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Author Topic: Sennheiser HD558 (modded) Frequency Response and CSD Waterfall Plots  (Read 14952 times)

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Marvey

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Sennheiser HD558 (modded) Frequency Response and CSD Waterfall Plots.

The mods consist of the single foam strip (right behind the driver) removed from inside the housing. I have my doubts the changes are significant (moar bass, etc.) I re-applied the strips and felt the stock sounded slightly more midrangy. That was about it. Maybe I'll measure the stock headphones one day. I'm not really that interested.

These are good headphones though, especially for the price.
« Last Edit: June 21, 2012, 06:36:06 AM by purrin »
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rhythmdevils

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Re: Sennheiser HD558 (modded) Frequency Response and CSD Waterfall Plots
« Reply #1 on: March 04, 2012, 06:20:13 AM »

Im guessing Anax doesn't like these? 
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Anaxilus.

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Re: Sennheiser HD558 (modded) Frequency Response and CSD Waterfall Plots
« Reply #2 on: March 04, 2012, 06:33:59 AM »

Im guessing Anax doesn't like these?


Why?  I wouldn't have kept them.  I'm not done w/ them either.  I need some time alone w/ a Dremel.
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rhythmdevils

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Re: Sennheiser HD558 (modded) Frequency Response and CSD Waterfall Plots
« Reply #3 on: March 04, 2012, 06:37:32 AM »

I remembered you saying you're sensitive to 4-5k and the FR has a little "love bump" at 5k. 
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Anaxilus.

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Re: Sennheiser HD558 (modded) Frequency Response and CSD Waterfall Plots
« Reply #4 on: March 04, 2012, 06:57:42 AM »

Actually it's the 5-6khz for me.  Plus the relative difference before the peak at 4Khz isn't dramatic like say a Pro900 from 4-6khz w/ a 20dB delta.  I think I'm more sensitive to the instantaneous change or peak rather than a mild to moderate ringing w/o the larger delta in the FR.  Plus the love bumps seem to roll rather smoothly compared to other jagged ridges.  Just a guess.


I was actually modding the 558 for gaming originally.  Now I'm thinking if I can make the SA5K work somehow w/ a subwoofer and preferably some boom mic apparatus.  It's just so efficient from a soundcard.  Adding power does little to nothing for the dynamics IME.  It also needs a bit more padding on the headband or adjustment to the suspension since the metal bands still do too much work IMO.
« Last Edit: March 04, 2012, 07:00:00 AM by Analixus »
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Re: Sennheiser HD558 (modded) Frequency Response and CSD Waterfall Plots
« Reply #5 on: March 04, 2012, 07:32:20 AM »

Actually it's the 5-6khz for me.  Plus the relative difference before the peak at 4Khz isn't dramatic like say a Pro900 from 4-6khz w/ a 20dB delta.  I think I'm more sensitive to the instantaneous change or peak rather than a mild to moderate ringing w/o the larger delta in the FR.  Plus the love bumps seem to roll rather smoothly compared to other jagged ridges.  Just a guess.

I was actually modding the 558 for gaming originally.  Now I'm thinking if I can make the SA5K work somehow w/ a subwoofer and preferably some boom mic apparatus.  It's just so efficient from a soundcard.  Adding power does little to nothing for the dynamics IME.  It also needs a bit more padding on the headband or adjustment to the suspension since the metal bands still do too much work IMO.

Anax is OK with 5-6k. He doesn't like 6k to 7k.
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rhythmdevils

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Re: Sennheiser HD558 (modded) Frequency Response and CSD Waterfall Plots
« Reply #6 on: March 04, 2012, 07:36:04 AM »

Can we add "love bump" to a list of technical terms somewhere?
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Re: Sennheiser HD558 (modded) Frequency Response and CSD Waterfall Plots
« Reply #7 on: March 04, 2012, 07:47:22 AM »

Actually it's the 5-6khz for me.  Plus the relative difference before the peak at 4Khz isn't dramatic like say a Pro900 from 4-6khz w/ a 20dB delta.  I think I'm more sensitive to the instantaneous change or peak rather than a mild to moderate ringing w/o the larger delta in the FR.  Plus the love bumps seem to roll rather smoothly compared to other jagged ridges.  Just a guess.

I was actually modding the 558 for gaming originally.  Now I'm thinking if I can make the SA5K work somehow w/ a subwoofer and preferably some boom mic apparatus.  It's just so efficient from a soundcard.  Adding power does little to nothing for the dynamics IME.  It also needs a bit more padding on the headband or adjustment to the suspension since the metal bands still do too much work IMO.

Anax is OK with 5-6k. He doesn't like 6k to 7k.


Well, the Sony EX1000 would beg to differ.  I was the first to call them out on that spike at CES a year ago.


http://www.innerfidelity.com/images/SonyMDREX1000.pdf



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Marvey

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Re: Sennheiser HD558 (modded) Frequency Response and CSD Waterfall Plots
« Reply #8 on: March 04, 2012, 08:00:41 AM »

It's probably the 8k spike. Can't tell since no CSDs with Tyll's graphs though.
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RexAeterna

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Re: Sennheiser HD558 (modded) Frequency Response and CSD Waterfall Plots
« Reply #9 on: March 04, 2012, 07:49:17 PM »

i always liked the sennheiser HD5xx line-up i remember hearing a pair of HD555 when i was a hardcore gamer and use to work at small computer shop as a technician.
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