DIY bookshelves with car audio drivers.

[amangujral06]

So a friend of mine came up to me to design and build a portable ported enclosure for his mercury c62 6.5" components lying unused with him. I have been designing custom home and car audio for quite some time now but have always found it hard to use car audio drivers with almost no t/s parameters built for free-air door use to behave well in tiny enclosures. But he insisted and I thought why not share some of my work here with fellow members.
The mercury c62 is not particularly the ideal flat response speaker typically associated for home audio usage. But after a few trails in an oversized 0.6cuft box, stuffing it to vary the internal volume, I finalized the desired enclosure volume for the best possible in-room response. These are to be used with a car audio amplifier being driven with a powerful 12vdc smps at home. The amplifier enclosure is yet to be built. The CNC work and assembly are completed, here are a few pics of what has been built till now. This will be tested in my audio room before it goes off for a high gloss paint finish.

 

[amangujral06]

Demo time to finalize the kinks and smoothen out the freq response before it goes into the paint shop. First draft is reasonably within acceptable limits, the in-room response is pretty flat with some exceptions. More to folow later. The stereo seperation is good and the speakers did manage to disappear reasonably well.

 

[SwaroopKS]

Nice project. I always wondered why car audio drivers are not popularly used for speaker diy.

 

[SRI 420]

Demo time to finalize the kinks and smoothen out the freq response before it goes into the paint shop. First draft is reasonably within acceptable limits, the in-room response is pretty flat with some exceptions. More to folow later. The stereo seperation is good and the speakers did manage to disappear reasonably well.

Wow, loved to see your project. Please do keep updating.

 

[amangujral06]

Nice project. I always wondered why car audio drivers are not popularly used for speaker diy.

hi Swaroop, car audio drivers are particularly hard to model for an enclosure in my personal experience. Some exceptions would be there, but most car drivers I have worked with don't like being played in a box. especially when it comes to bass response. It's hard to get a linear in-room response from the car audio drivers designed for free air door use, also car audio drivers aren't typically built with tight tolerances, thicker cone materials are used for the midbass/midrange, or the silk tweeters. The harsh environment of car easily cracked my seas silk tweeters in past and some vifa tweeters let go of their glue in hot Delhi summers. So the heavy cone materials result in less detailed music. none the less, these speakers were lying unused with my friend and he finally found a use for them, instead of buying a new set for party times. reuse-reduce-recycle

 

[Amateur_Audiophile]

I tried with Hertz speaker which sounded really good in my car but not the same in a wooden box, i dropped the idea.