Hey guys! im new to the DIY part of "HIFI'ing" so i need a little help..
Im going to build a little boombox, and im thinking about useing these parts:
The Tripath TA2021 Amp
25Wx2 TA2021 Tripath T-Amp Class Stereo Amplifier SA-S3 | eBay
And the speakers:
Hertz HCX 690 (2200 danish is 300euros/pair)
And then af 8aH 12v battery
So now i ask you:
how would the tripath amp do with these speakers.. i've gotten a really good offer on the speakers so im quite sure i would go with them bt not if you guys say i shouln't ..
If the parts dont fit together, then what would you profer i would do? like what speakers does then fit the 2x25 watt amp or what amp fits the speakers i linked..
Im going to build a little boombox, and im thinking about useing these parts:
The Tripath TA2021 Amp
25Wx2 TA2021 Tripath T-Amp Class Stereo Amplifier SA-S3 | eBay
And the speakers:
Hertz HCX 690 (2200 danish is 300euros/pair)
And then af 8aH 12v battery
So now i ask you:
how would the tripath amp do with these speakers.. i've gotten a really good offer on the speakers so im quite sure i would go with them bt not if you guys say i shouln't ..
If the parts dont fit together, then what would you profer i would do? like what speakers does then fit the 2x25 watt amp or what amp fits the speakers i linked..
Those look like nice enough speakers, but they appear to be designed to handle a lot more power than you'll get from a T-amp.
What is your goal? Very loud, or very good?
If loud, I'd look for a high-efficiency speaker, 15 to 20 cm (6 to 8 inches), and an equally efficient horn tweeter.
If good, then the most cost-effective approach might be to cannibalize a pair of used speakers. Thrift stores, car boot sales, yard sales as appropriate. You should be able to find a nice pair of smallish two-ways (Europe or UK or US) for next to nothing (with patience and luck). (Yesterday I watched someone pick up a nice pair for $18 Canadian at the Salvation Army. I'd have grabbed them myself, but I was on bicycle, so settled for a tiny silver Sony PS2 for $15.) Maybe leave the speakers intact and make a matching middle box to contain the amp and battery and carrying handle.
What is your goal? Very loud, or very good?
If loud, I'd look for a high-efficiency speaker, 15 to 20 cm (6 to 8 inches), and an equally efficient horn tweeter.
If good, then the most cost-effective approach might be to cannibalize a pair of used speakers. Thrift stores, car boot sales, yard sales as appropriate. You should be able to find a nice pair of smallish two-ways (Europe or UK or US) for next to nothing (with patience and luck). (Yesterday I watched someone pick up a nice pair for $18 Canadian at the Salvation Army. I'd have grabbed them myself, but I was on bicycle, so settled for a tiny silver Sony PS2 for $15.) Maybe leave the speakers intact and make a matching middle box to contain the amp and battery and carrying handle.
Ny goal is to have a boombox that i can carry myself.. It dosn't has to be great sound but it still has to be okay.. I'm not much for the idea you first wrote, cause I'm not good in constructing speakers like that..
But I've seen people use floor standing speakers drivin by a tripath 2024 (2x15w) .. Those speakers were about 160rms
and the speaker I'm thinking about buying is way more powerful.. But which 12v amp would you prefer to drive the speakers i linked to. The triparh TA2050 or?
But I've seen people use floor standing speakers drivin by a tripath 2024 (2x15w) .. Those speakers were about 160rms
and the speaker I'm thinking about buying is way more powerful.. But which 12v amp would you prefer to drive the speakers i linked to. The triparh TA2050 or?
Drop the idea of using car audio speakers. They're crap and useless for the purpose.
