Due to a personal financial crisis I have sold both my Boominator and my Roskilde ticket. So barring that I can find volunteer work (you're ll welcome to help me find some volunteer work at Roskilde if you happen to know anyone needing it) I'm not going to Roskilde for the first time since 1997. The Boominator is going to Metal Meet and Rock Werchter, btw.
The strong side of the Boominator has always been it's clear midrange with good depth and clarity on voices. It can cope with even layered brass music but a single piano could be a little better but then I'm comparing to my home speakers which are really good at that.
The strong side of the Boominator has always been it's clear midrange with good depth and clarity on voices. It can cope with even layered brass music but a single piano could be a little better but then I'm comparing to my home speakers which are really good at that.
Sorry to hear that Saturnus.. Set up some sort of account, and im sure people will pitch in, transfering some money for you to buy a ticket.. 🙂
I for one wouldnt mind sending you 100dkr for all the help you've provided me during my builds and im sure others would too 🙂
Yeah, I guess everyone you have helped with their silly questions could donate a small amount to make up for your time 🙂
I might have gotten a volunteer job there already, And then I can just smooch on all the Boominator builders for free beer 😀
From what i've read here:http://www.diyaudio.com/forums/class-d/90500-lepai-t-amp-ta2020-79.html, it sounds like the LED has some sort of protecting purpose. But im not sure at all.
Hi 🙂 Im new here and yes im a noob. I finally decided on building my own Boominator, yay 😀
Im going for the Rila sa38 and Spa 10pa since you cant get a hold of the other setup now.
So i have one question, what resistor should i use with the Piezo if any?
Rila SA38 Piezo - Ljudia - Multimedia Hemelektronik Karaoke PA anläggning DJ utrustning Ljus utrustning
10" bas/mid
Sry if the question already been answered, did a search but couldnt find any answer.
Im going for the Rila sa38 and Spa 10pa since you cant get a hold of the other setup now.
So i have one question, what resistor should i use with the Piezo if any?
Rila SA38 Piezo - Ljudia - Multimedia Hemelektronik Karaoke PA anläggning DJ utrustning Ljus utrustning
10" bas/mid
Sry if the question already been answered, did a search but couldnt find any answer.
Im back with another stupid question, or it feels so anyway.
Is there any reason not to use 4 peaces of 6 volt batteries in a serie to get 24 volts? I can get my hands on Panasonic LC-R067R2P (6v, 7.2 Ah) rather cheap. Im going to use Sure´s 2x25w board and it should survive up to 32V. Will there be a problem if i also use 12 volts (2 of the batteries) for example USB chargers? will the uneven consumption result in problems? The plane is to use a ctek charger for 24 batteries.
Supersperm
I would say no, the 91db/w/m is probably to love for the SPA-10PA. There is some piezo horns that go down to 1.8 Khz that should do the job. looke a few pages back. But this is more a guess from my part.
Is there any reason not to use 4 peaces of 6 volt batteries in a serie to get 24 volts? I can get my hands on Panasonic LC-R067R2P (6v, 7.2 Ah) rather cheap. Im going to use Sure´s 2x25w board and it should survive up to 32V. Will there be a problem if i also use 12 volts (2 of the batteries) for example USB chargers? will the uneven consumption result in problems? The plane is to use a ctek charger for 24 batteries.
Supersperm
I would say no, the 91db/w/m is probably to love for the SPA-10PA. There is some piezo horns that go down to 1.8 Khz that should do the job. looke a few pages back. But this is more a guess from my part.
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@Smoothy I found post u where talking about, but they seem quite big and expensive. Is 4 db really that much? Or do the bass drown the Piezo totally? Me and numbers are like oil and water...
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Hopefully someone here can help me with a few questions 🙂
My setup is:
AMP9 Basic
4 x P.Audio HP-10W.
4 x P.Audio PHT-407N.
How would I ideally go about setting them up?
Saturnus told me to put the P.Audio PHT-407N in series with a 4 uF cap between them at both sides of the Boominator. Would this 4.7 uF capacitor be close enough?
