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Low Earth Orbit
DIY Audio
New DIY Mid High (90deg) - AKA PM90
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<blockquote data-quote="Peter Morris" data-source="post: 133919" data-attributes="member: 652"><p>Re: New DIY Mid High</p><p></p><p></p><p></p><p></p><p>The 4594HE is a little more expensive but nowhere near as expensive as the Beryllium version of the 4015.</p><p></p><p>The problem with the NSD4015N is finding a suitable horn. It has a 1.5” exit and there are very few horns available with this throat size. </p><p></p><p>For this project the horn needs to have a cut off frequency down around 400Hz and not be too big to fit in the box, however I think the NSD4015N would be an excellent option and have the output needed. </p><p> </p><p>I have directly compared the 4594 to the smaller 3” diaphragm version of the NSD4015N, the NSD1480N and preferred the 4594. If the NSD4015N sounds like its little brother I don’t think the VHF would sound as sweet as the BMS driver.</p><p></p><p>The other driver that looks interesting is RCFs new ND950; they are more like €330, and have a 1.4” throat. I believe RCF uses these in these the new TT5a’s in combination with HF950 horn which I have used.</p><p> </p><p>I have some of the new TT2a’s which uses the same horn but the smaller ND850 compression driver. The TT2a is a fantastic little box, very natural voicing, but it sounds now where near as nice as this DIY. It’s also the same weight and has much less output, but it is a full range powered box.</p><p></p><p> Its difficult for me being located in Australia, I have to import all the components - BMS from the USA, horns from France and the 12s from England. If you are after any BMS drivers I would check out Assistance Audio, Jack has been fantastic to deal with.</p></blockquote><p></p>
[QUOTE="Peter Morris, post: 133919, member: 652"] Re: New DIY Mid High The 4594HE is a little more expensive but nowhere near as expensive as the Beryllium version of the 4015. The problem with the NSD4015N is finding a suitable horn. It has a 1.5” exit and there are very few horns available with this throat size. For this project the horn needs to have a cut off frequency down around 400Hz and not be too big to fit in the box, however I think the NSD4015N would be an excellent option and have the output needed. I have directly compared the 4594 to the smaller 3” diaphragm version of the NSD4015N, the NSD1480N and preferred the 4594. If the NSD4015N sounds like its little brother I don’t think the VHF would sound as sweet as the BMS driver. The other driver that looks interesting is RCFs new ND950; they are more like €330, and have a 1.4” throat. I believe RCF uses these in these the new TT5a’s in combination with HF950 horn which I have used. I have some of the new TT2a’s which uses the same horn but the smaller ND850 compression driver. The TT2a is a fantastic little box, very natural voicing, but it sounds now where near as nice as this DIY. It’s also the same weight and has much less output, but it is a full range powered box. Its difficult for me being located in Australia, I have to import all the components - BMS from the USA, horns from France and the 12s from England. If you are after any BMS drivers I would check out Assistance Audio, Jack has been fantastic to deal with. [/QUOTE]
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New DIY Mid High (90deg) - AKA PM90
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