100V PA horns with bootybass |
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imageoven
Old Croc Joined: 28 March 2007 Location: Scotland Status: Offline Points: 2186 |
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Posted: 27 March 2012 at 2:07pm |
Inspired by Davey T, I'm looking at public address horns as a mid range solution above a bootybass for a 12V system.
A couple of things;
1/ What lower frequency range do I need to reach down to? The Bootybass sim suggests 200Hz-ish but when Davey measured his, he suggested it had a better response above 200 than predicted (although the image of his results is no longer there or not showing up for me). 250 - 300 Hz seems to be the common lower end of PA horn specs on paper, how realistic are these for this application?
2/ As the range of low impedance horns is small compared to 100V line versions, If I use a 100V type what effect on specifications/efficiency can be expected by bypassing the transformer?
3/ Has anyone had any experience with the extended frequency range 'music horns' such as the monacor IT-100TW? if so can you recomend (a cheap) one? What are the HF units like on these?
4/ If I'm not going to get down to meet the bootybass with a PA horn, I'll be looking for a small (light) reflex to fill the gap (quite a narrow band as I'll still probably use PA horns above) any recomendations?
Cheers for any input.
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Keep pushing on, things are gonna get better.
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davey t
Young Croc Joined: 11 March 2004 Location: Bristol UK Status: Offline Points: 1428 |
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double 15 reflex will work well also, both should go up to 300hz just fine... the problem is finding a class D bass amp which will go up above 250hz. Also I put a lot of work into the crossover for the tops to get them to sound good.
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Minirig portable soundsystem movement
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slaz
Old Croc Joined: 27 November 2009 Location: London E2 Status: Offline Points: 2713 |
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Apologies for slight thread hijack ..... AAMOI - how much does a (2 x 15) bootybass box weigh (loaded I mean) ? |
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REMEMBER....POLITICIANS AND DIAPERS SHOULD BE CHANGED OFTEN AND FOR THE SAME REASON
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imageoven
Old Croc Joined: 28 March 2007 Location: Scotland Status: Offline Points: 2186 |
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The bass will be running from a car amp with large leisure battery - I'll have to check with the owner (this is someone else's project I'm helping with) about the upper range of the amp - I hadn't even thought about that. If it is low then a bit of a rethink in the direction of reflex mid's and an extra amp may be in order... I don't think the budget is going to stretch to much in terms of crossover - looking for 2nd hand crossovers and eq bargains at the moment. |
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Keep pushing on, things are gonna get better.
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imageoven
Old Croc Joined: 28 March 2007 Location: Scotland Status: Offline Points: 2186 |
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Anyone have any thoughts on these points? |
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Keep pushing on, things are gonna get better.
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