Too lazy to post pics here, instead here's the link to my post w/ pics on HFhttp://www.head-fi.org/t/646812/hifiman-he500-he400-jergpad-mod-v2-0-new-revised-feb-28-2013/435#post_9234864
Quote from: planx on March 07, 2013, 07:48:22 AMToo lazy to post pics here, instead here's the link to my post w/ pics on HFhttp://www.head-fi.org/t/646812/hifiman-he500-he400-jergpad-mod-v2-0-new-revised-feb-28-2013/435#post_9234864My main critique would be that while your mid~low bass will be improved, your sub-bass is butchered via your taping scheme on the underside. Ideally you'd want a little bit of vent (in my write-up I only tape-stack vented 1/4 of the underside) to open up the sound and give a little distance to bump up the low bass, and have the rest of the underside surface have complete adhesion bonding with the headphone cup to compensate and linearize the sub-bass response. I know because I tried something similar to what you did, just have tape stacks all around, and bass below 35 Hz becomes non-existent. With the sub-bass mod, it goes down solid until about 20 Hz or so before losing some steam.
Quote from: jerg on March 07, 2013, 07:56:56 AMQuote from: planx on March 07, 2013, 07:48:22 AMToo lazy to post pics here, instead here's the link to my post w/ pics on HFhttp://www.head-fi.org/t/646812/hifiman-he500-he400-jergpad-mod-v2-0-new-revised-feb-28-2013/435#post_9234864My main critique would be that while your mid~low bass will be improved, your sub-bass is butchered via your taping scheme on the underside. Ideally you'd want a little bit of vent (in my write-up I only tape-stack vented 1/4 of the underside) to open up the sound and give a little distance to bump up the low bass, and have the rest of the underside surface have complete adhesion bonding with the headphone cup to compensate and linearize the sub-bass response. I know because I tried something similar to what you did, just have tape stacks all around, and bass below 35 Hz becomes non-existent. With the sub-bass mod, it goes down solid until about 20 Hz or so before losing some steam.Forgot to mention that after posting the pictures, I added more tape sections. Again, more bass. Also, I pressed the tape down a bit more to reduce the amount of venting.
