getting close to wring up my first halfnator. I have remixed the boominator by cutting it in two. Each half has two smaller ports (same overall area) and same internal volume as a stock boominator. The box was cnc cut and will have removable faceplates.
I am working on having a pair so that each can work as a mono box and when you link them with an interconnect cable they will run as a stereo set.
I hope to get the link working using a 12v fm transmitter as then we could have a party on wheels (I use them as our longboarding sound system.
I just read that the holes in the brace need to be that way to brake up the standing wave... BUGGER... I cut these like so as I was thinking airflow was good and the holes were a method used for simple saw/drill construction.... Should I just stuff with a little batting?
I have had real trouble getting decent tweeters so had to settle for these:
Surplustronics - Piezo Tweeter - 85mm x 85mm 100 Watts max.
they are ok, sound a little average to be honest....
Surplustronics - Piezo Horn Tweeter - 7 Inch x 3 Inch 150 Watts
These were a little better but still poo....
Could any one make a suggestion as to the best tweeter option from this store or a good online source that wont charge $100+ in shipping to new Zealand....
PS still looking for an amp 9 basic and amp 6 basic/sneaky build instructions so I can upgrade from the amps that will sub in for the time being.
I am working on having a pair so that each can work as a mono box and when you link them with an interconnect cable they will run as a stereo set.
I hope to get the link working using a 12v fm transmitter as then we could have a party on wheels (I use them as our longboarding sound system.
I just read that the holes in the brace need to be that way to brake up the standing wave... BUGGER... I cut these like so as I was thinking airflow was good and the holes were a method used for simple saw/drill construction.... Should I just stuff with a little batting?
I have had real trouble getting decent tweeters so had to settle for these:
Surplustronics - Piezo Tweeter - 85mm x 85mm 100 Watts max.
they are ok, sound a little average to be honest....
Surplustronics - Piezo Horn Tweeter - 7 Inch x 3 Inch 150 Watts
These were a little better but still poo....
Could any one make a suggestion as to the best tweeter option from this store or a good online source that wont charge $100+ in shipping to new Zealand....
PS still looking for an amp 9 basic and amp 6 basic/sneaky build instructions so I can upgrade from the amps that will sub in for the time being.
Attachments
I am using p audio pht 406 hornloaded tweeter. What can i use to lower the volume on these tweeters? They're dominating the soundpicture.
You could try dampening the tweeter even more but it won't help that much really. It's not a driver that is suited for this purpose.
Dampening by using resistors? Do they have to be at the same sensitivity as the hp10w? Down from 105 db to 95? If so, which resistors should i use?
Nothing right now, just straight to the amp. Tested it on low volum. I think im gonna cross it at 4k hz. But my question is still..how to lower the horns?
While we are on the subject of batteries; I had my batterpack spot welded yesterday and finished wiring the BMS today:
Nice work! Do you have any documents and/or supplier for those BMS?
Regards,
doc
Hello there, i built a Boominator Mini for last years Roskilde, and this year I'm ready to upgrade.
I have a few questions before i start buying everything, the build I'm making has room for a 12V 17A SLA battery, and the solar panel I've chosen (the one from canopysound.dk) has an output of 10W, will i have to add in a regulator of sorts? Or will i be alright just hooking it up to the battery parallel to the amp? (I'd prefer the latter)
Also, on my build I've taken out the ventilation holes from the original electronics compartment, the amp I'm using is the one from Canopysound.dk aswell (Indeed HIFI or something, looks identical to the Muse M20 Ex2). Will that pose any problems?
And lastly, after building my boominator mini, I learned that I don't trust my DIY-skills enough to make a completely sealed box that could never be opened again if something went wrong. So I was thinking of just screwing on the top panel and adding a rubber strip (like the ones used in windows) around the speaker cabinets. Do you think that will be air tight enough?
Thanks!
I have a few questions before i start buying everything, the build I'm making has room for a 12V 17A SLA battery, and the solar panel I've chosen (the one from canopysound.dk) has an output of 10W, will i have to add in a regulator of sorts? Or will i be alright just hooking it up to the battery parallel to the amp? (I'd prefer the latter)
Also, on my build I've taken out the ventilation holes from the original electronics compartment, the amp I'm using is the one from Canopysound.dk aswell (Indeed HIFI or something, looks identical to the Muse M20 Ex2). Will that pose any problems?
And lastly, after building my boominator mini, I learned that I don't trust my DIY-skills enough to make a completely sealed box that could never be opened again if something went wrong. So I was thinking of just screwing on the top panel and adding a rubber strip (like the ones used in windows) around the speaker cabinets. Do you think that will be air tight enough?
Thanks!
Speaking of my Boominator Mini, i just found out that for some reason, the right channel plays much lower than the left channel on the amp. After we brought it to the festival it took some major hits, it still worked perfectly, except for the fact that sometimes when adjusting the volume on the amp there was some static. (It's a muse amp) - Is there anything i can do about the volume problem?
I'm assuming it's a problem with the amplifier, since it's the same channel that plays at a lower volume when i switch the speakers around. I can provide pictures if necessary.
Thanks in advance.
I was wondering if anyone had made a boominater from the blue arran boominater kit, With the qtx piezo's ?
Or maybe anyone know how they compare to the original Monaco piezo's ? Piezo tweeter, 100W max. from QTX 1.58 IN STOCK (5 Feb 2014)
Or maybe anyone know how they compare to the original Monaco piezo's ? Piezo tweeter, 100W max. from QTX 1.58 IN STOCK (5 Feb 2014)
a small interjection~ will this work?
