Home » Sponsored » Pi Speakers » Mr. Wayne, about Qms??
Mr. Wayne, about Qms?? [message #42119] Wed, 06 August 2003 20:29 Go to next message
Gabriel is currently offline  Gabriel
Messages: 32
Registered: May 2009
Baron
I have search in this previous posted forum, and you have explain that the larger Qms of the driver, will sound more muddy. How large the ideal Qms for a bass guitar speaker?
Thank's in advance.

Regards,
Gabriel

Qms, Qes and Qts [message #42121 is a reply to message #42119] Wed, 06 August 2003 22:35 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18787
Registered: January 2001
Illuminati (33rd Degree)

Qms is a figure of merit for the mechanical damping of the speaker, Qes is the figure for the electrical damping and Qts is their combined total. If the diaphragm is heavy and the motor is weak, then Qts will be high. When the cone is made very heavy to lower its resonant frequency then the motor must be made stronger to compensate. If the motor is powerful enough to control the mass and the amplifier can handle the back-EMF produced, then the system as a whole will not sound "muddy." But there is a limit to how much a motor can do, and there comes a point where extension is gained at the expense of control.

You might be interested in the thread called "Motors," which was a recent discussion about Qms, Qes and Qts.

Thank's [message #42126 is a reply to message #42121] Thu, 07 August 2003 03:48 Go to previous message
Gabriel is currently offline  Gabriel
Messages: 32
Registered: May 2009
Baron
Thank's Wayne. That article is give me an understanding.

Regards,
Gabriel.

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