1x Beyma 755TI or 2x DE250/BMD450 ? |
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levyte357
The 10,000 Points Club Joined: 10 May 2004 Location: UK, London Status: Offline Points: 11743 |
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Posted: 28 August 2007 at 1:34pm |
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In recent thread about CD's, Rog recommended Beyma 755TI Neo (1.4" I think), above everything else at that price. In the same thread was plenty of stuff about Y-type adaptor and multi drivers per horn, and differing opinions about perf of 2x 1" Units compared to 1x 1.4", 1.5".
Ready to buy so, wondering if anyone has tried 2x BMD450's/DE250's on adaptor to Big 2" horn, and how that would compare to 1x £140 B&C/Beyma 1.4/1.5" jobby..
Objective is "sturdy" Compression driver section (per mid top cab) from 1.6khz to 16khz @ approx 110db sensitivity.
Regards. Edited by levyte357 - 28 August 2007 at 1:42pm |
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uncle-will
Registered User Joined: 10 August 2007 Location: United Kingdom Status: Offline Points: 15 |
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your comparing a ford to a rolls. |
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levyte357
The 10,000 Points Club Joined: 10 May 2004 Location: UK, London Status: Offline Points: 11743 |
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Presuming the 755Ti is the Roller. Graph from pdf suggests it might need -5db eq from 2 - 10khz. Anyone else used this? |
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"Who am I? I'm the guy who does his job.. You must be the other guy".
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Tekasis
Old Croc Joined: 03 July 2006 Status: Offline Points: 6492 |
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So that leaves two - What's the ford ?
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uncle-will
Registered User Joined: 10 August 2007 Location: United Kingdom Status: Offline Points: 15 |
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What your comparing is two totally different drivers, the bmd 450 is a one inch exit one inch diaphram and the beyma is a two inch exit three inch diaphram. When you have such a big diaphram on a compression driver it will always stuggle obtaining the same king of efficientcy at the upper end of the spectrum, hench a shelving filter about 6k is usually applied. With some cunning design you can find a way around it. (ref porn horn)
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levyte357
The 10,000 Points Club Joined: 10 May 2004 Location: UK, London Status: Offline Points: 11743 |
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No. The CP 755TI & CP755/Nd are 1.4" exit. http://profesional.beyma.com/ENGLISH/pdf/descarga.php?pdf=CP-755Ti.pdf Rog mentioned the CP 755/Nd. I am interested in the 755TI. The pdf above graphs the 755TI as usefull upto 18khz. Edited by levyte357 - 29 August 2007 at 8:10pm |
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"Who am I? I'm the guy who does his job.. You must be the other guy".
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