MOTM

Ive had a day to digest my MOTM system. I must say Pauls designs and build is
A-One! He should win some kind of award! The sound is everything I expected: raw,
warm, and analog!  : )  and they even look cool!  One wish on the VCO, would be
preset octave switches. I once had a 2600 modded with this and it was a nice
addition. Anyone done this or have any thoughts ?
Also, In reference to the noise module.  Ive heard in the past  references to red
noise....anyone know what that is ?
Ringo Jim

--- In motm@egroups.com, weld@b... wrote:
> One wish on the VCO, would be
> preset octave switches. I once had a 2600 modded with this and it 
was a nice
> addition. Anyone done this or have any thoughts ?

Stooge Larry, this is your cue!

Moe

Red noise is just a "made-up" term for 'not-so-Pink' noise.

All of these are various degrees of low-pass filtered White noise. So, take
the WHITE output
into a '420 or '440 LPF and make all colors of the rainbow!

Paul S.

> ----- Original Message -----
> From: <weld@...>
> Ive had a day to digest my MOTM system.
> I must say Pauls designs and build is A-One!

You're preachin' to the choir.   HA HA.  That's why we keep buying and
bugging Paul about when the next module is coming out.

> He should win some kind of award!

He is rewarded with some loyal customers.  And, I think his wife is getting
a new kitchen.

> One wish on the VCO, would be preset octave switches.
> I once had a 2600 modded with this and it was a nice addition.
> Anyone done this or have any thoughts ?

I have always loved octave switches.  I have made a stand alone module for
my MOTM that does just that.  In fact, it has not only octaves but other
musically useful intervals.  However, it is strickly a DIY thing and not
available as a kit or constructed module.  There are two ways to approach
this issue:

# 1 - I first thought about a VERY simple module with a rotary switch and
some resistors and some trimmers that would produce a voltage that could be
connected to one of the MOTM-300 FM inputs.  As that voltage was switched,
it would add internally to the 300 VCO 1-volt-per-octave signal to give
octave or other interval switching.

However, my idea was frowned upone by those of greater minds and I was
convinced to do something a little better.  Hence # 2.

# 2 - This modules adds two DC voltages VERY accurately.  One voltage is the
1-volt-per-octave keyboaerd CV and the other is a voltage produced in the
module to produce octave or other musical intervals.  The output of this
module feeds the 300 VCO or other VCOs to give you instantly switchable
octaves and intervals.

You cannot use a generic mixing module for this function because even very
small variations or errors in the keyboard CV result in audible pitch error.

I can send you the information about the circuit.  I have one successfully
built on Paul's protoboard and it works fine.  However, it is strictly DIY.
If you just got your MOTM and are enjoying it, that means you must have
purchased assembled modules.  Many of us buy kits.  The circuit I have for
octave shifting could not be recommended for someone brand new to building
electronics.  It is not available as an assembled modules (unless you have
hundreds of dollars burning a hole in your pocket these days.  I am not
cheap, but everyone has a price.  HA HA).

Stooge Larry

Larry ....why so costly ?

'Cause I don't want to do it.  I am real short on time these days (its a
work hazard for me in the fall).

Is anyone else interested???  Perhaps we could get Larry to do a few for a more
afordable reward ????   : )  Larry ....why so costly ?
Ringo Jim

J. Larry Hendry wrote:

>
> > ----- Original Message -----
> > From: <weld@...>
> > Ive had a day to digest my MOTM system.
> > I must say Pauls designs and build is A-One!
>
> You're preachin' to the choir.   HA HA.  That's why we keep buying and
> bugging Paul about when the next module is coming out.
>
> > He should win some kind of award!
>
> He is rewarded with some loyal customers.  And, I think his wife is getting
> a new kitchen.
>
> > One wish on the VCO, would be preset octave switches.
> > I once had a 2600 modded with this and it was a nice addition.
> > Anyone done this or have any thoughts ?
>
> I have always loved octave switches.  I have made a stand alone module for
> my MOTM that does just that.  In fact, it has not only octaves but other
> musically useful intervals.  However, it is strickly a DIY thing and not
> available as a kit or constructed module.  There are two ways to approach
> this issue:
>
> # 1 - I first thought about a VERY simple module with a rotary switch and
> some resistors and some trimmers that would produce a voltage that could be
> connected to one of the MOTM-300 FM inputs.  As that voltage was switched,
> it would add internally to the 300 VCO 1-volt-per-octave signal to give
> octave or other interval switching.
>
> However, my idea was frowned upone by those of greater minds and I was
> convinced to do something a little better.  Hence # 2.
>
> # 2 - This modules adds two DC voltages VERY accurately.  One voltage is the
> 1-volt-per-octave keyboaerd CV and the other is a voltage produced in the
> module to produce octave or other musical intervals.  The output of this
> module feeds the 300 VCO or other VCOs to give you instantly switchable
> octaves and intervals.
>
> You cannot use a generic mixing module for this function because even very
> small variations or errors in the keyboard CV result in audible pitch error.
>
> I can send you the information about the circuit.  I have one successfully
> built on Paul's protoboard and it works fine.  However, it is strictly DIY.
> If you just got your MOTM and are enjoying it, that means you must have
> purchased assembled modules.  Many of us buy kits.  The circuit I have for
> octave shifting could not be recommended for someone brand new to building
> electronics.  It is not available as an assembled modules (unless you have
> hundreds of dollars burning a hole in your pocket these days.  I am not
> cheap, but everyone has a price.  HA HA).
>
> Stooge Larry