How Do Multi-Driver Speaker Systems Achieve Full Spectrum Sound?

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Homework Help Overview

The original poster is researching how multi-driver speaker systems reproduce the full spectrum of sound, specifically inquiring about relevant equations for describing frequency and the handling of ultra high and low frequencies.

Discussion Character

  • Exploratory, Conceptual clarification, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the role of crossovers in separating frequency bands and optimizing speaker performance. Questions arise about equations related to maximum frequency and the effectiveness of full-range drivers versus systems with dedicated subwoofers and tweeters.

Discussion Status

Some participants have provided guidance on researching speaker design and crossover networks, suggesting resources for further exploration. Multiple interpretations of speaker performance and design considerations are being explored.

Contextual Notes

Participants note the complexity of loudspeaker design and the need for a foundational understanding before advancing in the topic. There is an acknowledgment of the potential confusion surrounding the subject matter.

brown_matt
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Homework Statement


For my physics coursework I am researching how multi driver speaker systems try to reproduce the full spectrum of sound, do you know any equations that will help me to describe frequency, and how ultra high and low frequencies can be reached?
Regards,
Matt

Homework Equations


Need to know


The Attempt at a Solution


Unable to do without relevant equations
 
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Do you know anything at all about cross-overs? If not, you should Google that and see what they do in speaker systems.
 


Yes, I've read how they separate the input into different frequency bands. Are there equations that calculate the maximum frequency of a speaker, or am i being too specific?
 


brown_matt said:
Yes, I've read how they separate the input into different frequency bands. Are there equations that calculate the maximum frequency of a speaker, or am i being too specific?
Actually, not specific enough. Crossovers are engineered to optimize the performance of particular arrays of drivers. Bose has done a lot with full-range drivers, but most speaker-designers want to use a range of speakers, and they have to engineer a crossover network that will give the most accurate response with the selected speaker array. Obviously, you don't want to send very low frequencies (long throw) to tiny dome tweeters, and vise versa. A big heavy subwoofer can't reproduce highs accurately.
 


Oh right, so full range drivers won't necessarily produce as good a sound as a crossover with subwoofer and tweeters?
Wavespeed = frequency x wavelength
as the waves will be traveling at 330? high note = short wavelength
Where can i go from here to raise the level of physics?
 


brown_matt said:
Oh right, so full range drivers won't necessarily produce as good a sound as a crossover with subwoofer and tweeters?
Wavespeed = frequency x wavelength
as the waves will be traveling at 330? high note = short wavelength
Where can i go from here to raise the level of physics?
You're going to have to delve into loudspeaker design, which is a very complex subject, then you're going to have to settle on a basic design and see what you can come up with. There are algorithms that can help you.

Here is a web-site describing the design of a speaker system with a passive crossover.

http://sound.westhost.com/lr-passive.htm

Google on "speaker crossover design" and you'll have more information than you can absorb.
 
Last edited by a moderator:


that looks perfect
thank you for your help, hopefully this won't cause too much confusion
 
Last edited:

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