First take a look at the speaker driver: take a multimeter, set it to measure resistance and check the driver’s terminals. If you get the reading around 2, 4, 8 or 16 Ohms, then the driver’s coil should be OK. If you don’t get any reading at all (the circuit is open) that...
of course, but don't get carried away or you'll make the cable too short to use comfortably.) After you're done, you might find it helps to rub the wires very (very!) lightly with sandpaper to remove any
Often, the problem is not in the amplifier but in one of the connections between it and either a source or the speakers. Use a continuity tester or a multimeter to check continuity of audio cords going in and out of the amplifier before attempting to open the unit up and look further. ...
I'd like to feed a 50% duty-cycle square waveform (generated by a uC like ATtiny85) in a 20 kHz to 40 kHz linear sweep to this element, but I'm unsure what driving circuitry to use. For classic coil speakers I'd use a series capacitor and an amplifier, but this time the transdu...
A resistance is a DC resistance, which can be measured with an ohmmeter. If there is a capacitor in the signal path we measure nothing. With a voice coil of a speaker we can measure a DC resistance. With a digital multimeter DMM resistances can be measured easily, but we cannot measure...
For two-way Hi-Fi speakers, decreasing a speaker's impedance will change a passive crossover's crossover frequency. Changing out a two-way speaker's 8 ohm bass driver with a 4 ohm will shift the low pass filter's crossover point lower a full octave which will feed the bass driver les...
If you're ever unsure if the solder joint you created is making an electrical connection, you can use a multimeter to test forcontinuity. Holding Headers Against a Board For those that have the dexterity, you can install a row of headers by holding the pins against the board! You can try...
How Do You Check Voltage With a Multimeter? A multimeter is an instrument that can measure voltage, current, resistance and possibly additional parameters. You can also use it to check continuity of cables and check fuses. If you don't know how to use one, read my guide How to Use a ...
How to Hack and Upgrade Your Car, Using CAN Bus: This document is aimed at those unfamiliar with CAN bus or the reverse engineering process, it will cover some very basic and advanced concepts. It is assumed that the reader has moderate programming know
There are several possible reasons why a desktop, laptop, or tablet computer such as aSurface Pro fails to power on, so you must step through a complete troubleshooting procedure like the one we've outlined below.