Hi John,
Good to see you.
Not criticizing so much as making a point. I just reported what I observed as far as the effectiveness of the product. I am always ready to keep an open mind and report honestly.
I'm very sorry to hear Jack Bybee died. I would never wish ill towards anyone, and I am sorry for the loss of your friend. I'll leave it at that.
Peace to you John, stay well and I wish you success.
-Chris
Good to see you.
Not criticizing so much as making a point. I just reported what I observed as far as the effectiveness of the product. I am always ready to keep an open mind and report honestly.
I'm very sorry to hear Jack Bybee died. I would never wish ill towards anyone, and I am sorry for the loss of your friend. I'll leave it at that.
Peace to you John, stay well and I wish you success.
-Chris
🙂
How about we talk about audibilty of phase/group delay that it seems we shouldn't be able to hear, supposedly.
How about we talk about audibilty of phase/group delay that it seems we shouldn't be able to hear, supposedly.
Filters were mentioned earlier and the advantages of gentler ones.
I don't know if you saw this thread Can you hear a difference between 2 solid state preamps? but people were hearing a difference and group delay appeared to be an explanation.
I don't know if you saw this thread Can you hear a difference between 2 solid state preamps? but people were hearing a difference and group delay appeared to be an explanation.
Matt, I participated on the test. To me the difference was miniscule, no problem using any of the preamps presented.
Yes, but what do you think the difference was due to? I preferred the larger bandwidth one, there was less sibilance.
Hi Scott,
Interesting thread. I normally avoid these types of threads like the plague as it brings out the crazies.
Did they actually come up with anything concrete?
Interesting thread. I normally avoid these types of threads like the plague as it brings out the crazies.
Did they actually come up with anything concrete?
I've talked to John for 40yr. and he was never very committal on whether he could hear any of this, it was mainly his clients wanted it (and there was the rides in the Bentley).
I don't think so 🙂 Except possibly the issue was group delay, all the ducks weren't in a perfect row 😉 Why is a shallow filter better in a DAC?
Hi,
I have my doubts Scott J.
I suspect the ducks were running all over the yard in that thread!
Hi Scott W,
🙂
Okay. Understandable.
I have my doubts Scott J.
I suspect the ducks were running all over the yard in that thread!
Hi Scott W,
🙂
Okay. Understandable.
Cost constraints and a steep filter. Hmm, the components would have to be very high precision to do a nice filter (expensive), so in production I can see high ripple and highly variable slopes and delay.
Never really investigated this closely. They didn't sound very good. Once you get to lower order filters, the parts constrains become much more tolerant of manufacturing realities.
-Chris
Here is what Bob Lugwig had to say about vinyl verses digital:
"To help answer that question for myself, I have done the following trick: I make a DAT recording of the surface noise of the particular pressing I'm comparing, perhaps from the 3 to 10 seconds of silence between movements. With a digital editor I make a long loop of that noise. Then I play back the loop of the surface noise and mix it through my console with the sound from the original tape. Presto! The CD master sounds nearly identical to the pressing. It is brighter and more spacious, and the echo seems longer! Take away the record noise from the CD and it again seems drier and more closed-in than the pressing. There are certainly some interesting psychoacoustic phenomena here! So potentially, in some areas, the LP can offer greater musicality than the CD. It is not more accurate, but in my opinion it is sometimes more musical."
Bob Ludwig On Digital Audio BAS Speaker
"To help answer that question for myself, I have done the following trick: I make a DAT recording of the surface noise of the particular pressing I'm comparing, perhaps from the 3 to 10 seconds of silence between movements. With a digital editor I make a long loop of that noise. Then I play back the loop of the surface noise and mix it through my console with the sound from the original tape. Presto! The CD master sounds nearly identical to the pressing. It is brighter and more spacious, and the echo seems longer! Take away the record noise from the CD and it again seems drier and more closed-in than the pressing. There are certainly some interesting psychoacoustic phenomena here! So potentially, in some areas, the LP can offer greater musicality than the CD. It is not more accurate, but in my opinion it is sometimes more musical."
Bob Ludwig On Digital Audio BAS Speaker
I have no idea, the difference I heard was too small for me to really go into serious analysis mode. Presented measurement gave away no clue.
I think you guys should not compare John Curl an audio designer, to for example Indian scammer doctors such as Deepak Chopra selling people nonsense about quantum theory & nonsense magic water & other stuff -- Deepak Chopra gets nailed by Richard Dawkins - YouTube
John Curl is not trying to sell people $3,000 Usd power supplies or $3,000 cables with nothing audible & nothing scientific like the scammer Depak Chopra is selling jargon & nonsense to people on a daily basis, and then people get 'offended' when if someone believes in something (like a scammy cult) & you criticize it then you are offending someones 'belief system' & bla bla bla.
Expensive stuff in audio using cheap internals is the scammy area in audio it's not difficult to find it if someone is actually trying to look.
- Status
- Not open for further replies.