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High Power Amp Kit (PCB & Components)

12
Exclusive to Kitronik
Teaching Notes
Key Stage 4
The High Power Amp Kit can output up to 15W per channel. It includes all of the components required to build the PCB. PSU, speakers and cable are not included.

Availability: In Stock.

Code1+ 5+ 50+
2143K£12.00
(£14.40 incl VAT)
£10.50
(£12.60 incl VAT)
£9.50
(£11.40 incl VAT)
OR

This amplifier kit can output up to 15W per channel into a pair of high quality speakers. The kit is capable of producing a very loud, high quality stereo sound. The product includes all the components required to build the PCB, but not a power supply, speakers or cable to connect it to audio equipment. A complete version with the speakers, power supply and audio cable is available as a complete kit.

It features a power LED, on / off switch and volume control.

This kit includes:

  • 1 x Printed circuit board
  • 1 x TDA7297 audio amplifier IC
  • 1 x Heat sink
  • 1 x M3 nut and bolt
  • 1 x 10Kohm dual potentiometer
  • 2 x 47Kohm resistors
  • 1 x 1Kohm resistor
  • 1 x 1N5400 diode
  • 1 x Blue LED
  • 1 x 470uF capacitor, electrolytic
  • 1 x 10uF capacitor, electrolytic
  • 1 x 100nF capacitor, ceramic disc
  • 2 x 220nF capacitor, ceramic disc
  • 1 x Right angle PCB mounting power switch (high current)
  • 3 x Two way terminal blocks
  • 1 x Panel mounting DC power socket

PCB dimensions: 77.5mm x 59mm. Four mounting points are available, one in each corner.

This kit requires soldering.

Click here to download the essential information pdf_icon.gif

Click here to download the full teaching resources pdf_icon.gif

Note: The heat sink will become hot when the amplifier is used at a high volume for long periods of time. For the heat sink to work at its best it should be mounted in a well ventilated case.

You may also wish to buy some of the following items: (if you are buying all of them then it will be cheaper to buy the version with all the parts)

Buy British:

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

Questions:

Posted by Odiel De Potter, Friday, 9 December 2016 on product High Power Amp Kit (PCB & Components)

Question:

Hi, I was wondering if it is possible to use this kit as an amplifier for my guitar.

Answers:

  • Posted by Michael Lockhart on Friday, 9 December 2016

    Hi Odiel, Yes it should be fine to connect this kit straight up as a guitar amplifier as it has a built in volume control on the board.

Posted by R Hedge, Monday, 24 October 2016 on product High Power Amp Kit (PCB & Components)

Question:

I have bought two of these kits previously and they are fantastic. I have made them both into lead acid powered portable amps for my youth group and my son. They have been great for the past couple of years. I plug a CD player or MP3 player into the boards. Recently there seems to be an issue with the sound cutting out or distorted at higher volumes. A bit like when you used to 'blow' your speakers on old HiFi systems. The speakers though I think are OK so I reckon I have managed to damage one of the components perhaps by inputting at too higher a volume. Is this possible? I will happily buy the kits again but just want to know if it is possible to damage the IC/ciruitry. I will be more careful next time!

Answers:

  • Posted by Rob Haywood on Monday, 24 October 2016

    Hi,

    It is unlikely through normal use to do that. I have emailed you to ask you for some more information to see if we can get to the bottom of it for you.

Posted by Les Hanna, Monday, 1 August 2016 on product High Power Amp Kit (PCB & Components)

Question:

Can the two channels be 'bridged' to create a 30W mono amplifier? How would this be achieved? Would there be any limitations or potential problems with this? Thanks

Answers:

  • Posted by Michael Lockhart on Monday, 1 August 2016

    Hi Les, although it is technically possible to do this we highly recommend not doing it as if it is wired up incorrectly it can cause serious damage to both the speaker and amplifier kit. This is due to the voltage that each channel will try and output too, if one goes slightly higher than the other they will constantly try to match the voltage and as such can force the voltage passed the maximum point as they are in constant conflict.

Posted by Robert Walker, Tuesday, 14 June 2016 on product High Power Amp Kit (PCB & Components)

Question:

For the above kit, what the is the biggest Watts speaker which it can be most efficient on? If it's pointless putting a 50watt speaker in this PCB, is there a PCB which can have a 100 watt and above? Thanks

Answers:

  • Posted by Michael Lockhart on Tuesday, 14 June 2016

    This is the most powerful speaker kit that we make, it can output 15W per channel. As such a 20W speaker would be idea for this, anything over this would be fine but you wouldn’t get the most from the kit. Unfortunately we don’t have an amp kit that can output any more than this.

Posted by Boyd, Friday, 4 March 2016 on product High Power Amp Kit (PCB & Components)

Question:

Is it possible to have this running as a 2.1 speaker setup? Or how well does it run does like this?

Answers:

  • Posted by Michael Lockhart on Friday, 4 March 2016

    It would be difficult to obtain the setup you are looking to create. It would be easier to use 2 woofers and 2 tweeters connected to 2 crossovers, one tweeter 1 woofer one each crossover. This link shows how this can be connected, https://www.kitronik.co.uk/blog/use-2-way-passive-crossover/  

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