Search found 27 matches

No sorry, just as the last layout that was posted by someone else is plus these changes.

Shouldn't be too hard to follow, I tried to make it as clear as I could. You could recreate the existing lay ...

Cool, it seems people are starting out building stuff by using this, which I did, so thought it'd better not be misleading

Here's some mods I do on this circuit to keep the res under control, overd ...

The +/- jumpers should be switched on tl074.
Pin 4 to -, pin 12 to +

Google tl074 images

http://www.syntax.com.tw/upload/IC-TL074_m.jpg

LM13700 is opposite but correct in the last updated la ...

I'll try and keep that in mind (not fucking it up)

The VCF and VCA are going to work better on bipolar (which are the main parts of the whole circuit) and I already know how they 'convert', having ...

So the input and output jack grounds, would go to the dc adapter's ground, regardless of the rest of the circuit?

I think that might be the one, use 9v then the cmos are happy either way

Wonder ...

The service manual says, there will be hum if using an external power source with the current power scheme.

Also I already have lots of 15 and 12v regulators and don't want to use batteries.

Se ...

Hey there, I've been trying to find similar circuits to the ones in the synare 3 to get an answer, thought someone might be able to let me know off the bat..

http://clacktronics.co.uk/wp-content/up ...

There's very little difference between using matched and unmatched transistors with mine in its current state. Added a 1k trimpot instead of the 330R from pin 6 of the CA3146 to ground, nothing seems ...

Well, its either a strange beast or I'm having quite a fail. At different voltages the controls behave completely different. At 18v the res doesn't do anything, freq rolls off highs. At 15v the res ad ...

I am getting better results at around +-15v, but have to crank the gain on the output amp and turn the output volume up? to get it self oscillating, although there's no change in pitch of the oscillat ...

BC547's (matched, but not carefully, I think it should pass audio even if they're not matched, not sure about that though) BC558 / 2N3906 for expo converter (anything seems to work here) and CA3146, s ...

Yeah, mines running at +/-18v, so I'm almost certain the different voltages can't be the problem.

I'm having the same issue here... (just the 'res' signal seems to be being filtered)

Here's the stripboard layout I've done, based on the Yusynth version but using a LM741 as a differential amp as ...

I though I should add that the transistors aren't matched, am using bc547's.

It definitely works but would matching them ease the hum?

Andy

Ok thanks

I've used the psu with a few MS20 filters though, which when wiring the grounds to the jack seems to eliminate any hum / noise.

There are 100uf's and zeners on the psu rails and 100n's ...

Would anyone know if this was a normal level of hum?

Its the yusynth version, with the multiple inputs.

Input amp is set to be hot for overdriving.

Its def coming from the filter, because ...

Well it is a few months ago now that I build the filter but there is one thing that is bugging me. If I drive 2 soundsources into the VCF I have to be very carefull not to turn on the volumes of the i ...

You can get high pass by pulling the grounded end of C4 (1n) up, using that end as the input.

Cool, I put a 1k resistor in parallel to the 1k8 at r7 to get more response from a 5k pot. The pot value doesn't seem to matter as much as that resistor.

Regarding the freq pot

Should be totally fine on 12v, just lower headroom? this is as far as I know

Sounds good, but way too much res at this stage. I think its more usable, as an effects box to have no gain drop when no res is used and the res taking the output only a little higher than unity when ...

OK sussed it, funny how the act of asking somehow brings a solution on its own. There is not supposed to be a cut on the layout between pin 11 (TL074) Vee (-15) and the jumper to -15v, which should ge ...

Hey, I've built this with the cuts between the 2 transistors and between the cv resistors, and have also soldered in the base of one of the transistors where on the layout it is floating.

I am wond ...

Thanks for the reply, I've tried 390pf's and 250uf for C8 with little change. Its funny that no thread about this filter, of which there are a lot, mentions the lack of a good sweep, from open to clos ...

Any progress with this filter? a working example anyone?

I am going to build it, just i've built a wsG filter and a 13700 MS20 9v, both which don't work properly, which could be me, but i don't kno ...

