vacs2000 Posted October 23, 2001 Share Posted October 23, 2001 Hi, After follwoing a discussion in Audio-Asylum, I show a surprising comment that on the type B supplied Cornwall speakers there is a 2.6 H coil attached to the woofer. On both speakers of mode I I have there is no coil. Only the xover board with the 2 oil caps and the 2 trsf. Something missing here ?!?!? thank you george ------------------ --------------------- Fisher 400-CX pre-amp Fisher 100 (EL37) monoblocks (3) Fisher 101R tuner Fisher 100-MPX Sony SCD-333ES Ampex 1260 reel to rell Garrard 401/SME3012R/Grado Speakers... ------------------------- Quote Link to comment Share on other sites More sharing options...
JonM Posted October 23, 2001 Share Posted October 23, 2001 I think the two "transformers" you see are really the autoformer (that sets the squawker and tweeter level) and the inductor (coil) that rolls off the woofer above 600 Hz. It looks like a transformer, but it only has a primary - so it's a coil. Quote Link to comment Share on other sites More sharing options...
Malcolm Posted October 23, 2001 Share Posted October 23, 2001 Yep, the "transformer" with just two leads and no taps is a transformer core inductor. It could just as well be an air core inductor (coil). Quote Link to comment Share on other sites More sharing options...
djk Posted October 24, 2001 Share Posted October 24, 2001 Posted by djk (M) on October 23, 2001 at 01:34:12 In Reply to: Re: Oh, I meant the second transformer posted by vacs on October 22, 2001 at 16:11:42: The signal from the input goes through a 2.6mH inductor to the K33 woofer.From the input it also goes through a 4µF cap to tap 5 on the autoformer.Tap 4 on the autoformer goes through a 2µf cap to the K77 tweeter.Tap 3 on the autoformer goes to the K55 midrange driver.All grounds common with tap 0 on the autoformer. Subject: Re: Audio Asylum Email from vacs To: vasileia@slac.stanford.edu --- vasileia@slac.stanford.edu wrote: > Audio Asylum Email from vacs: > > Hi > I show your posting. YOu are sure that on type B > network on Cornwall there is a coil. On both my > speakers there is only the 2 trsnf and the 2 oil > capacitors. > thank you > george > > Music Lover/Audiophile djk: The 2.6mH inductor is a laminated steel 'E' core type and looks similar to the autoformer. Quote Link to comment Share on other sites More sharing options...
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