Name: Peavey Low Rider18"
As measured by WT2
Fs = 37.45 Hz
Qms = 8.614
Vas = 237.8 liters
Cms = 110.6 µm/N
Mms = 163.3 g
Rms = 4.46 kg/s
P-Dia = 15.63 in
Sd = 1237 sq.cm
P-Vd = 1.107 liters
Qes = 0.556
Re = 5.873 ohms
Le = 1.958 mH
Z = 8 ohms
BL = 20.15 Tm
Qts = 0.522
no = 2.167 %
1-W SPL = 95.36 dB
2.83-V SPL = 96.7 dB
As measured by WT2
Fs = 37.45 Hz
Qms = 8.614
Vas = 237.8 liters
Cms = 110.6 µm/N
Mms = 163.3 g
Rms = 4.46 kg/s
P-Dia = 15.63 in
Sd = 1237 sq.cm
P-Vd = 1.107 liters
Qes = 0.556
Re = 5.873 ohms
Le = 1.958 mH
Z = 8 ohms
BL = 20.15 Tm
Qts = 0.522
no = 2.167 %
1-W SPL = 95.36 dB
2.83-V SPL = 96.7 dB
yes ,
I am going to use the fiirst position like the manual says comes on at 250 hz to 35 the drops off,But this cabinet is bigger and from what I read it should be good down to 17,butt it's hard to find any good material that uses those low freqs so a bass guitar is 40 hz,so if it's in the ball park I am good,
I am building a parametric EQ at 200,100 and 70 to try I can always move those around as they overlap, I hope 700 watts gainclone will drive them,snicker.....
Anyone used these ???suggestions I am only using one speaker to start with to see how it does,
Cheers,,,,,,almost BEER time,lol.
I am going to use the fiirst position like the manual says comes on at 250 hz to 35 the drops off,But this cabinet is bigger and from what I read it should be good down to 17,butt it's hard to find any good material that uses those low freqs so a bass guitar is 40 hz,so if it's in the ball park I am good,
I am building a parametric EQ at 200,100 and 70 to try I can always move those around as they overlap, I hope 700 watts gainclone will drive them,snicker.....
Anyone used these ???suggestions I am only using one speaker to start with to see how it does,
Cheers,,,,,,almost BEER time,lol.
hi tinitus,
It said 7th but I am not sure how that works I do read that 4 subs back to back,that amazes me,is a true 7 th Can you educate me on those ?
It said 7th but I am not sure how that works I do read that 4 subs back to back,that amazes me,is a true 7 th Can you educate me on those ?
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The way you are setting it up now is 6th order.
If you put a driver (or two) in both baffles, then it's the so called 7th order bandpass.
You can then either run them with the cones (per pair) moving in the same direction or against eachother, which give total different results.
Even the side where you put the driver makes a difference (underside or upper side of the baffle)
This 7th order is hard to simulate in WinISD and predicts bad results for sound quality but good for home theatre of course.
If you put a driver (or two) in both baffles, then it's the so called 7th order bandpass.
You can then either run them with the cones (per pair) moving in the same direction or against eachother, which give total different results.
Even the side where you put the driver makes a difference (underside or upper side of the baffle)
This 7th order is hard to simulate in WinISD and predicts bad results for sound quality but good for home theatre of course.
configuration
I plan to put the first speaker under where it sits in the pic,that's where they recommend it,and see how it does,if ok then the next speaker goes it the same direction one shelf above and I will wire them so they both move together,then maybe flip the polarities around and see what happens,
With not running them to hard it shouldn't do any harm,,,,,,lol,just got to have some fun,I'm getting excited new toys........
well tomorrow will tell.......
I plan to put the first speaker under where it sits in the pic,that's where they recommend it,and see how it does,if ok then the next speaker goes it the same direction one shelf above and I will wire them so they both move together,then maybe flip the polarities around and see what happens,
With not running them to hard it shouldn't do any harm,,,,,,lol,just got to have some fun,I'm getting excited new toys........
It will only be 7th order if a first order passive filter is added to the mix, e.g. an inductor in series with the drivers. It's not possible to create a odd-order alignment with just a driver and a chambered enclosure.
ehh, isn't it just the low end roll off that is 6th order, and high roll off 'still' being 4th order 😕
A 6th order BP system usually has a 4th order rolloff at the low end and a 2nd order rolloff at the high end, though it is possible to design one that's close to 3rd order on both slopes. Generally speaking, of course.
The measurements will likely not show exact 4th order and 2nd order slopes. The actual slopes achieved are dependent on a number of factors, including the passband gain.
In a massive sealed enclosure and tons of equilization does anyone think two of these will have acceptable output down to 20hz? With all the measured parameters all over the place that seems the safest enclosure type.
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