Techtalk

Numero deux....

Did this one for my producer here in LA for trade on some slick mix-production on some new tracks. Hey Volker I used those old MAllorys in here but I think they might be not so great. When I fire the unit up ,if the gain is up, it squeals a high pitch noise which goes away in 1/2 a second.
So I may swap those caps out to see.


This one has no noise at all!







Thanks Again!

Up next the Analag....

-ChuckD

Chuck, your output in DIY gear is killing me
it isn't easy to do a nice frontpannel layout for gear,
and you do two different great looking D-LA2As
respect

Wow, that looks really nice.

Charles,
I agree with Volker, your DIY output is simply amazing, concerning both, quantity and quality. You grounded the individual channels to the left of the main board and the IEC ground to the right. Putting all grounds together to a single point on chassis might be better, but when there is no hum at all, leave it as it is. Great front panel.
regards
Bernd

Numero due gets

Hi all,

I should be able to drop in a 7812 instead of the 7805 right?

Im thinking of using a relay to switch the mains so i dont have to drag it across to the front panel, possibly.

ChuckD, wonderful wonderful wonderul DIY!!

all the best

Pete

Pete,
no. with the 9V you get 12.7V rectified, but the 7812 would need some more Volts to work (haven't looked it up, but I think it is at least 3V more then out.

oh ofcourse its 9 in! ha ha nothing but a mirricale wontl get me 12v.. yes you need 3v drop i think..

what you must think of me...mmmm ok ill have find a 5v relay that can carry enough current.

thanks

Pete

Pete,

why do you want to switch power on / off with a relay ?

just wondering ...

well

my design for the front panel is all sub-miniture toggle switches, i dont want to use the large retro ones that one would normally use for 240v.

So i was just thinking really...and engaged my mouth before brain...again..

Pete

switching the mains needs some power
"off" works fine

but for "on" you need the mains transformer connected.
ok, you could switch the secondaries.

can we just delete these last three posts!

please!

ah! but i could, could i not? just add a small 240 primary / 18v secondry transformer? to power the 7812 circuit?

dare i press submit any more.....

no need to delete anything

this would work
(but I won't suggest it)

yes, i think i'll re-think this one..

lol...what a day..!

night.

Hi Pete,
that was a really amusing discussion!!
regards
Bernd