copied from the internet:
From: kjh@pollux.usc.edu (Kenneth J. Hendrickson)
Newsgroups: rec.radio.shortwave
Subject: anti-chuffing mod for DX-380/ATS-808


I bought a Service Manual from Sangean to do this mod.  You may or may
not have to buy one to figure out which parts to remove. 

anti-Chuffing mod:	remove chip resistors R109 and R110 on the back
	side of the main board.  (You could also remove Q27 & Q28, but
	the resistors were far easier to get at.)

        ascii artwork:            ^
                                  !
         O   O****O           speaker
        **  *
        **R110****O
        **  *                audio amplifier section
       ***R109**
       **  *   *
       *  O    O
       O   *
            ***O

	The *'s are copper traces.  The O's are connections to the other
	side of the board.

	The section of the circuitry shown is on the back side of the
	main board, at the bottom, and at the left side of the speaker,
	about 2/3 of the way from the left side of the radio, as the
	speaker faces downward.  It is not necessary to remove the
	control board to perform this mod.

After performing the mod, it became obvious why Sangean used up circuit
board space, two transistors, and several biasing and bypassing
components, building this "feature" into the radio.  When switching
between bands, and when turning the radio on and off, there is a short
sharp squeal as the VCO settles to the right frequency.  It is annoying,
but it is offset by being able to tune up and down the SW bands as
slowly or quickly as desired, while listening to what is going on.  I
really like the radio after the modification.

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This message is Copyright (C) 1992 by Kenneth J. Hendrickson.
=========================================================================
Note: I haven't tried or verified this, proceed at your own risk. WA2ISE
/EX