Pocket 10 watt amplifier

OK , Hi all ..
This my First Project in Instructables ^_^
I am from Indonesia , Here was held 26th SEA Games 2011... GO Indonesia !!!

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Ok check this out ,
This is 10 watt amplifier and LoudSpeaker,
Let me tell you how I make this thing

Part List :
# acrylic
# Loudspeaker
# PCB
# Some Wire
# 9Volt battery Connection 
# Unbalance Jack Female
# Power Jack Female
# Potensiometer
# Capacitor ( 2.2uF ; 470uF ; 100uF ; 0.1uF ; 1000uF )
# Resistor ( 220R ; 2.2R ; 1R )
# IC Tda2003
# Heatsink

Step 1: Build Loudspeaker Box

Tools I use :
# Saw 
# Drill machine
# Melting Glue

I think the result is not bad , 
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...
...
Ok its bad but not really , LOL

Comments

[DMRPUKU]

value of potentio meter ????????????

[Ghild.Zero]

10k

[DMRPUKU]

stil confusin!
nyways how much value does the pot hav?

[Ghild.Zero]

for the value each component you can look at the schematic picture

[DMRPUKU]

man.........i jst created a new account for myself bcuz of ur dis project......i really need help...can i c snaps of d pcb with ol d solderings nd connections..close up...am a 16 year old boy frm india...i need an understandable schematic circuit diagram? can u? help me pls?

[Ghild.Zero]

Here is it , hope can help you :
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https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-prn2/8655_586240588064840_562823952_n.jpg
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https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-frc3/501_586240574731508_970148564_n.jpg

[faziefazie]

beli akrilik yg kaya gitu dimana ya?

[Ghild.Zero]

Acrilicnya saya potong sendiri gan trus nge-lem sendiri juga , hehe...

[xwilkening]

ok, so you said a 12 volt would make this sound better. it sounds interesting but I would need some help, for the power, do you think I could just use a DC wall wart? or would it have to be AC? (sorry if this is confusing, im kind of new to electronics, i've only been working with them for about a year now) and this project seems like a great idea since I love working with speakers and I always get lots of request to build some for people! (i've gotten a request for a mini ipod speaker for $20!)

[NatDaGamer]

Can you please tag which capacitor and resistor are which?? I really want to make this however I can't work out where each resistor and capactior go, and how many of each I need. Good instructable otherwise :)

[Ghild.Zero]

Terima kasih NatDaGamer ^_^

Please check this

[SmoothTroopa]

What resistance potentiometer should i put? 10Kohm or 40Kohm?
Also i seem to have a problem with huge distortions on low volumes. Could it be because of the potentiometer being 10kohm?

[SmoothTroopa]

Nvm solved it. For anyone wondering i had 2 4ohm speakers wired in paralel. I fixed the distortions by connecting them in series.

[klija]

layout is on What?programma

[klija]

layaut is on what programm

[usbg3rd]

Also that what are Cx and Rx for in the datasheet ? there is no description of the circuit do you have any link ?

[usbg3rd]

nice instructable and easy to build too but i have few questions

can someone help me i built it but the output was distorted not too much but it was enough to annoy some one (when the output is at max volume) at lower volume its fine enough.
CONVERSELY
and when i short the capacitor C2(1000uF) the output gets stable and distortion is reduced (at max volume) but gets distorted at lower volume .
strange but true
anyone who has built it can try himself and what is the solution for low distortion at max and min volume simultaneously.

[asmith433]

can you modify it to run on 12 volts or does it need 18 volts because i would like to use it on a robot that only uses 12 volts also what is the maximum wattage it can run

[Ghild.Zero]

12volt supllay is fine ^_^

[asmith433]

what is the largest speaker you can run (:

[dihnen]

I appreciate your modularity, use of standard connectors, power, simplicity, and portability. That is really quite an excellent build.

