Techtalk

Ahh, ill take a look inside, thanks for the tip!

best
Pete

it was the T4 in the end, I have asked Drip for a replacement.

Best
Pete

Hi Guys,

hope all is well,

I have a slight issue with one channel, the release time in the last 1-2dB's is super slow, almost 60 seconds to return to zero in the last dB..

i have not had time to look at any great detail, just thought id ask first for ideas as i thought that the release time was ...

Hi Volker,

Ah yes i remember reading some thing about the gain mod...ill have a look through..

as far as oscillation, none what so ever, its clean right up to +22dB, at which point there after it starts to distort and no more level can be had..

which by the way behaves just like my other la2a ...

hi all,

well its on an i'm alive...ha ha..

its working as an amplifier just fine, one problem so far though,

i have HUGE amounts of gain!!!! and its all in the first 5mm of knob travel!!

is this some thing to do with no T4b? cant see why it would be though,

any ideas would be most welcome, of ...

Hi Guys,

can i test the unit with out the T4b's in it? looking at the diagram i can see no reason why not, am i correct on this?

Best

Pete

lol...

was very funny wasn't it!

lesson learned,

must think things through a little bit more, especially before posting to the world to see!

hey you guys, if you fancy checking out my music then please feel free to let me know what you think..i'd be really interested to hear yours too..

www ...

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

lol...what a day..!

night.

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.....

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

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

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

Hi All,

(my first post here)

Re the 2LA2, Meter switch - GR / Output +4,

on the PCB labelled GAIN RED its has a 2 contact plug, but on the circuit diagram shows a double pole switch, how are you doing this with only two contacts?

Is there a PCB Layout Drawing with the PCB tracks drawn?

all the ...