efficient SPL tops DIY

[conanski]

Ah a mobile setup, OK, I have done a bunch of those.

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

YES!! A decent quality set of speakers could be used at any event and would have reasonable resale value, where as junk speakers are often money wasted.
Is there much of a used equipment market in your area? Buying a set of older passive speakers that need some TLC can be very cost effective.

 

[HickeHiskelig]

yes, a generator driven mobile setup!

there is actually very little used equipment - i also made a post in a facebook group out yesterday with very little response. most of it is PRO rated and very expensive. car audio is much bigger market in my country
making a 4*12" box of monacor drivers would probably not have a good resale value lol. but i bet it would be very loud


i found these cheap horns:
https://www.brl.se/sv/artiklar/ds18-pro-dr1pk44-1tums-driver-med-horn.html
response curve here: https://www.brl.se/bilder/artiklar/pdf/803PRODR1PK44.pdf
these are 35 euros each! although i have no idea how they sound though. maybe it would be better getting something PA rated instead of car audio rated...

with a cheap DSP like this one https://www.thomann.de/se/the_t.racks_dsp_4x4_mini_pro.htm
i could cut them at like 2000hz and make them work with my monacor 12" drivers
would that be a good option or should i go for the speaker kit i linked in my previous post? i honestly don't know


i still need that DSP for my ss15 subs so i will have to get it anyways


EDIT: what about any like any of these two? https://en.toutlehautparleur.com/sp...aton-hth-8-7-8-ohm-front-7-68-x-6-1-inch.html

https://en.toutlehautparleur.com/sp...river-with-horn-ciare-pt252-8-ohm-1-inch.html

 

[conanski]

Yeah those drivers would do a much better job with the 12's, the specs look realistic and yes crossed at 2khz should do very well. They don't mention the coverage angle of the horn but it's a screw on so you could swap on something else, something that is about 90deg x 40deg would be good.

 

[HickeHiskelig]

i am assuming the visaton is the better one of them, since it is not dropping as much in the 15-20khz range and has higher power handling

what would be an ideal tuning frequency for the monacor 12a/302pa? considering i now have jbell ss15 for the lower range

 

[conanski]

I like the DS18 better than either of those two.

 

[HickeHiskelig]

ah okay,
and also VERY affordable. should i get those or is there any other driver you would consider?

 

[conanski]

what would be an ideal tuning frequency for the monacor 12a/302pa? considering i now have jbell ss15 for the lower range

You could do sealed boxes, a bass reflex(ported) design just flattens response below 200hz or so, everywhere else the sealed box has the same output.

 

[conanski]

ah okay,
and also VERY affordable. should i get those or is there any other driver you would consider?

I looked through that website and I thought I saw another version of that driver... not sure because I couldn't figure out how to do a translate. Is there 2 versions of the driver?

 

[HickeHiskelig]

check here: https://www.brl.se/shop?funk=gor_sokning&term=horn#{%22Sokterm%22:%22horn%22}
they have lots of horns

same brand:

https://www.brl.se/sv/artiklar/ds18-pro-twx5-grov-spl-diskant.html
curve: https://www.brl.se/bilder/artiklar/pdf/803PROTWX5.pdf

or 200 euros for this one: https://www.brl.se/sv/artiklar/ds18-pro-dkh2-galen-2tums-driver-med-horn.html

 

[conanski]

I like this one... https://www.brl.se/sv/artiklar/ds18-pro-d2-extrem-2tums-driver-med-titanmembran.html

 

[HickeHiskelig]

well, that would be very loud! 2" driver. i will see what i can find on my used car audio marketplace because i am sure i could find these or something similar used

maybe i could put 2 drivers on a high pillar, and blast it a decent 200-270 degrees from the truck bed

i also had a thought about getting a wall of these for the midrange instead of 12": https://www.brl.se/sv/artiklar/madpm164.html
they are only 10 euros each when buying in bulk! 32 of them!

btw, look at these 8" midrange 1000wrms... https://www.brl.se/sv/artiklar/ds18-pancado-pro-1kp84-extrem-8-tums-midbas-styck.html

frequency curve here: https://www.brl.se/bilder/artiklar/pdf/803PRO1KP84.pdf


here are even more drivers for you: https://www.jjaudio.se/diskant/driv...taW4lMjI6MCwlMjJtYXglMjI6OTk5OTk5OTk5JTdEJTdE

if you open it in google chrome, you can translate the webpage


fyi, 1 euro = 11 SEK

 

[conanski]

It may be counter intuitive but the wider you make a cluster of driver the narrower the coverage, the ideal driver stack is a single tall line but that type of speaker system is not always the best solution.

A 2" exit CD might be a step too far for what you want to do, I don't see a compatible horn for it anyway.
Power handling for most compression drivers is irrelevent so don't get hung up on that, nobody puts hundreds of watts into one unless they are building a weapon.
Those 8's are somewhat interesting, they look like beasts but have low sensitivity so not a great choice.

 

[HickeHiskelig]

yes, i want to stick to high sensitivity
but 32 of these ? https://www.brl.se/sv/artiklar/madpm164.html

well, this got a bit out of hands..

but sticking to these would be fine? https://www.brl.se/sv/artiklar/ds18-pro-dr1pk44-1tums-driver-med-horn.html

 

[fabricadetabaco]

If I were you I would sell the out of production bass you have and buy one more of the other still in production and build a pair of small top from what you have then with the two then same type of basses and the tweeters I’m sure they will work fine for the application in mind, 40l should be enough.

 

[HickeHiskelig]

i need 4*12", i already tried studentflak with my existing setup of 2*12", and sure it worked, no one complained but i was asked if it could be turned up higher. 4 would be so much better

 

[conanski]

but sticking to these would be fine? https://www.brl.se/sv/artiklar/ds18-pro-dr1pk44-1tums-driver-med-horn.html

Yes, those drivers with a pair of 12's in cabs like these... https://www.speakerplans.com/index.php?id=x12

 

[HickeHiskelig]

great!
do i have to build them with that form or can i keep them square? easier to build + easier to stack together

should i build passive crossover for them? i can of course do it all with DSP, but it would be somewhat nice with passive filter to get less number of channels

 

[conanski]

Optimal deployment of boxes side by side looks something like this, that is he splay I menioned earlier. Trapazoid shaped enclosures are better for this but it can be done with rectangular boxes too.

Yes a passive 2-way crossover will make these easier to use, I suggest you zero in on the best settings with the DSP first and try to replicate that with the passive filters.

 

[HickeHiskelig]

alright, i will try to make it work


next question - XLR cables

for my four subs, i plan to run them on one channel. same for my two tops.
slapping one XLR on each box means 6 cables, to connect to 2 channels.. LOTS of cables!
wouldn't it be cheaper to have XLR cables to one sub and one top, and then use cheap 2.5mm2 speaker cable to connect them to the same channel, inside of the box with the xlr connection? otherwise i need some sort of xlr split thingie...
that means, all boxes will have one of these: https://www.soundimports.eu/nl/260-296.html and only one sub and top will have XLR

 

[conanski]

No don't put XLR connectors on the speakers use Speakon connecors (XLRs are not meant for hig power) and then get or make cables in the lengths you need.. short jumpers between the boxes and a longer run to the amp.