danny_66 said:
🙂 It's the same nesistor network,our v2 will going on this way.attenuation:£79dB£¬1dB per setp.79 setps at total.
luzhu said:
Please confirm, your v2 will NOT be R-2R network...
If that's right, I'll be happy 🙂
Thanks Lu!
Cartman,
You should note that BBP (Lu) is offering the kits.
I don't know if Luzhu is associated with BBP, but they are very distant from each other. (I am guessing that Quangdong to Shanghai is at least as far as Florida to New York.)
You should note that BBP (Lu) is offering the kits.
I don't know if Luzhu is associated with BBP, but they are very distant from each other. (I am guessing that Quangdong to Shanghai is at least as far as Florida to New York.)
benchtester said:
Oh, sorry, you're absolutely right -> I was inattentive...
thx for your warning!
benchtester said:
cartman said:
🙂 🙂 🙂 🙂
hi everyone,what fun!That's clearly an misunderstanding.actually,BBP and me are brothers.our name is lu.and he is at shanghai and me at shenzhen of guangdong.our kits was made and mailing from here.because bbp's english is better than me,so he will to provide the technical supports for gays.🙂 🙂 take an fun ,he just like a manager and me is a worker.
i work for him.😀 😀 😀
luzhu said:
made a seriously spelling mistake again.i wanted to wrote "guys" not the "gays".
sorry to all.i think i must to inprove my english from now on.🙂 🙂Predator864 said:
cartman said:
benchtester said:
luzhu said:
Hi Predator864, manual sent 🙂
Hi cartman and benchtester,
luzhu is my brother 😀 The VOL kit V2 is under development , the goal is to design a remote attenuator without any 'pop' noise and easy to use. Maybe it will take a month's time to finish designing the cirrcuit and the testment. At last, the sound of the new kit must fit my Subjective listening
Hi luzhu, my brother, you should turn to a online translation tools to improve your writing english 😀
Thanks the all 🙂
Last edited by a moderator:
Here is a suggestion for V2:
There are DACs that control the volume digitally inside the DAC. In such cases, the volume control can be bypassed, so in the source selector, one of the source can be designed to bypass the volume control and go straight out to the amp (this could be a jumper).
There are DACs that control the volume digitally inside the DAC. In such cases, the volume control can be bypassed, so in the source selector, one of the source can be designed to bypass the volume control and go straight out to the amp (this could be a jumper).
Koifarm said:
Hi Koifarm, may I know your email address?¡¡It seems that I havn't got your email 🙁
regards
Lu
Today received the volume control kit and the cdrom control kit in good condition.
Can you send me manuals? ronny@ict-net.net.
Products look great.
I will use the volume kit in a 2 x 400 Watt amplifier. I build the amplifier with 2 x Hypex UCD400oem, redrock smps 1000Watt, 6n6p tube preamp and vt4c aluminium housing.
Can you send me manuals? ronny@ict-net.net.
Products look great.
I will use the volume kit in a 2 x 400 Watt amplifier. I build the amplifier with 2 x Hypex UCD400oem, redrock smps 1000Watt, 6n6p tube preamp and vt4c aluminium housing.
BBP. Can you change the software so that the JP4 optional output P0 stays 20 sec high at power on and not 1 sec as is now.
I can use this option to let my tubebuffer to warmup for 20 sec and then switch the amp on.
It would be perfect that the display, if you turn it on counts backwards from 20 to 0 sec and then show the volume and input status.
Ronny
I can use this option to let my tubebuffer to warmup for 20 sec and then switch the amp on.
It would be perfect that the display, if you turn it on counts backwards from 20 to 0 sec and then show the volume and input status.
Ronny
OH dear! I have a problem!
I have only just found the time to power this up.
There is a problem with the controller / display.
When I press to go into POWER STANDBY, the display is lit!
Power it up and the display is dark but I can see some characters which are random.
The volume control works and the relays click - sometimes it displays part of the -5xdB display.
The input selector does not work - no relays click.
The remote does nothing but I can see a good signal on the "D" pin of the opto detector with my 'scope.
I have tried to show this in photographs.
Checked for bad solder, connections etc. Nothing to see. Tried a mild heat-gun. Nothing. Not mechanically intermittent.
Running from a bench power supply (Chinese made 😉 so no problem there!
I have only just found the time to power this up.
There is a problem with the controller / display.
When I press to go into POWER STANDBY, the display is lit!
Power it up and the display is dark but I can see some characters which are random.
The volume control works and the relays click - sometimes it displays part of the -5xdB display.
The input selector does not work - no relays click.
The remote does nothing but I can see a good signal on the "D" pin of the opto detector with my 'scope.
I have tried to show this in photographs.
Checked for bad solder, connections etc. Nothing to see. Tried a mild heat-gun. Nothing. Not mechanically intermittent.
Running from a bench power supply (Chinese made 😉 so no problem there!
Attachments
- Status
- Not open for further replies.