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Low Earth Orbit
DIY Audio
Suggestions for 15" mid bass driver
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<blockquote data-quote="Antti Laine" data-source="post: 214272" data-attributes="member: 13538"><p>Hi</p><p></p><p>By just judging by parameters and somewhat smooth top end response for 2way use, 18sound 15nmb1000 and Beyma 15p80nd would be my go to candidates.</p><p></p><p>I have no actual experience with these models, but I have replaced many old or outdated oem speakers with Beyma and 18sound products with success.</p><p></p><p>Despite the lowish xo of 780Hz, its very beneficial to not have any sharp resonances even 2 octaves above the x/o frequency for good "big HiFi" sound quality. In your case the horn would amplify these nasties and probably beam 'em like *ell. I have tried this myself <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> </p><p></p><p>Additionally there would be possibility of frequency overlapping by high and low shelf filtering near the x/o frequency to aid the polar pattern horizontally, and if the said speaker is coaxial horn, also vertically. This is practically possible only if both drivers have nice response.</p><p></p><p>Do You have any other physical measurements of the horn in front of 15" driver, mainly throat area and mouth area? 500mm deep horn would aid the low end sensitivity roughly to the 1/4 wave resonance point of 170Hz or higher. Does the speaker use bass reflex ports to aid low end sensitivity? I could not find any datasheet nor measurements for any of the D-PAC products....</p><p></p><p>Cheers, Antti</p></blockquote><p></p>
[QUOTE="Antti Laine, post: 214272, member: 13538"] Hi By just judging by parameters and somewhat smooth top end response for 2way use, 18sound 15nmb1000 and Beyma 15p80nd would be my go to candidates. I have no actual experience with these models, but I have replaced many old or outdated oem speakers with Beyma and 18sound products with success. Despite the lowish xo of 780Hz, its very beneficial to not have any sharp resonances even 2 octaves above the x/o frequency for good "big HiFi" sound quality. In your case the horn would amplify these nasties and probably beam 'em like *ell. I have tried this myself ;) Additionally there would be possibility of frequency overlapping by high and low shelf filtering near the x/o frequency to aid the polar pattern horizontally, and if the said speaker is coaxial horn, also vertically. This is practically possible only if both drivers have nice response. Do You have any other physical measurements of the horn in front of 15" driver, mainly throat area and mouth area? 500mm deep horn would aid the low end sensitivity roughly to the 1/4 wave resonance point of 170Hz or higher. Does the speaker use bass reflex ports to aid low end sensitivity? I could not find any datasheet nor measurements for any of the D-PAC products.... Cheers, Antti [/QUOTE]
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Suggestions for 15" mid bass driver
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