Topic: Jerg HE500 pads (Read 14404 times)

AstralStorm · « **Reply #70 on:** April 13, 2013, 11:21:21 AM »

Actually I did both with and without, the treble is indeed lowered, but so is the air. The detailing is not "in-your-face" in either Jergpads with or without dust cover - velour has much more of an effect. The cover makes the small peaks in highs smoother (easier to equalize), but at a cost, probably minor audible amount of distortion.

Now, since I have an equalizer (not like HE-500 are portable) and air is hard to eq properly without ringing or noise, I opted to leave it out.

The velour top increases treble and air noticeably. Using glue instead of tape adds a bit of extra damping - which reduces but speeds up bass and reduces distortion even more. Recommended on the whole, especially if you can equalize it back to perfect.

AstralStorm · « **Reply #71 on:** May 31, 2013, 06:56:58 AM »

I've modded another pair of pads, without the annoying velour this time. Yes, velour doesn't improve the sound and makes them "scruffy".
Decided to keep the foam damper. Still has pad vents, but in large holes, not a pattern. This, along with the foam, keeps the pads stiffer and higher.
Trimmed the mounting tape to not cover the holes in the back of the plastic.
No venting yet, as they're real close to neutral sound. I'll try with smaller amount of venting.

8k "blip", surrounding wiggles and 14k dip are definitely caused by the back metal grille. Removing it removes this issue, but I'll need something quite transparent to dustproof.
Likewise the front dust cover is not transparent, eats 2 dB of mids and highs, starting with 1kHz.

--
Yep, small back bottom vent (2 strips of electric isolation tape per channel, 4 times each) improved this without introducing a 4k peak and a huge 2k dip.

jerg · « **Reply #72 on:** May 31, 2013, 03:45:48 PM »

Quote from: AstralStorm on May 31, 2013, 06:56:58 AM

I've modded another pair of pads, without the annoying velour this time. Yes, velour doesn't improve the sound and makes them "scruffy".
Decided to keep the foam damper. Still has pad vents, but in large holes, not a pattern. This, along with the foam, keeps the pads stiffer and higher.
Trimmed the mounting tape to not cover the holes in the back of the plastic.
No venting yet, as they're real close to neutral sound. I'll try with smaller amount of venting.

8k "blip", surrounding wiggles and 14k dip are definitely caused by the back metal grille. Removing it removes this issue, but I'll need something quite transparent to dustproof.
Likewise the front dust cover is not transparent, eats 2 dB of mids and highs, starting with 1kHz.

--
Yep, small back bottom vent (2 strips of electric isolation tape per channel, 4 times each) improved this without introducing a 4k peak and a huge 2k dip.

I can't quite follow your train of thought / mods without any picture references from you. What do you mean small back bottom vent? Also from your experiences, what is causing the 2k dip / 4k hump?

AstralStorm · « **Reply #73 on:** May 31, 2013, 04:59:57 PM »

It seems that removing the foam circles from the pads causes the 4k peak and 2k dip. Maybe your original pads didn't have that?

The back vents generally lift treble up or reduce bass - full ones as described in the mod, by ~4 dB - 1.5 mm thick - makes them way too bright if the dust cover is removed, but correct with the dust cover. These tiny slit ones lift only by 1.5 dB. The slit is 0.4mm thick and narrower due to the use of only 2 layered pieces of tape per channel.
Removing the dust cover increases treble above 7k like a 2 dB/oct parametric equalizer, except it doesn't boost the 10k part. Vents work slightly lower, above 5k, so the sound is a bit different.
Cutting large holes (or many small ones) in the back of the pads smooths out 6k dip and reduces bass resonance - cupped feeling to the sound - but you already know that.

Removing back grille (and dust cover) removes small wiggles in the 5-9k range as well as the huge 8k dip. Reduces the 14.5k dip as well. Makes the sound yet more open.
Just trying it is trivial - use a flat screwdriver to remove the holding rings, then remove the grille. Easy to replace.

Velour top mod causes a large midrange (500 Hz-1.5k) dip with a minor subbass drop. Also velour is nasty and abrasive. Adhesion mod never worked right for me, unglued after a time - I'll try again with a stronger adhesive.

Now I'm trying to figure out a way to protect the headphone against the dust without damaging the sonic qualities, as well as a way to remove the remaining 14k dip (~3 dB) and the slight 1k-2k dip.

