Hi all,
I very new to the forum and this is going to be my very first ever system build , picked up a broken "DEVOOM" 5.1 surround system had a blown amp on it , I don't know much about what amps I can get for it or if I can replace it. So I decided to take the whole thing apart and salvage what I can for my build , my plan is either to build a vertical standing sound bar with a integrated subwoofer for just music or a vertical sound at for music and maybe TV / movies. What I managed to salvage is 10x10w 8ohm speakers, 5x5w 8ohm tweeters and 8" 50w subwoofers speaker. I'm still looking at designs and layout of the speakers , the only thing I'm little lost with is the amp to run the. Could I pair the speakers up say 2 pairs of 3 and 2 pairs or 2 then run it all of a 4.1 channel built in amp ? Is so what sort of amp I'm not sure where to start and what to look for.
I very new to the forum and this is going to be my very first ever system build , picked up a broken "DEVOOM" 5.1 surround system had a blown amp on it , I don't know much about what amps I can get for it or if I can replace it. So I decided to take the whole thing apart and salvage what I can for my build , my plan is either to build a vertical standing sound bar with a integrated subwoofer for just music or a vertical sound at for music and maybe TV / movies. What I managed to salvage is 10x10w 8ohm speakers, 5x5w 8ohm tweeters and 8" 50w subwoofers speaker. I'm still looking at designs and layout of the speakers , the only thing I'm little lost with is the amp to run the. Could I pair the speakers up say 2 pairs of 3 and 2 pairs or 2 then run it all of a 4.1 channel built in amp ? Is so what sort of amp I'm not sure where to start and what to look for.
Takes up way to much space and looking to build something little more compact , I've decided I'm going for the horizontal sound bar and separate subwoofer configuration
Do you have any recommendations something that can power 100w of speakers and a 50w subwoofer
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Could I use something like this ?
http://m.aliexpress.com/item/32246978296.html
If I wanted to do a Left - Center - Right + subwoofer option would I need a 3.1 channel Amp
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http://m.aliexpress.com/item/32246978296.html
If I wanted to do a Left - Center - Right + subwoofer option would I need a 3.1 channel Amp
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Yes.
I'll answer yes, but it probably isn't quite that easy.
Does anyone make a 3.1 amp? Does anyone record music or video soundtracks as 3.1? Do those 2 questions matter to a diy'er?
Once you go beyond the usual 2-channel stereo audio, you have to understand from where those other channels are sourced. Without some signal processing, a stereo recording will only provide stereo playback.
i been looking at AMP's all day and im getting very confused with the numbers i have 10 x 10watt 8 ohm speakers and would like to configuration each O represents a speaker in a segment of the sound bar
_________________________________
| OOO | OO | electronics | OO | OOO | ---wireless connection to sub---
--------------------------------------
i think its better i get an amp to run the 10 speakers something like a 2.0 200w amp then a seperate amp for the Subwoofer maybe with a wireless kit from soundbar to sub.
can anyone please help me with the electronic side of things just need part numbers ill need to hook everything up, the building of the boxes im good with 🙂
_________________________________
| OOO | OO | electronics | OO | OOO | ---wireless connection to sub---
--------------------------------------
i think its better i get an amp to run the 10 speakers something like a 2.0 200w amp then a seperate amp for the Subwoofer maybe with a wireless kit from soundbar to sub.
can anyone please help me with the electronic side of things just need part numbers ill need to hook everything up, the building of the boxes im good with 🙂
Are those O's three woofer, two tweeter groups?
If so, I would make it four woofers instead of three. That makes impedance easier to manage.
If so, I would make it four woofers instead of three. That makes impedance easier to manage.
sorry a actually forgot to mention the tweeters i have 10x 3" 10watt 8ohm speakers and 5x 2" 5watt 8ohm tweeters, im thinking of only using 4 of the 5 tweeters so it will look like below
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| O o O o O | O O | O O | O o O o O |
-------------------------------------
1.6ohm |4ohm|4ohm| 1.6ohm
as far as iv read its the ohm rating of the speaker devided by the number of speakers gives you the amount of ohm connected in parallel gives you the amount of ohm's the speakers will demand from the channel. if i get a Amp that has 4 ohm per channel the 1.6ohm demand is a bad thing for the channel.
i assume i wont be able to use the below amplifier board ?
http://www.parts-express.com/sure-electronics-6x100w-tda7498-class-d-amplifier-board--320-307
-------------------------------------
| O o O o O | O O | O O | O o O o O |
-------------------------------------
1.6ohm |4ohm|4ohm| 1.6ohm
as far as iv read its the ohm rating of the speaker devided by the number of speakers gives you the amount of ohm connected in parallel gives you the amount of ohm's the speakers will demand from the channel. if i get a Amp that has 4 ohm per channel the 1.6ohm demand is a bad thing for the channel.
i assume i wont be able to use the below amplifier board ?
http://www.parts-express.com/sure-electronics-6x100w-tda7498-class-d-amplifier-board--320-307
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You can use it.
Have you looked at 4-channel amps?
Use an online resistance calculator to play with various speaker combinations.
You haven't mentioned crossovers for the tweeters.
Have you looked at 4-channel amps?
Use an online resistance calculator to play with various speaker combinations.
You haven't mentioned crossovers for the tweeters.
Here is two pictures of my speakers I see there Is a small cap of some sort on the tweeter not sure what's it's purpose is, I also remember when I took the speakers apart that they were wired as below
Does this make it a parallel connection if so , is the ohm rating for the combined speakers 2.6Ohm ?
here is the system the speakers came from according to them the rating as are follows
http://www.mondoplast.ro/eng/Audio-speakers-DIVOOM-COMET-D2-pg_ft-2676
Subwoofer 50 Watts RMS into 4ohms at 100Hz at 10% THD Satellites 75 Watts RMS (5x15Watts) into 4ohms at 1kHz at 10% THD
http://www.bymeric.com/product.php?id_product=1865
- Subwoofer
- Satellites
LOL each site gives different specs for the same speaker system
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Last edited:
No, just think of it as one 8-ohm speaker. Those capacitors are the crossover. They block low frequencies from getting to the tweeters.
So looking at the drawing above and post #12, you want to connect each tweeter to a pair of the 10W speakers like in the drawing. You will have 4 of those sets (each 4-ohms). The other two 10W speakers can be run fullrange from that amp in the link. The amp, BTW, doesn't need the full 39V power supply. 20VDC @ 5A or thereabouts should be okay.
Are we good so far?
So looking at the drawing above and post #12, you want to connect each tweeter to a pair of the 10W speakers like in the drawing. You will have 4 of those sets (each 4-ohms). The other two 10W speakers can be run fullrange from that amp in the link. The amp, BTW, doesn't need the full 39V power supply. 20VDC @ 5A or thereabouts should be okay.
Are we good so far?
Sorry, missed your edit.
The subwoofer... The system needs another crossover, so the lowest frequencies go to the sub.
The power supply photo is the transformer. It needs rectifiers to provide DC.
Both these require some soldering to integrate with the other speakers. Or buy those circuits if someone sells them.
Or you can buy an amp and power supply and go with what you have so far.
The subwoofer... The system needs another crossover, so the lowest frequencies go to the sub.
The power supply photo is the transformer. It needs rectifiers to provide DC.
Both these require some soldering to integrate with the other speakers. Or buy those circuits if someone sells them.
Or you can buy an amp and power supply and go with what you have so far.
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