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Recapping of Ar9


Gualti

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Valkyrie's suggestion of removing the 2500uf capacitor is interesting. After doing some online research and reading many threads and opinions his arguments are starting to make perfect sense to me. If I was to install a on/off switch  right after the 2500uf capacitor as depicted by the red line below, wouldn't this also disable the 10MH double inductor from the circuit. 

sKamPSN.jpg

This way I could listen to material in both configurations and decide for myself if I perceived a difference. 

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Just want to point out Infinity QLS-2 used a similar LC(20 mh and 1100 uf)  network to deal with Waltkin woofer(V.C.2) with only 2 ohms impedance for the purpose of extending low bass.

http://www.infinity-classics.de/technik/manuals/Quantum_2_technical_sheet.pdf

According to the article below, the large capacitor  adds up to 6 db in the low bass area but also acts as a subsonic filter for 20 hz or below. Most powered subwoofers have built in  subsonic filter. Therefore, I would view the original AR9 crossover was a very clever design. 

http://www.lautsprechershop.de/index_hifi_en.htm?http://www.lautsprechershop.de/hifi/aka_tief_c_en.htm

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1 hour ago, larrybody said:

Valkyrie's suggestion of removing the 2500uf capacitor is interesting. After doing some online research and reading many threads and opinions his arguments are starting to make perfect sense to me. If I was to install a on/off switch  right after the 2500uf capacitor as depicted by the red line below, wouldn't this also disable the 10MH double inductor from the circuit. 

Yes about the inductor.  If the goal is to eliminate the 2500uF cap, wire the switch across the leads of the cap.  The switch will either short out the cap (i.e. bypassing it) or do nothing.

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