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Stereo Amplifier

5
Product Code: 2136
Exclusive to Kitronik
Teaching Notes
Key Stage 3
The Stereo Audio Amplifier Kit can be used with any Personal Stereo Equipment. Output power: 1W per channel. Supplied with 2 speakers and a pre-made Jack Lead.

Availability: In Stock.

Excl. VAT: $7.628 Incl. VAT: $9.154
  • Buy 5 for $5.797 ($6.957 incl. VAT) each and save 24%
  • Buy 50 for $5.187 ($6.224 incl. VAT) each and save 32%
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This stereo audio amplifier kit can be used with any personal stereo equipment, including MP3 players.

It can be powered by a 9V battery connected to the PP3 clip or you can use a power supply in which case you would need to buy a 2.1mm PCB Mount DC Socket and solder that to wires which you would then in turn solder to the PCB in place of the PP3 jack.

It uses a TDA2822M audio amplifier IC which can output 1W per channel. The kit is supplied with two speakers and a pre-made 3.5mm jack plug.

Features:

  • 1W per channel stereo amplifier.

Contents:

Dimensions:

  • PCB Length: 58mm.
  • PCB Width: 35mm.

Requires:

Resources:

This product is also available in retail packaging making theman idealgift. Click here to view the retail version.

Free samples:

Teachers can order a sample of this kit (one per school) here. You will need to select the kit from a list of all the sample kits; the stock code for this kit is 2136.
Note: this service is only offered to schools for evaluation purposes only.

Buy British:

 This kit is designed and manufactured in the UK by Kitronik.

Physical characteristics:

  • PCB Length: 58mm.
  • PCB Width: 35mm.
  • PCB Component Count: 18.

Electrical characteristics:

  • Voltage Nominal: 9V.
  • Voltage Range: 2V - 15V.
  • Standby Current: 7.5mA.
  • Current Max at Nominal Voltage: 180mA.
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Questions:

Posted by Caroline, Monday, 20 April 2015 on product Stereo Amplifier

Question:

Hi I have both V1 and V2 stereo speakers, and need to know whether the IC's are interchangeable. Also do you have a faultfinder for the V1 as the V2 is the only one I can find on your website. Thanks

Answers:

  • Posted by Michael Lockhart on Monday, 20 April 2015

    Hi Caroline, Firstly the IC for version 1 can’t be used in version 2 and vice-versa. For version 1 you need the TBA820M Audio Amplifier IC and for version 2 you need LM386 Pre-amplifier. Fault finding for version one can be found via the pre-built version 1 model which is still on the website, code 2115B, or by following this link https://www.kitronik.co.uk/pdf/2115_mono_amp_essentials_2_1.pdf

Posted by Annie Shaw, Tuesday, 18 November 2014 on product Stereo Amplifier

Question:

Hi, Is this kit louder than the mono kit with an added speaker? I have a lot of the mono kits but want two speakers instead of one. Also, can a volume control be added?

Answers:

  • Posted by Aaron Sturman on Tuesday, 18 November 2014

    This kit is louder than the mono kit with 2 speakers. Adding a second speaker does very little for increasing the volume with the mono amplifier chip as the power output is limited by the chip it uses.

    This kit uses a more powerful chip that is designed to drive two seperate speakers You can add a volume control system by using a dual swipe potentiometer and connecting one side to the source input signal, the other side to ground and the middle to the input on the PCB. If yo are not sure how to do this or want a neater way of doing it the Deluxe Stereo Amplifier includes a volume knob which saves you this hassle. 

    Alternatively if you want a really nice sounding set of speakers with even more power you may want to take a look at the 3W Amplifier, it has a volume knob, a high quality pair of Visaton speakers and can be run from 3xAA batteries or a 5V power supply (you can use an old mobile phone charger and plug it straight into the micro-usb socket on the PCB!).

Posted by Stephen, Wednesday, 12 November 2014 on product Stereo Amplifier

Question:

Hello, Is it possible to power the 2136 stereo amp project kit using a usb power supply cable like the one used in the USB colour changing lamp kit? Thanks, Stephen

Answers:

  • Posted by Aaron Sturman on Wednesday, 12 November 2014

    Hi, it is possible but you won't get the best performance out of the kit at that voltage. It should be okay up to a moderate volume but you might experience clipping and distortion at full volume. 

    The more powerful 3W Stereo kit works very well from the 5V that the usb power supply cable provides. It also has a built in micro-usb socket so you can use a USB to Micro USB cable without any soldering if you wish.

1 Answer
Posted by dave, Wednesday, 22 October 2014 on product Stereo Amplifier

Question:

is it loud?

Answers:

  • Posted by Aaron Sturman on Wednesday, 22 October 2014
    It's pretty loud at full volume!
Posted by Mel, Monday, 13 October 2014 on product Stereo Amplifier

Question:

Do both speakers have to be housed in one unit or can they be in separated in 2 encasements?

Answers:

  • Posted by Aaron Sturman on Monday, 13 October 2014
    Two enclosures would be fine, if the PCB is going to be in one of the enclosure though it's probably worth deciding which one it will go in before you cut the speaker wire. That way you can cut one short speaker wire and have a longer one for the second enclosure.

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