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 Forum index » DIY Hardware and Software » Jürgen Haible designs
Krautrock Phaser ... but maybe I make some mistakes...
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Lorenzo



Joined: Nov 09, 2008
Posts: 349
Location: Trieste - Italyjstan

PostPosted: Fri Oct 08, 2010 5:13 am    Post subject: Krautrock Phaser ... but maybe I make some mistakes... Reply with quote  Mark this post and the followings unread

Hi,
I "finished" my "Krautrock Phaser" ... but maybe I make some mistakes...
the PCB was already populated, so I think I connect the pots not correctly!! Embarassed

my electronics knowledge are very basic... and I'm very slow to realize my plans Embarassed


anyway I cant ear the effect ... !!
The effect seems to be in by-pass mode, even if the phaser is turned off, the sound pass through the effect...
by-pass switch seems to be ok.

If I make a bridge between the Rate Jack pins I can ear a filter effected the input sound, but I cannot modulate it...

Lamps blinks... but I think to fast, I mean they doesn't blink slowly


I follow the explications of ths site but probably I make some mistakes...
I will try again following the schematics... but, any suggestions??



P.S. My brother have to play two gigs supporting NEU! in late October... it would be nice if my "Krautrock Phaser" will work fine Very Happy

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v-un-v
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Joined: May 16, 2005
Posts: 8932
Location: Birmingham, England, UK
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PostPosted: Fri Oct 08, 2010 5:22 am    Post subject: Re: Krautrock Phaser ... but maybe I make some mistakes... Reply with quote  Mark this post and the followings unread

Lorenzo wrote:

P.S. My brother have to play two gigs supporting NEU! in late October... it would be nice if my "Krautrock Phaser" will work fine Very Happy


WOW!! Then it MUST be fixed!!!

To support Neu! (minus Klaus of course Sad ) Is a very cool thing to be able to do. And I mean cool as in really good, because the word "cool" has become a bit of a cliche in recent years- anything that is crap is now cool. But Neu! are not crap at all!! Very Happy

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ACHTUNG!
ALLES TURISTEN UND NONTEKNISCHEN LOOKENPEEPERS!
DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKSEN.
IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS.
ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN.
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Luka



Joined: Jun 29, 2007
Posts: 1002
Location: Melb.

PostPosted: Fri Oct 08, 2010 5:47 am    Post subject: Reply with quote  Mark this post and the followings unread

cover up the lamps
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TekniK



Joined: Aug 10, 2008
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PostPosted: Fri Oct 08, 2010 8:58 am    Post subject: Reply with quote  Mark this post and the followings unread

There are some cool ppl here on the forum.
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The Bad Producer



Joined: Mar 08, 2009
Posts: 255
Location: The Manhole

PostPosted: Fri Oct 08, 2010 9:14 am    Post subject: Reply with quote  Mark this post and the followings unread

Luka wrote:
cover up the lamps


good advice! I remember the first one I made, and forgot to do that...

Embarassed

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Luka



Joined: Jun 29, 2007
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Location: Melb.

PostPosted: Fri Oct 08, 2010 4:58 pm    Post subject: Reply with quote  Mark this post and the followings unread

yup got stung by that one also Embarassed
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Lorenzo



Joined: Nov 09, 2008
Posts: 349
Location: Trieste - Italyjstan

PostPosted: Sat Oct 09, 2010 4:42 am    Post subject: Reply with quote  Mark this post and the followings unread

to cover up the lamps = OK

but... so... Question

so... EDIT

I resolve some questions by miself Very Happy

but:

I can't modulate dry/wet effect... so the ouput give me always 100% dry and the effect. ??

I have some problem with "Modulation" knob that seems do not affect the sound... I'm reading someone else have my same problem
but I don't understand how resolve it... Confused


Thank you very much in advance for your kindly replies!

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Last edited by Lorenzo on Sat Oct 09, 2010 10:13 am; edited 4 times in total
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Lorenzo



Joined: Nov 09, 2008
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Location: Trieste - Italyjstan

PostPosted: Mon Oct 11, 2010 11:41 am    Post subject: Reply with quote  Mark this post and the followings unread

Lorenzo wrote:

I can't modulate dry/wet effect... so the ouput give me always 100% dry and the effect. ??

I have some problem with "Modulation" knob that seems do not affect the sound... I'm reading someone else have my same problem
but I don't understand how resolve it... Confused



hmm... Confused
I do not understand if i could adjust Modulation knob with R18... I mean I try to turn R18 (and/or R21) but seems to not affect the sound.


I prefer to use a potenciometer to control "DEPTH" instead of the pedal to ammount on pcb. Could you suggest me a value for this pot??

Thanks

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The Bad Producer



Joined: Mar 08, 2009
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PostPosted: Mon Oct 11, 2010 3:38 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi Lorenzo,

I think I remember reading somewhere that mod only really makes a difference if you listen to both outputs - stereo. But I think JH sums it up well...

I think amount would be the same as phasing amplitude, I mean you could just get rid of amount and not have it at all, just connect the two switched contacts of the amount jack with a piece of wire - do you have a switched socket there at the moment?

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Lorenzo



Joined: Nov 09, 2008
Posts: 349
Location: Trieste - Italyjstan

PostPosted: Tue Oct 12, 2010 3:10 am    Post subject: Reply with quote  Mark this post and the followings unread

The Bad Producer wrote:
do you have a switched socket there at the moment?


ehm... I just use a 100k Pot...

I'm testing my Phaser with a keybord... it is working better than using my guitar.

I think Modulation knob effect the phase, now I'm using "R" ouput...
I have to built a Y cable so I will be abble to use L-R ouput Embarassed

It is a very good Phaser! My brother likes it!
But i can't understand if it is possible to modulate WET/DRY.

I can't turn down the DRY volume !!! Rolling Eyes

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