hi
i am going to build 4x jbell ss15 tapped horn subs with the box 15lb075 drivers
but i need some tops too
i want as efficient and loud drivers as possible while keeping it in the affordable range. sound quality is not my priority even though it would be nice too
i already got some stuff laying around:
2x spaudio tw-35s tweeters: https://www.spaudio.it/products/sptw-35s-150-watt-rms
1x Monacor SPA-112 PA: https://en.toutlehautparleur.com/speaker-monacor-spa-112pa-8-ohm-12-28-inch.html
1x Monacor SP-12A/302PA: https://en.toutlehautparleur.com/speaker-monacor-sp-12a-302pa-8-ohm-12-32-inch.html
this is what i got laying around.
should i build something with this or get something else?
is there some horn box that i can build for midrange speakers?
i am going to build 4x jbell ss15 tapped horn subs with the box 15lb075 drivers
but i need some tops too
i want as efficient and loud drivers as possible while keeping it in the affordable range. sound quality is not my priority even though it would be nice too
i already got some stuff laying around:
2x spaudio tw-35s tweeters: https://www.spaudio.it/products/sptw-35s-150-watt-rms
1x Monacor SPA-112 PA: https://en.toutlehautparleur.com/speaker-monacor-spa-112pa-8-ohm-12-28-inch.html
1x Monacor SP-12A/302PA: https://en.toutlehautparleur.com/speaker-monacor-sp-12a-302pa-8-ohm-12-32-inch.html
this is what i got laying around.
should i build something with this or get something else?
is there some horn box that i can build for midrange speakers?
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Don’t know the tweeters but both the bass drivers are good. Have they been used? as you have one of each you would need another of whichever you choose. Or perhaps both and build two pairs. A 60x40x30 cm cabinet should work fine.
https://celestion.com/blog/build-this-compact-12-two-way-pa-cabinet-design/
https://celestion.com/blog/build-this-compact-12-two-way-pa-cabinet-design/
Efficient and loud are not the same, you can have one without the other, or both. Efficiency is the one that goes with small amplifiers.
To bad the woofers aren't the same. The TW35 is a super tweeter.. should really be crossed over at 5khz or higher, but the combo may be OK in a relatively low powered setup like this with the 12's running fullrange(100-150hz and up) and the tweeters just adding some sparkle on top. It's far from an ideal setup but it'll make some noise.
If I understand you correctly you plan to buy another one of each of the bass drivers you have so you have two pairs of different types put in a pair of 2x12 cab? It could work if each driver is isolated in the box. But still it depends on the performance of the tweeter. If that one only works to 5kHz you would have an octave or almost two not covered properly. You could also build 4 boxes and just leave out tweeters in two of them. Allowing some flexibility. And perhaps space in the baffle for a bigger horn later.
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yes, that would be two pairs of 2*12"
the other thing is, i cannot get another Monacor SPA-112PA since they are not being made anymore. so, i would end up with 3 Monacor SP-12A/302PA and a single SPA-112PA.
now, i can replace the single SPA-112PA as well, but then we are looking at 500 euros only in midrange drivers, and at that point, maybe it would be better to sell what i already got and get something else?
i dont' really care about sound quality that much, i just want it loud and cheap. it's just going to be used for studentflak
another idea that came to mind is getting like 32 of these at 10 euros a piece when buying in bulk: https://www.brl.se/sv/artiklar/madpm164.html
my subs will be having a frequeny curve similar to this:
i will not run it on low power, i will max them out
the other thing is, i cannot get another Monacor SPA-112PA since they are not being made anymore. so, i would end up with 3 Monacor SP-12A/302PA and a single SPA-112PA.
now, i can replace the single SPA-112PA as well, but then we are looking at 500 euros only in midrange drivers, and at that point, maybe it would be better to sell what i already got and get something else?
i dont' really care about sound quality that much, i just want it loud and cheap. it's just going to be used for studentflak
another idea that came to mind is getting like 32 of these at 10 euros a piece when buying in bulk: https://www.brl.se/sv/artiklar/madpm164.html
my subs will be having a frequeny curve similar to this:
i will not run it on low power, i will max them out
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okay, new plan:
what if i build 4 of these: https://www.lautsprecherforum.eu/viewtopic.php?t=5463
they are cheap, not as efficient as i would be hoping though
what if i build 4 of these: https://www.lautsprecherforum.eu/viewtopic.php?t=5463
they are cheap, not as efficient as i would be hoping though
Yes 1 tweeter is usually plenty for a pair of woofers, in fact it usually still has to be padded down to match them in output. The only question I have is if the limited specs available for these drivers can be trusted. The written specs for the tweeter state 114dB sensitivity while the graphed response shows 100db, both of these could be possible though the 114dB claim is a bit of a stretch.... something around 105dB would be more realistic. But there is nothing on the graph to indicate that the SPL scale has been calibrated so the indicated spl could be meaningless.
