FET Equivalent required

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Hi,

need an equivalent for a SPF558 N-channel FET, havent been able to locate
any info on it via google, hoping someone here might have an old data book
with a few specs to give me some idea of what to replace it with. It's in an
old Peavey Deuce guitar amp.

thanks,

tim.

Re: FET Equivalent required

"timbo"
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** That would be because the part number is a Peavey " in house " one.

   Means it is a selected part.


 hoping someone here might have an old data book
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** No published data exists.

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** Comes right after the treble control ( in each channel)   - right ?

You have two options:

1. Contact the Peavey importer;

http://www.audioproducts.com.au/ContactUs.aspx


2.  Buy a few 2N5459s and try them.

When you get the drain pin to sit at about 10 to 12 volts DC  - you have it.

Possibly trim the value of the 15k in the path from source to ground.



.....   Phil



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