DIY Multi-X Front Seat Under Space Optimisation!


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Hi,
This DIY was to convert my Multix Front Seat under space to tool box, storage space and speaker box (all-in-one).
My Multix audio system is an average performer so I decided to upgrade it my style.
Things that I did.
1. Assembled a amplifier board using IC 4440 dual channel with Bass/Treble. (Cost Rs.210)
2. Bought tweeter and speaker for the setup. (Cost Rs.400 + Rs.900)
3. Used my 8mm plywood for the work. (Cost Rs.500)
4. Speaker cloth and fevicol. (Rs.300 + Rs.150)
5. Few wires, soldering and other connectors. (Rs.140)
Total Cost - Rs.2600.
Time 3 Days 01-May, 16-May and 26-May. (in-between days were vacation holidays ;-))
Let me know what you think about it.
 

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I absolutely loved the idea of using IC4440 for Automotive applications. Not only its cheap, but its very nice sounding amp for the price, sometimes beating dedicated car HUs.

Very nice diy up there. Keep it up!
 
Thread Starter #4
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I absolutely loved the idea of using IC4440 for Automotive applications. Not only its cheap, but its very nice sounding amp for the price, sometimes beating dedicated car HUs.

Very nice diy up there. Keep it up!
Yes, you are absolutely correct. The bass/treble controls gives enough punch as well. I have planned to go for another set of speakers because the soundboss is not enough to handle the power of the amp.
 
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Great job! Best utilization of space.

Does it damps the sound and make it little unclear. I just had a doubt on it.
 
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Yes, you are absolutely correct. The bass/treble controls gives enough punch as well. I have planned to go for another set of speakers because the soundboss is not enough to handle the power of the amp.
Great job! Best utilization of space.

Does it damps the sound and make it little unclear. I just had a doubt on it.
The current setup has co-ax speakers near the legs. While sound is punchy and neat, the sound stage might be suffering. If you are looking for an upgrade, get Component speakers. Put mid-bass in the same place and place tweeters in dash/A Pillars for proper stereo effect.
 
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Great job! Best utilization of space.

Does it damps the sound and make it little unclear. I just had a doubt on it.
The sound cracks when volume is raised, the reason being I used coaxial speakers. The problem is with the speakers' limitation. Going to change it for a component speaker/woofer.

The current setup has co-ax speakers near the legs. While sound is punchy and neat, the sound stage might be suffering. If you are looking for an upgrade, get Component speakers. Put mid-bass in the same place and place tweeters in dash/A Pillars for proper stereo effect.
You are absolutely correct. This is the reason I am going to change the coaxial. The full setup is somewhat like this. The main HU powers the dashboard speakers which came with the vehicle. I have connected additional tweeters with those speakers and placed it in Pillar A.
The 4440 powers the leg room speakers and high end tweeters placed in Pillar B. The plan was to have a stereophonic effect. One more thing is I use the HU for normal music. And go into "theatre mode" by switching on 4440.
 

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This has to be the sweetest sounding Mutix ever!
BTW, you can have Quadraphonic effect by using stock HU and IC4440 combined. Just needs a signal splitter@!
 
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