RE: How do amps drive speakers?

Posted by John Elison (A) on September 30, 2024 at 07:41:04

In Reply to: How do amps drive speakers? posted by George S. Roland on September 22, 2024 at 21:39:39:

Any time an electrical current is sent through a speaker's voice coil, it produces a magnetic field in the voice coil. This magnetic field interacts with the magnetic field of the speaker's permanent magnet thereby causing the voice coil to move. Since the power amplifier delivers an alternating electrical signal to the voice coil, it makes the voice coil and speaker diaphragm move in both directions creating sound.

The reason you need a power amplifier is because the electrical signal coming from the preamplifier does not produce enough power to make the speaker play loud enough. Therefore, the power amplifier is designed to increase the power of the electrical signal coming from the preamplifier before it's delivered to the speaker in order to make the music loud.

Happy listening!

This post is made possible by the generous support of people like you and our sponsors:

Follow Ups Full Thread

Topic - How do amps drive speakers? - George S. Roland 21:39:39 09/22/24 (16)

RE: How do amps drive speakers? - seancuster71@gmail.com 15:34:51 10/02/24 (0)

The Physics of how a speaker works is just this statement - kff 17:27:58 10/01/24 (0)

RE: How do amps drive speakers? - John Elison 07:41:04 09/30/24 (0)

RE: How do amps drive speakers? - tomservo 15:34:25 09/26/24 (5)

RE: How do amps drive speakers? - George S. Roland 17:49:57 09/26/24 (1)

RE: How do amps drive speakers? - tomservo 05:46:27 09/27/24 (0)

RE: How do amps drive speakers? - Craiger56 15:50:29 09/26/24 (2)

RE: How do amps drive speakers? - tomservo 17:29:02 09/26/24 (1)

Thank you sir (nt) - Craiger56 10:22:54 09/27/24 (0)

The basic physics for magnetic speakers, whether cones or Magneplanars is - kff 16:44:30 09/23/24 (2)

Right hand rule. nt - G Squared 17:17:22 09/24/24 (1)

This tells you the direction of the movement in or out based on - kff 11:58:26 09/25/24 (0)

RE: How do amps drive speakers? - cawson@onetel.com 03:52:36 09/23/24 (3)

RE: How do amps drive speakers? - Inmate51 07:06:36 09/23/24 (1)

RE: How do amps drive speakers? - cawson@onetel.com 08:30:41 09/23/24 (0)

RE: How do amps drive speakers? - George S. Roland 05:40:37 09/23/24 (0)

Follow Ups

RE: How do amps drive speakers? - John Elison 07:41:04 09/30/24 (0)

RE: How do amps drive speakers?

Post a Message!