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Strange Volvo wiring
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<blockquote data-quote="moe3152" data-source="post: 8842540" data-attributes="member: 688925"><p>I did test the polarity by connecting to the braided wires coming off the coil and the wires we're connected properly. Which confirms they wired the capacitor and the resistor to the negative wires.</p><p></p><p>I unsoldered the resistor from the woofer and now it tests at 8 ohms instead of 11. At first I thought it might be some weird shaped capacitor for the woofer. But it has continuity, which a good capacitor does not, till a signal is sent.</p><p></p><p>Remember that 25 years ago all the amps we're rated at 8 ohms, along with the speakers. If an 8 ohm tweeter was wired in parallel with an 8 ohm woofer and wired again in parallel with the 8 ohm door speaker, my calculations show an impedance of less than 3. So I see the need for a resistor which would raise the impedance enough for the amp to handle it. And yes, I cannot fade them. I can fade the front door speakers to the rear.</p><p></p><p>I just came from the local Pick n Pull and checked a Volvo that was 2 years newer and no resistors and the capacitor is wired to the positive tweeter terminal. I guess they finally got smart.</p></blockquote><p></p>
[QUOTE="moe3152, post: 8842540, member: 688925"] I did test the polarity by connecting to the braided wires coming off the coil and the wires we're connected properly. Which confirms they wired the capacitor and the resistor to the negative wires. I unsoldered the resistor from the woofer and now it tests at 8 ohms instead of 11. At first I thought it might be some weird shaped capacitor for the woofer. But it has continuity, which a good capacitor does not, till a signal is sent. Remember that 25 years ago all the amps we're rated at 8 ohms, along with the speakers. If an 8 ohm tweeter was wired in parallel with an 8 ohm woofer and wired again in parallel with the 8 ohm door speaker, my calculations show an impedance of less than 3. So I see the need for a resistor which would raise the impedance enough for the amp to handle it. And yes, I cannot fade them. I can fade the front door speakers to the rear. I just came from the local Pick n Pull and checked a Volvo that was 2 years newer and no resistors and the capacitor is wired to the positive tweeter terminal. I guess they finally got smart. [/QUOTE]
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