Boominator MINI (development thread) |
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ravni
New Member Joined: 14 January 2013 Status: Offline Points: 1 |
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Hi, will there be a schematic of this filter made public? ps. can't wait to make my own!!
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Edd Jordan
Young Croc Joined: 10 January 2008 Location: United Kingdom Status: Offline Points: 1364 |
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i like it. has there been any developmental in LiFePO4 battery prices as these would make it lighter. last time i looked into them though still too expensive.
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I do a sideline in ply wood wheels.
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Phaedras
Registered User Joined: 29 October 2012 Location: Denmark Status: Offline Points: 13 |
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I'm likely to do one, do you have more info on the filter Saturnus? The impedance of the woofers seem to be around 15 ohm at the crossover frequency.. What impedance did you use to calculate the filter?
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Saturnus
Old Croc Joined: 13 July 2010 Location: Copenhagen Status: Offline Points: 2025 |
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8 ohm (2 in parallel) and 4 ohm for the tweeter which is half the impedance at x-o for one tweeter. |
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Edd Jordan
Young Croc Joined: 10 January 2008 Location: United Kingdom Status: Offline Points: 1364 |
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I do a sideline in ply wood wheels.
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Saturnus
Old Croc Joined: 13 July 2010 Location: Copenhagen Status: Offline Points: 2025 |
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I think I saw a LiFePO4 in a standard 12V 7Ah package with built-in BMS for as low as $60 excluding freight recently. |
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Edd Jordan
Young Croc Joined: 10 January 2008 Location: United Kingdom Status: Offline Points: 1364 |
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Well that is a great price i wonder if there are any 24v packs around the same price.
i love the look of the mini boominator cant wait to hear one at a festival this year.
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I do a sideline in ply wood wheels.
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Saturnus
Old Croc Joined: 13 July 2010 Location: Copenhagen Status: Offline Points: 2025 |
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That's for the one I referred to earlier. But dig around Aliexpress. A vast number of manufacturers/resellers have emerged in the last 2-3 months.
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Edd Jordan
Young Croc Joined: 10 January 2008 Location: United Kingdom Status: Offline Points: 1364 |
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£62 with shipping not a bad price getting cheaper any how. end of thread hijack.
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I do a sideline in ply wood wheels.
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Pepto
New Member Joined: 03 January 2013 Location: Sweden Status: Offline Points: 4 |
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Saturnus, thank's so much for the sketchup's and all the info. I'm planning to build a mini during the winter.
I would however want to bring the price down just a bit more - If I were to swap the Dayton tweeters for piezo horns instead, would I compromise the integrity of the box in a way that would significantly hurt the sound? I'm thinking about going for Goldwood piezos, available for under $2 at PE (compared to $12 for the Daytons). Is this a terrible idea?
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Saturnus
Old Croc Joined: 13 July 2010 Location: Copenhagen Status: Offline Points: 2025 |
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Yes. I think it is but I can't stop you. Just note that you have to dampen the piezoes by several dB. (A series resistor does not dampen a piezo). Btw, I just noticed that Intertechnik also has the Dayton tweeters in stock at a good price (€10 each) which is a good deal cheaper than buying them in the States when custom fees and VAT is considered. Appearantly Loudspeakershop has them even cheaper at €8½ each. That's cheaper than PE even in retail. Edited by Saturnus - 17 January 2013 at 10:49am |
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Pepto
New Member Joined: 03 January 2013 Location: Sweden Status: Offline Points: 4 |
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You saying its a terrible idea would definitely stop me :) Piezos worked well in the original boominator, so i thought they might work for the mini as well. I will stay with the Daytons now tough.
Thanks for the shop tips. I will try and find cheap stores closer to Sweden (within EU at least).
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