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How bright is an ultrasone pro 900? - Page 12

post #166 of 206
Radio_head read the thread There's about a dozen comparisons.
post #167 of 206
Found some more info about S-logic plus. One of their goals was according to this to minimize the problem with our different ear cavitys. "Ultrasone’s Dr. Florian Koenig has done detailed experiments that were conducted to find the headphone architecture (closed, open, centered driver, offset driver, offset geometry) that minimizes perceived frequency response variations between listeners. It seems that, partly due to different ear shapes, different listeners perceive headphone frequency response differently. All other things being equal, a headphone would be better if there were a smaller variance in perceived response across listeners. S-Logic Plus is the latest version of the architecture that Dr. Koenig found minimized perceived response variance."

Whole article hear: Review of the Edition 8 with comparisons to the HD 800.
PLAYBACK 23: Ultrasone Edition 8 Headphones | AVguide
post #168 of 206
it would be really helpful if someone knew the exact screwdriver to use, so that i can goto a hardware store and get the correct one without stripping the screws.

it would also be helpful to know where to get the felt disks online. do thay have to be 3mm thick? if so i can't find any of that thickness online.

also what kind of tape is it?
post #169 of 206
i apologize i didn't read through this whole thread completely.

i still would like to know which screwdriver to purchase to open this up, as well as the thickness of the felt discs that are being used. Also is there a specific kind of tape that I should be using?
post #170 of 206
OK, so I did the mod, ended up taking the felt self adhesive discs off of the outer cup (the ones on the top hole). I took those out because it just sounded weird to my ears, like it was muting something that wasn't supposed to be muted.

So as of right now I have the cotton in the earcups, I barely used any by the way, and a felt pad on the inner most layer off centered, as per kees instructions. This sounds a little bit better to me than stock. The bass is definitely sharper and more tamed and because of this the crisp razor sharp detail is more prominent and appreciable.

I'm enjoying these cans right now.
post #171 of 206
I'm a little bit unhappy with the loss of bass.

It's weird, it's like the bass is clearly better now. It used to be boomy and have some kind of weird resonance. Now that's all gone, and it really opens up the sound.

However, I feel like I need more lower end bass. If I removed the round piece of felt on the inner most layer (underneath the driver) and replaced it with a slightly smaller piece of felt, would that probably increase the bass?
post #172 of 206
Regarding modding with cotton: I've found much better results from Dynamat and EQ, stuffing these cans with cotton removes a lot more than mid-bass.
post #173 of 206
If you have to do these mods to enjoy them you bought the wrong headphones. Pro 900 are basshead cans designed for bass heavy electronic music imo. I love them
post #174 of 206
Quote:
Originally Posted by bastogne View Post
I'm a little bit unhappy with the loss of bass.

It's weird, it's like the bass is clearly better now. It used to be boomy and have some kind of weird resonance. Now that's all gone, and it really opens up the sound.

However, I feel like I need more lower end bass. If I removed the round piece of felt on the inner most layer (underneath the driver) and replaced it with a slightly smaller piece of felt, would that probably increase the bass?
No, the felt does not affect the bass.
If you want more bass you have to use a thinner layer of cottonwool.
post #175 of 206
what is exact diameter of the layer of cotton wool ?
post #176 of 206
Quote:
Originally Posted by xkwh867 View Post
what is exact diameter of the layer of cotton wool ?
It's a de-make-up pad (the two layers pulled apart), diameter is 5.5 cm.
post #177 of 206
I just finished kees mod.....oh~ the hell~~~ oh~ dear kees....what the hell have you invented? I just can`t say how much my pro900s sound impeoved~ It`s soooooo much!!!

I deeply appreciate what you`ve developed for my precious pro900!!
post #178 of 206
Is there anyone who just modded theirs to remove the metallic quality and sibilance of the treble?

If so, how did you do it?
post #179 of 206
Quote:
Originally Posted by eobet View Post
Is there anyone who just modded theirs to remove the metallic quality and sibilance of the treble?

If so, how did you do it?
Just do the two felt pads and leave the cotton wool out.
post #180 of 206
Quote:
Originally Posted by Kees View Post
Just do the two felt pads and leave the cotton wool out.
Thank you!

Will try when I work up the nerve to do it.

EDIT: Btw, I just removed the replaceable pads to see what's behind them, and to my understanding, I should put a felt pad on the inside of the middle hole (that's covered with the white paper already)... but then also on the outside? Where it would only touch the fabric of the replaceable pads? Why is a felt pad needed on the outside? Doesn't that just make it touch my ears?
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