Bottom line you will have to test and adjust as necessary, a pair of 12's should have an average sensitiivity of 97dB (94dB@1w is typical for a 12" PA driver), so the tweeter still needs a 3dB L-pad to match them, if the tweeter sensitivity is higher the pad has to be increased in value.. no big deal.
conanski,
i completely agree with you that these sp-35s tweeters seem sketchy. what i can tell you is that i give these a whooping 250rms each and they swallow it all although, i do this with a car amp, and i cannot say what the true output is of the amp either, but it is supposed to be 250wrms each.
i have two new options that i have found that is realistically within my budget:
https://www.lautsprecherforum.eu/viewtopic.php?t=5463
https://www.lautsprecherforum.eu/viewtopic.php?t=5738
can you give me your thought on these two?
i completely agree with you that these sp-35s tweeters seem sketchy. what i can tell you is that i give these a whooping 250rms each and they swallow it all
although, i do this with a car amp, and i cannot say what the true output is of the amp either, but it is supposed to be 250wrms each.i have two new options that i have found that is realistically within my budget:
https://www.lautsprecherforum.eu/viewtopic.php?t=5463
https://www.lautsprecherforum.eu/viewtopic.php?t=5738
can you give me your thought on these two?
Unless you use the drivers they did you won't get those results. Your original proposal could be improved with a better tweeter so if you were buying new components I would suggest doing that instead.
Not likely at all.. the tiny voice coil in these drivers would vaporize like a fuse in moments at that power level.what i can tell you is that i give these a whooping 250rms each and they swallow it all
conanski,
yeap,
so looking at the 12a/301-PA, i am up to 300 euros for another pair of 2*12", or a whooping 450 euros to get rid of my odd single 112PA driver. that means i still have a pair of tw-35s, that is not ideal for my setup...
OR, i can go for 4 of these: https://www.lautsprecherforum.eu/viewtopic.php?t=5463
for a total of about 600 euros, with a nice transition to the compression drivers. that means, however, that i lose about 4db in sensitivity compared to 12a/302-PA.
i could also go for 4 of this more expensive version: https://www.lautsprecherforum.eu/viewtopic.php?t=5738
that would be 800 euros in speker components, more or less. that gives me a 99db sensistivity, same as the 12a/302pa
how will they perform compared to a cheaper "off the shelf" top speaker? such as these:
https://www.thomann.de/se/the_box_p...4gHDYSqIMuh0YTKE1BDyg-jBy0wX0q_AaAnu0EALw_wcB
or:
https://www.thomann.de/se/behringer...p-oUbxotswlra-_zEaHYApNcNAjVGMkoaAjWGEALw_wcB
yeap,
so looking at the 12a/301-PA, i am up to 300 euros for another pair of 2*12", or a whooping 450 euros to get rid of my odd single 112PA driver. that means i still have a pair of tw-35s, that is not ideal for my setup...
OR, i can go for 4 of these: https://www.lautsprecherforum.eu/viewtopic.php?t=5463
for a total of about 600 euros, with a nice transition to the compression drivers. that means, however, that i lose about 4db in sensitivity compared to 12a/302-PA.
i could also go for 4 of this more expensive version: https://www.lautsprecherforum.eu/viewtopic.php?t=5738
that would be 800 euros in speker components, more or less. that gives me a 99db sensistivity, same as the 12a/302pa
how will they perform compared to a cheaper "off the shelf" top speaker? such as these:
https://www.thomann.de/se/the_box_p...4gHDYSqIMuh0YTKE1BDyg-jBy0wX0q_AaAnu0EALw_wcB
or:
https://www.thomann.de/se/behringer...p-oUbxotswlra-_zEaHYApNcNAjVGMkoaAjWGEALw_wcB
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Is this for free party type of events... out in the bush or at abandoned properties? If you have to carry everything in/out and/or there is potential the gear could be confiscated by authorities if you get busted then use what you got and keep the boxes smaller. Cheap dual 15's are just ugly... big, heavy, and not great sounding.
2 boxes vs 4.
A single dual 12 box gets louder than a pair of single 12's if the singles are pointed straight forward, that is because of comb filtering. However a pair of boxes can cover a wider listening area if they are splayed.
2 boxes vs 4.
A single dual 12 box gets louder than a pair of single 12's if the singles are pointed straight forward, that is because of comb filtering. However a pair of boxes can cover a wider listening area if they are splayed.
its only built to be used for this event:
but sure it would be prefered if it can be used on other events too
oh, comb filtering? new word - will look it up.
if you look at the video - you will see that i will just pile up the speakers at the front of the truck bed and call it the day basically
as you can imagine, being loud is most important. big square boxes would be easier to stack together
i'm really thinking this through before spending like 1 month of salary on a speaker setup to make sure i get the most ideal stuff for my use case
but sure it would be prefered if it can be used on other events too
oh, comb filtering? new word - will look it up.
if you look at the video - you will see that i will just pile up the speakers at the front of the truck bed and call it the day basically
as you can imagine, being loud is most important. big square boxes would be easier to stack together
i'm really thinking this through before spending like 1 month of salary on a speaker setup to make sure i get the most ideal stuff for my use case
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