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<blockquote data-quote="keep_hope_alive" data-source="post: 8673887" data-attributes="member: 576029">If you have an off-brand Chinese head unit, then yes, it&#039;s a problem overall.  They seem like a good deal but aren&#039;t made well at all.  Last one I installed spent about 5 minutes in the car before it was taken out and a Kenwood Excelon was ordered.The methods you use to install speakers matters a lot.  Factory speakers have very good seals to door panels, and you have to make those from scratch with aftermarket.  if neglected, sound will suffer.  6-8 hours is a typical minimum effort for a good speaker install (resonance control, sound absorption, seals, and gaskets).  A great install is even longer.  I talk about that with the Everyday Audios crew in the podcast linked in my sig.Note that an OEM system has a lot of time and attention spent (even if mediocre) to the install quality and air-tight seals.Likely your speakers were blown due to lack of proper crossover settings.  Most amps lack high pass filters that go high enough for tweeters and small mids. A proper installer would know this and ensure each speaker has a proper crossover setting. Not sure how he wired all of those speakers to a 4 channel amp with the necessary crossover settings.</blockquote>

[QUOTE="keep_hope_alive, post: 8673887, member: 576029"] If you have an off-brand Chinese head unit, then yes, it's a problem overall. They seem like a good deal but aren't made well at all. Last one I installed spent about 5 minutes in the car before it was taken out and a Kenwood Excelon was ordered. The methods you use to install speakers matters a lot. Factory speakers have very good seals to door panels, and you have to make those from scratch with aftermarket. if neglected, sound will suffer. 6-8 hours is a typical minimum effort for a good speaker install (resonance control, sound absorption, seals, and gaskets). A great install is even longer. I talk about that with the Everyday Audios crew in the podcast linked in my sig. Note that an OEM system has a lot of time and attention spent (even if mediocre) to the install quality and air-tight seals. Likely your speakers were blown due to lack of proper crossover settings. Most amps lack high pass filters that go high enough for tweeters and small mids. A proper installer would know this and ensure each speaker has a proper crossover setting. Not sure how he wired all of those speakers to a 4 channel amp with the necessary crossover settings. [/QUOTE]

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