Sure, send me an email.
The pot we are shipping in the kits is a cheapo Alpha 5K linear (single). It's quality isn't that important, as it is just a voltage reference for the PIC.
The pot we are shipping in the kits is a cheapo Alpha 5K linear (single). It's quality isn't that important, as it is just a voltage reference for the PIC.
So are any of you builders making any progress? I would like to hear some "reviews" of the preamp. 🙂
the housing
As allways with these projects the right housing is the challange.
As things look now, with Sinterklaas behind us the coming weekend will be listening time.
E&E
As allways with these projects the right housing is the challange.
As things look now, with Sinterklaas behind us the coming weekend will be listening time.
E&E
One other little note. I replaced the kit pot with a 10 turn from BG Micro. No problem with sensitivity in setting the volume now.
hayenc said:
Wow! That should allow for ultra fine adustments. 🙂 In reality though, there are 256 steps, so you will get 25.6 steps per turn. 🙂
Yes, a bit of overkill with about 15 degrees per step, but it was what was available at a reasonable (under $10) price.
Mine is built and sitting on my desk awaiting the return or my Rev_C from Reputes house where he was testing it.
The Rev_C blows away his pre and amp combo in EVERY way except low end control. Bass is better on his amp but I think the small toroids in mine are the reason. I have a set of 400va 23v that I will drop in and try.. 😀
I was supose to get my Rev_C back this past weekend but it won't be until this weekend.
The Rev_C blows away his pre and amp combo in EVERY way except low end control. Bass is better on his amp but I think the small toroids in mine are the reason. I have a set of 400va 23v that I will drop in and try.. 😀
I was supose to get my Rev_C back this past weekend but it won't be until this weekend.
Attachments
And the test speakers...
From this thread:
http://www.diyaudio.com/forums/showthread.php?postid=770636#post770636
From this thread:
http://www.diyaudio.com/forums/showthread.php?postid=770636#post770636
Attachments
Hi Russ. Do you have the Eagle PCB file of the latest PCB. I would like to do my own.
Thanks in advance...
Thanks in advance...
update
Just got the preamp kit from the mailman this morning. I actually flagged him down on another street. If you are not home to receive the package; they make you go to the P.O. later after 6:00 pm to get it. All going well, hope to be assembled and in use soon.
cheers
doggy
🙂
Just got the preamp kit from the mailman this morning. I actually flagged him down on another street. If you are not home to receive the package; they make you go to the P.O. later after 6:00 pm to get it. All going well, hope to be assembled and in use soon.
cheers
doggy
🙂
Re: chip direction
:EDIT: no you don't, sorry had to look at mine. The opamps are reversed.
Cheers!
Russ
doggy said:Just want to make sure about the direction of the chips on the pcb; does this look correct? Concerned about the op amps especially.
thanks
doggy
🙂
:EDIT: no you don't, sorry had to look at mine. The opamps are reversed.
Cheers!
Russ
No problem Russ. You shared your program with us and that is very kind of you. I'll do my own PCB using your PCB image.
Thanks again for all your work.
Thanks again for all your work.
Re: chip direction
Doggy, I spoke too soon. Your opamps appear to be reversed. I had to dig my prototype out of its case and look. The dot/indent on the opamp indicates pin 1, and the should match the "1" on the PCB.
doggy said:Just want to make sure about the direction of the chips on the pcb; does this look correct? Concerned about the op amps especially.
thanks
doggy
Doggy, I spoke too soon. Your opamps appear to be reversed. I had to dig my prototype out of its case and look. The dot/indent on the opamp indicates pin 1, and the should match the "1" on the PCB.
Thanks for the speedy reply. There has been a lot going on lately in this forum. I hope to see you post frequently about your projects. I for one have not felt to happy about recent events here.
all the best
doggy
my next project: my mini-amp-planning of using lm3886 chips
all the best
doggy
my next project: my mini-amp-planning of using lm3886 chips
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