Speaker Definition and 122 Threads

Does anyone know where I can find a flat tiny speaker, let's say for arguments sake roughly the size of a quarter, that can produce a reasonably loud audible tone? Thanks! Ted

I am looking for equations which would describe sound that a speaker produces. If I understood the principle how a speaker works correctly, there are a permanent magnet and an electromagnet. As alternate current flows trough a wire, the poles of electromagent constantly swich places. When...

Homework Statement Hey guys...I'm helping my girlfriend again, in her intro physics. We never went over this stuff, in my more advance physics. Her question is this: What would a speaker do the instant a low-voltage battery is connected to it? Homework Equations The Attempt at a Solution I...

Our teacher wants us to construct a speaker that can provide sound (that can be heard from anywhere within the classroom) when connected to wires that are hooked up to some sort of device. I'm unsure of where to start and where to get the supplies. Since we are on the magnetism course, I know...

Hi all, I have some HW that I am really having some trouble with, since the professor didn't really explain how to do the problem in class, and there is no textbook for this class (Loudspeaker and Sound System Design). This is the homework, and any help and explanation of how I should go...

Building a Speaker...New member ok, well firstly let me introduce myself; I am a new member here, I am by no means a physics/engineering person...but I got myself stuck in grade 12 physics and I am almost through the semester. Now we've got this assignment to build a speaker or headphones from...

i thought of a design of a motionless speaker, it consisted of a LARGE[I] electromanget that when charged, would attract atoms in the air toward the magnet. then immediatly after that, change the polarity of the magnet and therefore repelling the atoms. repeating this motion would creat...

Hi anyone, I'm doing my final year project requires to use audio speaker. I need to know the two parameters for my transfer function. They are spring constant and the damping coefficient of the speaker flexure. Can anyone give me some idea? Best Regards, Ivan

my theory may be sloppy and wrong - but here it goes when people start talking about speakers and their enclosures there are generally two types used, ported and sealed. sealed being just that, and airtight box with a speaker in it. but a ported box is far from air tight instead they put a...

i am a bit confused as to where to start on this problem, any hint will be appreciated.(problem attached)

a zobel network consisting of a capacitor C and resistance Rc is connected in parallel to a speaker of inductance L and resistance Rl.show that frequency at resonance =1/2pi*Sq rt 1/LC(Rlsquare-L/C ÷ Rc square-L/C) i have begun by equating the reactive components of the branch currents...

Hello, I'd need a help of a Greek speaker in translation of a document. Anyone who's willing to help, please write. I can't offer any money for that nor a great prize. The only thing I'd be able to give is a huge 'thanks'. The document is six pages long, but now written in prose.

Hello all, I have another sound question: "If louder sounds have bigger compression waves, what does a speaker have to do in order to create louder sound?" Ok, so a speaker creates a sound wave by generating regions of high and low pressure. It is these regions of high pressure and low...

I love it when they combine chapters. :smile: OK, here is the question: A Block witha speaker bolted to it is connected to a spring having spring constant k = 20.0 N/m. the total mass of the block and speaker is 5.0 kgk, and the amplitude of the unit's motion is 0.500 m. If the speaker...

A speaker at the front of a room and an identical speaker at the rear of the room are being driven by the same oscillator at 464 Hz. A student walks at a uniform rate of 1.67 m/s along the length of the room. How many beats does the student hear per second? I have gotten this far its just i...

i just purchased this PA speaker and am building the amp from a kit to power it. the question i have though is about mounting the speaker. i am going to mount it on my collision bar directly behind my grill. since it is directly behind the grill... if it rains, it will obviously get wet. i...

A block with a speaker bolted to it is connected to a spring having spring constant k = 21.0 N/m, as in Figure P17.40. The total mass of the block and speaker is 46.00 kg, and the amplitude of this unit's motion is 0.475 m. Assume that the speed of sound is 343 m/s. Figure P17.40...

I figure electric guitar playing physics people might know how to answer this. Can speaker rounding be achieved at lower volume levels, without going to a low power amp? I have a 60 watt combo with one 12" speaker rated at 70 watts. It can get pretty loud when I try to get that nice...

Any tips for the WORST public speaker in the world? Why, just today I had to get up in the front of a class and speak on a "mysterious" subject, I started and then looked into the wave of staring faces and my words just got garbled.. Weird sounds, misplaced words, came flowing out of my mouth...

I am looking for a speaker that is roughly 1-5 mm in size. Are speakers made this small? I looked on google but could only find speakers around 25mm in diameter. Any help would be greatly appreciated.

Anyone care to enlighten?

Did anyone see this joker - Rep. Dennis Hastert, (R-Ill.), Speaker of the House - on Meet the Press this morning? Holy snake oil salesman Batman! http://www.msnbc.msn.com/id/5640412/