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Replacement woofers för A R 4xa


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Hi everyone!

I recently found a pair of AR 4xa in a fleamarket. The exterior was amazingly good for a speaker of that age. But when hooked up i discovered that they had problems with the tweeter pot (I´ve ordered a new one och and also a new cap). I would also like to replace the woofer witch seems to be a retrofit (I will check it out later when I open up the speaker to change the pot and cap). So my question is if för example the Woofer att Simply Speakers (https://www.simplyspeakers.com/advent-acoustic-research-replacement-woofer-1210132.html) will be a good replacement? Alternatives, regardning new units? Or is second hand woofers (from 4, 4x, 6 and ?, ?) the way to go?


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In an recent post regarding the AR-15's woofer, I noted that the Simply Speakers option may be an OK replacement for the original 200001 woofer.  It has a poly-cone and probably has a stiffer suspension, but the specs appear to be similar to those of the 200001. 

If you want to stay with an authentic AR woofer, the following list may be of help (the 200037/210037 & 200050/210050 look to be updated versions of the 200001):   

The 200001 was also used in the AR-4, 4x, 6, 7, 15, 16, 17, 18, 25 and 94 (not 94s).

The 200037/210037 was used in the AR-18b, 18s, 28s & AV-18.  I've seen these show up often on eBay.

The 200050/210050 was used in the AR-28b, 20, 25bxi, 38b & 38bxi.

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On 4/2/2019 at 4:10 PM, AR55 said:

Thanks, the respons curve is very helplful but I was also hoping for T/S paramters to go shopping för woofers here in Sweden (rather expensive to buy them in the US...). But I will check what kind of Woofers are in them now (they sound very good in some ways but are "thin" in the bass department and need a small sub to sound right.



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