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It is currently 15 Nov 2019, 08:52

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PostPosted: 14 Oct 2019, 12:28 
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Joined: 14 Oct 2019, 11:39
Posts: 1
Hi all,

I'm planning to build a 2.1 Bluetooth System.

I wouldn't ming getting your opinion of the project and ALSO I need some help figuring out the XO.

So, here's the project:

2.1 in one 60 L vented box with the following hardware:

- 2 x 4" Dayton Audio Full range, 8 Ohm: https://www.parts-express.com/dayton-au ... r--295-352
- 2 x Dayton Audio Tweeter, 8 Ohm: https://www.parts-express.com/dayton-au ... r--275-075
- 1 x 8" Peerless Subwoofer: https://www.parts-express.com/peerless- ... --264-1102

- 2.1 Bluetooth Amp: https://www.parts-express.com/21-amplif ... e--320-636

Subwoofer will be facing down and the whole box would be sitting on 2 - 1/16" feet - You can see attached picture for a first-draft box design.

2 QUESTIONS:

1) I am thorn between putting the 4" full range inside a vented box (for F3 = 68 Hz) OR a sealed box (F3 = 144 Hz)? I'm thinking there'll be too much bass considering the sub, but I would appreciate any opinions out there.

2) I was thinking of putting 2 XOs on the midrange / tweeter and running Sub directly from the amp. I don't know how to design a crossover, so was hoping to use a pre-made one. I need advice on what XO to use here.

Any feedback greatly appreciated.

Attachment:
2.1 Speaker System-01.png


Attachment:
2.1 Speaker System-02.png


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PostPosted: 15 Oct 2019, 01:46 
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Joined: 23 Feb 2017, 02:02
Posts: 559
You want to match the sensitivty of the tweeter and the base and cross over at the right point.

If sensitivty is not the same number, then for same volume input either base or tweeter is louder than the norminal volume.
Also look at the graphs.


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