The HP-10W are of course going to be paralleled for 4 Ohm impedance but I need to use a low-pass filter. Could I use this 2-way 250W 2.5Khz/12dB filter?
And lastly, how do I set the input cap on the AMP9 Basic to cut at around 800 Hz as per Saturnus' advice?
Thanks for any answers and inputs! I will definitely give a beer at Roskilde Festival 😉
My setup is:
AMP9 Basic
4 x P.Audio HP-10W.
4 x P.Audio PHT-407N.
How would I ideally go about setting them up?
Saturnus told me to put the P.Audio PHT-407N in series with a 4 uF cap between them at both sides of the Boominator. Would this 4.7 uF capacitor be close enough?
The HP-10W are of course going to be paralleled for 4 Ohm impedance but I need to use a low-pass filter. Could I use this 2-way 250W 2.5Khz/12dB filter?
And lastly, how do I set the input cap on the AMP9 Basic to cut at around 800 Hz as per Saturnus' advice?
Thanks for any answers and inputs! I will definitely give a beer at Roskilde Festival 😉
no promises here but i think so yes. look at this one SFS-V2 Aka Festivalstereobygge #2 - Minhembio forum i have been speaking with him and he thinks that it works perfectly, the limited "sound spread" you get by using a horn is, by him, not o problem.
If one has two Boominators playing from the same audio source at the same time, are there some placement guidelines?
I'd presume just stacking them on top of each other would have sound cancellation problems.
I'd presume just stacking them on top of each other would have sound cancellation problems.
You are more than welcome. Sorry to hear about this! We should still make an event with all of us joining up together and share our experiences with the build if you're coming 🙂
I certainly hope you are! 😉
I'd place them some meters apart and have one only play left, and the other only play right. That would be ideal.
Im the guy Smoothy is talking about. i found my Piezos on the internet again and here is the link if you want to look: HENK'S - MGR CH-5 A
Sensitivity: 95 dB.
Freq: 2000-20000 Hz.
They work well, outside they spread the sound nicely but indoor they have a noticable narrow sweetspot. If you have some sort of equalizer (in the iphone/mp3player) you can easily correct the difference in sensibility between bas-piezos. I also covered them in bitumen/bitumex so they are a bit heavier and there is NO resonance and harsh "s" sounds anymore. The bitumex or plastic padding cover is a must with these big plastic horns.
Sensitivity: 95 dB.
Freq: 2000-20000 Hz.
They work well, outside they spread the sound nicely but indoor they have a noticable narrow sweetspot. If you have some sort of equalizer (in the iphone/mp3player) you can easily correct the difference in sensibility between bas-piezos. I also covered them in bitumen/bitumex so they are a bit heavier and there is NO resonance and harsh "s" sounds anymore. The bitumex or plastic padding cover is a must with these big plastic horns.
It's a must on all plastic horns, no matter how big or small in my opnion. It does make a noticeable difference.
And im going with Lepai LP-2020A+ amp, it have bass and treble controlls. And im going to use my IP4 as player. Or maybe intergrate my old PSP into the box somehow.
What resistors did you use with the Piezos? The 12 or the 100Ohms?
What resistors did you use with the Piezos? The 12 or the 100Ohms?
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12Ohm, just to have a resistor as most retailers recommend it for safety. And yes, the bitumen you found is correct. Theye come in different thickness and i think i have 4mm myself. Otherwise just use plastic padding if thats easier to find.
He wrote 12 Ohm 😉
But I think that's too little. I'd recommend 33-47 ohm as a starting point for experimentation. For example, you could buy 4 100 Ohm, and then see what is best. With 4 100 ohm you can build all these values:
400 (4s)
300 (3s)
250 (2p2s)
200 (2s)
150 (2p1s)
133 (3p1s)
100 (1s or 2s of 2p)
75 (3s1p)
67 (2s1p)
50 (2p)
33 (3p)
25 (4p)
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