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Coaxial Wedge Collaboration
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<blockquote data-quote="Ron Kreiger" data-source="post: 19546" data-attributes="member: 68"><p>Re: Coaxial Wedge Collaboration</p><p></p><p>The Beyma will also work in the same box as a cheaper alternative with a little difference in the overall freq. response and it's only a 250watt driver.</p><p></p><p>Again you must change the port lengths.</p><p></p><p>It also yields a +2.7db hump in response @ 150Hz. and this is the result of getting a lower freq response from the cab and adjusting the HPF to suit.The Ciare has a 2.5db at 96Hz. and the B & C a 1.6 @ 111Hz.The Ciare and B & C yield better frequency response down low as far as the low frequency shaping but the Beyma is still quite usable.</p><p></p><p>It weighs in at 11.5 lbs.</p><p></p><p>Here's what it will do. </p><p></p><p>F3 of 77.5Hz. / -10db @ 59.3Hz.</p><p></p><p>Maintains it full 250 watts electrical capabilities down to 62Hz.</p><p></p><p>At rated power it will not hit x-max in it's usable passband.</p><p></p><p>Vent air velocity is relatively low at full tilt.</p><p></p><p>Phase response and Group delay are a bit different then the B & C or the Ciare.</p><p></p><p>In the HF section it needs to cross about 2.2K which is a bit high for a 12" if you're looking for good pattern control.It yields an 1-3/4" VC which tells me it's most likely an 1" or maybe even less exit driver. I doubt 1k cross is possible with this driver.</p><p></p><p>My best guess is HF response is a bit of a compromise but again this is a cheaper driver so depending on your needs it will work well.</p><p></p><p>It's a compromise in Low end response and HF output and most likely directionality as well.</p><p></p><p>Regarding the P-Audio or Eminence drivers.They dont model well unless you are willing to accept a very high F3 and diminished power handling. I would not consider them unless someone can show me good cause to do so.</p><p></p><p>The RCF at it's price point simply doesn't offer any more positives then either the B & C or Ciare.I'm sure it's a decent unit but the other two are hard to turn away from.</p><p></p><p>I know earlier in the thread J Bell came up with a horn load as well. Compared to the reflex solutions the horn will give you a bit more output in the passband but also in a fairly bigger box.</p><p></p><p>I modeled the Ciare in the same Horn Box as J-Bell choose, changing the TS parameters, rear chamber volume and the porting and I can get a similar response as in Designer with the reflex design.The difference of course would be the box size.1.52cu. ft. vs 2.1cu. ft. or so. Now that only includes the actual horn volume not including adding outer side walls to mount the horn into.</p><p></p><p>If James wants to model either the Ciare or the B & C I'd be curious to see the results in horn loads actually tailored to those drivers since we already know in reflex they behave pretty well down low..</p></blockquote><p></p>
[QUOTE="Ron Kreiger, post: 19546, member: 68"] Re: Coaxial Wedge Collaboration The Beyma will also work in the same box as a cheaper alternative with a little difference in the overall freq. response and it's only a 250watt driver. Again you must change the port lengths. It also yields a +2.7db hump in response @ 150Hz. and this is the result of getting a lower freq response from the cab and adjusting the HPF to suit.The Ciare has a 2.5db at 96Hz. and the B & C a 1.6 @ 111Hz.The Ciare and B & C yield better frequency response down low as far as the low frequency shaping but the Beyma is still quite usable. It weighs in at 11.5 lbs. Here's what it will do. F3 of 77.5Hz. / -10db @ 59.3Hz. Maintains it full 250 watts electrical capabilities down to 62Hz. At rated power it will not hit x-max in it's usable passband. Vent air velocity is relatively low at full tilt. Phase response and Group delay are a bit different then the B & C or the Ciare. In the HF section it needs to cross about 2.2K which is a bit high for a 12" if you're looking for good pattern control.It yields an 1-3/4" VC which tells me it's most likely an 1" or maybe even less exit driver. I doubt 1k cross is possible with this driver. My best guess is HF response is a bit of a compromise but again this is a cheaper driver so depending on your needs it will work well. It's a compromise in Low end response and HF output and most likely directionality as well. Regarding the P-Audio or Eminence drivers.They dont model well unless you are willing to accept a very high F3 and diminished power handling. I would not consider them unless someone can show me good cause to do so. The RCF at it's price point simply doesn't offer any more positives then either the B & C or Ciare.I'm sure it's a decent unit but the other two are hard to turn away from. I know earlier in the thread J Bell came up with a horn load as well. Compared to the reflex solutions the horn will give you a bit more output in the passband but also in a fairly bigger box. I modeled the Ciare in the same Horn Box as J-Bell choose, changing the TS parameters, rear chamber volume and the porting and I can get a similar response as in Designer with the reflex design.The difference of course would be the box size.1.52cu. ft. vs 2.1cu. ft. or so. Now that only includes the actual horn volume not including adding outer side walls to mount the horn into. If James wants to model either the Ciare or the B & C I'd be curious to see the results in horn loads actually tailored to those drivers since we already know in reflex they behave pretty well down low.. [/QUOTE]
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