Coaxial MT122 |
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AM55
Old Croc Joined: 16 August 2007 Location: Matlock Status: Offline Points: 1728 |
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Posted: 16 January 2011 at 3:25pm |
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Not sure if this has been covered before but is the any reason why you cant cut down and mt122 (as per pic below) and mount the HF in the top 12" horn. Anything to take into consideration when moutning the HF? Any effect on sound? |
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djeddie
Old Croc Joined: 26 April 2004 Location: Bristol Status: Offline Points: 4125 |
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Try this one, but try a search as I know it's come up a few times over the last few years :-
http://forum.speakerplans.com/horn-loading-a-coax-driver_topic47168.html |
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Chas n Dave : it's like Drum and Bass but with beards. E=mc² ±3dB
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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That is a complete misguide man. Entirely different topic for different thing.
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7810 |
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AMSS, coaxial loading will mess up the mid driver dispersion a bit, but that does not stop D&B to make C4 and C7 tops that do sound fabulous.
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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AM55
Old Croc Joined: 16 August 2007 Location: Matlock Status: Offline Points: 1728 |
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I don't mean using a coaxial speaker like in that thread I mean actually mounting the HF driver and flare in the top horn space, bit like the BFM omnitops.
Edited by amss - 16 January 2011 at 4:30pm |
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Timebomb
Old Croc Joined: 11 October 2004 Location: Lancaster Status: Offline Points: 2716 |
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I tryed it with quite a big horn about 300 x 150 and it didnt really affect the responce untill about 800Hz on axis, nearfield imageing was better, id say its a good idea. Id go for a 60 x 40 horn to roughly match dispertion at 800Hz and cross to a BMS 4550 at 800Hz or a nice 2".
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James Secker facebook.com/soundgearuk
James@soundgear.co.uk www.soundgear.co.uk |
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Timebomb
Old Croc Joined: 11 October 2004 Location: Lancaster Status: Offline Points: 2716 |
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That was in single 12" horns though, but i think it would still work well with a twin 12".
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James Secker facebook.com/soundgearuk
James@soundgear.co.uk www.soundgear.co.uk |
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cravings
Old Croc Joined: 30 January 2007 Location: Ireland Status: Offline Points: 7441 |
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i think.. i've grasped.. that if your (high) horn is small enough to not interfere with the wavelengths of the frequencies of signal the mid horn is producing.. it'll be fine.. like in the Xtro plan, or something..
maybe look stuff like that up.. |
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AM55
Old Croc Joined: 16 August 2007 Location: Matlock Status: Offline Points: 1728 |
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I would go with a 60 x 40 horn not sure about a 1" compression driver though. |
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sonofalesbian
Young Croc Joined: 16 May 2010 Location: Leeds/MCR Status: Offline Points: 1219 |
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xtro is abit different though, because the comp is in the horn path of a 15" driver that doesnt anywhere near touch 800 hz, so not much chance of interfearence there!
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www.brotherhoodsoundsystem.co.uk
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Timebomb
Old Croc Joined: 11 October 2004 Location: Lancaster Status: Offline Points: 2716 |
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What ever horn you use it will cause some interfearence, the HF horn will always be bigger than 1/4 wavelength at the crossover frequency, its not going to be accousticly invisable
The question is how dos it sound in the real world, the only sure way to find out is to try. As long as the horn is well designed to meet 800Hz i think it will work well, as i tryed quite a large horn in the mouth of a MT112 with a BMS 4544 and it worked well. |
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James Secker facebook.com/soundgearuk
James@soundgear.co.uk www.soundgear.co.uk |
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Timebomb
Old Croc Joined: 11 October 2004 Location: Lancaster Status: Offline Points: 2716 |
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Id recomend you give the 4550 a try, ive not got that one but the 4544 sounds great crossed at 1.3KHz and the 4550 recomends crossing even lower. I was a bit skeptical about running a 1" that low but it works |
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James Secker facebook.com/soundgearuk
James@soundgear.co.uk www.soundgear.co.uk |
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