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Double 10 and Horn
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<blockquote data-quote="Peter Morris" data-source="post: 208201" data-attributes="member: 652"><p>Hi Martin,</p><p></p><p>The first version of the double 10 used a 1.2khz crossover with an EV HP94 horn, an RCF N850 compression driver and 2 x 10" ceramic magnet drivers. At this crossover frequency the two 10" drivers did not play that well together.</p><p></p><p>In the next version used an 18sound NSD1480, neodymium 10" drivers and crossed at 900Hz and used FIR filters. This was an improvement.</p><p><a href="http://www.eighteensound.com/Products/Articles/Detail/catid/4062/eid/3361/nsd1480n" target="_blank">http://www.eighteensound.com/Product.../3361/nsd1480n</a></p><p></p><p>The current version is a big improvement, louder and clear than ever.</p><p></p><p>Also FWIW the BMS4594HE does sound better than the ND950 ... but at the price it should. I will be very interested in how you go with the ND950, as I guess I would try crossing at 700Hz - please let us know how you get on ;-)</p><p></p><p>Just to give you an idea of the pattern control achieved with the double 14" I mentioned, here is a picture on axis, 45 degrees horizontally off axis and 20 degrees vertically off axis - crossover 630Hz.</p><p></p><p><em>Below 200hz the ground and near by building were starting to impact the measurement</em>[ATTACH]208202[/ATTACH]</p></blockquote><p></p>
[QUOTE="Peter Morris, post: 208201, member: 652"] Hi Martin, The first version of the double 10 used a 1.2khz crossover with an EV HP94 horn, an RCF N850 compression driver and 2 x 10" ceramic magnet drivers. At this crossover frequency the two 10" drivers did not play that well together. In the next version used an 18sound NSD1480, neodymium 10" drivers and crossed at 900Hz and used FIR filters. This was an improvement. [URL="http://www.eighteensound.com/Products/Articles/Detail/catid/4062/eid/3361/nsd1480n"]http://www.eighteensound.com/Product.../3361/nsd1480n[/URL] The current version is a big improvement, louder and clear than ever. Also FWIW the BMS4594HE does sound better than the ND950 ... but at the price it should. I will be very interested in how you go with the ND950, as I guess I would try crossing at 700Hz - please let us know how you get on ;-) Just to give you an idea of the pattern control achieved with the double 14" I mentioned, here is a picture on axis, 45 degrees horizontally off axis and 20 degrees vertically off axis - crossover 630Hz. [I]Below 200hz the ground and near by building were starting to impact the measurement[/I][ATTACH=JSON]208202.vB5-nodeid=208202[/ATTACH] [/QUOTE]
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