DS

The debate of whether or not to install your own surround sound system has fallen on deaf ears and you have decided to tackle this delicate task for yourself. Good for you. The thing is you aren't really too certain about where to actually begin this delicate procedure. At this point, I'm assuming that you have purchased either a home theater kit or surround sound system for your home and are preparing to begin the actual installation process. A good place to start is by reading the instructions and owners manual that most likely came with either the kit you purchased or each of the individual components. The thing to remember with a  surround sound   system is that nothing will work without the speakers and they will only work for their intended purpose if they are positioned properly. However, you need to make sure that the other components are in place before beginning to work with the speakers. I recommend, particularly if this is your first system that you go with a...

For car alarms, emphasis should be put on hearing the audible alert and identifying it as belonging to your 'wheels'. Unfortunately, modern car alarm systems seem to have more or less the same alarm sound especially if they are from the same brand. Also, to comply with legal noise restrictions, the alarm sound is not always loud enough to be heard if the car is parked down the road. Circuit diagram : Simple Car Alarm Sound Booster Circuit Diagram The circuit shown here is designed to help boost the alarm sound by also activating the car's horn(s) when the alarm goes off. lnternally the car alarm system often provides a signal that activates the (optional) engine immobilizer and/or volume (ultrasound) sensors. This signal usually goes Low upon sys-tem triggering and high again when the alarm system is deactivated. The alarm activation signal is fed to the circuit through Dl . When in idle state, T1 's gate is High and consequently the FET conducts,  keeping  power ...

This nifty sound level meter is a perfect one chip replacement for the standard analog meters. It is completely solid state and will never wear out. The whole circuit is based on the LM3915 audio level IC and uses only a few external components. This circuit can also be integrated into audio amp projects.  Circuit Schematic Part Total Qty. Description Substitutions C1 1 2.2uF 25V Electrolytic Capacitor C2, C3 1 0.1uF Ceramic Disc Capacitor R1, R3 2 1K 1/4W Resistor R2 1 10K 1/4W Resistor R4 1 100K 1/4W Resistor R5 1 1M 1/4W Resistor D1 1 1N914 Silicon Diode Q1 1 2N3906 PNP Transistor LED1-LED10 10 Standard LED or LED Array U1 1 LM3915 Audio Level IC MISC 1 Board, Wire, Socket For U1 Notes V+ can be anywhere from 3V to 20V. The input is designed for standard audio line voltage (1V P-P) and has a maximum input voltage of 1.3V. Pin 9 can be disconnected from +V to make the circuit use a moving dot display instead of a bar graph display. Thanks to help from the forum, this circuit has ...

Sight and Sound Metronome Circuit Diagram. Precise, adjustable control of beats per minute from a largo of 18 to a frenzied, high presto of 500, These beats are produced acoustically through a speaker. A light flashes at the same rate. When SW1 is closed, CI begins to charge through Rl and R2. Cl will eventually reach a voltage at which the emitter of unijunction transistor is switched on, `dumping` the energy stored in Cl into an 8 ohm speaker.  To produce a distinct `plop`, brief pulses across T2 secondary drive Q2 into conduction. The extra gain of Q3 and Q4 are sufficient to briefly switch LI on, then o£f; as the pulse wave pas-ses. Capacitor C2 `stretches` the puise slightly to overcome the thermal inertia of the lamp, so that a bright flash occurs,. Sight and Sound Metronome Circuit Diagram

Here are very simple project of Sound VU Meter Circuit Diagram. This circuit is a sound level meter, very simple, but very effective for your sound system or test bench. This type of circuit is also called a VU meter. 'Abbreviation means "unit volume" is used to express that the average value of a music signal over a short period of time. Sound VU Meter Circuit Diagram The VU meter described here is what is called a type "passive". This means that does not require a separate power source, since the power is supplied by an input signal. This makes it easier to use:. Just connect it to the speaker terminals (polarity does not matter) and is ready to use.

Finding the best amplifier for your auto sound system can be a lot easier if you take the time ahead of time to learn what you need and what will work best with the sound system you've selected for your car, truck, or SUV. It helps to understand what an amplifier does in order to purchase the one that will best suit your needs. An amplifier takes a small sound, adds a little boost of its own, and then turns it into a big sound. The more power your amplifier has, the better quality of sound it will provide. An underpowered amplifier will have a thin, tinny sound that is rather unattractive in an auto sound system, or any other sound system for that matter. You should also take care to remember that the power rating of an amplifier is the maximum power it is capable of expending not the amount that it will regularly use. The RMS rating of an amplifier is a good indication of its power output. One thing that is important to remember is that you should never buy an amplifier based on t...

