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3 votes
Accepted

How does a cardboard paper towel roll amplify the sound?

Quite an interesting project indeed. The paper towel roll and cups are are working as an acoustic megaphone, also called (in ancient times) speaking trumpet. Directional focus of the radiating sound ...
José David's user avatar
3 votes

What makes low quality speakers become distorted when at high volume?

There are a number of factors involved here but mainly frequency response, transient response, signal to noise ratio (S/N) and total harmonic distortion (THD). Frequency response is largely dependent ...
Schizomorph's user avatar
  • 1,573
2 votes

What makes low quality speakers become distorted when at high volume?

Schizomorph makes a solid answer for all the technical details, but I'm going to break it down more basically. Sound consists of pressure changes. A speaker makes sound by moving a diaphragm that ...
AJ Henderson's user avatar
  • 8,182
2 votes
Accepted

Speaker fabric cloth

Traditionally, it was called "grille-cloth" and it was made from a coarse-weave of rather thick plastic filaments. It is still available in many places, particularly those vendors who supply people ...
Richard Crowley's user avatar
2 votes

How do loud speaker manufacturers achieve frequency response ranges as low as 20Hz for its speakers and headphones?

Engineering. Speaker manufacturers have research and development departments staffed with engineers that spend a lot of time to develop crossovers (capacitors,resistors and coils) in conjunction ...
Alaska Man's user avatar
1 vote
Accepted

Are transmission line enclosures only good for subwoofers?

There is long history of Transmission line speakers. Are transmission line enclosures only good for subwoofers? No, They excel at bass but most are full range speakers. I have a nice pair of DCM ...
Alaska Man's user avatar
1 vote
Accepted

Combining speaker drivers due to damaged component

It's possible, but requires expertise. You need the specifications for all of the speaker components. Then you can build a passive filter that combines a woofer and tweeter, plus a new enclosure that'...
Hobbes's user avatar
  • 1,728
1 vote

Advice on Building a Portable foley stage/pit

Foley 'pits' are usually used for the footsteps part of the foley process. Consequently each 'pit' will contain a different 'surface' to be used for footsteps. Unfortunately some surfaces will be ...
Mark's user avatar
  • 8,900
1 vote

What makes low quality speakers become distorted when at high volume?

Where as the other answers talk about technical measurements, they don't actual answer why sounds distort on speakers. This happens because of physical deformation of the cone, as well as travel ...
Scorb's user avatar
  • 674
1 vote

Splitting mono RCA plug to stereo

Yes, you can shunt (short-circuit) the two signal conductors of the stereo cable and connect the output from the VCR to that cable with fear of damaging your equipment. This is a common quick fix for ...
José David's user avatar
1 vote

How does a cardboard paper towel roll amplify the sound?

Pitch content that roughly matches the resonance tendencies of the shape will also get a boost relative to the other frequency content. The resonance frequencies of the tube are probably very limited, ...
Phil Freihofner's user avatar
1 vote
Accepted

How can I change bass reflex tube from 80mm to 75mm?

It is no practical problem to use a 75mm diameter instead of 80mm. It could even be that you have the correct size already, as (for the loudspeaker as such) it is the inner diameter that is relevant. ...
waterdrinkingman's user avatar

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