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Subject: Re: [motm] 490 parts questions

From: "Stephen Drake" <makeme1witheverything@...>
Date: 2008-05-30

The official word from Paul is -

>MOTM-410, MOTM-485, MOTM-490 stacked film, Panasonic ECQ-V type
>0.22uf is P4667
>0.33uf is P4669
>0.022uf is P4517
>0.047 is P4521

I built one of these recently. You'll need 2 different kinds of these ECQ-V's - 220nf=.22uf, so that one is the P4667-ND, and 100nf=.1uf, which is P4525-ND - both of these were from digikey. And you will indeed need one yellow box cap - it's a 1nf, or 001.uf - the standard kind, which is part 581-1N0J63 from mouser. The rest is the standard stuff.

On Fri, May 30, 2008 at 7:22 AM, Mark <yahoogroups@...> wrote:

On 5/29/08, Jeff Laity put forth:
>1. Do I need to match the transistors (should I order extras)?

Besides the ones inside the SSM2210, I do not believe that the
transistors were matched.

>2. The project calls for "100pf film caps."

It doesn't. The caps in the filter itself are 100nF, not 100pF.

>Can I use 0.1uF poly caps in their place?

Well, 0.1uF is the same as 100nF. Imho, "poly" is kind of a vague
term -- does it mean "polymer" or "polyester"?? While I don't know
exactly which capacitors it uses, I know it doesn't use the AVX
"yellow box" caps. They are these little brown radial caps.

Anyway, the type you use will have an effect on the sound. If no one
else chimes in, I can try pulling my 490 and see if there any
markings. A better description or the manufacturer's part number
isn't listed on the BOM??

>3. If no, can I use these for the 0.1mf caps on the 390?

I have no idea :)

.

--
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Stephen Drake
sduck409@...
makeme1witheverything@...