Author	Message
Topic: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?
hoyager Replies: 87 Views: 189529	Posted: Wed Aug 06, 2014 12:15 am Subject: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard? Forum: DIY Hardware and Software » The layout factory
hoyager Replies: 87 Views: 189529	No sorry, just as the last layout that was posted by someone else is plus these changes. Shouldn't be too hard to follow, I tried to make it as clear as I could. You could recreate the existing lay ...
Topic: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?
hoyager Replies: 87 Views: 189529	Posted: Tue Aug 05, 2014 9:57 pm Subject: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard? Forum: DIY Hardware and Software » The layout factory
hoyager Replies: 87 Views: 189529	Cool, it seems people are starting out building stuff by using this, which I did, so thought it'd better not be misleading Here's some mods I do on this circuit to keep the res under control, overd ...
Topic: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?
hoyager Replies: 87 Views: 189529	Posted: Tue Aug 05, 2014 5:24 pm Subject: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard? Forum: DIY Hardware and Software » The layout factory
hoyager Replies: 87 Views: 189529	The +/- jumpers should be switched on tl074. Pin 4 to -, pin 12 to + Google tl074 images http://www.syntax.com.tw/upload/IC-TL074_m.jpg LM13700 is opposite but correct in the last updated la ...
Topic: Synare 3 bipolar supply?
hoyager Replies: 6 Views: 2361	Posted: Fri Aug 02, 2013 10:28 pm Subject: Synare 3 bipolar supply? Forum: DIY Hardware and Software
hoyager Replies: 6 Views: 2361	I'll try and keep that in mind (not fucking it up) The VCF and VCA are going to work better on bipolar (which are the main parts of the whole circuit) and I already know how they 'convert', having ...
Topic: Synare 3 bipolar supply?
hoyager Replies: 6 Views: 2361	Posted: Fri Aug 02, 2013 6:27 am Subject: Synare 3 bipolar supply? Forum: DIY Hardware and Software
hoyager Replies: 6 Views: 2361	So the input and output jack grounds, would go to the dc adapter's ground, regardless of the rest of the circuit? I think that might be the one, use 9v then the cmos are happy either way Wonder ...
Topic: Synare 3 bipolar supply?
hoyager Replies: 6 Views: 2361	Posted: Wed Jul 31, 2013 2:43 pm Subject: Synare 3 bipolar supply? Forum: DIY Hardware and Software
hoyager Replies: 6 Views: 2361	The service manual says, there will be hum if using an external power source with the current power scheme. Also I already have lots of 15 and 12v regulators and don't want to use batteries. Se ...
Topic: Synare 3 bipolar supply?
hoyager Replies: 6 Views: 2361	Posted: Tue Jul 30, 2013 6:30 pm Subject: Synare 3 bipolar supply? Forum: DIY Hardware and Software
hoyager Replies: 6 Views: 2361	Hey there, I've been trying to find similar circuits to the ones in the synare 3 to get an answer, thought someone might be able to let me know off the bat.. http://clacktronics.co.uk/wp-content/up ...
Topic: minimoog vcf - odd pot behavior
hoyager Replies: 14 Views: 12565	Posted: Thu Jun 07, 2012 8:55 pm Subject: minimoog vcf - odd pot behavior Forum: DIY Hardware and Software » YuSynth
hoyager Replies: 14 Views: 12565	There's very little difference between using matched and unmatched transistors with mine in its current state. Added a 1k trimpot instead of the 330R from pin 6 of the CA3146 to ground, nothing seems ...
Topic: minimoog vcf - odd pot behavior
hoyager Replies: 14 Views: 12565	Posted: Thu Jun 07, 2012 5:53 pm Subject: minimoog vcf - odd pot behavior Forum: DIY Hardware and Software » YuSynth
hoyager Replies: 14 Views: 12565	Well, its either a strange beast or I'm having quite a fail. At different voltages the controls behave completely different. At 18v the res doesn't do anything, freq rolls off highs. At 15v the res ad ...
Topic: minimoog vcf - odd pot behavior
hoyager Replies: 14 Views: 12565	Posted: Wed Jun 06, 2012 9:51 pm Subject: minimoog vcf - odd pot behavior Forum: DIY Hardware and Software » YuSynth
hoyager Replies: 14 Views: 12565	I am getting better results at around +-15v, but have to crank the gain on the output amp and turn the output volume up? to get it self oscillating, although there's no change in pitch of the oscillat ...
Topic: minimoog vcf - odd pot behavior
hoyager Replies: 14 Views: 12565	Posted: Wed Jun 06, 2012 5:57 pm Subject: minimoog vcf - odd pot behavior Forum: DIY Hardware and Software » YuSynth
hoyager Replies: 14 Views: 12565	BC547's (matched, but not carefully, I think it should pass audio even if they're not matched, not sure about that though) BC558 / 2N3906 for expo converter (anything seems to work here) and CA3146, s ...
Topic: minimoog vcf - odd pot behavior
hoyager Replies: 14 Views: 12565	Posted: Wed Jun 06, 2012 4:02 pm Subject: minimoog vcf - odd pot behavior Forum: DIY Hardware and Software » YuSynth
hoyager Replies: 14 Views: 12565	Yeah, mines running at +/-18v, so I'm almost certain the different voltages can't be the problem.
Topic: minimoog vcf - odd pot behavior
hoyager Replies: 14 Views: 12565	Posted: Wed Jun 06, 2012 5:54 am Subject: minimoog vcf - odd pot behavior Forum: DIY Hardware and Software » YuSynth
