Need help with full range FLAT response.

[Regal1975]

I have a set of sony mdr7506's with beyer pads driven by a CMOY headphone amp. I also have a killer car audio setup which was previously set up with relatively flat response as measured by a calibrated LinearX setup. I have loaned the linearX out and as such cannot set my car stereo flat, but have always heard that the 7506 was almost flat in response.


So... Does anyone have a full range freq response graph of the 7506's with or without the beyer pads that I can use to compare the car setup to? I dont necessarily listen to the car setup flat, but like to have it available at times.

Thanks!

 

[b0dhi]

Not even close.

 

[Peter Pinna]

Quote:

Originally Posted by Regal1975 /img/forum/go_quote.gif I have a set of sony mdr7506's with beyer pads driven by a CMOY headphone amp. I also have a killer car audio setup which was previously set up with relatively flat response as measured by a calibrated LinearX setup. I have loaned the linearX out and as such cannot set my car stereo flat, but have always heard that the 7506 was almost flat in response. So... Does anyone have a full range freq response graph of the 7506's with or without the beyer pads that I can use to compare the car setup to? I dont necessarily listen to the car setup flat, but like to have it available at times. Thanks!

In order for your car speakers to produce a "flat" response, the cabin of your car would need to be an acoustically correct environment to "support" that neutral EQ setting. While the cabin of your car may have a "tight" / "dead" sound, it is highly doubtful that the listening environment is tuned perfectly enough to support an absolutely "flat" audio.

 

[b0dhi]

I'm pretty sure what he's talking about is using a corrective EQ to get a flat response, which is fairly easy. Ofcourse, that doesn't mean good sound, but it will be flat.

 

[Regal1975]

yes, Flat typically sounds pretty... flat.. as in bad... yes this was using a 1/3octave rta combined with an eq to set everything flat specifically from the listening position. not great sounding, and usually used specifically to educate people on what flat response actually sounds like.


Thanks much for the graph!

 

[FallenAngel]

Uhm... and I would have thought flat means exactly same as real life.

 

[catscratch]

Keep in mind that what sounds flat in a headphone will not measure flat. You can't compare headphone FR to speaker FR.

 

[Regal1975]

Quote:

Originally Posted by FallenAngel /img/forum/go_quote.gif Uhm... and I would have thought flat means exactly same as real life.

which was why in invested the rather ridiculous amount of money needed to have a stereo capable of full range flat response at concert volumes and a measurement system accurate enough to measure it..

But I did realize years ago that this doesn't work out very well.. Not 100% certain why though...Ive pieced together some theories about the range and variances of human hearing from person to person as well as response off axis and room/cabin response...so many variables involved that as far as I can tell, there is no way to accurately reproduce live music 100%.. actual live music will always sound a little better...there is no perfect copy..