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Old 20th April 2008, 08:41 PM   #1
JLC7 is offline JLC7  United States
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Default BSC appropriate for this speaker?

Hi, I was wondering if BSC would help this speaker or if I have a different problem.

Both speakers are about 2 feet from the back wall and the room is about 12x15' in size.

Here is the nearfield measurement with port response:

Click the image to open in full size.

Here is the the response of each speaker at 1m away:

Click the image to open in full size.

This is the measured response around the listening position with both speakers playing. There's a peak at 50Hz, which I think is a result of room resonance (correct me if I'm wrong.) Also included is the response of my TimeWindow 3 speakers at the same location (in pink.)

Click the image to open in full size.

If my problem is something else entirely please let me know. Thanks.
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Old 21st April 2008, 06:40 AM   #2
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Is the cabinet 11-12" wide?

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Old 21st April 2008, 08:25 AM   #3
JLC7 is offline JLC7  United States
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BSC = baffle step compensation in case you're not accustomed to just calling it by its acronym.
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Old 21st April 2008, 09:12 AM   #4
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It looks like a Six Flags Roller Coaster.
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Old 21st April 2008, 11:29 AM   #5
sreten is offline sreten  United Kingdom
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Hi, its highly unlikely proper BSC will not help, /sreten.
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Old 21st April 2008, 04:23 PM   #6
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JLC7, what is it you don't like about these speakers?
I'd say frequency response at 1m looks pretty good.
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Old 21st April 2008, 07:49 PM   #7
JLC7 is offline JLC7  United States
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Thanks for the comments guys. The measurements are all in the room these speakers will be in, so the rollercoaster response is probably due to all the reflections from the furniture in the room and walls. I'm sure they would be smoother outside or in an anechoic chamber, but I wanted an idea of how they would actually perform.

The response looks nice until 500Hz, which corresponds to the 9" speaker baffle. After that it goes down hill.

I'm looking at adding BSC because the sound is thin when you listen to them in the room, mainly due to the accentuated midrange and HF response. The near field response looks great otherwise.
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