Analogue systems

Hello everyone,

I've just started my modular project with a minisytem and am having a few problems - i think their may be a fault with this old system i bought second-hand. Initially the EG depth pot was very noisy and tempramental but the system overall worked. Now i can only get the very tiniest signal from it, even when just testing by sending an osc straight to the VCA and turning up the signal and initial level - its really really quiet - if i played another synth with my monitors that loud i would loose roof tiles! Seems like somethings broken in the VCA now as well as a bad EG depth pot - any thoughts before i send i bother Bob with this and send it off for repair?

Cockpit trouble is always a possibility of course, but i think the basic test shows somethings up?

thanks, Dan

Dan

If all your modules are giving you trouble it sounds like it could be PSU
related.However, first of all, I suggest you unplug all the modules except
one, for example the VCA, and try that.

It is conceivable that a dodgy connection in one module may be causing
problems with others.

Make sure the module is plugged in correctly with no pins bent, and the
connector the right way up.
If this works, then add each module and test one by one (making sure you
power down before plugging each one in) and then you might isolate which
module is troublesome.

If you still get problems with the first module then it would seem that the
PSU is faulty. If so, then you probably need to send it back to Bob. A
friend's system had a PSU issue caused by a faulty bridge rectifier, but I
wouldn't mess about with the PSU unless you're VERY confident with
electronics.

Good luck

Sean



On 22 September 2010 07:58, daniel_axon <daniel_axon@yahoo.co.uk> wrote:

>
>
> Hello everyone,
>
> I've just started my modular project with a minisytem and am having a few
> problems - i think their may be a fault with this old system i bought
> second-hand. Initially the EG depth pot was very noisy and tempramental but
> the system overall worked. Now i can only get the very tiniest signal from
> it, even when just testing by sending an osc straight to the VCA and turning
> up the signal and initial level - its really really quiet - if i played
> another synth with my monitors that loud i would loose roof tiles! Seems
> like somethings broken in the VCA now as well as a bad EG depth pot - any
> thoughts before i send i bother Bob with this and send it off for repair?
>
> Cockpit trouble is always a possibility of course, but i think the basic
> test shows somethings up?
>
> thanks, Dan
>
>  
>


[Non-text portions of this message have been removed]

Hi Sean,

Thanks for the advice, much appreciated - so take everything out then start with 
just an osc and the VCA and do the initial level test?

Can you also tell me are the new RS95 oscs much better than the old 90's? i've 
seen some 90's second hand but wonder if i should stump up the extra for the 
newer 95's?

I get a sweaty forehead when working with anything over 12V so will stay clear 
of the PSU!!!

thanks again, Dan




________________________________

From: Sean Williams <sean@artifactrecords.com>
To: analogue_systems@yahoogroups.com
Sent: Wed, 22 September, 2010 8:59:36
Subject: Re: [analogue_systems] Before i bother Bob with cockpit trouble!...

Dan

If all your modules are giving you trouble it sounds like it could be PSU
related.However, first of all, I suggest you unplug all the modules except
one, for example the VCA, and try that.

It is conceivable that a dodgy connection in one module may be causing
problems with others.

Make sure the module is plugged in correctly with no pins bent, and the
connector the right way up.
If this works, then add each module and test one by one (making sure you
power down before plugging each one in) and then you might isolate which
module is troublesome.

If you still get problems with the first module then it would seem that the
PSU is faulty. If so, then you probably need to send it back to Bob. A
friend's system had a PSU issue caused by a faulty bridge rectifier, but I
wouldn't mess about with the PSU unless you're VERY confident with
electronics.

