Re: [xpantastic] Re: Autotune failure!
2008-10-02 by bjorn roland
Tip... A zener diode is always noisy . It generates ripples in the voltage. Ripples in referance voltage may cause autotune to fail. To avoid these ripples
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Re: [xpantastic] Re: Autotune failure!
2008-10-02 by Tony Cappellini
Hello Takis Where did you make the measurement? This sounds somewhat like the reading I got- when I measured one of the diodes near the battery. (as directed
Re: Autotune failure!
2008-10-02 by takisdamaschis
Hi Karl, the voltmeter reads 6.38v! Takis.
Re: [xpantastic] Pedal confusion
2008-09-29 by William Cason
I once tried to re-wire a guitar volume pedal to hook to the pedal inputs to my M12. It worked, but only in a really narrow range (like the center 1/4 of the
Re: No FM on one voice?
2008-09-28 by ktfiz
Thanks, I will try replacing the capacitor first. Hopefully that will be the cause of the problem. ktfiz
Re: pw failure fixed!
2008-09-26 by Karl
Your very welcome, Jeff Karl ... voice and it
pw failure fixed!
2008-09-25 by vco3@aol.com
HI thanks karl. it worked. I replaced all the 2.2 caps in that voice and it tunes fine now.. thanks jeff
Re: No FM on one voice?
2008-09-25 by Karl
Hi ktfiz, Lets hope it s not the AD7523. This part is rare anymore.I would bet it s the bypass capacitor Cx02. Where x is 2,3,4,5,6,7 depending on the voice
No FM on one voice?
2008-09-25 by ktfiz
Hi, One voice on my Xpander does not seem to respond to the addition of FM, otherwise it functions and sounds fine. All six voices pass all the self tests.
Re: Autotune failure!
2008-09-25 by Karl
Hi Takis, What does the your voltmeter read when you measure the zener(D805)? I keep thinking it s something to do with this circuit. I am going to open mine
Re: failed PW on voice3
2008-09-25 by Karl
... the ... a little ... and the problem ... analoguejeff ... Hi Jeff, If you feel good about working on your synth/soldering etc. I beleive this is an easy
Re: [xpantastic] Pedal confusion
2008-09-24 by PeWe
Yes, a pedal in general is just a pot you move w/ your foot,- but this not only for volume ... Manual says clearly: Pedal inputs for PEDALS or FOOTSWITCHES.
Re: [xpantastic] Pedal confusion
2008-09-24 by PeWe
Sorry, but I have connected a momentary ft.-switch AND a Oberheim OBX-P pedal ( not switch ) at my Xpander here. There are differences between Pedal Inputs
Re: [xpantastic] Pedal confusion
2008-09-24 by Jeremy Smith
... Ah, I think I understand. Thanks for the answers! The pedal is just a pot, a volume control (up/down). It looks like I ll have to get a PC-200 MKII
Re: [xpantastic] Pedal confusion
2008-09-24 by Tony Cappellini
... Yes- but these will only provide on/off type of modulation, not a smooth transition between a min and max value, like a pot would. Perhaps you could smooth
Re: [xpantastic] Pedal confusion
2008-09-24 by PeWe
Hi Tony ! It´s possible to connect momentary switches as also pedals w/ a pot inside to the Xpander. A Moog CV-pedal Modell 1120 p.ex. or a Oberheim OBX-P
failed PW on voice3
2008-09-24 by vco3@aol.com
HI, I just started getting a failed PW message on voice three on the xpander. THe voice still sounds fine when I reenable it. IT is just a little quieter.. I
Re: [xpantastic] Pedal confusion
2008-09-24 by Tony Cappellini
... You would have to assign Pedal 1/2 to a CC#. But I believe pedal 1/2 are intended to be used as on/off switches, not sources that can vary a signal, as in
Pedal confusion
2008-09-24 by Jeremy Smith
Hi folks, I recently bought a stereo volume pedal with a stereo 1/4 jack on it, and it s not working with the Crumar Toccata I have. But will it work in Pedal
Re: Autotune failure!
2008-09-24 by takisdamaschis
... Hi Karl, done everything you pointed out,no improvements! Anything else you can think of before we go for the DAC? Thanks,Takis.
Re: [xpantastic] XPander working with Soundquest finally
2008-09-24 by Jeremy Smith
Almost forgot. MIDI enables: SYSTEMX XMITCV PATCH all On Jeremy.
Re: [xpantastic] XPander working with Soundquest finally
2008-09-24 by Tony Cappellini
Jeremy I think you mean MidiQuest- Sound Quest is the name of the company. I you haven t done an update from web lately, you may want to. I found about 5-6
XPander working with Soundquest finally
2008-09-24 by Jeremy Smith
Hi all, I just wanted to share that I tried Soundquest 10 again for editing my Xpander and it worked! One useful trick is you crank up VCA2 so the note plays
Re: Autotune failure!
2008-09-16 by Karl
Hi Takis, ... Okay, lets look at D805, A zener diode which provides the reference for the DAC.Measure this with a good voltmeter, it should be 6.9V. Again, try
Re: Autotune failure!
