Originally Posted by hipster2010
Decided to take the J$ pads off of my D5000 and put them on my T50rp
Sounds incredible. Soundstage opened up at the cost of maybe just a little less forward mids. Detail seems to be the same. Bass is very similar, maybe a tad bit lighter. Obviously comfort is much better now. I think these pads have given me the sound that I've been looking for in headphones. The D5000s were really close, but I felt that the bass was a tad bit boomy and felt like it put a bit too much sound pressure on my ears after wearing them for awhile. My T50rps now sound very similar, but with a tighter, less prominent bass, better detail and clarity, and slightly more forward mids. They also have better isolation and less sound leakage. After I add some padding to the headband these will also be as comfortable too!
Hey, Hipster, I meant to ask you about the size of the ear hole on the J$ pads. How big is the opening (width and length, please)?
I was working on an experiment, seeing how a pad with a smaller ear opening (comparable to the original T50RP pads) and a fat, angled cross section would affect the sound. Here's what they look like:
Left is a T50RP OEM pad. Middle is the prototype. Right is an 840 pad.
The sound of the prototypes was similar to what you mentioned: A generally brighter sound with very smooth mids but limited bass. No obvious improvement in soundstage. (Note that I didn't add flaps to the prototypes, I just taped them to the baffles with double-sided tape.)
I tried a range of other pads (also 003/HM5, Hifiman and JVC RX900) to figure out how different hole geometries might impact sound. I think that the smaller hole limits bass, regardless of the total volume of the ear-hole cavity. (In other words, a shallow, wide opening will produce more bass than a deep, narrow opening.) But a smaller hole tends to produce better detail with less "smearing."
Also, when it comes to bass reproduction, a good seal between the pads and the baffle is just as important as a good seal between the pad and the listener's head. Or so I've surmised.