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| Spica Badge | SC-50 | SC-50 (rear) |
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| SC-30 | SC-30 | SC-30 |
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| TC-60 | TC-60 | TC-60 |
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| Angelus | Angelus | Angelus |
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| Angelus Only Black set known to exist |
Angelus Only Black set known to exist |
Special Angelus Only Black set known to exist |
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| TC-50 | TC-50i | TC-50i |
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| Servo Subwoofer | Servo Sub | Servo Subwoofer (rear) |
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| Crosy Mod Spica | Crosy Mod Subwoofer | Back of Crosby Mod Spicas |
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| TC-50 Tweeter HD 100 D25 |
TC-50i Tweeter DTW 100 TF (note shorter coil) |
Audax(FR) / Polydax US) Specs on the TW025A2 tweeter that Madisound sells as a replacement |
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| TC-50 Woofer HIF 17JS 2 CA12 |
TC-50i Woofer HIF 17JVX 2CA 2 |
TC50i Woofer (late) HIF 17JVX 2CA 2 |
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| TC-50 Crossover | TC-50i Crossover | Audax(FR)/Polydax(US) Specs on the Woofer Chassis |
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| TC-50 Crossover | TC50i Crossover | Versa-Tronics Terminal Cup RP-901 |
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| Angelus Schematic Bau Sketch | Angelus Crossover Layout Sketch | Angelus Layout & Components |
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| Angelus Schematic | Angelus Crossover |