Good luck

Sean



On 22 September 2010 07:58, daniel_axon <daniel_axon@yahoo.co.uk> wrote:

>
>
> Hello everyone,
>
> I've just started my modular project with a minisytem and am having a few
> problems - i think their may be a fault with this old system i bought
> second-hand. Initially the EG depth pot was very noisy and tempramental but
> the system overall worked. Now i can only get the very tiniest signal from
> it, even when just testing by sending an osc straight to the VCA and turning
> up the signal and initial level - its really really quiet - if i played
> another synth with my monitors that loud i would loose roof tiles! Seems
> like somethings broken in the VCA now as well as a bad EG depth pot - any
> thoughts before i send i bother Bob with this and send it off for repair?
>
> Cockpit trouble is always a possibility of course, but i think the basic
> test shows somethings up?
>
> thanks, Dan
>
>  
>


[Non-text portions of this message have been removed]



------------------------------------

Yahoo! Groups Links




      

[Non-text portions of this message have been removed]

Dan


> Hi Sean,
>
>
> Thanks for the advice, much appreciated - so take everything out then start
> with
> just an osc and the VCA and do the initial level test?
>
> Or even just try the VCO on its own

> Can you also tell me are the new RS95 oscs much better than the old 90's?
> i've
> seen some 90's second hand but wonder if i should stump up the extra for
> the
> newer 95's?
>
> I have 2 RS-90 and 1 RS-95e. It's nice to have the sine wave output on the
95e but aside from that there's not much (any?) material difference - except
with the "e" you have a multi-turn pot which is great sometimes and
frustrating at other times. Oh, and not wishing to resurrect old debates,
but the sine wave on the RS-95 isn't the purest thing so if it's pristine FM
or ring modulation you're after then you're probably better off using an
oscillating filter for your sine wave.

Personally, I find it useful to have the sine wave anyway, but I use the saw
and pulse out much more often and the characteristic sound of the AS
oscillators is the shape modulation so having a mix of RS-90 and RS-95 is a
good thing.


> I get a sweaty forehead when working with anything over 12V so will stay
> clear
> of the PSU!!!
>
> thanks again, Dan
>
> atb
Sean


[Non-text portions of this message have been removed]

The sine output is great because in addition to giving you (something close
to) a sine wave, you can also shape it in two ways.  With the tri/saw morph
pot you can morph the sine into a curvy-saw which sounds good, and different
from the linear saw.  Also with the sine shape CV in, you can change the
tone even more, adding some pleasant overtones to the sine, and get even
more complex waveforms by changing both parameters at the same time.

I also found the 95e to exhibit a bit more stability and keyboard tracking
accuracy.  I really like the multiturn dial since it makes it very easy to
find the exact pitch you want.  It also gives you a lot more control when
setting up FM sounds.  And it looks fantastic.

On Wed, Sep 22, 2010 at 1:15 AM, Sean Williams <sean@artifactrecords.com>wrote:

>
>
> Dan
>
>
> > Hi Sean,
> >
> >
> > Thanks for the advice, much appreciated - so take everything out then
> start
> > with
> > just an osc and the VCA and do the initial level test?
> >
> > Or even just try the VCO on its own
>
>
> > Can you also tell me are the new RS95 oscs much better than the old 90's?
> > i've
> > seen some 90's second hand but wonder if i should stump up the extra for
> > the
> > newer 95's?
> >
> > I have 2 RS-90 and 1 RS-95e. It's nice to have the sine wave output on
> the
> 95e but aside from that there's not much (any?) material difference -
> except
> with the "e" you have a multi-turn pot which is great sometimes and
> frustrating at other times. Oh, and not wishing to resurrect old debates,
> but the sine wave on the RS-95 isn't the purest thing so if it's pristine
> FM
> or ring modulation you're after then you're probably better off using an
> oscillating filter for your sine wave.
>
> Personally, I find it useful to have the sine wave anyway, but I use the
> saw
> and pulse out much more often and the characteristic sound of the AS
> oscillators is the shape modulation so having a mix of RS-90 and RS-95 is a
> good thing.
>
>
> > I get a sweaty forehead when working with anything over 12V so will stay
> > clear
> > of the PSU!!!
> >
> > thanks again, Dan
> >
> > atb
> Sean
>
>
> [Non-text portions of this message have been removed]
>
>  
>


[Non-text portions of this message have been removed]

Hi there,

Not sure if this is the place to ask, but i just wondered if anyone had any 
modules they were selling? I'm looking for an ADSR, osc and maybe a few other 
bits - interested to hear what you've got if you're shifting anything....

