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peter
2006-11-24, 06:22
L.S,

I like to use my (4) SB3's as my only audio interface. I use powered
speakers or discretely tucked away small amps. That means I need to be
able to control my listening volume with the SB's remote.

I've run into the problem that I can't find a setting for 'Player
settings > Audio > PreAmp volume control' that works for every occasion.
I get either a setting where I can select a sufficiently low volume for
background listening and where the maximum volume is rather limited. Or
a good volume for listening Metallica (not that I ever do) where the
lowest volume setting is much to high for background music.

I guess I would like to be able to select a different curve of volume
control, where I get more finely grained control over low levels and
more coarse over high levels.

Anyone else run into this problem?

Regards,
Peter

Skunk
2006-11-24, 07:52
Do all of your speakers/amps have gain settings? If so, I would try setting the gains so that you don't need the preamp volume attenuation AND digital volume control.

You're using 6.5 w/ the 100 step volume control aren't you?

peter
2006-11-24, 08:16
On Fri, 24 Nov 2006 06:52:18 -0800, "Skunk"
<Skunk.2hs7tn1164380101 (AT) no-mx (DOT) forums.slimdevices.com> said:
>
> Do all of your speakers/amps have gain settings? If so, I would try
> setting the gains so that you don't need the preamp volume attenuation
> AND digital volume control.

The T-Amps have gain settings (a volume knob) so I could try that. The
Behringer monitors have limited gain controls. I'll try playing with
those.

> You're using 6.5 w/ the 100 step volume control aren't you?

No, I'm still on 6.2.2. Sounds like another good option to try ;)

Thanks,
Peter

Mark Lanctot
2006-11-24, 08:34
No, I'm still on 6.2.2. Sounds like another good option to try ;)

I believe the volume range in 6.5 is exactly what you want. It's fine-grained, 0-100 instead of 0-40, and it's exponential - small adjustments at lower levels and more coarse at higher levels.

Just be advised: when upgrading from 6.2/6.3 to 6.5, uninstall first and delete the SlimServer directory. Also make sure any plugins you install are known to be compatible with 6.5.

cliveb
2006-11-24, 11:03
I believe the volume range in 6.5 is exactly what you want. It's fine-grained, 0-100 instead of 0-40, and it's exponential - small adjustments at lower levels and more coarse at higher levels.
Is that really true? I had been under the impression that the 0-100 volume range was (very close to) 0.5dB per step.

But whether it's linear or logarithmic, I can attest to the fact that it gives a far greater range of usable volume adjustment than the old 0-40 settings.

Mark Lanctot
2006-11-24, 11:24
But whether it's linear or logarithmic, I can attest to the fact that it gives a far greater range of usable volume adjustment than the old 0-40 settings.

I thought it was exponential, i.e. small steps for most of the range, then increasingly large steps towards the end of the range.

I keep it at 100% at all times so I'm not sure personally but I remember seeing this.

mooblie
2008-02-23, 05:56
Sorry to raise an old thread, but it seems a relevant starting point.

I am using SqueezeCenter 7 and two Squeezebox 1s (firmware 40) with the 0-100 volume control. However, the relationship between the volume setting and perceived volume output seems all wrong to me:
(a) not much happens as you drop from 100>40, output drops from 0 to -10dB
(b) reasonable control between 40>10, output drops from -10dB to -25dB
(c) far too coarse control between 10>0, output drops from -25dB to -50dB

I have measure the output and plotted this in the attachment, where the (linear) volume control setting from 0-100 is shown against the (log) audio level output from 0 to -50dB - see "Actual Respose" line.

You can see that, whereas it should be a straight line relationship in this lin/log chart, it is actually a curve, indicating the volume control drives the control voltage of the voltage-controlled gain section linearly, whereas it should be driven logarithmically.

I would suggest that (as shown by the "Preferred Response?" line) the output should drop by 0.5dB for each volume step - linearly throughout the range.

Is there a plug-in to fix this, or would a software update be needed? Having only 100 values, a simple look-up table would suffice, surely? Any volunteers? Anybody agree with me? :-)

peter
2008-02-23, 06:30
mooblie wrote:
> Is there a plug-in to fix this, or would a software update be needed?
> Having only 100 values, a simple look-up table would suffice, surely?
> Any volunteers? Anybody agree with me? :-)
>

Well, I'm still not too happy with the way my SB3 volume works. I use
active speakers and depending on my attenuation setting
my min volume is too loud or my max volume is too quiet. If you have any
improvements I'd be happy to try them!

Regards,
Peter

Mark Lanctot
2008-02-23, 10:26
This is a long shot, but is your server a Qnap?

If so take a look at this:

http://forums.slimdevices.com/showthread.php?t=43673

peter
2008-02-23, 11:15
Mark Lanctot wrote:
> This is a long shot, but is your server a Qnap?
>
> If so take a look at this:
>
> http://forums.slimdevices.com/showthread.php?t=43673
>

Nope, a PC running Fedora Core 4.

Regards,
Peter