Guess the retail price of this pair of speaker?

ttan98 · 30th April 2007, 09:15 AM

2 pieces of Data are given.

Look at the frequency and phase responses of this speakers?

The 1st photo is
Response curve is an average of five measurements:
on-axis, 15 degrees left and right off-axis,
15 degrees up and down off-axis

The 2nd photo is
Vertical axis: phase
Horizontal axis: frequency

Guess how much this speaker's retail price?

ttan98 · 30th April 2007, 09:17 AM

the freq response curve below.

cotdt · 30th April 2007, 09:19 AM

it has the classic BBC dip centered around 3kHz and a midbass hump. should sound quite good subjectively. i like this response curve.

andrew01 · 30th April 2007, 10:52 AM

$2998 inc GST ???

rabbitz · 30th April 2007, 12:47 PM

Looks like a 3-way with nicely chosen xo points...... er, A$3999 incl GST.

Lindell · 30th April 2007, 01:39 PM

99 bux?

Frank Berry · 30th April 2007, 01:53 PM

Awful phase response.

phase_accurate · 30th April 2007, 02:07 PM

This "BBC dip" could also be some unintentional response error caused by the mid-high x-over. The hump in the bass response could be from a Wilson or Sonus Faber. I guess the measurements are from an expensive speaker unfortunately.

Edit: The phase-response is either quite good or measured wrong. If it is measured correctly then this is a "real" broadband driver (going quite low however) or some transient-improved crossover design (low order x-over, subtractive etc). This would also explain the mid-high dip.

Regards

Charles

wigginjs · 30th April 2007, 03:20 PM

I'm guessing the xover points are ~150Hz and ~3500Hz? I'm having trouble interpreting the phase response. The 3500Hz dip seems to be indicative of the mid/tweeter being out of phase at the crossover point? Otherwise the phase response graph by seems pretty good ( fairly flat?). I'd be curious to hear others opinions.

sreten · 30th April 2007, 04:23 PM

Hi, $20K,

/sreten.

30th April 2007, 01:53 PM	#7
Frank Berry diyAudio Member Join Date: Sep 2003 Location: Midland, Michigan	Awful phase response. __________________ Frank

30th April 2007, 03:20 PM	#9
wigginjs diyAudio Member Join Date: Dec 2003 Location: Columbia, SC	I'm guessing the xover points are ~150Hz and ~3500Hz? I'm having trouble interpreting the phase response. The 3500Hz dip seems to be indicative of the mid/tweeter being out of phase at the crossover point? Otherwise the phase response graph by seems pretty good ( fairly flat?). I'd be curious to hear others opinions. __________________ The Four Chairs DIY Home Theater

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30th April 2007, 09:19 AM	#3
cotdt diyAudio Member Join Date: Oct 2005	it has the classic BBC dip centered around 3kHz and a midbass hump. should sound quite good subjectively. i like this response curve.

30th April 2007, 10:52 AM	#4
andrew01 diyAudio Member Join Date: May 2003 Location: Adelaide Southern Suburbs	$2998 inc GST ???

30th April 2007, 12:47 PM	#5
rabbitz diyAudio Member Join Date: Jul 2003 Location: Newcastle, Australia	Looks like a 3-way with nicely chosen xo points...... er, A$3999 incl GST.

30th April 2007, 01:39 PM	#6
Lindell diyAudio Member Join Date: Dec 2005 Location: Planet Earth	99 bux?

30th April 2007, 02:07 PM	#8
phase_accurate diyAudio Member Join Date: May 2002 Location: Switzerland	This "BBC dip" could also be some unintentional response error caused by the mid-high x-over. The hump in the bass response could be from a Wilson or Sonus Faber. I guess the measurements are from an expensive speaker unfortunately. Edit: The phase-response is either quite good or measured wrong. If it is measured correctly then this is a "real" broadband driver (going quite low however) or some transient-improved crossover design (low order x-over, subtractive etc). This would also explain the mid-high dip. Regards Charles

30th April 2007, 04:23 PM	#10
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Hi, $20K, /sreten.

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