jasonb
Headphoneus Supremus
- Joined
- Sep 14, 2010
- Posts
- 5,564
- Likes
- 2,861
Did you do a modified bass port on the outside? Or did you leave the outside vents alone?
I okay I finally got T50rp enough to my liking. Bass is good but could be better and could extend lower. Mine can not go lower than 27hz. Feel free to make any suggestion. Here's my tweaked BMFv3 so far:
1. Stiff craft with double sided type over stock white felt and driver
2. Plasticine Flush Mass Loaded in the baffle compartments (I did not weigh it) and also seal around the circumference
3. Silverstone foam both side of cups with rips, felt top and button of vents with black felt.
4. A piece gauge over foam and felt followed by a piece of 7mm Rock Wool with a hole directly where the vents with black felt is followed by 3 thin sheets of rolled rite aid cotton.
5. Scotch taped bass port with a small needle hole on ear side.
6. HM5 with inner tube for pads.
Oops, I meant the baffle port. The little hole of the ear pad side near the top screw. I left the vents alone outside and inside.
On a side note does your modded t50rp increase/enhance echoing effect. I modded a t50rp with 840 pads a few years back and I don't recall hearing echoing effect as pronounce as my current on modded t50rp. This only happens to certain songs with a hint of echoing.
should be less ringing after modding. the internal dampening is supposed to reduce the ringing.
Speakng of felt. What is the stiffened craft felt behind the driver supposed to do exactly. I just grabbed a sheet from Hobby Lobby for 85 cents so ill try it, but was just curious what it is supposed to do.
should be less ringing after modding. the internal dampening is supposed to reduce the ringing.
I agree. After the initial build and successful tuning, there should be no echo unless that's the way the music was recorded. The SQ should be clean and clear with good extension on both ends, textured, non-boomy bass, and treble detail without sibilance.
Next, we will see what the Alpha pads do to them. I'm expecting a huge difference in soundstage and imaging, but I'm not sure what to expect in terms of frequency response.
The bottom of the first post has some frequency response graphs with different pads including the Alpha Pads. Pretty jagged highs.
Those graphs were also taken on a T20rp, not a T50rp. i will find out what they do either tomorrow or monday when they arrive.
Right, but they use the same drivers I think. Otherwise that whole section of the post would be negligible. Do you have a DIY frequency response setup? I really need to make one...
I probably could set one up. I have a Behringer measurement mic that I used to use for tuning my home theater system. I'm not sure if it would work with my current laptop though.
Anyway, people on the Mad Dog thread speak highly of the Alpha pads. Most, if not all, seem to think they are better than the 840 pads.