Very interesting, I wonder if that is typical. Is your Korg the basic unit or have you made modifications? If you are willing, will you try turning the Korg on after the amp is on to see what it's like at turn-on?
Hi-
I was very pleasantly surprised by the quality of this volume knob:
https://www.amazon.com/gp/product/B07FTLW1D2/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1
I have one ordered. I have my academy audio control already. NSD10 won't be here for a couple weeks yet.
My B1K is per the build guide and parts kit. This evening I turned on the ACA first and sure enough there was a tiny little thump. Barely noticeable. Nothing like the off-thump of the ACA itself.
there is a subsonic, probably around 1 hz, "thump". this is likely to be filtered by most amps that are not DC coupled. My speakers move the full excursion range if I turn the power amp on first.
Could you elaborate on the timing? How soon after turn on, turn off? Within a second or is there a delay?
In my system as soon as the voltage hits around 12-14V, but I have Krell size power supply on the B1K powered by a UBiB which means it takes 10-20 seconds to come up to full 24v.
Previously when I just used the walwart, it is pretty much instant, and thinking about it, it is not a 1hz, but something much sharper, a proper thump. same when powering off.
Previously when I just used the walwart, it is pretty much instant, and thinking about it, it is not a 1hz, but something much sharper, a proper thump. same when powering off.
Academy Audio say that their board produces about a 1 1/2 second pause for the output relay delay. That might be enough. Thanks for the info.
It seems that the muting relay is intended to handle issues caused by the Muses chip itself and a very brief delay is adequate. From what I was told by Academy Audio, I got the sense that the muting output delay time is generated by a management chip that could be reprogrammed for a somewhat longer delay if that made sense. For myself, I would prefer 3~4 seconds.
Sorry, I thought we were talking about the Korg chassis from diyaudio, which is recessed.
For the folks who are contemplating using this feature of the volume control, I have learned that the circuit that delivers the delay will deliver only 1mA of current so additional circuitry is mandatory.
Respect to the gentlemen!
I have built this great structure, I am completely satisfied with it working super. His voice is phenomenal. My question to the Master is, is there a Riaa planned with this tube? Or maybe it already exists?
Thank you for the opportunity to have an amateur get rich with such a device !!
Sincerely!
I have built this great structure, I am completely satisfied with it working super. His voice is phenomenal. My question to the Master is, is there a Riaa planned with this tube? Or maybe it already exists?
Thank you for the opportunity to have an amateur get rich with such a device !!
Sincerely!
I'm still struggling with my KB1. Tweeter and mid make noise/hiss. My hearing isn't 100% so I can only hear it with my ear in front of the speakers. My wife (she can hear 110%) can hear it from the listening position. She has to concentrate to hear is there. Could this be caused by long interconnects? (5 meter no name interconnect between KB1 and Holton NXV500r2 poweramp.)
