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Speaker components confusion...

LotzaMatza

LotzaMatza

New Member
So. I'm trying to build a "boombox" type speaker that will have 2 tweeters and 2 woofers. The component speaker sets come with 2 woofers, 2 tweeters, and 2 crossovers. My question is, If I have that set up, and I want to use a simple bluetooth amp board to power them, do I need a 50W*2 + 100W 2.1 board or a 50W*2 + 100W*2 board? I'm getting confused reading online about this subject I need someone to just explain what I need to do to build my speaker haha. Also, with whatever amplifier I get suggested, how do I wire up the crossovers?

Component Speakers: https://www.amazon.com/JBL-GT7-6C-Component-Speaker-System-Set/dp/B00OYGV6IQ/ref=sr_1_7?keywords=jbl+component+speaker+set&qid=1581206418&sr=8-7&th=1

EDIT: I believe it would be a similar build to this build on youtube.
 
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Lavane said:
Have you looked at the boom box kits at Partsexpress? Class D amps included. One has a small sub. Two tweeter, two.l drivers and the sub. The kits come with nice CNC cut boxes.
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I have. They are a little too expensive for me and I have the tools to cut the pieces in a similar way with a laser cutter. I'd also like to be able to build it from my own design. My main issue is how exactly everything would go together. This amp is the one I'd like to buy, and along with my component speaker set I posted before, is this all I need besides my power supply?
 
All four drivers go into the box and become one "speaker" and you will need just one amp to drive it.
You need multiple amps to drive individual drivers if you're making a speaker with an active crossover, which you're not (as far as I can tell).
 
LotzaMatza said:
My main issue is how exactly everything would go together. This amp is the one I'd like to buy, and along with my component speaker set I posted before, is this all I need besides my power supply?
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That amp appears to be a subwoofer amp. You have bought two tweeters.
Can I ask where you would put yourself on a scale of 1 - 10 as regards knowledge/experience in speaker building?
Maybe a fully designed, complete kit would be more suitable for you.
 
rothwellaudio said:
That amp appears to be a subwoofer amp. You have bought two tweeters.
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Me, I wouldn't go about this project the way the OP is. But as far as the products he's looking at on Amazon, your description here doesn't match what I see.

E.g. for the speakers, there are definitely four speakers (apparently car speakers) shown on the product page that the OP linked to (pic below is from that same page).

And as for the amp board, I find the product page confusing, but if you scroll down to the review comments, several reviewers say they are using it for speaker ensembles and not just for subwoofer alone. E.g. one reviewer says this: "Surprisingly powerful little amp! Bought this to build a Bluetooth speaker, running two 3” mids, two 1” tweeters and a 5.25” neo subwoofer. Was blown away how great it sounds!"


61qI16euBML._AC_SL1000_.jpg
 
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UsableT said:
Me, I wouldn't go about this project the way the OP is. But as far as the products he's looking at on Amazon, your description here doesn't match what I see.

E.g. for the speakers, there are definitely four speakers (apparently car speakers) shown on the product page that the OP linked to (pic below is from that same page).

And as for the amp board, I find the product page confusing, but if you scroll down to the review comments, several reviewers say they are using it for speaker ensembles and not just for subwoofer alone. E.g. one reviewer says this: "Surprisingly powerful little amp! Bought this to build a Bluetooth speaker, running two 3” mids, two 1” tweeters and a 5.25” neo subwoofer. Was blown away how great it sounds!"


61qI16euBML._AC_SL1000_.jpg
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Let me clarify what I meant - the drivers the OP has bought include two tweeters.
As for amp linked to, it says "100W Subwoofer Amplifier Board;Frequency response range: input: 20 hz - 20 KHZ, output: 20 hz - 180 hz".
 
rothwellaudio said:
As for amp linked to, it says "100W Subwoofer Amplifier Board;Frequency response range: input: 20 hz - 20 KHZ, output: 20 hz - 180 hz".
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That's just for the subwoofer output. Keep scrolling down and the description & specs will mention the non-sub output. E.g. when you get down to the "Product description" details, you'll start seeing stuff like this:
2.0 channel mode: it is recommended to use a max power of DC21V and a full range speaker of 50W*2 4Ω for the best working condition.

2.1 channel mode: it is recommended to use a max power of DC24V, a L/R speaker of 50W 4Ω and a subwoofer speaker of 100w 8Ω for the best working condition.
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And there's a table that goes along with this, showing "left right channel output" as separate from "bass channel output."

As I say, the description is horribly confusing.
 
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Hey, @LatzaMatza - see my comment above in response to @rothwellaudio. I just realized, if you keep scrolling down the product page for that little bluetooth amplifier board you think you might want to buy, you will come to a bunch of specs, e.g. an outline diagram of the controls - and below that, a heading that says Please look carefully,Choose the right speaker,Then connect correctly according to your needs!

Right below that heading is a table with columns for power supply (in volts), and then speaker impedance, output power in watts, and max output power - first for the right/left channels, then for the bass channel. That information (assuming it's accurate) could in theory help with picking appropriate speakers . . . but only if you're sure you want to use this particular amp.

Or even easier, if you scroll back up that page, just above the skeleton diagram of the amp controls, you'll see a heading in small type called "Tips" - there are two sentences below, one for "2.0 channel mode" and the other for "2.1" channel mode. I quoted those sentences above in my response to @rothwellaudio. That might also be helpful.

Either way, I wouldn't be buying those speakers you have in mind just yet. In my opinion you'd be better off starting a new thread with a much more basic question - something like "How might I put together something similar to this kit from Parts Express, or to the bluetooth boombox in this video, but get away with spending less money??" And maybe even add, "Might this bluetooth amp be suitable for that purpose, whether in 2.1 or 2.0 mode??"

That way you might get some helpful answers, and not just people informing you that you've trying to build a powered bluetooth + boombox speaker out of apples and oranges.

.
 
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UsableT said:
Hey, @LatzaMatza - see my comment above in response to @rothwellaudio. I just realized, if you keep scrolling down the product page for that little bluetooth amplifier board you think you might want to buy, you will come to a bunch of specs, e.g. an outline diagram of the controls - and below that, a heading that says Please look carefully,Choose the right speaker,Then connect correctly according to your needs!

Right below that heading is a table with columns for power supply (in volts), and then speaker impedance, output power in watts, and max output power - first for the right/left channels, then for the bass channel. That information (assuming it's accurate) could in theory help with picking appropriate speakers . . . but only if you're sure you want to use this particular amp.

Or even easier, if you scroll back up that page, just above the skeleton diagram of the amp controls, you'll see a heading in small type called "Tips" - there are two sentences below, one for "2.0 channel mode" and the other for "2.1" channel mode. I quoted those sentences above in my response to @rothwellaudio. That might also be helpful.

Either way, I wouldn't be buying those speakers you have in mind just yet. In my opinion you'd be better off starting a new thread with a much more basic question - something like "How might I put together something similar to this kit from Parts Express, or to the bluetooth boombox in this video, but get away with spending less money??" And maybe even add, "Might this bluetooth amp be suitable for that purpose, whether in 2.1 or 2.0 mode??"

That way you might get some helpful answers, and not just people informing you that you've trying to build a powered bluetooth + boombox speaker out of apples and oranges.

.
Click to expand...
Hey thank you for the help man I'll start up a new thread right now! New Thread
 
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