Need Help w/ Custom Portable Speaker Schematic

[Extra Syrup]

Hi! I'm planning to build a custom portable speaker. I am hand crafting the casing from wood, and I know how I want it to look and operate, but I do not have the knowledge to design the schematic. Is anyone interested in working with me to create the schematic?

To give you an idea, here is the basic premise of the component setup:

There will be four 3 inch speakers housed in a wooden cube. There will be one 3.5mm aux jack. There will be a power switch and an LED light. It will run off of battery power that will also be inside the cube. The type of batteries used are yet to be determined.

It seems like a fairly simple schematic for an experienced person. Anyone interested in lending a hand?

Thanks very much!

 

[Arouse1973]

Hello
One important question, what are the wattage and impedance of the speakers you plan to use?
Thanks
Adam

 

[Extra Syrup]

Hello
One important question, what are the wattage and impedance of the speakers you plan to use?
Thanks
Adam

Hi! It is 8 ohms and 20-30 watts. I was considering this particular speaker, or something like it: http://www.parts-express.com/visaton-sl87wpm-8-33-full-range-speaker-8-ohm--292-590

Thanks for the reply!

 

[Arouse1973]

Now do you want the enjoyment of building a circuit or are you happy to have a module.
Adam

 

[Extra Syrup]

Now do you want the enjoyment of building a circuit or are you happy to have a module.
Adam

I'd definitely like to appreciate building a circuit from start to finish. Plus, whatever I put together has to fit within the 4 to 5 inch cube that will house it. Each speaker will be mounted on each of the 4 sides around the horizon of the cube.

 

[Extra Syrup]

Now do you want the enjoyment of building a circuit or are you happy to have a module.
Adam

Also, I will mostly likely want to use an on/off push button switch.

 

[Arouse1973]

I have used this device before. Remember to leave room for a heat sink.
http://www.st.com/web/en/resource/technical/document/datasheet/CD00276281.pdf
Thanks
Adam

 

[Arouse1973]

Or you can bridge the TDA2005
http://www.st.com/web/en/resource/technical/document/datasheet/CD00000124.pdf
Adam

 

[Extra Syrup]

Or you can bridge the TDA2005
http://www.st.com/web/en/resource/technical/document/datasheet/CD00000124.pdf
Adam

I'm sorry, Adam, but you have lost me with this. I am just looking for help or advice on getting the circuit schematic put together so I can build it myself. I can do basic circuity work, but I am not good at planning the circuit design. I appreciate your assistance so far.

 

[Arouse1973]

The schematic is in the datasheets I sent you with all the other components. I don't quite understand your response.
Thanks
Adam

 

[Bluejets]

You may want to consider that speakers move air and as such, speaker enclosures are usually designed with this is mind.

i.e. the air in the box needs to "vent".

just one example here...... http://www.diyaudioandvideo.com/Calculator/SpeakerBoxEnclosure/

 

[Extra Syrup]

The schematic is in the datasheets I sent you with all the other components. I don't quite understand your response.
Thanks
Adam

I apologize. I do see the various schematics, but none of them seem to exactly match my particular situation. I'm a super noob, so I just need a little more hand holding.

 

[Extra Syrup]

You may want to consider that speakers move air and as such, speaker enclosures are usually designed with this is mind.

i.e. the air in the box needs to "vent".

just one example here...... http://www.diyaudioandvideo.com/Calculator/SpeakerBoxEnclosure/

Good point! I will certainly incorporate this into my design. Thanks!

 

[Arouse1973]

I apologize. I do see the various schematics, but none of them seem to exactly match my particular situation. I'm a super noob, so I just need a little more hand holding.

Please elaborate on your situation? I don't understand.
Thanks
Adam

 

[Extra Syrup]

Please elaborate on your situation? I don't understand.
Thanks
Adam

I'm essentially looking for someone who knows circuitry well enough to put the schematic together based on the components that I know I want to use. Four 3 inch speakers, 1 power switch, an LED (power indicator), and a battery. As to any other components needed to tie all of that together, I look to the expert for the inclusion of those components into the schematic.

If I'm not making sense or this sounds ridiculous, just let me know. Haha

 

[Arouse1973]

Well the main component Martin is the amplifier. You will need those components first and you build the circuit and attach the speakers to the output, being they are the same you could have two parallel lots of two in series giving you 8 Ohms. Although the amplifier can drive much lower impedances I would stick to 8 Ohms.
Adam

 

[Arouse1973]

Sorry I just called you Martin for some reason , I am tired, I am off to bed!
Adam

 

[Martaine2005]

Is this of any use to you?
It's made from readily available modules.

Martin

 

[Extra Syrup]

Well the main component Martin is the amplifier. You will need those components first and you build the circuit and attach the speakers to the output, being they are the same you could have two parallel lots of two in series giving you 8 Ohms. Although the amplifier can drive much lower impedances I would stick to 8 Ohms.
Adam

Thanks for the explanation!

 

[Extra Syrup]

Is this of any use to you?
It's made from readily available modules.

Martin

This helps, thanks for including! I think I'll be leaving out the woofer part since it's just a small portable box that I'm building.