steenoe said:
Me? Ya talking to me?, I am right here😀 Just received the package today and those boards are way to nice to destroy with any solder stuff😉 In fact they are so nice that I doubt that I can part with the set that you are supposed to haveI also doubt that you have a bigger pcb collection than mine, I always order 2 sets of boards, one for building, one for collecting🙂 🙂 I am not getting slow on the trigger, I just wanted (for once) to see how you guys would do on your own
That is not goin' too well, to say the least..... He-he...
On another note, thanks a lot to the Dynamic Serbian duo for offering these finely made boards to us starving DIY'ers. They are in fact, magnificent work. Just superb 😎
Steen🙂
😉
if you insist - jormajj found before me what numbers for heatsinks are adequate ,at usual vendors :
Fischer
SK81-50 SA
SK75-50
Austerlitz
KS100.3-50
KS32.1-50E
ya realy like them?
just don't loose eeny weeny parts 😉
Let's hope the guys at that forum handle Germanium better you, yea Sheetness.
Me sez : "like MKIII", also shunt type, but not the same.
The MKIII also has regulators on the amp boards, like CTC deepthroat.
Shunty good enuf for me, 8 of them.
Me sez : "like MKIII", also shunt type, but not the same.
The MKIII also has regulators on the amp boards, like CTC deepthroat.
Shunty good enuf for me, 8 of them.
Hi... And nice weekend to all here...
Official making thread... I allway's like looking at picture's, so here is one more from me.
I am making final assembling of complete
. On picture both my newly 'designed' 😀 inputselector + toslink-switch (To switch between 2 digital sources) is to be seen. Right at picture is a dual +5vdc PSU (1 for toslink thing's, and the other for turning relay's on/off)
My inputselector is made completly foolproof (NO COMMENT HERE PLEASE 😀 😀). One(Me) can switch between 3 RCA input's (sry. ZenMod for not making it complete balanced), and 1 balanced input.
The 3 RCA (unbalanced) input's, also closes the -in connection, on both sides of 4deck alps pot. When balanced in is choosen, the -in connection opens up for that signal too. This is controlled by a normal 4positions rotary selector.
Normally i will use balanced out, but also here i made a switch, which are going to be placed on back of to switch between balanced/unbalanced out.
Just diden't tried it yet... maybee tomorrow ... but have to go now ...
Jesper.
Official making thread... I allway's like looking at picture's, so here is one more from me.
I am making final assembling of complete
. On picture both my newly 'designed' 😀 inputselector + toslink-switch (To switch between 2 digital sources) is to be seen. Right at picture is a dual +5vdc PSU (1 for toslink thing's, and the other for turning relay's on/off)My inputselector is made completly foolproof (NO COMMENT HERE PLEASE 😀 😀). One(Me) can switch between 3 RCA input's (sry. ZenMod for not making it complete balanced), and 1 balanced input.
The 3 RCA (unbalanced) input's, also closes the -in connection, on both sides of 4deck alps pot. When balanced in is choosen, the -in connection opens up for that signal too. This is controlled by a normal 4positions rotary selector.
Normally i will use balanced out, but also here i made a switch, which are going to be placed on back of
to switch between balanced/unbalanced out.Just diden't tried it yet... maybee tomorrow ... but have to go now ...
Jesper.
Attachments
Thank's man... Actually i just tried it.
If i feed
with 2vac sine, then 30vac sine come's out unbalanced, with -out 'open'... with -out closed, it spitzz out 45vac sine... that's a big difference... JUST don't understand why ??? but nevermind... it work's fine.
I make this unbal/bal selector, so that i got possibility to use with other amp's than my F4...
Jesper.
lykkedk said:
Thank's man... Actually i just tried it.
If i feed
JUST don't understand why ??? but nevermind... it work's fine.
I make this unbal/bal selector, so that i got possibility to use with other amp's than my F4...
Jesper.
it's easy to understand - you always need two points to establish any voltage difference ;
with one leg open , you have gnd somewhere, but not really where it need to be ;
when you ground one of outputs ( you know - you can choose which leg you'll ground
) you have established both points , needed for current flow......be careful - using
with F4 oriented gain setting - with other amps 😉
Zen Mod said:
it's easy to understand - you always need two points to establish any voltage difference ;
with one leg open , you have gnd somewhere, but not really where it need to be ;
when you ground one of outputs ( you know - you can choose which leg you'll ground
be careful - using
So, the pumpkin does single-ended out. I thought it might, but forgot where I read, or forgot to ask.
