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Author Topic: Jerg / Modulor Pads for HE500 - Measurement Results  (Read 22738 times)

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jerg

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Re: Jerg / Modulor Pads for HE500 - Measurement Results
« Reply #40 on: November 18, 2013, 01:13:48 AM »

Got some Creatology adhesive-backed stiff felt (quite thick also) over the weekend and redid the baffle diffusion modification more precisely, with all the measurements and stuff.

It's startling how much finesse my HE500s have now. Everything sounds really clean and precise.

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dBel84

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Re: Jerg / Modulor Pads for HE500 - Measurement Results
« Reply #41 on: November 18, 2013, 01:25:33 AM »

I have done something similar to this with the LCD3 - it really works well ..dB
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ThurstonX

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Re: Jerg / Modulor Pads for HE500 - Measurement Results
« Reply #42 on: November 18, 2013, 01:38:54 AM »

Agree that the HE-500 is very clean and precise with the felt mod.  I rolled some RTC E188CC in the Lyr after doing the mod (to be redone with the same Creatology felt) and it's simply beautiful.  Definitely worth the effort.  And those tubes demand the back vent mod be reintroduced as well.
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jerg

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Re: Jerg / Modulor Pads for HE500 - Measurement Results
« Reply #43 on: November 18, 2013, 03:08:51 AM »

I have done something similar to this with the LCD3 - it really works well ..dB


Oh. Cool! Convergent modding, as they say.

Care to elaborate on other tricks you used on your supposedly magical LCD3s? PM me if you want to keep things relatively private  p;).
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Armaegis

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Re: Jerg / Modulor Pads for HE500 - Measurement Results
« Reply #44 on: November 18, 2013, 07:55:18 PM »

I think I might try this on my HE-6 with adhesive-backed acoustic foam.
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AstralStorm

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Re: Jerg / Modulor Pads for HE500 - Measurement Results
« Reply #45 on: November 18, 2013, 09:17:42 PM »

Cups? Where we're going, we don't need cups.
Seriously, just remove that bit of a plastic. It's completely optional and that even might do something to the sound.



I wonder if cotton can be used instead. I don't have correct kind of felt or foam.
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jerg

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Re: Jerg / Modulor Pads for HE500 - Measurement Results
« Reply #46 on: November 18, 2013, 09:32:37 PM »

Cups? Where we're going, we don't need cups.
Seriously, just remove that bit of a plastic. It's completely optional and that even might do something to the sound.



I wonder if cotton can be used instead. I don't have correct kind of felt or foam.

If you have a Michael's or any other arts/crafts store near where you live, you could pick up some Creatology adhesive-backed felt/foam probably. I don't see how cotton can be used without blocking the open parts of the driver slits as well.
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jerg

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Re: Jerg / Modulor Pads for HE500 - Measurement Results
« Reply #47 on: November 19, 2013, 12:14:19 AM »

Completing the symmetry...

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ThurstonX

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Re: Jerg / Modulor Pads for HE500 - Measurement Results
« Reply #48 on: November 19, 2013, 06:37:45 AM »

LOL, jerg, you made my "mistake"  ;-)

I redid the felt mod tonight, and decided I'd redo the outer frame, too.  I used the thinner, more flexible felt for that part.  It was actually easier to work with, esp. peeling off the backing, but the stiff, thicker felt should absorb more back waves.

Do you notice any difference with the outer felt?  I admit I redid it mostly to mask the frame as seen through the grill, but I thought the HE-500 sounded fine with the first version of the mod.  The Creatology felt beats the hell out of double stick tape + regular felt.  When I pulled the cups I found several pieces had become dislodged.  Same under the grills.  Not sure how long they'd been like that.

One question: I notice in your felt mod photo that you had unscrewed the plastic(?) ring around the driver.  Is that a permanent mod for you?  If so, what are the effects?

Cheers.
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jerg

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Re: Jerg / Modulor Pads for HE500 - Measurement Results
« Reply #49 on: November 19, 2013, 07:12:03 AM »

LOL, jerg, you made my "mistake"  ;-)

I redid the felt mod tonight, and decided I'd redo the outer frame, too.  I used the thinner, more flexible felt for that part.  It was actually easier to work with, esp. peeling off the backing, but the stiff, thicker felt should absorb more back waves.

Do you notice any difference with the outer felt?  I admit I redid it mostly to mask the frame as seen through the grill, but I thought the HE-500 sounded fine with the first version of the mod.  The Creatology felt beats the hell out of double stick tape + regular felt.  When I pulled the cups I found several pieces had become dislodged.  Same under the grills.  Not sure how long they'd been like that.

One question: I notice in your felt mod photo that you had unscrewed the plastic(?) ring around the driver.  Is that a permanent mod for you?  If so, what are the effects?

Cheers.

I only unscrewed the driver-securing plastic rings to get better access to the drivers when I applied the felt strips, it's not really necessary.

Actually I opted for the thick felt for the outer faces of the drivers too, just because I had the extra cutout patterns drawn out on them when I planned the inner felt damping.

And no, the felt for the outer faces of the drivers don't really do much, and they shouldn't, since they are damping minimal amounts of sound compared to the driver side facing the cheeks.
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