If you're in the market for a new auto sound system you might want to seriously take a moment and consider whether or not you would be benefited by subscribing to either Sirius or XM Satellite Radio. Both of these subscription-based services have something wonderful to offer their subscribers and both of them require specialized equipment in order to operate. This means if you are going to wish to use either service, you will need to have decided which service before you have your auto sound system installed. It really doesn't matter which of these you choose they each have different features that will appeal to a wide variety of audiences. You will find some wonderful competition among the two not only by way of music radio but also talk radio. If you really love talk radio you really need to subscribe to one of these in order to find a treasure chest of talk radio gems. You will find everything from the mundane to the controversial. From Oprah to Howard Stern exist in the rea...

Simple Sound Activated Switch Circuit diagram : Control by sound may be very useful,  not just on a robot but also for a bit  of home automation, for example a  sound activated light responding to a  knock on the door or a hand clap. The  light will be automatically switched  off after a few seconds. An alternative  use is burglar protection — if someone  wants to open the door or break some-thing the light will come on, suggesting  that someone’s at home. The circuit can work from any 5– 12 VDC regulated power supply pro-vided a relay with the suitable coil voltage is used.   Simple Sound Activated Switch Circuit diagram :   Sound Activated Switch Circuit Diagram When you first connect the supply  voltage to the circuit, the relay will  be energised because of the effect of capacitor C2. Allow a few seconds for  the relay to be switched off. You can  increase or decrease the ‘on’ period  by changing the va...

We live in a world where music is our constant companion. We take it with us to the beach, to work, to exercise, even while riding bikes or talking on our cell phones. It only makes sense that in our cars we would like to have the best possible auto sound systems our hard earned dollars can buy. The problem is that new technology is being introduced to the market each and every day and many of us feel as though if we hold our breath just a little bit longer something even better and more spectacular will come along. We know that we will absolutely want to kick ourselves if we buy in to "this or that" company's auto sound system that was phenomenal yesterday, just before the next great thing hits the market. The truth is that superior auto sound system technology exists already and the question isn't if it will hit the market but rather when. And when seems to be a pretty big question when it comes to emerging technologies. There are always so many things that control ...

If you are in the market for a surround sound system I'm sure you are trying to learn as much as possible about options before you reach the buying stage. One thing to keep in mind is that there are many options and most of them will come down to a matter of taste when all is said and done. There is no right or wrong component or process when it comes to buying a surround sound system only what does and doesn't work for you and the space you have available. You will find throughout the process that there are many parts, pieces, and components that you may purchase for your surround sound system and even more prices for those individual items. Ultimately the decision comes down to how much of a sound snob you are. Seriously. I must admit that my personal preference is for the most possible sound saturation and the most realistic possible sound as possible. For this reason I am more interested in buying the components as individuals rather than a simple AV receiver. This does no...

The auto sound systems of today are much more involved and complicated than the simple car stereo and speakers of years long past. Today's sound systems have all kinds of bells and whistles that many us could have only imagined during our younger years. In fact, it is quite possible that many of us did imagine these and those imaginings are how they came to be. One thing you need to do before you even begin to put the auto sound system of your dreams together is learn what kinds of components exist, how they work together, and which ones you really think you need as part of your auto sound system and which components you honestly feel you can live without. Life is about compromise and most of us will readily admit that we are quite unlikely to ever use all the bells, whistles, and upgrades that are made available to us within our lifetimes. I don't know about you, but my cell phone has features I've never even gotten around to learning how to use. I know I can use them and...

If you are one of the many people around the world who happens to be into cars and the new pastime called 'modding' I'm sure you have considered the implications of modding your auto sound system. For many the idea of modifying an automobile is very exciting. It's a way to take the standard canvas purchased from the dealer and turn it into a work of art that you drive to work and play each and every day. The same theory holds for your sound system as well. You can take the basic pieces and parts and turn them into something so much more than they were to begin with. If that isn't enough you can purchase all kinds of LED lights and other nifty gadgets that glow and go along with your car while dancing to the beat. If you want to make a splash driving down any boulevard, this is definitely one way to not only be seen but also leave a lasting impression. Your creative genius with your auto sound system will cause quite a stir and give plenty of people much to discuss t...

This is a Relay activated by Sound Circuit Diagram . Generally a circuit has a basic function, but according to our needs can modify or add to a circuit making it more complex. This circuit is a relay activated by sound, which can be used in an alarm system, home automation, robot and even in an Arduino. Undoubtedly this control by sound can be very useful, an example is a light activated by the sound of a knock on the door or a round of applause. The light turns off automatically after a few seconds. An alternative is to use protection against theft - if someone wants to open the door or break something light illuminates, indicating that someone is home. The circuit can work with any voltage 5-12 Vdc, it depends on the voltage of the relay coil. Relay activated by Sound Circuit Diagram