[Ghild.Zero]

Thx ^_^

[yusv]

wah, joss tenan dap, wong indonesia iso melbu newsletter, HIDUP INDONESIA

[Ghild.Zero]

Saya juga kgk nyangka gan ,, hehehe ^_^

[ag621994]

i have a... maybe stupd question... is it posible to put 2 or more of those in a row?

[Ghild.Zero]

I suggest you to build a stereo amplifier , it is more efective and efesien

[eli241]

hey bro.. can u upload your pcb layout?

[Ghild.Zero]

Yes No Problem
http://www.ziddu.com/download/17590310/10wattamplifier.rar.html

[ksingh18]

i think this is a stupid question but can you tell me where to put the Potensiometer in the circuit?

[Ghild.Zero]

Ok no problem ,
thx for your comment,
here is the design and layout I use
http://www.ziddu.com/download/17590310/10wattamplifier.rar.html

[mposlon]

can i put 2x like that speakers to be lauther..or can I put speaker with 3W 3 ohms?

[Ghild.Zero]

Power Battery (Watt) > Power Amplifier (Watt) > Power Speaker (Watt)

But , Power Amplifier is fixed at 10 Watt so Power Speaker should not be more than 10 Watt

[Seph Cameron]

Wait... haven't you got that in the wrong order? If the amp is putting out 10W max, then your speakers need to have an equal or larger power rating than their input.

Battery power > Amp power < Speaker power
Like that. Because it doesn't matter whether the battery power is higher than the speaker's rating, it's effectively regulated by the amp.

The battery power needs to be higher than the amp power, otherwise you won't get the full 10W. Also, if the amp were fixed at 10W it would be putting out a constant DC current. That doesn't happen. 10W is the maximum rated power you can put through it before you break it.

[luvasu]

Sorry...I miss one data... "I" (amperes). In the case of connecting 18 VDC, appart of the need of a REAL BIG heat sink, and obtain a "near 10W" (probably only 8W), our friend the 2003 will "swallow" near to 3 amperes (I). (Expected NOT to use batteries. )

[Seph Cameron]

Actually it has a stated efficiency of around 70%, meaning that if the output is 10W with an 18V supply, it'll be going through 0.8A max.

[Ghild.Zero]

hmmmm...

I think you are right at "10W is the maximum rated power you can put through it before you break it"...thanks

for battery power, Tda2003 have max Voltage Suplay at 18volt and each IC having different max voltage , u can see it at datasheet...

But I have question, how amplifier can amplify something bigger than itself ???

Thank you for your comment ^_^

[Seph Cameron]

18 volts isn't power though. It's voltage.

The amplifier is amplifying the input signal, not the power from the battery, that'd be impossible. The simplest way of looking at it is that it's a switch, and the trigger is the signal. It's switching the battery power on and off which is used as an output.

And they're not necessarily amplifiers, you can make signals smaller with them too, or keep them the same size. Any signal can go in, within reason.

[iparuk]

It looks like the 100uF and the 100nF capacitor are not realy neccisary sicne you are using batteries. Nice work though.

[luvasu]

100uF, at least, is necessary to maintain a "near constant" drain from the batteries.; as the dynamics of the music calls for instant supply on the TDA2003. The 100nF works here as ripple drain, so, using neat DC (batteries) is not necessary.

[Syncopator]

The maximum continuous power developed in an amplifier's load is given by P = Epp² x 8RL, that is, the square of the voltage across the load multiplied by eight times the load impedance.

The following doesn't take into account the maximum ratings of any particular i.c. or other circuit, which may be lower than these figures.

For a 9V supply, the p-p voltage is, depending on the actual circuit, about 8.
With an 8Ω load that translates to a power of 1W, in a 4Ω load 2W, and in 2Ω 4W.

The arithmetic for a 12V supply gives 1.56W in 8Ω, 3.12W in 2Ω and 6.35W in 2Ω.

With an 18V supply the figures are 4W in 8Ω, 8W in 4Ω and 16W in 2Ω.