The 5 most important parameters of a Speaker

Understanding the characteristics of a car speaker is of paramount importance when setting up an automotive sound project. It is based on these characteristics that we will know more precisely the power and frequencies that the speaker will be able to convert into audio through its structure.

In this post we will cover the 5 most important parameters of a speaker explaining in detail what is the function of each one so that you understand a little more about the functioning of a speaker and do not choose the wrong model for your project.

1 - Power:

As it couldn't be different, the power is one of the most important parameters when choosing your speaker, after all, nobody would buy a speaker without first knowing its power, right? Power is measured in Watts RMS and is nothing more than electrical energy transformed into sound waves.

Mistakenly, many enthusiasts and even manufacturers give the power information in PMPO which is completely erroneous since the PMPO power can be a value far beyond the real power (RMS) of a speaker. Therefore, never take power into account in PMPO, but in RMS.

2 - Frequency Response:

Every speaker has an operating frequency range. This name is called the frequency response. In the case of woofers and subwoofers , as they are large speakers, their function is to emit low frequencies (sub-bass, bass and in some woofers, medium-low).

The drivers emit medium-low frequency, medium-high and in some cases even treble. And super-tweeters only emit high, high frequencies. If we look at any manual, the frequency response has two values ​​measured in Hz (Hertz), initial range and final range of response.

These are the values ​​that the speaker can emit at the minimum and maximum frequencies respectively. For example, if a speaker's manual says that the frequency response is 50Hz to 1000Hz (or 1kHz), it means that the lowest frequency it emits is 50 Hertz and the highest frequency is 1000 Hertz.

3 - Sensitivity:

Sensitivity is a measure of the electrical signal sent to the speaker and the sound pressure that was obtained from that signal. Most manufacturers do the tests with 1 Watt of power at 1 meter of distance through a pink noise (very similar to the “hiss” that TV's make when there is no signal). This measure is called decibel (dB).

If you look at the speaker manual, it will be there as follows: Sensitivity 1W @ 1m: 94dB SPL. This means that your speaker propagates 94 decibels with 1 Watt of power at a distance of 1 meter.

For comparison, a normal conversation between two people emits a sound power around 60 dB or a rock show that emits something between 120 dB. We warn you that it is not recommended to be exposed to frequencies above 85 dB (mainly at high frequencies) as it can cause serious damage to the ear.

4 - Impedance:

As we previously explained in another post ( see here ) impedance is the sum of the 3 resistors [electrical (coil), magnetic (interaction between the coil and the speaker magnet) and mechanical (spider and cone suspension)] that a speaker faces when it receives the electrical signal from the amplifier.

The unit of measurement to represent the impedance is the word Ohm (symbol: Ω) which is the unit that measures the electrical resistance of a conductor or resistor standardized by the SI (International System of Units).

5 - Resonance frequency:

As we saw in item 2, each speaker has a frequency range in which it operates. Depending on the speaker, the efficiency of emitting a given frequency may be greater than another. This is called the resonance frequency, that is, it is the frequency that the loudspeaker emits most efficiently (highest response).

THE BEST TIRE FOR YOUR SPORTS CAR

When we talk about high quality tires, ultra performance and technology, we don't even have to say that Pirelli is a reference brand in these aspects because it automatically comes to the mind of those who love and understand cars, right?

Pirelli is synonymous with innovation in the automotive sector, without neglecting the tradition of a company consolidated in the market for over one hundred years.

This is because Pirelli invests a lot in these aspects to provide more comfort, safety and quality for its customers and this is a differential of the Italian company that has been operating in Brazil for over eighty years.

However, today our blog will talk about a special tire for you who have sports cars or who just love this model and want to buy one: the pirelli phantom tire . This tire is a great option for those who like to invest in the personalization of the car, making it even more beautiful and exclusive, since this model is the favorite among sports vehicle owners.

The modern and bold design of the Phantom is due to the design of the directional tread pattern being in V, which ends up making the tire even more aesthetically beautiful and further improving its performance. 

These tires are among the best sellers in the city and present extremely high 

performance both on dry and wet roads, in addition to providing extreme comfort to the driver and his passengers and having great durability. For more insights jump to: subaru tires

Find your pirelli phantom tire

At Gilson Pneus you can check the entire Pirelli Tire catalog to choose your preferred model and we have countless varieties of sizes of the pirelli phantom tire at the best price on the market. We are an official dealer of Pirelli tires and that is why we are able to guarantee a fair price for our consumer. Visit one of our stores and go out with the best tires for your sports car to be even more personalized and with a different design!

How to put tweezers to start the car?

If you discover yourself in need of  starting a car with calipers , you must get it done correctly. Otherwise, your car or truck could be damaged in some way. Through this post we show you how to use jump leads.

How should starter pliers be utilized?

As this last alternative is the most used, we shall focus on how to use starter pliers correctly to avoid problems. Don't forget that people are "playing" with something as serious as electricity and that misuse may have consequences for the vehicle's electronics.

Before using the start pliers:

·         Logically, before using the tweezers you must have previously purchased them. When buying them, you must take into consideration the section and length of the cable and the grade of the calipers, in addition to the displacement and power of one's car. This is very important, since, as an example, the starter cables for a 2,000 cc passenger car are different from those used for a 3,000 cc car. If you have any questions, let yourself be advised by professionals.

·         Next, you will need to arrange them to ensure that another driver –whom, from now on, we shall call donor or auxiliary– will help you start your car or truck through theirs. And then check that the batteries of both vehicles have exactly the same voltage. Concerning the amperage, the donor battery must be of equal or greater intensity.

·         Next, you must bring one car closer to another, so that there surely is the shortest possible distance between the batteries but with no vehicles touching each other.

·         At this time, before placing the calipers you will need to check that the contact of both cars is off. Also, make sure that the lights, audio equipment, heating, etc. are not working. And as a safety measure, it's advisable to use the handbrake of both cars.

Keeping of starter clamps:

·         If you should be unfamiliar with the starter clamps, you might find they have two different colored cables: one red and another black: the foremost is the positive (+) and the second reason is the negative (-).

·         Well, you've to connect the clamps to the terminals as follows. First, you've to clip among the red cable to the positive terminal of the donor's battery and another to the positive terminal of one's car's battery. And then, you must connect one clamp of the black cable to the negative terminal of the auxiliary vehicle battery and another to a steel part of one's car's engine compartment - not the battery. In this regard, some vehicles have a certain terminal for this function. 

How to perform the battery jumper:

·         Once it has been verified that the clamps are well connected and will not come loose from the terminals, the auxiliary driver must start the engine of the donor car and press the accelerator before the needle of the rev counter reaches the 2,000 rpm mark.

·         While another driver keeps your car's engine revving, you must start yours with the gear lever in neutral and depressing the clutch - assuming you've a  manual car  ;.

·         If you obtain your car or truck to begin initially, bingo! But if not, don't despair. Take your time. Wait a minute or two and try again. 

We remove the clamps and end of the operation!

·         If your car or truck has begun, the donor car driver must stop accelerating. Keep both vehicles idling and be ready to get rid of the clamps from the terminals.

·         This operation must certanly be carried out in reverse of the way the clamps were placed. First, the clamps is going to be removed from the negative poles of your car or truck and the donor, and then the ones that are connected to the positive terminals. To know more, check out: jump starters for cars

·         To make sure that your vehicle's battery recovers its charge, it's advisable to produce a journey around 20 or 30 minutes.

·         Whether your car or truck starts, we recommend that you bring it to a  trusted workshop  for professional inspection. They will check the condition of the battery and the alternator and see if there are “parasitic consumptions” that cause it to discharge.