneer work, after seeing your DIY's, but didn't
 realize it was textured plastic this time.

That's how the cabinet comes in the kit! Sheesh, you think I'd do that?
Actually, it looks kind of cool in person. It's kind of like faux cast
iron. In fact, it gave me a great idea for making veneer out of a thin
sheet of cast iron. Not only would the look be unique, but it would
seriously deaden the cabinet (if done correctly, of course). Skunk,
just for you, here's another DIY set I built with birch veneer.


+---+
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[SlimDevices: Audiophiles] Re: Best subwoofer for music under $1000?

2006-01-27 Thread ezkcdude

Yeah, I didn't really think that one out. Maybe I could find an old cast
iron stove, and convert it into a subwoofer!

And...no...that's an alarm clock. Those speakers (sadly) are at my
parent's place in Cali.


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[SlimDevices: Audiophiles] Re: Best subwoofer for music under $1000?

2006-01-27 Thread Skunk

Is that a SB2 on top of the left speaker?


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