script56 Posted November 22, 2013 Report Share Posted November 22, 2013 Ar1 woofer dcr reading of 2.3 produces low output when removed outside of and installed in cabinet. Any ideas? Link to comment Share on other sites More sharing options...
RoyC Posted November 22, 2013 Report Share Posted November 22, 2013 Ar1 woofer dcr reading of 2.3 produces low output when removed outside of and installed in cabinet. Any ideas?The dcr reading is normal. Low output suggests a magnet issue.Roy Link to comment Share on other sites More sharing options...
Carlspeak Posted November 22, 2013 Report Share Posted November 22, 2013 The dcr reading is normal. Low output suggests a magnet issue.RoyI was thinking the same thing Link to comment Share on other sites More sharing options...
script56 Posted November 22, 2013 Author Report Share Posted November 22, 2013 Any way to repair ? Link to comment Share on other sites More sharing options...
Carlspeak Posted November 22, 2013 Report Share Posted November 22, 2013 The magnet will probably have to be de-magnetized and re-magnetized. If you have an Alnico speaker, I'm not sure that's possible. You'll have to check with a local pro-audio repair center; one that has one of these pieces of equipment. Link to comment Share on other sites More sharing options...
ar_pro Posted November 23, 2013 Report Share Posted November 23, 2013 Great Plains Audio re-magnetizes vintage Altec & JBL alnico drivers - you could ask if they'd work on an AR-1.http://www.greatplainsaudio.com/service.html Link to comment Share on other sites More sharing options...
script56 Posted December 17, 2013 Author Report Share Posted December 17, 2013 It produces low output. I sent it to get magnet recharged and it still does not work. I've got $200 for a replacement woofer if anyone has one. Link to comment Share on other sites More sharing options...
Pete B Posted December 17, 2013 Report Share Posted December 17, 2013 Does the spider look okay and is it supporting the voice coil so that it is reasonablywell centered with regard to the gap?Is it possible the cone ever had mass added?Measuring the T&S parameters might help to determine the problem. Link to comment Share on other sites More sharing options...
script56 Posted December 17, 2013 Author Report Share Posted December 17, 2013 That was my thought was the v.c. Was not centered because when I evenly push down gently there is a slight rub most ways I press on it. Link to comment Share on other sites More sharing options...
Pete B Posted December 17, 2013 Report Share Posted December 17, 2013 I'm talking about centering along the stroke of the cone, it would have to bevery far off center for there to be reduced output given how much overhangwas used.Where are you located? You might want to consider just sending it out to beworked on. Link to comment Share on other sites More sharing options...
script56 Posted December 17, 2013 Author Report Share Posted December 17, 2013 Where should I send it? I sent to Great Plains and they recharged magnet and sent it back. No fix Link to comment Share on other sites More sharing options...
Pete B Posted December 17, 2013 Report Share Posted December 17, 2013 I'm in Trumbull Connecticut and if you are near by I'd be willing to test the T&S parametersbut I don't have experience repairing the very old drivers like yours - and I'm rather short onfree time theses days. Roy, Carl, and Bill LeGall at Millersound are the usual choices:http://www.millersound.net/about.htmBill LeGall is nearly legendary in the field, here is a .pdf about him and there are web articleswith impressive pictures of his place and accomplishments:http://www.millersound.net/phila.pdfI always prefer to preserve the original dust cap - ask them if they can do that. Ask if theywill give you final T&S parameters. Link to comment Share on other sites More sharing options...
Carlspeak Posted December 17, 2013 Report Share Posted December 17, 2013 Where should I send it? I sent to Great Plains and they recharged magnet and sent it back. No fixDid you ask them if they tested it? Link to comment Share on other sites More sharing options...
script56 Posted December 17, 2013 Author Report Share Posted December 17, 2013 They said the "tested" it but I think it's extent was dcr. I did tell then just to recharge so maybe it's my fault. I figured it would be tested and worked more if needed. In going to pry off surround and spider which is very easy and re set and see if it works. Maybe something in v c gap. Link to comment Share on other sites More sharing options...
script56 Posted December 17, 2013 Author Report Share Posted December 17, 2013 Looks like voice coil came lose from spider. Stuck in gap. What now? Link to comment Share on other sites More sharing options...
script56 Posted December 17, 2013 Author Report Share Posted December 17, 2013 Got it loose! Link to comment Share on other sites More sharing options...
Carlspeak Posted December 17, 2013 Report Share Posted December 17, 2013 Make sure to clean that gap real good with tape before re-installing that VC for good!Be the time your're done with this, you'll be a good as Bill Legall! :-)) Link to comment Share on other sites More sharing options...
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