"Myths"

[chris229 10+ year member]

guys ---------the gain controls the GAIN---------- not the output voltage. though you will see a loss of power[voltage] if your gains are set to low. gains should be set for a 3/1 overlap ..... if the last processor is puting out 6V RMS clean--- then you'd set the amp for 2V

 

[jlaine 10+ year member]

Originally posted by chris229 guys ---------the gain controls the GAIN---------- not the output voltage. though you will see a loss of power[voltage] if your gains are set to low. gains should be set for a 3/1 overlap ..... if the last processor is puting out 6V RMS clean--- then you'd set the amp for 2V

No chris, you are missing the point.

Think about what you are saying here, you just disagreed then agreed with me, without even knowing it...

Gains, what do you do when you gain something? Increase it? What are you increasing? Voltage! Decrease it? What are you decreasing? Voltage!

The gain controls the amplifier output, which is the output voltage. The gain structure is designed to match a maximum input to the output of the amplifier, and control that specific amplifiers maximum output voltage given the relative input signal.

Given a constant AC 60hz line level signal, you run it to the amplifier, and modify the control, what are you doing again?

Modifying the output voltage............

Gains are voltage controls... No two ways around it.

Input signal will be modified (amplified) by X volts when gain is set at Y position. Gains = voltage controls. No matter where you set it, it will always be increasing the voltage by a certain amount, that is how amplifers are designed....

 

[Corsica 5,000+ posts]

now all u people have me maddly confused. I need explanations here slowly cause i failed Physics last year. Explain all this. How does a speaker die, how gains effect amps, ohms law, watts/volts, Amps, etc. I am now more confused than ever and really wanna learn this stuff, but i am a lil slow so can somebody dumbt hsi down for me???

 

[ramos 5,000+ posts]

I'll give Ohm's law a try. Ohm's law is really difficult to "dumb down" though.

Ohm's law consists of two base formula.

BASE FORMULAS 1.P=I*V 2.V=I*R

P = Power in Watts

V= Electromotive Force in Volts

I = Electrical Current in Amps

R = Electrical Resistance in Ohms

SQR = Square Root

So....

P=I*V means power (watts) equals current (amps) multiplied by Voltage (volts)

V=I*R means Voltage (volts) equals Current (amps) multiplied by Resistance (ohms)

If we know any two of the four ( voltage, current, power, or resistance) we can figure out the others. Using the following formula's

TO FIND VOLTAGE V=P/I V=I*R V=SQR(P*R)

TO FIND CURRENT I=P/V I=V/R I=SQR(P/R)

TO FIND POWER P=I*V P=V^2/R P=I^2*R

TO FIND RESISTANCE R=V^2/P R=V/I R=P/I^2

Now with all that being said. It really breaks down into a couple of somewhat simple truths.

1) More Voltage equals more Current

2) More Resistance Equals Less Current

I don't know if all of this helped or hindered. But you can really learn alot more by checking out this site http://www.eatel.net/~amptech/elecdisc/caraudio.htm

It's been a while since I have used the ole noggin //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif So be gentle if something is incorrect //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Corsica 5,000+ posts]

Okay can make more sence here .Does P=I*V mean if i increase the ampunt of volts running to my amplifier i will get more watts? Also how do u figure in current drop? i know bigger wire carries power more efficently which is why u see 4 awg and 2 awg wire used commenly. Also how does a coil move? Is there a way for the average Joe to re-coil a subs?

J

 

[Corsica 5,000+ posts]

Ne one got answers??

J

 

[chris229 10+ year member]

Originally posted by Corsica Okay can make more sence here .Does P=I*V mean if i increase the ampunt of volts running to my amplifier i will get more watts?

yea to a point in a unregulated amp

Also how do u figure in current drop? i know bigger wire carries power more efficently which is why u see 4 awg and 2 awg wire used commenly.

resistance of wire x current flowing =volts droped for a DC design. The REAL resistance for an amp is different because the amp is a switching AC load.

Also how does a coil move?

simple electromagnetic----the speakers basket mounted magnet will attract or repell the coil depending on the direction of current flow in the coil

Is there a way for the average Joe to re-coil a subs?

no they are machine done

 

[jlaine 10+ year member]

Originally posted by chris229 no they are machine done

You can field repair most subwoofers with a recone kit. Patience and alignment is the key, but it is most definitely user repairable.

 

[chris229 10+ year member]

Originally posted by jlaine You can field repair most subwoofers with a recone kit. Patience and alignment is the key, but it is most definitely user repairable.

recoil was the Q---- coning is a total replacement cone with a new coil. ------ or maybe I just some how though he was asking if you can hand wrap a coil with wire

 

[Corsica 5,000+ posts]

Naw man u misunderstood me, i knew it couldn't be done by hand but then again i also asked an open ended question.I am really wanting to work for a speaker company. Does anyone have a job @ like Kicker, MmAts, Orion, or naything? I'd like to do an "internship" or soemthing for the summer so i can learn some od the ins and outs of the business.

J