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<blockquote data-quote="keep_hope_alive" data-source="post: 8678755" data-attributes="member: 576029"><p>Welcome!</p><p></p><p>1. The head unit will start to distort long before the speakers will. You're limiting overall volume output and clarity by using the head unit. Note that the amplifier chip inside the head unit is the size of a quarter. You can only expect so much. A 4 channel amp for the speakers is preferred, but adds cost and complexity. I always power my speakers from a quality external amplifier. </p><p></p><p>2. Slopes will add if set identically. My recommendation is to use 24dB on the head unit for both speakers and subs. Leave subsonic on at the amp. Set the amp LPF to through.</p><p></p><p>3. 60Hz is pretty low, you may be much happier near 80Hz given the speakers you've chosen. </p><p></p><p>4. The tuning of the box is based on the volume of the box and the area and length of the port. You can use an online speaker box calculator to check once you have the dimensions. It is expected to have the subsonic filter set just lower than the box tuning.</p><p></p><p>5. The process of installing audio is tedious and time consuming. Attention to detail when routing wiring and making connections will help system reliability and longevity. Most issues are wiring-based and not equipment selection. Feel free to ask as many questions as you need. Quote or Mention (or PM) people you want to notify. My build logs can be a long but useful resource in how-to examples.</p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 8678755, member: 576029"] Welcome! 1. The head unit will start to distort long before the speakers will. You're limiting overall volume output and clarity by using the head unit. Note that the amplifier chip inside the head unit is the size of a quarter. You can only expect so much. A 4 channel amp for the speakers is preferred, but adds cost and complexity. I always power my speakers from a quality external amplifier. 2. Slopes will add if set identically. My recommendation is to use 24dB on the head unit for both speakers and subs. Leave subsonic on at the amp. Set the amp LPF to through. 3. 60Hz is pretty low, you may be much happier near 80Hz given the speakers you've chosen. 4. The tuning of the box is based on the volume of the box and the area and length of the port. You can use an online speaker box calculator to check once you have the dimensions. It is expected to have the subsonic filter set just lower than the box tuning. 5. The process of installing audio is tedious and time consuming. Attention to detail when routing wiring and making connections will help system reliability and longevity. Most issues are wiring-based and not equipment selection. Feel free to ask as many questions as you need. Quote or Mention (or PM) people you want to notify. My build logs can be a long but useful resource in how-to examples. [/QUOTE]
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