I recently acquired a pair of Alpair 12p's which I had planned to build into Scott's Juliet Double Chamber Reflex design
I have since come by a pair of MAOP 7.2's which I'm currently running in a pair of Woden baby labs Storm Shadow V2
I'm now wondering about combining the 2 into one WAW design and I'm after any advice/ideas for doing so
This could be a one box solution like Scott/Dave's design for for A12pw and A5.2/3. (Don't know if this could be adjusted to suit?)
Or my current idea is to continue with the Juliet build and add a separate sealed box on top for the MAOP - something like the image below - top box would obviously need to be the correct size to suit the MAOP (Which I'd also need some help with along with which type of alignment would be best)
Then there's filtering. Run the 12p open and high pass the MAOP? or cross the two over at a certain frequency like a traditional 2-way
or does the sensitivity difference between these two drivers make this whole idea a non-starter? 91.7db for the 12p, 85.8db for the MAOP 7
Any help / ideas greatly appreciated
I have since come by a pair of MAOP 7.2's which I'm currently running in a pair of Woden baby labs Storm Shadow V2
I'm now wondering about combining the 2 into one WAW design and I'm after any advice/ideas for doing so
This could be a one box solution like Scott/Dave's design for for A12pw and A5.2/3. (Don't know if this could be adjusted to suit?)
Or my current idea is to continue with the Juliet build and add a separate sealed box on top for the MAOP - something like the image below - top box would obviously need to be the correct size to suit the MAOP (Which I'd also need some help with along with which type of alignment would be best)
Then there's filtering. Run the 12p open and high pass the MAOP? or cross the two over at a certain frequency like a traditional 2-way
or does the sensitivity difference between these two drivers make this whole idea a non-starter? 91.7db for the 12p, 85.8db for the MAOP 7
Any help / ideas greatly appreciated
Sorry for the brevity -only been back from cardiology for a day or two.
Remember the relative SPL values aren't quite what they seem because until very recently Markaudio had a habit of using 1m/w efficiency ratings rather than the real-world 1m/2.83v sensitivity figures. So the values aren't actually directly comparable; Alpair 12P is actually about 92.4dB & 87.6dB for MAOP7 using the website figures.
Depending on how you handled the crossover, you'd probably get away with it; the main issue there is that Alpair 12P, being a well-damped driver, isn't much of a woofer. Not in itself a bad [or good -it is what it is] thing but short of adding some extra series R to get the Q up, or using a high output impedance amplifier, LF is modest without the help of a horn -preferably a big one. 😉 So whether you think the combination would be worth it as such depends on what you want to get out of it. To be honest, it's not a combination that would be my first choice, as I'd be more likely to run 12P solo, but that's just me, & YMMV as always: we all want different things.
Remember the relative SPL values aren't quite what they seem because until very recently Markaudio had a habit of using 1m/w efficiency ratings rather than the real-world 1m/2.83v sensitivity figures. So the values aren't actually directly comparable; Alpair 12P is actually about 92.4dB & 87.6dB for MAOP7 using the website figures.
Depending on how you handled the crossover, you'd probably get away with it; the main issue there is that Alpair 12P, being a well-damped driver, isn't much of a woofer. Not in itself a bad [or good -it is what it is] thing but short of adding some extra series R to get the Q up, or using a high output impedance amplifier, LF is modest without the help of a horn -preferably a big one. 😉 So whether you think the combination would be worth it as such depends on what you want to get out of it. To be honest, it's not a combination that would be my first choice, as I'd be more likely to run 12P solo, but that's just me, & YMMV as always: we all want different things.