Just remember to ground one of the outputs. Check.
If this is supposed to be an inverting amp, do I gound the negative out?
carpenter said:
where is the fun if I tell you everything?
just imagine xformer instead of
; both prim and sec CT-ed .
Woow... ofcause ZenMod... easy to understand, i also know that about floating gnd, but didn't just think of it in this case. I don't know why, but sometimes it's difficult to me to understand thing's in other perspectives than the one's i used to work with...
This is a very good explanation ZenMod, thank you for that.
Jesper.
Sasha,
I wan't some of these hudgely hugly pcbs too.
Excitement not any more under control.
Pada li snijeg un srbiji like in Betsch?
Monkey face
I wan't some of these hudgely hugly pcbs too.
Excitement not any more under control.
Pada li snijeg un srbiji like in Betsch?
Monkey face
Zen Mod said:just imagine xformer instead of
Yes, that's a great analogy.
But what trips me up is which secondary tap to use if I want inverting. We've got + and - inputs and probably only want a + out relative to ground. I think. So my mind tells me to ground the negative tap.
ZenMod:
Hmmm... Actually i am having BIG problem driving my LeachAmp with ... I must say that i never tried it before i attached my inputselector... hmmm donno right if that's the problem ... will learn more next few day's i guess ... it's irritating but fun too 😉 ....
I attached my LeachAmp... and the inputselector/pumpkin is a GIANT disortion machine.... GREEEAT hummming reallly great! 🙂
I haven't yet tried the with my dreky inputselector and my F4... btw.
Will tell, about problem in few day''s...
Carpenter:
I am pretty sure, it dosent matter... but anyway i would choose to gnd the -out...
Jesper.
Hmmm... Actually i am having BIG problem driving my LeachAmp with
... I must say that i never tried it before i attached my inputselector... hmmm donno right if that's the problem ... will learn more next few day's i guess ... it's irritating but fun too 😉 ....I attached my LeachAmp... and the inputselector/pumpkin is a GIANT disortion machine.... GREEEAT hummming reallly great! 🙂
I haven't yet tried the
with my dreky inputselector and my F4... btw.Will tell, about problem in few day''s...
Carpenter:
I am pretty sure, it dosent matter... but anyway i would choose to gnd the -out...
Jesper.
lykkedk said:
Thanks for that. Even though I haven't a solid idea as to why, it just seems to make intuitive sense to have a + out relative to ground.
🙂
Zen Mod said:
where is the fun if I tell you everything?
just imagine xformer instead of
carpenter said:
take literally what I wrote ;
if you want absolute phase in puritan way then ground + output and use - as main one .
carpenter said:
woodie - it's not hard to me that I repeat some thing 1000 times , but you must learn to trust own eyes more .........
you have + and - inputs ;
you also have + and - outputs ;
they are labeled in that manner with purpose
so - if I wrote drek on forum - because I'm tired or because my brain is in red ......... trust to your own eyes ;
on input ground "-" leg , and use it unbalanced
on output ground "-" leg and use it unbalanced
in that case absolute phase is correct, not as I wrote previously .......
what I meant with previous post (where I wrote that you can ground whatever you want ) is exactly that - ground whatever you want and have phase as you wish .........
I'm currently operating a balanced, bi-amped stereo.
In the interest of economy, I wish to use unbalanced F4 for treble horns.
I wish to use mono balanced F4 for midbass units (dual 12" Eminence per channel) where I can use more wattage.
I've considered using Pumpkin for midbass F4 where I can use the extra gain. For the treble, I can use the electronic crossover, or my xbosoz.
You can see where operating balanced with unbalanced configurations can become confusing.
In the interest of economy, I wish to use unbalanced F4 for treble horns.
I wish to use mono balanced F4 for midbass units (dual 12" Eminence per channel) where I can use more wattage.
I've considered using Pumpkin for midbass F4 where I can use the extra gain. For the treble, I can use the electronic crossover, or my xbosoz.
You can see where operating balanced with unbalanced configurations can become confusing.
carpenter said:
There's only so much I can say. Nelson's Aleph J or Choky's Babelfish J (almost the same) are both balanced topology. You could probably build yourself a nice 'mini' and keep the whole shebang balanced.
sorry for the OT post😉
Hey Choky,
Re: fancy pants shunty reg. Is 82v CT tranny the ABSOLUTE MINIMUM for +-36v? I'm seeing what I have 'in drawer'. Greedy boys don't like to spend money
edit: Carpenter - my pump boards came USPS registered mail. I had to sign. I see you asked a while back.
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