sub amp [message #51011] |
Mon, 23 April 2007 20:55 ![Go to next message Go to next message](/forum/theme/AudioRoundTable/images/down.png) |
tmoore
Messages: 15 Registered: May 2009
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Chancellor |
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Would an inexpensive plate amp such at the Dayton unit from parts express be sufficent to drive the 3 pi subwoofer? Are there other inexpensive options?
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Re: sub amp [message #51022 is a reply to message #51020] |
Tue, 24 April 2007 20:21 ![Go to previous message Go to previous message](/forum/theme/AudioRoundTable/images/up.png) ![Go to next message Go to next message](/forum/theme/AudioRoundTable/images/down.png) |
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Wayne Parham
Messages: 18758 Registered: January 2001
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Illuminati (33rd Degree) |
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You can point them downward but it will change the acoustic/pneumatic loading on the driver slightly, so response will be affected. To know what degree and therefore how far is "best" is entirely empirical and depends on other boundaries too, like whether in an open space or near a corner. Don't take this to be words of discouragement; Far from it, I think it's a good idea. Floor loading is like corner loading. What I am saying is that there are more variables involved than just a set figure. That said, there is one figure I can suggest, and that is don't get further than 1/4λ away from a boundary at the crossover point, which is about 2 feet. If you must be further than that from a nearby boundary, try to keep it further than 1/4λ of the lower cutoff, which is 14 feet. You're usually limited by the ceiling at 8 feet. That makes a notch at 35Hz, which is still pretty good.
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Re: sub amp [message #51028 is a reply to message #51025] |
Sun, 29 April 2007 13:16 ![Go to previous message Go to previous message](/forum/theme/AudioRoundTable/images/up.png) |
tmoore
Messages: 15 Registered: May 2009
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Chancellor |
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I just recieved the non-remote 250 watt plate amp from parts express and it has a three position power switch with on-off and auto positions.
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