Thread: Q for Scott.
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ScottW
 
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"Sander deWaal" wrote in message
...
"ScottW" said:

I dont see what good that will do. The KSA150 is 47k in so the min load

is
9.7k, adding 20k to the Krell only brings it to 10.3k and reduces my max
levels by about 30%. Seems like a heavy penalty to increase input

impedance
by 600 ohms.


Reading this again, I think there's a mixup here.
You're not increasing *input impedance* by 600 ohms.
When adding 10k or even 22 k in series with the pot * at the input*,
meaning the "hot" side of the pot, you're making the load for the CD
player lighter.
Instead of 10 k or whatever there is in parallel with, the CD output
now "sees" 20k or 32 k depending on what value you use.
Adding the resistors at the input of the amp has the advantage that
cable capacity doesn't matter, where placing them at the CD side
*does* matter.

I don't know whether this will solve your troubles, but I've
experienced situations where the sound benefited from adding the 2
resistors. Dynamics and detailing increased.
The extra bonus is that phono and CD will put out about the same
voltage, meaning you won't have to play LPs on 12 o'clock and CDs on 9
o'clock anymore.

Anyway, Dev noted he uses a 10 K passive pot as well without the
problems you mention, so all of this may be moot.


Well, we had an interesting experience tonight. Art was over and we set up
both CDs into the passive. He had some Robert Randolph and Derek Truks Band
CDs. I hadn't heard either, southern rock with a little funk and prog
slant. We setup both the Arcam and the AMC. Art felt the Arcam was more
revealing of detail but wasn't particularly musical and lacked rythym and
pace. I had similar feeling when I put on Islands last night but rapidly
got over it when the soft sounds of a caressed coronet filled the room.
Anyway, Art likes a bit of pace and more upbeat music. We then tried to
unload the Arcam by connecting the second set of outputs into my active
preamp (Yamaha C-70). The C-70 still feeds the passive which has a bypass
switch that sets the selected input direct to the output. Apparently other
weird things happen on the passives non-selected inputs. It appeared the
Arcams other outs were still connected to the pot as the outputs were
severely loaded to the point where I couldn't get hardly any volume out of
the lines to the active preamp. I have no idea what the passive is doing to
the other inputs when selecting one to bypass, for all I know the all get
tied together and the pot. It seems weird cuz the active preamp is high
impedance inputs. Anyway the obvious things is those outputs are just
parallel connections to the same driver. So much for useful for comparing
cables.
So I disconnect the passive and did the cable swap routine to compare the
high impedance active preamp to the loaded passive on the arcam. Art felt
the active helped with impact and dynamics. I felt that it did but on soft
music like Lizards Lady of the Dancing Water the soundstage lacked depth.
Forward was there but the depth was gone. I also felt a slight loss of
texture on the wind instruments that I love.
Tomorrow, Im gonna get some connectors and rig up a 5k input load. I think
10k will cost me too much level. But if I still have headroom after putting
in 5 I'll add more (if 5 makes a difference).

Also listened to most of Gabriel Growing up. Howie.... DTS surround sucks.
Even the Dolby stereo track (whatever the hell that is ) into the Quads
isn't that great, though better than the surround,... nowhere near the
detail and texture and depth to my Gabriel on Classic Vinyl. Sorry, I wish
it did as the live concert is very cool on my 65" Mitsu Diamond.

NP Wake of Poseidon..... Frip is sitting there softly strumming

ScottW