What is the FS of a speaker?
What is the FS of a speaker?
Fs. This parameter is the free-air resonant frequency of a speaker. Simply stated, it is the point at which the weight of the moving parts of the speaker becomes balanced with the force of the speaker suspension when in motion.
How do you calculate speaker FS?
The Fs of the speaker in free air has been measured, so simply add a suitable mass to the cone and re-measure the resonant frequency. This becomes Fs¹….1.1 Measuring Re, Fs, Qes, Qms and Qts.
| Mechanical Q | Qms = Fs × √r0 / (Fh – Fl) |
|---|---|
| Total Q | Qts = Qms × Qes / (Qms + Qes) |
What is a speaker’s F3?
F3 is the point at which the output is 3dB lower than in the passband (the range of frequencies over which the product is intended to be used or the range of frequencies where the response is flat).
What is FB and F3?
Fb is the tuning frequency of the box as a system. It is affected by the size of the box, the tune of the port, and the properties of the driver. F3 is the point in the output response curve where the output is 3db down from the baseline.
What is speaker QTS?
Qts is the total Q of the speaker and is derived from an equation where Qes is multiplied by Qms. The result is divided by the sum of the same. This value can be used as a general guideline in selecting the optimal enclosure type. A Qts of 0.4 or below indicates a speaker well-suited to a vented enclosure.
What is PE of speaker?
Pe: This is the thermal capacity of the subwoofer. Using the driver at higher ratings can cause damage and failure to occur. It is measured in watts.
What is a free air sub?
Let’s get this out there right away, as simple as possible: a free air subwoofer is a specially designed speaker that does not require installation in an enclosure. Typical mounting is through your car’s rear package shelf or on a mounted panel in the trunk.
What is QTS speaker?
What is f3 in sub?
f3 is the most meaningful parameter. The lower the f3 parameter the deeper the bass will sound. An f3 below 50 Hz is suitable for a sealed enclosure. An value below of 40 hz gives the best results. Vb is the net size (volume) of the enclosure to be built.
What is FB in subwoofer?
Fb = frequency of box = vent resonance frequency.
What does FB mean subwoofer?
The tuning frequency (Fb) is the resonant frequency of the enclosure. It alone doesn’t define how low the speaker will play. Depending on the driver specs and cabinet size Fb can be even an octave lower than F3. For that reason Fb really doesn’t matter to the user, F3 does.
What is QTS and QTC?
Qts: Qts is the total Q of the speaker. It is defined as 1/Qts = 1/Qes + 1/Qms. Qtc: Qtc is the total Q of the speaker in an enclosure including all system resistances.
What is QTS and QES?
The Qes is a measure of the electromechanical damping caused by voice coil resistance and the interaction of the voice coil in the magnetic gap. A higher Qes means less electromechanical damping or a smaller magnet. The Qts is the total damping which is the combination of mechanical and electromechanical damping.
What is Fo speaker?
LOWEST RESONANCE FREQUENCY (fo) This frequency is usually referred to as ‘f zero’ and expressed in units of Hertz. This can be regarded as an element which determines the lowest reproducible frequency.
How is Xmax calculated?
The simplest way to calculate the Xmax specification is to subtract the thickness of the top plate from the height of the voice coil winding and divide it by two. This calculation describes how far the woofer (or midrange or subwoofer) cone can move forward while keeping the voice coil inside the magnetic gap.
Do free air subwoofers sound good?
Free air subwoofers often lack punchy bass. Your efforts to insulate will reward you with a better sounding system. You need to consider the alterations that either a free air or infinite baffle system will require.
Can I use any subwoofer for free air?
You can use any sub IB. It may or may not sound good. Some are made specifically for IB use. Some are not but still sound really good.
Is higher QTS better?
So if you’re a minimalist when it comes to processing, higher Qts is indeed better. But if you’re not averse to loading up your midbass with EQ, then you can possibly do better by using a lower Qts (or higher F3, or both) driver with a superior motor design.
