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I am restoring a pair of OA4 MK2 speakers. I found that both crossovers are different. One has an extra 2.2ohm resistance between cap and tweeters. It is marked "2-100-005". The other crossover is marked "3-1087". Both speakers have three tweeters 16ohms each. Which one is correct ???? The serial numbers of the cabinets are 12811 and 18529.
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