so I purchased a small 10W car audio amplifier PCB setup to be used in a talk box. it uses the TDA2003 IC and i have checked the datasheet for information.
unfortunately in my ignorance i purchased a 8 ohm speaker rated at 40W max. the datasheet only rates the TDA2003 for a maximum of 4 ohm load resistances. and even at highest supply voltages the output power is less than 5W
so at low frequencies the speaker is distorting. in the higher range the response is fine. from what i understand this is because the speaker is not receiving enough power. so i need to increase the output power.
another problem is the company did not give me the schematic for the PCB. so I am looking to use my small knowledge to try to increase the power by using another amplifying stage. I understand I could use a lower impedance speaker but i would rather amplify the signal and use the 8 ohm speaker.
any suggestions on what topology to use between the PCB and speaker to amplify it to proper levels? I was going to use a simple non inverting op amp.
any and all help is appreciated
unfortunately in my ignorance i purchased a 8 ohm speaker rated at 40W max. the datasheet only rates the TDA2003 for a maximum of 4 ohm load resistances. and even at highest supply voltages the output power is less than 5W
so at low frequencies the speaker is distorting. in the higher range the response is fine. from what i understand this is because the speaker is not receiving enough power. so i need to increase the output power.
another problem is the company did not give me the schematic for the PCB. so I am looking to use my small knowledge to try to increase the power by using another amplifying stage. I understand I could use a lower impedance speaker but i would rather amplify the signal and use the 8 ohm speaker.
any suggestions on what topology to use between the PCB and speaker to amplify it to proper levels? I was going to use a simple non inverting op amp.
any and all help is appreciated