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    New DIY Mid High (90deg) - AKA PM90

    Getting the portlength right in practise is not that easy because to my knowledge, not one simulation program can design for example a shelved port right. You will end up with a correction that needs to be done in practise, hence the multiple versions. -I would say truck pack dimesions are...
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    New DIY Mid High (90deg) - AKA PM90

    Whats pessimistic about it? KS28 is from what I have read, pretty much the benchmark. Chuffing would also be low compared to other dual 18 competitors. What dual 18 would be your starting point?
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    subwoofer advise

    Also watch out with setting the HPF to high. Some extra excursion below tuning (though not really used for sound reproduction) could be beneficial for cooling the VC some more.
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    New DIY Mid High (90deg) - AKA PM90

    You can design something similar to the KS28, only be ready for extensive testing and probably multiple test cabinets.
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    New DIY Mid High (90deg) - AKA PM90

    At the moment there is no version of the PM60/90 with a passive XO between the LF and MF/HF section. So you have to (at least) bi-amp the cab. 2x12NDL76-16 will give you 8 Ohm nominal when parallel. 1x DCX464-8/16 with a passive XO between the MF and HF will give you either 8 Ohm or 16 Ohm...
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    New B&C dual 15" design

    Looks awesome!
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    New DIY Mid High (90deg) - AKA PM90

    Note that don't necessarely need FIR. You can get decent results with IIR also (that even means you can get it to work with a dcx). Though, FIR filtering will give you that extra which can make a box just that bit better then most others.
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    New DIY Mid High (90deg) - AKA PM90

    All eminence options are definately not optimal. The one thing that could come close to working in the PM60/90 is probably their new N314X HF driver (I'm also curious about that one, but its so damn expensive in the EU). They claim a 800Hz possible crossover like various other offerings that do...
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    RCF L18-P200N replacement

    What's the approximate budget per driver. For a good ferrite model, i would consider the 18TBW100.
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    Want to build this sub and need info

    Think you're talking about the 18TBW100. Its a proven driver in de keystone, and will work fine. 18SW115 will have a nudge over the TBW100, but not that noticable probably.
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    Want to build this sub and need info

    Maybe something like the Paraflex Type-C? Even easier to build then the Keystone, and have read many positive reviews.
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    New DIY Mid High (90deg) - AKA PM90

    You could go for a cheaper HF driver. DE1090Tn and ND950 1.4. Would also do the job, at the cost of some soundquality against the BMS/B&C coax.
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    subwoofer advise

    The 15DS115 would do the job I think. I have tried in in a 6th order BP design. Net volume of the rear chamber was around 80L and first tuning was 37Hz. While 40Hz was the aim (so I have to shorten the port), the 15DS115 was still underdamped at Fb. If interested, I am selling the 15DS115-8's...
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    Bms 4594HE dsp settings

    Besides the used horn, what are you gonna use below it? Just some settings for a 494HE won't get you far if you want to do it right.
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    PM 60 & 90 settings and alternative drivers.

    If I recall correctly, the MB12N405 would work nicely. Main disadvantage would be it immense weight for a neo 12" driver (which defeats the original's purpose of the design). Plans should be available in the main two topics about the PM60/90.
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    B&C ME464

    Regarding the multiple driver arrangement, I am currently busy with a new project that houses 4 hornloaded Oberton 10MB300's. HF driver will be either the DCX464 or the 4594HE on the RCF HF950. Eventual goal is a D&B C7 kind of system with some modern drivers.
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    [FS] Lab Gruppen PLM12K44 (+- 1 year old)

    This one is sold :)
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    [FS] Lab Gruppen PLM12K44 (+- 1 year old)

    Price drop: 4000 euros Also after some drivers (trade possibly): -DCX464 -SAN215.30
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    [FS] 3x Powersoft K3 DSP

    One sold, two left, 1100 euros each. Also after some drivers (trade possibly): -DCX464 -SAN215.30
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    [FS] 3x Powersoft K3 DSP

    Price drop to 1150 euros each.