Have a look at my Boominator design and thread. It should give you all the food for thought you can dream of.
http://www.diyaudio.com/forums/class-d/104402-boominator-another-stab-ultimate-party-machine.html
The Boominator | Facebook
Have a look at my Boominator design and thread. It should give you all the food for thought you can dream of.
http://www.diyaudio.com/forums/class-d/104402-boominator-another-stab-ultimate-party-machine.html
The Boominator | Facebook
Hey Saturnus!
i've read the whole thread some days ago, and i must say that the boominator is fantastic! i saw some at Roskilde this year
but what im going to "create" is not a big boombox like the boominator, its more lika a boombox with the same size as a JVC Boomblaster.. I thought about making it a little like this one: ipad boombox - YouTube watch from 0:45 .. because i have an ipad.. but im not that good in crossover and stuff like that.. i believe a crossover is what we in Denmark call a "dele filter" right?.. My thought wass using a 2x25 tripath and then some passiv speakers that already are in a box like a normal passive speaker, or the other option of using car speakers so i wont need a crossover.. only 5-6 km away from where i ive, i saw those speakers i linked for a good price, so i was thinking if thoes would work with 2x25watt.. The boombox will be used to play in Parks and small outdoor communities after school on fridays to play for 10-12 people.. It also has to be used at Roskilde but only when we are in the chill mode after og during sunset in company with some fernet branca.. for the night parties we have a much much much bigget set up
hope you can helt me out
If you check out the specification for the speakers you linked, you'll quickly realize that at DKK2200 you're getting ripped off to say the least. If they were a tenth of that price for a pair it would be in line with their actual quality. They'd still as all other car audio speakers be completely useless for boombox use nevertheless so they'd always be a waste of money.
If you want something less serious than the Boominator, then a simple design based on a pair of Monacor SP-60/4, and a pair of cheapo tweeters filtered with just a series cap on the tweeters. There are a few examples of designs like this on the 41Hz Audio - Main page forum. This will set you back about DKK500 max, and will be able to play louder (more sensitivity) and go just as deep in the bass, and the sound quality will be several classes better than those speakers you linked to.
If you want something less serious than the Boominator, then a simple design based on a pair of Monacor SP-60/4, and a pair of cheapo tweeters filtered with just a series cap on the tweeters. There are a few examples of designs like this on the 41Hz Audio - Main page forum. This will set you back about DKK500 max, and will be able to play louder (more sensitivity) and go just as deep in the bass, and the sound quality will be several classes better than those speakers you linked to.
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okay :b well i could get the speakers i linked for 400DKK :b but i think i will use your idea :b so you are saying that i should buy those from Monacor and then some tweeters. Which price range would you prefer the tweeters to be in?. :b
That "series cap" you write is that something like this LSR-10/20 or? i saw you used them in the boominator i think :b
That "series cap" you write is that something like this LSR-10/20 or? i saw you used them in the boominator i think :b
Nah, that's a series resistor
The reason that car audio speakers are useless for boombox use is that they require far too large boxes to get proper bass response outdoor. They're designed to play in a very very small room (the inside of the car) and have terrible efficiency because they in principle have an endless power supply (the engine). Calc'ing on those speakers you linked to would mean they'd need a cabinet of roughly the same size as the boominator so get any real bass performance. The Monacors should be in a roughly 3-4 liter cabinet, each, ie. 8-10 times smaller.
If you want my recommended shopping list:
Tweeters: ND16FA-6 - Dayton 5/8 inch Neodymium Dome Tweeter - Europe Audio
Woofers: SP-60/4 - Monacor HiFi bass-midrange speakers 60Wmax 4Ω - Europe Audio
Series cap: LSCP-68R - MKP polypropylene foil capacitor 6.8µF 250V - Europe Audio
That's all you need. Total DKK521 including shipping from Germany.
EDIT: I'd recommend those 4" woofers. They are like the 10" woofers I use in the Boominator exceptional value-for-money. True gems that are very hard to find.
EDIT2: You might want to order some grills too while you're at it. Or you can use some standard fan grills.
The reason that car audio speakers are useless for boombox use is that they require far too large boxes to get proper bass response outdoor. They're designed to play in a very very small room (the inside of the car) and have terrible efficiency because they in principle have an endless power supply (the engine). Calc'ing on those speakers you linked to would mean they'd need a cabinet of roughly the same size as the boominator so get any real bass performance. The Monacors should be in a roughly 3-4 liter cabinet, each, ie. 8-10 times smaller.
If you want my recommended shopping list:
Tweeters: ND16FA-6 - Dayton 5/8 inch Neodymium Dome Tweeter - Europe Audio
Woofers: SP-60/4 - Monacor HiFi bass-midrange speakers 60Wmax 4Ω - Europe Audio
Series cap: LSCP-68R - MKP polypropylene foil capacitor 6.8µF 250V - Europe Audio
That's all you need. Total DKK521 including shipping from Germany.
