[sdiy] Re: Prophet 08 (was Roland DCOs)

[Dave Manley]

Better? In what ways?  That's a serious question.

Re process temps:  Even on high volume boards that are SMT, the option 
exists for low temp (thru hole) parts.  Reflow the top without the thru 
holes, add the thru holes and then wave solder, or do 'hand adds'.  Both 
are obviously more expensive, but it is commonly done.  You could then 
get your 'audiophile' grade capacitors on your VCF.

Would it sound any better?  Somebody want to do surgery on the P-08 or 
Evolver?

-Dave

harrybissell at wowway.com wrote:
> SMT capacitors have to endure high process temperatures...
> Only certain dielectrics are suitable ~and~ they will be
> much larger physically.
> 
> oh.... and better too :^)
> 
> H^) harry
> 
> 
> 
> On Wed, 27 Feb 2008 20:44:41 -0500, Bruce Duncan wrote
>>>>> I was also
>>>>> surprised by the ceramic chip caps used in the filter, after hearing
>>>>> discussion about the suitability of different cap materials for audio
>>>>> use (makes me wonder if the Moog LP uses chip caps in their filter).
>>>> Its peculiar indeed, i have studied the Andromeda and it seams to
>>>> use ceramic caps as well.
>>> Although it might not be a great idea, commercial synths often seem
>>> to use it as a way to keep costs down. I can't think of any other
>>> reason why you'd want to put ceramics in there.
>> SMT film capacitors are large in size, expensive and hard to find in 
>> a wide range of values in anything other than garden variety polyester.
>> This is probably the reason ceramics end up on SMT boards in 
>> commercial synths.
>>
>> Bruce
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> 
> 
> Harry Bissell & Nora Abdullah 4eva
> 
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