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In the Forum: Audio Discussions
In the Thread: A listening room for a domesticated Cat?
Post Subject: The ScanspeaksPosted by anthony on: 9/20/2017
In my experimenting here, not really listening mind you, it looks like you can get a very nice frequency response to about 150Hz with those Scanspeak woofers. This frequency sits about where your Upperbass is rolling off so there is also the (distant) possibility that a new 10 driver array would be able to go all the way up to that point. Whether that sounds good and is desirable I have no idea, but it is another possibility. Here are my gated measurements of some different cabinet stuffing in my "Cannons"...
No smoothing on graph.
Gold = empty tube, no stuffing
Cyan = low density stuffing close to the rear of the driver
Magenta = high density glass fibre stuffing at far end of tube
Dark Blue = mix of high density glass fibre batts at the far end of the tube and low density behind the driver
The measurements have been aligned at the 20Hz hump at the bottom of my microphone calibration, but you can see how the SPL can be changed with various amounts and types of damping...3dB difference at 150Hz may be something you may be able to work with. The high density glass fibre batts in a longer box such as you are proposing can be used quite effectively to damp the reflected backwave and reduce driver output at all frequencies, especially higher frequencies.
How does it all sound? I cannot tell you because I am not yet finished.Rerurn to Romy the Cat's Site