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| 2 RCA Matching transformers from Ubanggi cabinet.they used for All RCA Speaker Matchin.Because ALL RCA theatre speaker System.They have 32 ohms woofer 15 ohm horn drivers and 4 ohms horn driver.U needs these to match for the impedence .Play music since 1950. |
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| 可能是『喇叭匹配變壓器』 |
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| 曖昧不明的『初級與次級』 |
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