which one would you choose in a way too small br box (~80liter/70hz).
3*12” or 2*14” for ~80-600hz range.
12” drivers: 12fh500, 12hp1020 or 12ndl88.
14” drivers: 14na100 , 14ndl88 or 14mc700nd.
3 or 4-way active xover.
Best regards Andreas.
3*12” or 2*14” for ~80-600hz range.
12” drivers: 12fh500, 12hp1020 or 12ndl88.
14” drivers: 14na100 , 14ndl88 or 14mc700nd.
3 or 4-way active xover.
Best regards Andreas.
For that range you should probably use just one driver. You should describe the rest of the system to get helpful thoughts on the options. The system dictates what would suit better.
Indeed, for a "way too small br box" it's kind of hard to offer any concrete advice.
First on my list is physical volume and dimensions (with or without materials, must be specified).
Then comes the price you're willing to pay.
Then we can look at what kind of frequency extension and SPL is possible given the previous constraints, and select the driver most suitable for the job.
If you want a tiny box it's kind of hard to get a lot of deep bass, but if you have the budget...
First on my list is physical volume and dimensions (with or without materials, must be specified).
Then comes the price you're willing to pay.
Then we can look at what kind of frequency extension and SPL is possible given the previous constraints, and select the driver most suitable for the job.
If you want a tiny box it's kind of hard to get a lot of deep bass, but if you have the budget...
There is ~80-600hz range specified in the first post 🙂 Which is so high multiple drivers would make response very narrow on the top of the bandwidth and that is not very useful or good sounding unless it is some ~MTM system perhaps but that is not apparent from the post what the system is.
Any 'way too small box' will, by definition, have way too small ports. Not a happy combination. It will behave more as a closed box with such huge cone area and low volume. Best make it sealed to start with.
Yes and there is no need for porting to "boost" lows if there is another driver below reproducing the lows, sub 80Hz stuff. Unless the op is into the sound system culture. More info on the system needed for useful advice 🙂
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Another thought: are you driving these woofers in series or parallel or amping each driver separately? If driving parallel are these 16R/24R drivers or can the amplifier handle a sub-2R load?
Its a shitty installation for sure .
want try to compromise footprint / output.
its a car door that is molded and reinforced inside for a strong box about 90 liters net with a baffle ~ w74cm * h65cm.
No incar nearfield listening though.
Sealed enclosure should work aswell,did not find any sealed friendly neo drivers though to reach low as possible.
Aware that the small size will hurt lowmid output but will have subs below.
Weight is important so neo drivers is to prefer.
It will be paired with dcx464/hf950.
previous setup consisted of 15fh520 and hf1400 cd. (2*15”/1.4”).
Good down to ~80hz.
2*14”/1.4” config. T
—————————MM
3*12”/1.4” config. TM
—————————-MM.
want try to compromise footprint / output.
its a car door that is molded and reinforced inside for a strong box about 90 liters net with a baffle ~ w74cm * h65cm.
No incar nearfield listening though.
Sealed enclosure should work aswell,did not find any sealed friendly neo drivers though to reach low as possible.
Aware that the small size will hurt lowmid output but will have subs below.
Weight is important so neo drivers is to prefer.
It will be paired with dcx464/hf950.
previous setup consisted of 15fh520 and hf1400 cd. (2*15”/1.4”).
Good down to ~80hz.
2*14”/1.4” config. T
—————————MM
3*12”/1.4” config. TM
—————————-MM.
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Is it a portable PA system that happens to be fixed to a car? What dispersion angle is desired?
What was wrong with the previous setup?
How about the subwoofers? Maybe those can run higher and allow for a 100 Hz crossover?
What was wrong with the previous setup?
How about the subwoofers? Maybe those can run higher and allow for a 100 Hz crossover?
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How much power do you have on tap?
My instinct says 3x 12"s if you're going for outright SPL. 3x Faital 12FH520 will take around 2KW continuous and more for short durations. More voice coils = more heat dissipation etc.
Plus, 12"s are usually shallower than 14"s - have you checked the mounting depth?
Chris
My instinct says 3x 12"s if you're going for outright SPL. 3x Faital 12FH520 will take around 2KW continuous and more for short durations. More voice coils = more heat dissipation etc.
Plus, 12"s are usually shallower than 14"s - have you checked the mounting depth?
Chris
I'm guessing the two 15fh520's you have are a little too big for the new box/baffle?
I think i'd probably go with 2 14"s, unless I found some extra long excursion 12"s.
As i'm sure you've calculated, SD * xmax * # of drivers is close to a wash.
As is power required....
although Moondog's point about paralleling 3 drivers on a single amp channel is a good one. That alone would lead me to 2 14"s unless multi-amped.
I also think 2 14's are probably going to weigh less than 3 12"'s..
My 2c vote 🙂
What do you think competition car audio systems ARE?
There seems to be a lot of proliferation of “PA” type drivers intended for the car audio market, especially out of Brazil, these days. Started with the Selenium brand, now multiple suppliers competing. Some of these drivers are excellent *for* PA uses. I was doing a shootout last year between PRV and Eminence - and the poor Eminences got STOMPED.
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Hmm, [80*600]^0.5 = ~219.1 Hz mean
34400/pi/~219.1 Hz = ~49.98 cm dia.
[49.98^2*pi/4] = ~1961.85 cm^2
So [3] 12" comes closest, though either combo is ideally too small.