Guys... am i reading this thread correctly the analog attenuation only
works on the RCA outs ? I really would prefer balanced outs if at all
possible, as I believe these sound best on my amps.
My system at the moment is the Transporter into a pair of Bel Canto
Ref1000 power amps into a pair
I thought there was also a question of input impedance of the power amp
and output impedance of the SB product. IIRC there is a ruleof thumb
that the downstream device should have ten times the value of the
upstream device. I am not an EE so I'd appreciate some help on this.
In practice, my SB3
highdudgeon;150557 Wrote:
The best preamp is no preamp.
I think this is very dependent on the amp; a low input-sensitivity amp
that needs a higher input signal to drive it will certainly demonstrate
some shortcomings if a properly-matched preamp is not involved.
--
PhilNYC
Sonic Spirits
richidoo;156576 Wrote:
Stability and noise should not be a concern, so a preamp is not
necessary for attenuation or protection, anymore than you would need
one for a DAC or CDP w/VC.
There are some rare failure modes where the Squeezebox can send out
full-range, 100% power white noise, the
Mark Lanctot;156668 Wrote:
- had been going on for hours according to neighbours.
Yikes! I wonder if his SB was bone stock. Surely Slim got hold of the
failed unit for analysis? Should be easy to see what went wrong in
hindsight.
Well, sh** happens, maybe a surge got it, or his cat. Or maybe
richidoo;156672 Wrote:
Yikes! I wonder if his SB was bone stock. Surely Slim got hold of the
failed unit for analysis? Should be easy to see what went wrong in
hindsight.
The problem goes away with reprogramming the CPLD (press and hold '1'
while power-cycling).
The theory was that the DAC
Michael16oz;150554 Wrote:
What do people think of flying mole Power amps...
thanks Michael
I'm still curious about this. I'm thinking about getting a similar
setup as the OP - has anybody tried the Flying Moles? I haven't yet
figured everything out about volume control. The moles have a
Excellent post.
One thing: without analogue attenuation (ie, moving the jumpers) with,
at least in my experience, a 26db gain amp, there is a lot of volume.
To me, all the way to the left should be silence and all the way to the
right should be very loud but not wall-smashing. I experimented
Mark Lanctot;156568 Wrote:
It's an Allen key (hex driver). Since we can get metric hex drivers
here in North America, I believe you should be able to get Imperial hex
drivers in Europe. 1/16.
http://www.diracdelta.co.uk/science/source/a/l/allen%20key/allenkey.jpg
Thanks a lot! From the
Thanks for thinking about my question...
The truth is I'm not sure... I've dismantled my stereo system since I
rarely use it to listen to music. I either use my Ipod with headphones
or played through (at work) a Presonus Central Station into Mackie
824 speakers.. All I'm left with at home is
Michael16oz;150895 Wrote:
My dream would be (though I strongly suspect I wouldn't spend the
money) the cheapest amp that would make PMC OB1 really sing
Well, if you find out what this is please let me know! My NAP250 is not
really driving my OB1s well enough and I've been pointed towards a
I've got two solutions for you ;-)
Sell me your OB1s and let me have your problem!
Sell me your NAP250 and start the next step..
I suspect I'm not helping..
Michael
--
Michael16oz
Michael16oz's Profile:
The volume control is digital, though (as per many other threads here!)
you can use a decent range on it before you'll notice any quality
change.
The issue is more about protecting your amp and speakers from any
accidental surge - remember the transporter is entirely controlled by
software! You
ceejay;150606 Wrote:
The volume control is digital, though (as per many other threads here!)
you can use a decent range on it before you'll notice any quality
change.
The issue is more about protecting your amp and speakers from any
accidental surge - remember the transporter is entirely
Michael16oz;150554 Wrote:
Hi and thanks for any advice offered...
I would like to buy a transporter without preamp and run it straight
into a power amp (or activespeaker) Will this combination be
problematic... is the Transpoter volume control to be avoided?? What
do people think of
Exactly -- they are clearly marked and it is easy to do. You just need
a 1/16th hex wrench. They're right in front of the RCA outputs.
You'll notice the markings (-30, -20, -10, 0) for L and R. At O, you
will find a plastic coated jumper on each side. Just move those to
-30, see how that
I've tested running the Transporter into my Naim NAC102 preamp and then
straight into my NAP250 power amp. I prefer it into just the power amp.
Your mileage may vary. :-)
MC
--
ModelCitizen
Now what?
Transporter Naim NAP 250 PMC OB1s.
Music catalog: http://modelcitizen.mine.nu/music.txt
The best preamp is no preamp. Unless you're using other sources,
running the Transporter directly to an amp will be at least as good as
using the best preamp on the planet -- if not better. You will need a
1/16th hex nut to open the case and adjust the analog volume
adjustment. This is very
Thanks for your quick response
So when the spec says 'Volume control is provided for all outputs' is
this a digital (bit depth reducing) volume control.?
thanks again
Michael
PS lazy me wants a remote controlable volume control.
--
Michael16oz
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