jet effect setting.

[belennos]

Hi,

Here is my setting for I7 + ER4-P :

80 - 0
385 - 0
780 wide - +1
3K wide - +2
11,7k - +1

and BBE = 1, all = off.

I know that ER4p already have nice high but that way the sound seem more clear to me.


bel.

PS: i'm not a bass addict.

[midnite8791]

thanks for that! it sounds very good on my quarter modded ksc-75's :cool:

[martian_23]

My settings with my modified Etymotic ER-4P:

80 Hz 0
220 Hz 0
780 Hz 0
4.1 kHz 0
13 kHz 0

(I started with -1 at 2.4 kHz since the sound was a bit bright and flat at the start. But after ~15 hours of use it has become warmer and smoother, so the ER-4P needs no equalization anymore.)


Settings with Sennheiser PX 100:

80 Hz -7
220 Hz -4
780 Hz -3
4.1 kHz +2
13 kHz +4 (all «wide»)


All other sound effects off.


(Subject to modification due to possible further break-in effects.)

[belennos]

hi martian,

what do you mean by "modified" ?

bel.

[martian_23]

what do you mean by "modified"?I use yellow hearing-protection plugs, pierced with a pricker. The intention was to avoid the extension of the narrow canal section formed by the driver stem and the foam tip's canal (the one in the triflange tip is even narrower). As a result of the mod, the driver outlets are virtually flush with the foam tips. Which also means that the filters are more exposed. This for they are covered by a very fine nylon fabric (gauze) folded around them before the foam tips are pulled over the stems. (The picture on the bottom shows a pair of very used tips.)

The second mod regards the filters. Instead of trashing used filters, I replaced the clogged filter membrane by compressed lambswool fibres filling the tiny aluminum tubes. Their density desides about the sonic balance (a nice way to fine-tune the frequency response). The improvement compared to the stock filters is that they don't represent an abrupt change of acoustic impedance -- the impedance change is kind of «smeared» in that it is spatially spread. This pays off in a smoother, less resonant treble. After all this mod allows me to renounce the passive EQ circuit recommended by Siegfried Linkwitz; the frequency response is quite even without it.

A simpler mod which provides about half of the improvement is to cut the stock foam tips to about 2/3 of the original length. The critical point of this mod is the exposed filters, though, and there's no way you can fold some protective gauze around them.
.

[belennos]

Thks for your answer.

My only tuning was to cut the biggest part at the base of the triflange, huhu.

Bel.

[martian_23]

I had to swap the pads of my PX 100; the Sennheiser foam pads with a 18-mm hole in the center (with underlaid nylon gauze) have begun to tear. The only foam pads available at the moment were Koss (PortaPro...) pads. -- After the change the sound was slightly worse than before: somewhat harsh and sibillant.

But new EQ settings helped a lot:

80 Hz -7
220 Hz -3
1.1 kHz -1
4.1 kHz +2
13 kHz +4 (all «wide» -- all other sound effects off.)

Now the sound is even better than it was.

Actually I must say, the longer I have the i7, the more I like it.
.

[GSV3MiaC]

Sennheiser Px100 replacement pads are available from

http://www.headphonesdirect.co.uk/shop/enter.html

And probably other places too.

[martian_23]

Thanks, GSV, but I'm not sure that I need them anymore. I'm really happy with the current («Koss») sound. [biggrin]
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