[PleasantNoise]

Wow, that 30hz square wave was well, awful,  pretty much a spike and then flat, couldn't hold the pressure wave I assume?
That would mean the bass wouldn't really have any presence?

 

[Head Injury]

Quote:

Wow, that 30hz square wave was well, awful,  pretty much a spike and then flat, couldn't hold the pressure wave I assume?That would mean the bass wouldn't really have any presence?

The HD598's 30Hz square wave? That's a pretty standard response for mid-fi open headphones. It's probably because of the sub-bass roll-off. See, square wave response is directly related to frequency response, seen here. K701, DT880, HD600, HD650, even HD800 all do it to a degree. The only headphones that perform really well are the planars and some closed cans. The LCD-2 is best at it, not because its bass is any better necessarily but because it's nearly flat to 5Hz or whatever.
 
The HD598 itself does it considerably better than the HD595.

 

[Zombie_X]

You could pop open the HD598's and put a small piece of foam or tape behind the driver on the grill. This would give the phone a tad more bass and also slightly smooth the sound out.

 

[PurpleAngel]

Maybe a really long burn in time will help with the HD-598.

 

[PleasantNoise]

Quote:

The HD598's 30Hz square wave? That's a pretty standard response for mid-fi open headphones. It's probably because of the sub-bass roll-off. See, square wave response is directly related to frequency response, seen here. K701, DT880, HD600, HD650, even HD800 all do it to a degree. The only headphones that perform really well are the planars and some closed cans. The LCD-2 is best at it, not because its bass is any better necessarily but because it's nearly flat to 5Hz or whatever.
 
The HD598 itself does it considerably better than the HD595.

Some Cans, As you mentioned the Lcd2 can actually produce a square wave that looks like a square wave.
A square wave forces a can to drive at the frequency as fast as possible, then maintain that pressure, then change as fast as possible.
Most cans will manage the speed, but overshoot the target  and then can't maintain the pressure, which would assumidly mean that any large bass thumps wouldn't have the real presence that people like?

 

[swbf2cheater]

I say rip the drivers out completely, stuff it with cotton and a wireless dollar store speaker.