Hey there, sorry... hopefully we don't have to be too politically correct, this is just my opinion, as we all have them, + or - it's all good, the EVO is a great sounding headphone as it is... a filter mod would be crazy... IMA`, on this one. Anywho just the simple fact of taking the 669 pads and foam inserts and putting them on a 681 will make a difference everyone should be able to hear,, (and pad depth foam or shield in front or part of the driver is part of most all good headphone design) as a recording engineer this is just my preference, not to have a headphone, that purposely cuts or boosts frequencies with capacitors on a single driver headphone ...now i am sure the filter mods are great for cutting sibilance and to cater to a certain genre, a lot of metal heads, find there is not many products that make "good" headphones or earbuds for heavy metal, the HD381F ear buds work good for this genre, and the bass boosting cans some of them are a joke. of course just opinions of one hillbilly.
You are right i have not read much about mod filtering on a headphone, (have read the early 681 mod post) or try'd any filter mod s... what is way cool is that someone has taken the time to listen to these headphones, and design a filter mod for different drivers, Kudos... not an easy task. Thanks
What i was really trying to express ...is there is a different way to change the way your headphone sounds, without electronic filtering, and these are things that make or break a headphone design, and of course you have to start with a quality good driver, and Superslutz has a few that are mod worthy, i am no expert, but do have some friends that are... just looking at the Superlux drivers at first glance all the 50MM drivers look the same... but they are not, some are thinner some have two layers or part of the cone duel layered, anywho the rear chamber design is very important as well to a great sound. all i know is we have one original 681 that has no upper ear ripping sibilance at all, and no filter caps or anything like that, the rear chamber is way tricked out, have not opened it up would not do that unless needed repair, it also has thicker pads, Mogami quad wire direct to each driver, no current going thru the headband wire... and it would not surprise me if Rothermel mod'ed the driver as well... at any-rate... this 681 is unbelievable sounding... All that being said, even thou i feel this is the proper way to design a great headphone, i did not want to imply electronic filtering mods was a bad idea, it would just be a bad idea to do on a great sounding headphone. IMA that should be ok to say... now even in the control room, when you have a set of great speakers, but your room is not letting you hear accurately, some engineers compensate with monitoring EQ to hear the true reference so nothing is canceled out, or overcompensated... to achieve a flat true reference. so Sorry did not mean to discredit filtering mods... as they can help you create your personal listening preference... but was trying to say that all the person cans sound different, a good thing, and some work really well the way they are for me for different reasons. TMI Sorry:
Ok here is the joke for the day maybe bring a Christmas smile :
Political Correctness
There's an annual contest at Griffith University in Australia,
for the most appropriate definition of a contemporary term.
This year's term was:'Political Correctness'
The winning student wrote:
"Political correctness is a doctrine, fostered by a delusional, illogical minority,
and rapidly promoted by mainstream media, which holds forth the proposition
that it is entirely possible to pick up a piece of **** by the clean end."
Cheers Doyen