EDIT: I'd recommend those 4" woofers. They are like the 10" woofers I use in the Boominator exceptional value-for-money. True gems that are very hard to find.
EDIT2: You might want to order some grills too while you're at it. Or you can use some standard fan grills.
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okay :b thank you so much!
But are you sure it will play loud and deep enough?
and while we are at it.. which amp would you prefer? im a little in love with the tripath 2021 2x25w .. but i can see you are using amps from another website than ebay.. I would like an amp that are already in a box cause again; im not good in all that stuff with connecting all those small things you know
But are you sure it will play loud and deep enough?
and while we are at it.. which amp would you prefer? im a little in love with the tripath 2021 2x25w .. but i can see you are using amps from another website than ebay.. I would like an amp that are already in a box cause again; im not good in all that stuff with connecting all those small things you know
It will play louder, deeper and better than the car audio speakers you linked to in a cabinet 8 times smaller.
Use whatever (tripath) amp you're comfortable with. I use those from 41hz because they're the best and still cost very little. On the other hand there's no cabinet and you have to solder them yourself.
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I have been looking for information about speakers and am trying to understand but I am still a complete retard when it comes to the technical specs.
As far as I can understand sensitivity is key to keeping down power consumption in a portable diy boombox and when reading this thread I was completely puzzeled. It seemes that the Hertz HCX 690 has a sensitivity of 94db and the Monacor SP-60/4 has a sensitivity of 90db. Then what makes those speakers louder and better??
Have been looking at a lot of car fullrange speakers to keep down weight and they also seem more rugged than home speakers.
But now I am back to square one since I obviously am completely of track about choosing the proper speakers for my build.
And also while I am on the subject of diy boomboxes there are a few other questions I would like to have explained to me.
Having capacitors between the amp and speakers?? Why and exactly what does that do?
And about the amp.. How exactly does it work with power consumption compared to sound on different size amps? If i have a 20w amp and a 100w amp and play the music at the exact same volume, do they draw the same amount of power from the batteries? I mean if I want to have maximum efficiency and the lowest power consumption but still have the possibility to go extremely loud (just for fun ) .
I am not sure if I explain thet well since I am a complete novice in this area but I really want to know why things work and not just that they do
And please explain like you would to a mentally challenged child.
(Tried to find the information for myself, but the people who really know about these things and have written about it tend to be very technical and explain it in terms that require prior knowledge about the subject and is usually just rows of (to me) incomprehensible numbers)
Give a man a boombox and he will be happy for one festival (until someone pukes on it and sets it on fire).
Teach a man how to build a boombox and he will be happy for the rest of his festivalgoing days.
As far as I can understand sensitivity is key to keeping down power consumption in a portable diy boombox and when reading this thread I was completely puzzeled. It seemes that the Hertz HCX 690 has a sensitivity of 94db and the Monacor SP-60/4 has a sensitivity of 90db. Then what makes those speakers louder and better??
Have been looking at a lot of car fullrange speakers to keep down weight and they also seem more rugged than home speakers.
But now I am back to square one since I obviously am completely of track about choosing the proper speakers for my build.
And also while I am on the subject of diy boomboxes there are a few other questions I would like to have explained to me.
Having capacitors between the amp and speakers?? Why and exactly what does that do?
And about the amp.. How exactly does it work with power consumption compared to sound on different size amps? If i have a 20w amp and a 100w amp and play the music at the exact same volume, do they draw the same amount of power from the batteries? I mean if I want to have maximum efficiency and the lowest power consumption but still have the possibility to go extremely loud (just for fun
) .I am not sure if I explain thet well since I am a complete novice in this area but I really want to know why things work and not just that they do
And please explain like you would to a mentally challenged child.
(Tried to find the information for myself, but the people who really know about these things and have written about it tend to be very technical and explain it in terms that require prior knowledge about the subject and is usually just rows of (to me) incomprehensible numbers)
Give a man a boombox and he will be happy for one festival (until someone pukes on it and sets it on fire).
Teach a man how to build a boombox and he will be happy for the rest of his festivalgoing days.
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