Using Monacor IMG Stageline SP385-G as subwoofers for movies? - diyAudio
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Old 8th June 2009, 02:10 PM   #1
elindse is offline elindse  Norway
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Default Using Monacor IMG Stageline SP385-G as subwoofers for movies?


Some years back I purchased 2 Monacor IMG Stageline SP385-G for use in a medium concert arena.

Up until now these has not been in use, and I am looking at the possiblity to use them as a additional subwoofer in the load speaker system for movie.

Use: Mostly movies, but also some music.
Size: Not extremely big, and the finisih must be good looking.

1,) Are the woofers suitable for their new task?
2,) Any tricks regarding setup? Standard, push-pull, or even using only one of them?
3,) Volume of the box?
4,) Damping required? Minmal, typical or massive?
5,) Anyone has a wiring diagram for a suitable pass for above questions?

Best regards
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Old 10th June 2009, 09:33 AM   #2
kepa1 is offline kepa1  France
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Location: Paris

This driver is made for amplified instruments (meaning mid-bass range) and will perform well on an open baffle, so I guess it will not produce the bass extension you are after.
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Old 10th June 2009, 12:00 PM   #3
Piek is offline Piek  Europe
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I hope you want to use a dedicated Amplifier for it?

TSP-wise: with a single driver smallest (closed) box will be around 170l(heavily damped with rockwool)-250l for fb around 47Hz. You could half that when doing it isobaric, resulting in just one subwoofer.
Bassreflex will be very large...
Try simulating a Bandpass with WinISD is my suggestion for depth and volume. Ripol is also maybe 'ok' as a filler if other subs are present, but it wont be very loud. I had similar drivers in a Ripol it wasnt sufficient for home cinema.

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