It was mentioned here a few weeks back that I could achieve 19.2 volts (more charged) with 6 lifepo batteries....
6 x Tenergy Li ion 18650 Cylindrical 3 7V 2600mAh Rechargeable Batteries w Tabs | eBay
Tenergy 19 2V 6 Cell Intelligent 2 2A LiFePO4 Battery Pack Charger | eBay
running this....
TPA3116 2 1 Class D Amplifier Board 2X50W 100W DC 18V DC 24V | eBay
I'm only looking for an hour of play. 12 3000ma ni-mh aa batteries are playing it for 15 minutes or so. Any advise? Maybe a slightly larger battery?
Tor
It was mentioned here a few weeks back that I could achieve 19.2 volts (more charged) with 6 lifepo batteries....
6 x Tenergy Li ion 18650 Cylindrical 3 7V 2600mAh Rechargeable Batteries w Tabs | eBay
Tenergy 19 2V 6 Cell Intelligent 2 2A LiFePO4 Battery Pack Charger | eBay
running this....
TPA3116 2 1 Class D Amplifier Board 2X50W 100W DC 18V DC 24V | eBay
I'm only looking for an hour of play. 12 3000ma ni-mh aa batteries are playing it for 15 minutes or so. Any advise? Maybe a slightly larger battery?
Tor
Breadboard busking amp
Not anywhere near Boominator league, of course, but we did put this together after reading through the thread and thought we should thank all of you, especially Saturnus, in the way we've been invited, namely, posting pics.
We needed something to play through at a rally. Had been using a Crate Limo, which gave up the ghost. Built this with parts to hand and very, very low budget, applying as many principles gleaned from this thread as possible.
Uses Eminence Alpha 10-A, no name piezos, Lepai 2020, no name karaoke board (which powers mic, gives echo option, acts as pre-amp and channels two inputs into a mono line output), lithium cctv battery and, of course, several bread boards.
I'm sure it doesn't sound anything like a Boominator, nor a Qubinator for that matter (from which the idea was cribbed), but it beats the hell out of a Crate Limo, or any other mass produced busking amp we've heard.
So, thanks!
Not anywhere near Boominator league, of course, but we did put this together after reading through the thread and thought we should thank all of you, especially Saturnus, in the way we've been invited, namely, posting pics.
We needed something to play through at a rally. Had been using a Crate Limo, which gave up the ghost. Built this with parts to hand and very, very low budget, applying as many principles gleaned from this thread as possible.
Uses Eminence Alpha 10-A, no name piezos, Lepai 2020, no name karaoke board (which powers mic, gives echo option, acts as pre-amp and channels two inputs into a mono line output), lithium cctv battery and, of course, several bread boards.
I'm sure it doesn't sound anything like a Boominator, nor a Qubinator for that matter (from which the idea was cribbed), but it beats the hell out of a Crate Limo, or any other mass produced busking amp we've heard.
So, thanks!
Attachments
Ken ~
That thing looks amazing. How does it sound? I've wanted to have two ways on different planes (tweeters and woofers facing different ways) but I was concerned about things sounding uneven depending on where you stand... what have you found?
T
That thing looks amazing. How does it sound? I've wanted to have two ways on different planes (tweeters and woofers facing different ways) but I was concerned about things sounding uneven depending on where you stand... what have you found?
T
I've been reading about the qubinator for a few hours, and I am curious about the high frequency response with a large PA speaker. Does it need some trickery to get it to play highs without tweeters?
t
t
Hard to say, depends on what the comparison is. We applied as many Boominator rules & lessons as possible given the limits of our budget & materials already on hand, ending up with something that sounds dramatically better (and is hugely cheaper) than commercial gear, but we certainly skewed way off of the very exacting Boominator thread recommendations, so seems safe to assume that the thing is but a pale rendering of what it would sound like done right.
That being said, it sounds great to us -- plenty loud enough, lots of bass, and the mix between mid/highs is satisfactory enough that we used the "direct" button on the Lepai, bypassing bass/treble and saving power there (also removed the two diodes which light up the volume).
We did the"2-plane" setup because we had these really cool looking bamboo breadboards and it was only way to fit the speakers. This thing does have pockets of deader sound as you walk around it (best angle is slightly off-kilter to a tweeter plane), but compared to the Crate Limo it replaces, which only projected forward, it has superb surround sound.
Still futzing around with getting the mic/guitar inputs installed (regretfully setting aside attempt to build in phantom power), so haven't stuffed & sealed it yet, so should end up that much better.
Ken
I am building a boominator with HP10Ws and piezos. I use an AMP9 on 12V. At parties I would like to add an external subwoofer and a 24V power supply. I am wondering if this is possible without the need of an minidsp or another (energy consuming) active filter? I have drawn a scheme:
An externally hosted image should be here but it was not working when we last tested it.
Is this possible?
measureing piezos
Hi guys,
I can not get any info on the capacitance of the piezo tweeters I can get locally in nz and having trouble then working out my series resistors.
Could some one tell me if there is an easy way to measure the amount of capacitance a peizo tweeter has?
Thanks
jestah
Hi guys,
I can not get any info on the capacitance of the piezo tweeters I can get locally in nz and having trouble then working out my series resistors.
Could some one tell me if there is an easy way to measure the amount of capacitance a peizo tweeter has?
Thanks
jestah