2008-09-15 by takisdamaschis
Hi Karl, I have gone and replaced all parts you suggested, re-seated the dac and went over all solders! No improvement, I keep getting the same problem! I also
Re: [xpantastic] Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-10 by PeWe
Yep,- it was me. If I come across this site I´ve seen ( I believe) some time ago,- I post a link. AFAIR, - the main prob is: You´re able to find spring
Re: Autotune failure!
2008-09-10 by takisdamaschis
Wow Karl, are you sure you haven t designed this synth? You definately have amazing knowledge on it s design! I will replace all parts you mentioned except for
Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-10 by analogholic
Yeah, I hang at Musicplayer among other places. Sorry, I misread you. Ok, only from the pedal. In return, you might check how I can get my pitchwheel
Re: [xpantastic] Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-10 by PeWe
Hi ! Are you the one I see in the musicplayerforums too ... ? :-) Would be a great idea to ask this tech for a sync-mod being controlled by a Moog Model 1120
Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-10 by analogholic
Hi PeWe, My problem is that I´m not a tech by far, but get cool ideas all the time... I got in touch with a tech here in Sweden the other day. I told him
Re: Autotune failure!
2008-09-10 by Karl
Hi Takis, The other caps are Cx33 and Cx37 with x being 2,3,4,5,6,7 for each voice respectivly. And Yes they are the same 2.2uF 50V Make sure they are 50V
Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-10 by analogholic
... Yeah, I was kind of blown away myself that Doidic answered, since he is the president of Line 6! It was a long shot , but I thought what the heck. I think
Re: Autotune failure!
2008-09-10 by takisdamaschis
Hi Carl, yes I replaced all six Cx49 capacitors! What number are the other ones you re refering to?Are they also 2.2uF? Many thanks,Takis.
Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-10 by Karl
Hi All, I am thinking about trying this, but can anyone really tell the difference in one thousandth of a second. It seems like only a scope could tell the
Re: [xpantastic] WTB: CEM3374
2008-09-10 by Jeremy Smith
... I saw some of these (CEM3374) on sale on EBay last month. I bid 71 pounds but the total was 73. That shows what the going price is - I think. Cheers,
WTB: CEM3374
2008-09-10 by mm123 ah
I m trying to find a CEM 3374. Please email me at minime123 AT onebox DOT com (and not this hotmail account) if you ve got one for sale. We ve also got
Re: The Status of my Autotune & DAC Tests was Re: [xpantastic] Re: It's official- my Xpander is sic
2008-09-09 by Tony Cappellini
Since the VFD s have a limited life, you may not want to leave them on all the time.
Re: [xpantastic] Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-09 by William Cason
Wow, that s very interesting. I would love to see faster envelopes on my M12; I m wondering if that mod works for all destinations of that env? I m trying
Re: The Status of my Autotune & DAC Tests was Re: [xpantastic] Re: It's official- my Xpander is sick
2008-09-09 by William Cason
Hmmm, never thought of that one! Randy ... From: Karl Subject: The Status of my Autotune & DAC Tests was Re: [xpantastic] Re: It s
Re: [xpantastic] Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-09 by Jeremy Smith
... Wow! I m on a mailing list with Neil Bradley, for reverse engineering software. Small world. Jeremy.
Re: [xpantastic] Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-09 by PeWe
Hi analogholic ! I´d be interested in more details of a Minimoog D sync-mod if possible. I had that in mind since a long time, but couldn´t find a tech who
Re: [xpantastic] Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-09 by PeWe
Yep, it´s true for both synths,- but that doesn´t make the Xpander or Matrix12 a bad synth. They have other qualitys. If the Xpander or M12 is the only synth
Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-09 by Karl
Hi, Wow, I am impressed that Michel Doidic even reponded to this after 25 years. He obviously pulled out the schematics and gave it some thought. Very kind of
Re: Autotune failure!
2008-09-09 by Karl
Hello takisdamaschis, When you say output capacitors, are you talking about the small 2.2uF Cx49 at the edge of the voice board? There is one for each voice.
Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-09 by analogholic
Wow, I´m personally not obsessed with faster envelopes on my Matrix 12, I rather get reminded of it whenever I play it, don´t need a scope for that. It´s
Re: [xpantastic] Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-09 by Tony Cappellini
I personally do not understand this general obsession with making ... One does not need a scope to experience the slow envelopes on the Xpander, it is plainly
Re: [xpantastic] Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-09 by Tony Cappellini
BTW I know a guy who has the source code for the Xpander, if anyone is bored and wants to rewrite the OS over a weekend. ;-) (I don t think he wants to give it
Re: [xpantastic] Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-09 by PeWe
+1 !
Re: [xpantastic] Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-09 by PeWe
Hi ! I agree. If you speed up the CPU, all the software generated processes speed up too, not only the attack of envelopes. Eventually, if the envelopes become
Re: Faster envelopes on Matrix 12/Xpander - Conversation with one of the designers
2008-09-09 by eggwheatis
It would not change anything adding a faster 6809 and upping the speed of the clocking circuit, you would have to change a lot more in the circuit to cope with