The Mr16p has only 3mm of xmax. This will limit lows and output, you need to figure out what is the acceptable output (dB) you want. A simple simulation with unibox shows that a 20L box tuned to 35Hz yields a nice bass output with a -6dB point at around 35Hz, but unfortunately the driver will exceed xmax in the 50-60Hz region starting with only 5W.
Ralf
Ralf
It isn't that simple, as it depends on the box/tuning. Unibox is your friend for this kind of simulations.
If you are using 2 drivers (same tuning but with a 2x20L box), things are going slightly better as you can double the power up to 10W. Voltage needed for this power depends on the wiring (series or parallel).
Note that the bass FR depends entirely on the box and some of the TS parameters (Qts, Vas, Fs). So using one or more identical drivers yields the same result provided you adapt the box volume accordingly. For example if you connect 2 identical drivers together (series or parallel doesn't matter), Qts and Fs of the resulting driver stay the same, and Vas double.
I understand you already have the drivers, but using them as a mid-bass is a compromised design.
Ralf
If you are using 2 drivers (same tuning but with a 2x20L box), things are going slightly better as you can double the power up to 10W. Voltage needed for this power depends on the wiring (series or parallel).
Note that the bass FR depends entirely on the box and some of the TS parameters (Qts, Vas, Fs). So using one or more identical drivers yields the same result provided you adapt the box volume accordingly. For example if you connect 2 identical drivers together (series or parallel doesn't matter), Qts and Fs of the resulting driver stay the same, and Vas double.
I understand you already have the drivers, but using them as a mid-bass is a compromised design.
Ralf
+1 to what giralfino said. SBA optimized the MR16P to be an excellent midrange driver as long as it does not have to deal with the lower bass frequencies. It just does not have the excursion capability for that.
Add a sub, or better yet a pair of subs. If crossed at ~150 Hz or above, 2nd order or steeper, the MR16P should be an outstanding driver
Add a sub, or better yet a pair of subs. If crossed at ~150 Hz or above, 2nd order or steeper, the MR16P should be an outstanding driver
less than 100 euros, at least in Europe !
Well , the IM (intermodulation distortion) is when the bass frequencies are strong enough to move the cone to excess and all the higher frequencies are "modulated" by this excessive movement. In other words, it needs to be crossed higher and/or have a steeper HP X/O slope. The MR has a shorter VC on purpose so it can respond more faithfully to the mid range band. By doing so; it can't take the power of the MW mid-woofer version; the x-max is also less for the same reasons.
I think it is one of the better sounding large cone mids available though; it just needs to be used only in the band/range it was designed for.
I think it is one of the better sounding large cone mids available though; it just needs to be used only in the band/range it was designed for.
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