Hafler circuit - attentuating the rears

amt · 23rd December 2006, 01:37 AM

Well my JVC HT receiver looks to be expiring on me so I thought Id try the Hafler surround sound matrix setup with an old Pioneer SX. The diagram below shows a pot with 25-200 at 3watt spec used for attenuation of the rears. Isnt that actually considered a rheostat? Whats the best device to use for this?

http://kantack.com/surround/images/surgif1.gif

And Im guessing that this is what the old Dynaco Quad Adapter was.
Its also shown on ESP but w/o a control for the rears.

http://sound.westhost.com/project18.htm

amt

Geoff H · 23rd December 2006, 02:00 AM

Hi AMT. Yes, rheostat, wire wound pot. I used to use a 50 ohm 20w unit. Bit of over kill, it's what I had.

Geoff.

amt · 28th December 2006, 05:32 AM

Thanks for the confirmation Geoff. I will pick up a rheostat and see how it sounds.

amt

23rd December 2006, 01:37 AM	#1
amt diyAudio Member Join Date: Feb 2003 Location: oregon	Hafler circuit - attentuating the rears Well my JVC HT receiver looks to be expiring on me so I thought Id try the Hafler surround sound matrix setup with an old Pioneer SX. The diagram below shows a pot with 25-200 at 3watt spec used for attenuation of the rears. Isnt that actually considered a rheostat? Whats the best device to use for this? http://kantack.com/surround/images/surgif1.gif And Im guessing that this is what the old Dynaco Quad Adapter was. Its also shown on ESP but w/o a control for the rears. http://sound.westhost.com/project18.htm amt

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23rd December 2006, 02:00 AM	#2
Geoff H diyAudio Member Join Date: Oct 2006	Hi AMT. Yes, rheostat, wire wound pot. I used to use a 50 ohm 20w unit. Bit of over kill, it's what I had. Geoff.

28th December 2006, 05:32 AM	#3
amt diyAudio Member Join Date: Feb 2003 Location: oregon	Thanks for the confirmation Geoff. I will pick up a rheostat and see how it sounds. amt