Current on R18/19 was quite low when I tested at 40V. I didn't adjust though. I don't plan to run at that low a voltage anyway.
I'll have to audition the ND. The C's highs are very clear like a blameless.
There is nothing wrong with it , but the bass slam of a spooky is superior.
OS
There is nothing wrong with it , but the bass slam of a spooky is superior.
OS
I wish I can get a pair Spooky or these would preform like that.
Good bass deep is must to me in a system..🙂
When I build the ND's , I might give the spooks away.
The C's would give good bass , better than most. I just prefer
the spook , I actually hear a difference - but that is just me.
(subjective).
OS
May I as if you are playing them through identical OPS and at the same time? I'm waiting on parts for a couple of "other" amps right now so tomorrow I will hook up the Spooky and the ND side by side through identical OPS and see if I can hear a difference. I will do the same with the Krypton C. If I have time I will try the Symetri too. I haven't done this in a while so should be fun.
We will be a bunch pending on your listening feelings.....>WHat i can say is that often when amplifiers shown better low bass presentation the whole sound is "darker" high and little bit mid are eaten...thhat's why my taste goes often to amplifier with a little bit weaker deep bass but clear and fast high and mid...more air in sound presentation.....
Marc
That's why I've never cared for using a sub when listening to music. I like it for movies though.
Marc there is a reason I wrote GOOD deep bass🙂
For example people so after the M Hiraga, I built several with different PS and I can say that is not my taste.
It has very nice top clinical all do airy mids and very weak bass. At least to me, I do not want to offend those who like that amp in any way! I can say I had same experience with the Symasym amp. After couple weeks I dismantle that to all do it was better to me than the M Hiraga. Again I do not want to offend nobody if you like it be happy with! Good for you. I accept that different people has different taste. If there is no GOOD bass after a couple hours I do not want to listen anymore.
I believe you have more than enough experience to understand me what I talking here.
A well controlled deep bass can exist with good airy mids and silky top together.
I'm not interested on subwoofer type of bass.
When I seat done to listen music I do not want to imagine something what is not there!
The same for me.
And, because the direct TV sound is often bad, no way to listen to the sound of TV on my hifi system, except for movies. I prefer the sound of the little speakers in the TV itself ;-)
About bass and treble impressions, often, an amp with less damping factor will give the feeling of more basses, so, less good treeble. While a fast amp will gives an impression of missing a little basses.
Sorry for my poor English, "basses and treble feelings" ;-)
What i wanted to enlight is, like during mixing process, we often adress the wrong side, increasing basses of an instrument, by example, while the right solution was to reduce some trebles or excessive presence.
A properly phased and balanced sub for LF can actually be superior to
a full range system. A sub can be specifically designed to do LF
better than any full range. More "non-directional" LF , tuned lower - with
a longer bigger port ... bigger box , etc. It's amp can also be specifically
"LF duty".
On to the Kypton ND/C stuff .
The "C" uses those caps at the input pair current FB node. As you know ,
a cap with introduce phase shift with frequency. ND has no cap , just
minor phase shift caused by transistor Cob and compensation.
ND and spook are capacitor-less in the feedback path , just the input
cap introduces shift. The only shift fully within the amp is at Mhz (ULGF).
So , maybe not MORE bass ... but bass at a different phase. One
is not better than the other - but different.
OS
a full range system. A sub can be specifically designed to do LF
better than any full range. More "non-directional" LF , tuned lower - with
a longer bigger port ... bigger box , etc. It's amp can also be specifically
"LF duty".
On to the Kypton ND/C stuff .
The "C" uses those caps at the input pair current FB node. As you know ,
a cap with introduce phase shift with frequency. ND has no cap , just
minor phase shift caused by transistor Cob and compensation.
ND and spook are capacitor-less in the feedback path , just the input
cap introduces shift. The only shift fully within the amp is at Mhz (ULGF).
So , maybe not MORE bass ... but bass at a different phase. One
is not better than the other - but different.
OS
Yes for the "Pros". For the "cons", a single speaker offer less active surface than two or more ones. A multiple sources are less exiting resonance modes in the room. And, anyway, no directivity to fear about at very low frequencies, right ?
Well, OS, i believe basses in the feedback path don't change the phase of the reproduced signals at low frequencies: they are still equal to the source one. But it increase the distortion, because the less effective subtraction of the feedback signal, not perfectly in phase with the original one: feedback ratio is reduced a bit at very low F, and so the damping factor.
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That's what I said (meant). Phase in the loop affects bass adversely.
Final phase is the same , but the capless is PPM down to the servo
frequency. Not the case with the wolverine and C.
Since this is true , might SQ also be affected (LF) ?
OS
Final phase is the same , but the capless is PPM down to the servo
frequency. Not the case with the wolverine and C.
Since this is true , might SQ also be affected (LF) ?
OS
I think there's another reason why the VFA's are different in the bass performance. With larger signals the Feedback suffers more as the V to I conversion is over the resistors is not very good. it's mixed some voltage and some current. VFA's are more ideal in that respect. same as I prefer to have currents mirrored over into the VAS, and the very reason I made the last IPS.