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Orthodynamic Roundup - Page 1608

post #24106 of 24116
Quote:
Originally Posted by leeperry View Post
 

Very nice thanks! I did find some posts explaining clearly that I cannot go TRS due to the shared groud but that's no issue, my only problem is that the Onkyo uses digital volume control and in case of a power outage for instance this might lead to catastrophic consequences huh........anyway, it would appear that some AVR's use a crappy opamp on their HO and others do it the right way and actually connect the phone to the speakers amp using the right filtering circuit in between so we shall see....only one way to find out, maybe I'll give a shot to the speakers out on the Pioneer with the analog knob for fun but first I'll try a cheapo dynamic :evil: 


Yeah, the dollar store is your friend there. Their headphones make great fuses.

post #24107 of 24116

I think there's still room for improvement, but this is the furthest I've been able to take my RP18.

 

• Micropore grid + masking tape (lifted to show thick strip of micropore tape)

(This damping configuration ALSO sounds good with stock pads, but stock pads are still more bassy/bloated than mine)

 

• leave in the stock yellow damping discs

 

• Earside - Ring of thick felt held down with double sided tape + custom leather pads

 

In the end I took out half the foam from the pads bringing them closer to the ear. 
So now it's a single donut of 1cm memory foam inside the pads.

 

Overall, soundstage and treble is improved, bass is down a few notches and I really like it.

post #24108 of 24116

How long did that take to figure out that Micropore / tape scheme?

Looks like something that came to you in a revelatory dream or something.

Quite complex and impressive.

What did you find the ring of felt to do to the sound?

post #24109 of 24116

So the tape idea started when I saw the stock configuration for the Aiwa HP-500 on wikiphonia.

It simply has a strip of masking tape over the two central vents.

 

I tried that out first, but found the treble incredibly splashy - lots of low-treble emphasis, kinda yucky sounding, timbre was off.

 

After that it was covering up different vents in different amounts with masking tape, which produces some interesting/good results.

Then after thinking about other ortho drivers and their grid pattern of holes, specifically Yamahas which seem to produce ruler-flat bass response,

I decided that a grid system would be worth investigating.

Overall this method of experimentation takes you 90% of the way there, but treble was still missing.

 

Then I slapped on some masking tape back on, one in the same place as the HP-500, and another one going across, and surprisingly the result wasn't splashy at all. 
Much softer and balanced.

 

I didn't want any reflections off the metal baffle, so I tried out thin dense craft foam and that sounded good. Nice and clean sound.

Then I tried the thick felt, and this slows down the bass a touch, which I think sounds more natural... not clinical like some sort of scientific anechoic measuring device.


Edited by GREQ - 7/18/15 at 3:46am
post #24110 of 24116

 

This fully open mid-air mount, of the PMB drivers outside of the baffle, without pads, of course gives the maximum strength/depth of bass response. However, it is not the most comfortable, a careful selection of ear pads is needed to  also land these softly on-ear. This mod mainly affects bass strength and depth.

 

Only recommended if you would like deep thunderous bass.


Edited by DefectiveAudioComponent - 7/24/15 at 5:20am
post #24111 of 24116
Quote:
Originally Posted by DefectiveAudioComponent View Post
 

 

This fully open mid-air mount, of the PMB drivers outside of the baffle, without pads, of course gives the maximum strength/depth of bass response. However, it is not the most comfortable, a careful selection of ear pads is needed to  also land these softly on-ear. This mod mainly affects bass strength and depth.

 

Only recommended if you would like deep thunderous bass.

All it needs now is sponge pads on the sides of the headband like a Koss Portapro to take the pressure off the ears.

post #24112 of 24116
Quote:
Originally Posted by GREQ View Post
 

All it needs now is sponge pads on the sides of the headband like a Koss Portapro to take the pressure off the ears.

 

Except that it looks terrible, that would probably sound the best. For now, I'll use a pair of circum pads, to preserve the good looks (deep pads can contain all that).... it still sounds great. If I could print an entirely new headset, though....


Edited by DefectiveAudioComponent - 7/24/15 at 2:21pm
post #24113 of 24116

If anyone wants to sell/trade a T20v1(don't care if the cable or earpads are worn out), feel free to PM ^^

post #24114 of 24116

So you want T20 with round shells? I have T20v2.

http://wiki.faust3d.com/wiki/index.php?title=Fostex_T20RP_v2

post #24115 of 24116
Quote:
Originally Posted by GREQ View Post
 

All it needs now is sponge pads on the sides of the headband like a Koss Portapro to take the pressure off the ears.

 

I have noticed that a bit of pressure delivers a deeper rumble, it's all a matter of taste though, of how much the head should vibrate with the bass.

post #24116 of 24116
Quote:
Originally Posted by DefectiveAudioComponent View Post

 

I have noticed that a bit of pressure delivers a deeper rumble, it's all a matter of taste though, of how much the head should vibrate with the bass.

This is pretty much consistent with most drivers in my experience. 

One of the few exceptions is the HE-500 which seems to get slightly louder bass with a bit of extra distance. Weird.. but probably just due to larger surface area science and voodoo.

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