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<blockquote data-quote="Kristian Kolmkant" data-source="post: 8671623" data-attributes="member: 676785">Hello everyone!&nbsp; &nbsp; I am planning to install german-maestro concept line speakers in my e36 m3 coupe. I have to put a tweeter with 4&quot; speaker into my door, 5.25 speaker in the leg area and 6&quot; or 6x9 (with adapter) behind. I plan to put coaxials behind and composites in front, but i have more questions than answers regarding my project. I will put them below and i hope you could help me.&nbsp; &nbsp; 1. Should i really put all composites in front and a coaxial behind? Other option is to put another coaxial into 4&quot; or 5.25 slot. Composite behind is also an option.&nbsp; &nbsp; 2. Is it better to put 6&quot; speaker behind or 6x9 with adapter? Does the adapter somehow decrease sound quality?&nbsp; &nbsp; 3. What kind of amplifier should i put? I was searching a lot, but cant really decide what is the best option for this set up. A<a href="https://www.audiocity.ee/autode-helitehnika/auto-voimendid/4-kanaliga-voimendid/alpine-mrv-f300.html" target="_blank">LPINE MRV-F300</a> seems to suit my needs.&nbsp; &nbsp; 4. Main idea of my m3 restoration is to keep everything stock looking, therefore i would like to upgrade my head unit with CD43, which is 20 years old. It does not have outputs for a new amplifer, thus is it possible to somehow connect it? Will my sound quality degrade because of it?&nbsp; &nbsp; Thank you!Edit: Added a scheme of speakers&#039; layout (current fit for rear speakers is 6&quot;, 6x9  can be installed with adapter)[ATTACH]4769[/ATTACH]</blockquote>

[QUOTE="Kristian Kolmkant, post: 8671623, member: 676785"] Hello everyone! I am planning to install german-maestro concept line speakers in my e36 m3 coupe. I have to put a tweeter with 4" speaker into my door, 5.25 speaker in the leg area and 6" or 6x9 (with adapter) behind. I plan to put coaxials behind and composites in front, but i have more questions than answers regarding my project. I will put them below and i hope you could help me. 1. Should i really put all composites in front and a coaxial behind? Other option is to put another coaxial into 4" or 5.25 slot. Composite behind is also an option. 2. Is it better to put 6" speaker behind or 6x9 with adapter? Does the adapter somehow decrease sound quality? 3. What kind of amplifier should i put? I was searching a lot, but cant really decide what is the best option for this set up. A[URL="https://www.audiocity.ee/autode-helitehnika/auto-voimendid/4-kanaliga-voimendid/alpine-mrv-f300.html"]LPINE MRV-F300[/URL] seems to suit my needs. 4. Main idea of my m3 restoration is to keep everything stock looking, therefore i would like to upgrade my head unit with CD43, which is 20 years old. It does not have outputs for a new amplifer, thus is it possible to somehow connect it? Will my sound quality degrade because of it? Thank you! Edit: Added a scheme of speakers' layout (current fit for rear speakers is 6", 6x9 can be installed with adapter) [ATTACH]4769._xfImport[/ATTACH] [/QUOTE]

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