Have now doubled my mini-system to 6U and loving it!

thanks, Dan




________________________________

From: Sean Williams <sean@artifactrecords.com>
To: analogue_systems@yahoogroups.com
Sent: Wed, 22 September, 2010 9:15:24
Subject: Re: [analogue_systems] Before i bother Bob with cockpit trouble!...

  
Dan

> Hi Sean,
>
>
> Thanks for the advice, much appreciated - so take everything out then start
> with
> just an osc and the VCA and do the initial level test?
>
> Or even just try the VCO on its own

> Can you also tell me are the new RS95 oscs much better than the old 90's?
> i've
> seen some 90's second hand but wonder if i should stump up the extra for
> the
> newer 95's?
>
> I have 2 RS-90 and 1 RS-95e. It's nice to have the sine wave output on the
95e but aside from that there's not much (any?) material difference - except
with the "e" you have a multi-turn pot which is great sometimes and
frustrating at other times. Oh, and not wishing to resurrect old debates,
but the sine wave on the RS-95 isn't the purest thing so if it's pristine FM
or ring modulation you're after then you're probably better off using an
oscillating filter for your sine wave.

Personally, I find it useful to have the sine wave anyway, but I use the saw
and pulse out much more often and the characteristic sound of the AS
oscillators is the shape modulation so having a mix of RS-90 and RS-95 is a
good thing.

> I get a sweaty forehead when working with anything over 12V so will stay
> clear
> of the PSU!!!
>
> thanks again, Dan
>
> atb
Sean

[Non-text portions of this message have been removed]





      

[Non-text portions of this message have been removed]

I have the following which could go to a new home:

RS165 Signal Mixer
RS280 Divider
RS270 Adapter

- Rory

On Fri, Oct 15, 2010 at 8:20 AM, daniel axon <daniel_axon@yahoo.co.uk>wrote:

>
>
> Hi there,
>
> Not sure if this is the place to ask, but i just wondered if anyone had any
>
> modules they were selling? I'm looking for an ADSR, osc and maybe a few
> other
> bits - interested to hear what you've got if you're shifting anything....
>
> Have now doubled my mini-system to 6U and loving it!
>
> thanks, Dan
>
>
> ________________________________
> From: Sean Williams <sean@artifactrecords.com <sean%40artifactrecords.com>
> >
> To: analogue_systems@yahoogroups.com <analogue_systems%40yahoogroups.com>
> Sent: Wed, 22 September, 2010 9:15:24
>
> Subject: Re: [analogue_systems] Before i bother Bob with cockpit
> trouble!...
>
>
> Dan
>
> > Hi Sean,
> >
> >
> > Thanks for the advice, much appreciated - so take everything out then
> start
> > with
> > just an osc and the VCA and do the initial level test?
> >
> > Or even just try the VCO on its own
>
> > Can you also tell me are the new RS95 oscs much better than the old 90's?
> > i've
> > seen some 90's second hand but wonder if i should stump up the extra for
> > the
> > newer 95's?
> >
> > I have 2 RS-90 and 1 RS-95e. It's nice to have the sine wave output on
> the
> 95e but aside from that there's not much (any?) material difference -
> except
> with the "e" you have a multi-turn pot which is great sometimes and
> frustrating at other times. Oh, and not wishing to resurrect old debates,
> but the sine wave on the RS-95 isn't the purest thing so if it's pristine
> FM
> or ring modulation you're after then you're probably better off using an
> oscillating filter for your sine wave.
>
> Personally, I find it useful to have the sine wave anyway, but I use the
> saw
> and pulse out much more often and the characteristic sound of the AS
> oscillators is the shape modulation so having a mix of RS-90 and RS-95 is a
> good thing.
>
> > I get a sweaty forehead when working with anything over 12V so will stay
> > clear
> > of the PSU!!!
> >
> > thanks again, Dan
> >
> > atb
> Sean
>
> [Non-text portions of this message have been removed]
>
> [Non-text portions of this message have been removed]
>
>  
>


[Non-text portions of this message have been removed]