IS 400w headroom enough for running bass?? |
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Future-House
Registered User Joined: 30 January 2015 Status: Offline Points: 83 |
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Posted: 08 November 2017 at 8:15pm |
is 400w Headroom ok for running bass?
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Hemisphere
Old Croc Joined: 21 April 2008 Status: Offline Points: 2272 |
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"How long is a piece of string?"
How many cabinets, what kind of cabinets, how big is the crowd and what type of event, what type of program material, indoors or outdoors? Generally speaking though, 400w of bass is suitable for pub gigs, wedding functions etc, and may struggle even for those if using inefficient cabinets outdoors.
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Sirius Sounds
Registered User Joined: 19 March 2017 Status: Offline Points: 54 |
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Headroom is less important for bass compared with the higher frequency bands.
I'm only learning myself but basically power compression is more of a factor and so extra power doesn't yield as much additional SPL as you'd expect. My kicks are only 400 W anyway so 400 W headroom is double RMS, which is what they get. However for my subs, I'm not even hitting the RMS rating.. Going for approach of more drivers instead of putting lots of power into fewer drivers. If you are talking about cheap switch mode digital amps though, you will need to have a closer look at their specified rating as they cannot sustain their rating for long bass notes. |
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Future-House
Registered User Joined: 30 January 2015 Status: Offline Points: 83 |
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iv got 2.2k of amp power want to run 1.8k of bass that leaves 400w headroom is that ok?
Wbin + HD15 Edited by Future-House - 08 November 2017 at 8:50pm |
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Conanski
Old Croc Joined: 26 January 2006 Location: Ottawa, Canada Status: Offline Points: 2515 |
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Elliot Thompson
Old Croc Joined: 02 April 2004 Location: United States Status: Offline Points: 5172 |
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If your speakers are rated 200 watts RMS at an 8 ohm load and the amplifier is 400 watts RMS at an 8 ohm load, yes.
If your speakers are rated 1200 watts RMS at an 8 ohm load and the amplifier is 1600 watts RMS at an 8 ohm load, no, based on not having enough headroom for musical peaks. It is best to have a minimum of +3 dB (two times the power) of the RMS rating of the speaker at the given load. Best Regards, Edited by Elliot Thompson - 09 November 2017 at 11:37am |
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Elliot Thompson
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Future-House
Registered User Joined: 30 January 2015 Status: Offline Points: 83 |
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brilliant thanks for your help
much appreciated
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