In general, very similar to Jergpad 1+2, with different hole structure (large holes in the middle instead of more slightly smaller ones), smaller slits and no frontal dust cover. Jergpad 1+2 still had some remaining highest end cut. I didn't attach them with tape just yet, only the pads to the mounting rings. I've also attached the pad to the mounting ring with some extra tape at the "large slits" parts without covering any - so that the pad never falls off the ring.

jerg · « **Reply #74 on:** June 03, 2013, 08:30:41 PM »

Quote from: AstralStorm on May 31, 2013, 04:59:57 PM

It seems that removing the foam circles from the pads causes the 4k peak and 2k dip. Maybe your original pads didn't have that?

The back vents generally lift treble up or reduce bass - full ones as described in the mod, by ~4 dB - 1.5 mm thick - makes them way too bright if the dust cover is removed, but correct with the dust cover. These tiny slit ones lift only by 1.5 dB. The slit is 0.4mm thick and narrower due to the use of only 2 layered pieces of tape per channel.
Removing the dust cover increases treble above 7k like a 2 dB/oct parametric equalizer, except it doesn't boost the 10k part. Vents work slightly lower, above 5k, so the sound is a bit different.
Cutting large holes (or many small ones) in the back of the pads smooths out 6k dip and reduces bass resonance - cupped feeling to the sound - but you already know that.

Removing back grille (and dust cover) removes small wiggles in the 5-9k range as well as the huge 8k dip. Reduces the 14.5k dip as well. Makes the sound yet more open.
Just trying it is trivial - use a flat screwdriver to remove the holding rings, then remove the grille. Easy to replace.

Velour top mod causes a large midrange (500 Hz-1.5k) dip with a minor subbass drop. Also velour is nasty and abrasive. Adhesion mod never worked right for me, unglued after a time - I'll try again with a stronger adhesive.

Now I'm trying to figure out a way to protect the headphone against the dust without damaging the sonic qualities, as well as a way to remove the remaining 14k dip (~3 dB) and the slight 1k-2k dip.

In general, very similar to Jergpad 1+2, with different hole structure (large holes in the middle instead of more slightly smaller ones), smaller slits and no frontal dust cover. Jergpad 1+2 still had some remaining highest end cut. I didn't attach them with tape just yet, only the pads to the mounting rings. I've also attached the pad to the mounting ring with some extra tape at the "large slits" parts without covering any - so that the pad never falls off the ring.

I've been tinkering around and it seems to me as though the 2kHz depression is purely due to the closeness of the ears to the drivers. If I tuck anything under the pleather pads (be it the stock foam rings, or just some cotton etc), or even just plush up the pleathers by pinching it around so it thickens up, the 2kHz dip goes away mostly. That coincides too with the velour pad measurements, since velours are significantly thicker than pleathers (sans tucked foam rings).

jerg · « **Reply #75 on:** July 27, 2013, 05:58:08 PM »

My most recent EQ attempt at jergpadded HE500, based purely on my ears and sinewaves.

AstralStorm · « **Reply #76 on:** August 24, 2013, 05:21:45 PM »

Hmm, mine needed more equalization near 1.5k, but generally similar. (My HE-500 had bit more of a dip there to begin with.) They're bit brighter, since I got rid of the detail-sucking grille cloth and the back grille itself, since it's causing an 8k blip. (No, that doesn't cause the 1.5k dip to go deeper.)
The cloth only takes a bit >10k, but it's noticeable and unwelcome.

Your pair seems way more linear somehow. Maybe you've a better one or you're accustomed to the sound, or you have a way different HRTF.
You're doing around 2-3 dB adjustments, I'm using almost full 12 dB. Or maybe your pads are thicker?

The subbass thingy is specific to my ears - I have pronounced bone conduction at this frequency, about 36 Hz.

Full mod without the fuzz on top, w/ the stock foam rings - the fuzz actually kinda breaks the subbass handling and boosts 500 Hz more.
Extra things to make them better attached - instead of rubber glue, uses more duct tape.

DigitalFreak · « **Reply #77 on:** March 25, 2014, 03:38:58 AM »

Anyone here looking to sell me their jerg pads? I just bought an HE-400 and I want to hear for myself what the fuss is about

Author Topic: Jerg HE500 pads (Read 14404 times)

AstralStorm

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jerg

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DigitalFreak

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Author Topic: Jerg HE500 pads (Read 14404 times)