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NHT1259 response
NHT1259 response
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Old 26th August 2005, 12:02 AM   #1
carlmart is offline carlmart  Brazil
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Default NHT1259 response

Does anyone know where to find an actual measurement of the NHT1259 response curve?

I know I had seen one years ago, but a Google search got me nowhere.


Carlos
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Old 26th August 2005, 12:59 AM   #2
SY is offline SY  United States
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NHT1259 response
http://www.diysubwoofers.org/projects/1259.htm

There's no curve shown, but this guy measured the TS parameters and gives both experimental fc and Qtc for a sealed enclosure- you can derive the curve from these data.

http://philsaudio.com/nht.htm

This guy shows some curves.
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Old 26th August 2005, 01:05 AM   #3
carlmart is offline carlmart  Brazil
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Quote:
Originally posted by SY
http://www.diysubwoofers.org/projects/1259.htm

There's no curve shown, but this guy measured the TS parameters and gives both experimental fc and Qtc for a sealed enclosure- you can derive the curve from these data.

http://philsaudio.com/nht.htm

This guy shows some curves.

I had gone seen that project already. No actual measurement curves. That's what I want to see.

I want to know how up the 1259 can staying flat. No computed, a real curve.

Carlos
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Old 26th August 2005, 01:16 AM   #4
SY is offline SY  United States
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NHT1259 response
The second link has measured curves. The first link has measured fc and Qtc, which completely defines the frequency response at the bass end.

As far as high frequency response, don't. The woofer was designed strictly for under-100Hz use. I've built one system with the 1259, so if you can't find anything, I'll see if I can dig up the measurements.
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Old 26th August 2005, 01:55 AM   #5
carlmart is offline carlmart  Brazil
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Quote:
Originally posted by SY
The second link has measured curves. The first link has measured fc and Qtc, which completely defines the frequency response at the bass end.

As far as high frequency response, don't. The woofer was designed strictly for under-100Hz use. I've built one system with the 1259, so if you can't find anything, I'll see if I can dig up the measurements.

Thanks, Sy. I was curious about that peculiar design for the woofer.


Carlos
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