hoyager Replies: 14 Views: 12565	I'm having the same issue here... (just the 'res' signal seems to be being filtered) Here's the stripboard layout I've done, based on the Yusynth version but using a LM741 as a differential amp as ...
Topic: Stripboard Synthacon Hum
hoyager Replies: 7 Views: 12313	Posted: Tue Apr 24, 2012 4:35 am Subject: Stripboard Synthacon Hum Forum: DIY Hardware and Software » YuSynth
hoyager Replies: 7 Views: 12313	I though I should add that the transistors aren't matched, am using bc547's. It definitely works but would matching them ease the hum? Andy
Topic: Stripboard Synthacon Hum
hoyager Replies: 7 Views: 12313	Posted: Mon Apr 23, 2012 6:56 pm Subject: Stripboard Synthacon Hum Forum: DIY Hardware and Software » YuSynth
hoyager Replies: 7 Views: 12313	Ok thanks I've used the psu with a few MS20 filters though, which when wiring the grounds to the jack seems to eliminate any hum / noise. There are 100uf's and zeners on the psu rails and 100n's ...
Topic: Stripboard Synthacon Hum
hoyager Replies: 7 Views: 12313	Posted: Mon Apr 23, 2012 6:24 pm Subject: Stripboard Synthacon Hum Forum: DIY Hardware and Software » YuSynth
hoyager Replies: 7 Views: 12313	Would anyone know if this was a normal level of hum? Its the yusynth version, with the multiple inputs. Input amp is set to be hot for overdriving. Its def coming from the filter, because ...
Topic: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?
hoyager Replies: 87 Views: 189529	Posted: Mon Mar 19, 2012 11:17 pm Subject: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard? Forum: DIY Hardware and Software » The layout factory
hoyager Replies: 87 Views: 189529	Well it is a few months ago now that I build the filter but there is one thing that is bugging me. If I drive 2 soundsources into the VCF I have to be very carefull not to turn on the volumes of the i ...
Topic: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?
hoyager Replies: 87 Views: 189529	Posted: Sun Oct 30, 2011 5:19 pm Subject: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard? Forum: DIY Hardware and Software » The layout factory
hoyager Replies: 87 Views: 189529	You can get high pass by pulling the grounded end of C4 (1n) up, using that end as the input.
Topic: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?
hoyager Replies: 87 Views: 189529	Posted: Sat Oct 15, 2011 3:03 am Subject: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard? Forum: DIY Hardware and Software » The layout factory
hoyager Replies: 87 Views: 189529	Cool, I put a 1k resistor in parallel to the 1k8 at r7 to get more response from a 5k pot. The pot value doesn't seem to matter as much as that resistor. Regarding the freq pot
Topic: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?
hoyager Replies: 87 Views: 189529	Posted: Sat Oct 08, 2011 9:46 pm Subject: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard? Forum: DIY Hardware and Software » The layout factory
hoyager Replies: 87 Views: 189529	Should be totally fine on 12v, just lower headroom? this is as far as I know
Topic: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?
hoyager Replies: 87 Views: 189529	Posted: Tue Oct 04, 2011 3:46 am Subject: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard? Forum: DIY Hardware and Software » The layout factory
hoyager Replies: 87 Views: 189529	Sounds good, but way too much res at this stage. I think its more usable, as an effects box to have no gain drop when no res is used and the res taking the output only a little higher than unity when ...
Topic: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?
hoyager Replies: 87 Views: 189529	Posted: Mon Oct 03, 2011 10:58 pm Subject: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard? Forum: DIY Hardware and Software » The layout factory
hoyager Replies: 87 Views: 189529	OK sussed it, funny how the act of asking somehow brings a solution on its own. There is not supposed to be a cut on the layout between pin 11 (TL074) Vee (-15) and the jumper to -15v, which should ge ...
Topic: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?
hoyager Replies: 87 Views: 189529	Posted: Mon Oct 03, 2011 3:00 am Subject: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard? Forum: DIY Hardware and Software » The layout factory
hoyager Replies: 87 Views: 189529	Hey, I've built this with the cuts between the 2 transistors and between the cv resistors, and have also soldered in the base of one of the transistors where on the layout it is floating. I am wond ...
Topic: WSG filter vero layout
hoyager Replies: 12 Views: 40139	Posted: Fri May 20, 2011 10:19 pm Subject: WSG filter vero layout Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
hoyager Replies: 12 Views: 40139	Thanks for the reply, I've tried 390pf's and 250uf for C8 with little change. Its funny that no thread about this filter, of which there are a lot, mentions the lack of a good sweep, from open to clos ...
Topic: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?
hoyager Replies: 87 Views: 189529	Posted: Fri May 20, 2011 1:16 am Subject: MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard? Forum: DIY Hardware and Software » The layout factory
hoyager Replies: 87 Views: 189529	Any progress with this filter? a working example anyone? I am going to build it, just i've built a wsG filter and a 13700 MS20 9v, both which don't work properly, which could be me, but i don't kno ...