ligs Posted February 25, 2012 Report Share Posted February 25, 2012 As a community service I have attached some 6.5-10 inch woofer data from 1997 Parts Express Summer Sale Catalog of AR Factory Buyout. Link to comment Share on other sites More sharing options...
bikdav Posted February 29, 2012 Report Share Posted February 29, 2012 Thank you. This just gave me some food for thought. I have a pair of BA A70s that need new woofers and I just wanted to get some idea _ perameter wise _ as to what might work O.K. in place of the originals. This will be a "restification" project. I know that these AR woofers are no longer made obviously. But, after seeing these specs I have an idea what to shoot for. Link to comment Share on other sites More sharing options...
ligs Posted February 29, 2012 Author Report Share Posted February 29, 2012 You are welcome. I did refoam a pair of BA A150 3-way with 10 inch woofers. Nice warm bass if I remember. Link to comment Share on other sites More sharing options...
michiganpat Posted March 1, 2012 Report Share Posted March 1, 2012 thanks...I have some home built speakers using a PE buyout 6.5" woofer...I need to pull one to look at the PN, but they cross reference to the holographic imaging M1 & M4 midwoof.in my application they sound wonderful. I've got them running full range, with a 2nd order crossover on some vifa D27TG-45 tweets crossed at 3500 hz. they're in a ported box about 3/4 the size of a smaller advent, and dug just as low, if not a little lower than my SA's 9" woofers. Link to comment Share on other sites More sharing options...
ligs Posted March 1, 2012 Author Report Share Posted March 1, 2012 I had AR M1 once, The AR PN for M1 woofer is 1210130-1A. In AR M1 the woofer is connected directly to the terminal while the 3.5 k Hz high pass to the 3/4 dome tweeter is a simple 4.5uF/0.3 mH iron core 12 db/oct parallel network.AR 6.5-338(PE number) for AR M1 Vas 1.13 liters. Q ts 0.43 Fs 30.5 . very low Fs. This is what I have( needs double checking). Link to comment Share on other sites More sharing options...
bikdav Posted March 1, 2012 Report Share Posted March 1, 2012 thanks...I have some home built speakers using a PE buyout 6.5" woofer...I need to pull one to look at the PN, but they cross reference to the holographic imaging M1 & M4 midwoof.in my application they sound wonderful. I've got them running full range, with a 2nd order crossover on some vifa D27TG-45 tweets crossed at 3500 hz. they're in a ported box about 3/4 the size of a smaller advent, and dug just as low, if not a little lower than my SA's 9" woofers. It's interesting how running a woofer "direct" with a crossover only on the tweeter leg works almost flawlessly many times. I did just that with a pair of Large Advent 5002 that I had to repair almost all throughout. Link to comment Share on other sites More sharing options...
michiganpat Posted March 1, 2012 Report Share Posted March 1, 2012 depends on the design of the woofer, and it's response...the 8" AR woofer used in the 7/17/18 etc, the 8" EPI woofer, or the 10" seas woofer the dynaco A25 use have a flat response out to 2+khz and a smooth natural roll off that no choke was needed. Link to comment Share on other sites More sharing options...
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