Test Equipment for car audio - by Eddie
B&K and HP Audio Audio Oscillators, These are capable of making sine waves
for testing of audio products. I usually use them for testing loudspeaker boxes.
Every shop should have one of these, even a cheap one works fine and is better N
nothing. They allow you to make a steady tone and helps when looking for speaker
box leaks and strange rattles. Also for finding the resonance of speakers,
speaker boxes or your car. Also useful for finding your own T/S parameters.
Check on Ebay there are always lots of these
things for sale cheap!
Distortion analyzers, useful in measuring amplifiers output power. Both the
Sound Technology and the HP pieces here also have very accurate and very
sensitive voltmeters on them. I bought one of these at a ham radio tailgate sale
and the other one in a pawn shop..
Volt meters, a very useful tool... Both these pictured are Flukes, the
model 27 on the right is my favorite and they are pretty cheap new, and cheaper
at the pawn shops or on EBAY. The meter on the left is our bench meter
capable of super accurate measurements and a much more expensive meter.
Oscilloscope, everyone needs a scope, it allows you to actually see a visual
representation of the music or test signal right on the CRT screen! With it you
can see an amplifier clip! And allot of other stuff including the complete
This is a Fluke digital volt meter AND digital oscilloscope in one! It also has
a built in audio oscillator but it only has one output frequency, I prefer the
variable oscillators but this might help in a pinch. And since it is battery
powered I can use the scope in a car out in the parking lot when I need to.
CB/two way radio test gear.
Frequency counter, tells you the exact frequency, this one is for two way radio
but I also have one for measuring audio frequencies (sound)...
RTA and SPL meter! Both useful for seeing sound levels in your listening
environment. Couldn't live without them!
|Magnifying glass! Look closely at circuit
boards when the gear doesn't work, you might see the problem and avoid an
expensive trip to the repair man!
indispensable for me! I have a set of alligator clips I can plug the headphones
into and clip onto amplifiers in cars, so I can hear the amplifier outputs while
working on the vehicle. Very good for hunting alternator noises!!!!