What is a good QTS for a subwoofer?
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 does FS mean on a subwoofer?
What does QTS mean on speakers?
Qts is the "overall Q" of the speaker, and is something that dictates motor force and what kind of enclosure a speaker should be in. Low Qts woofers (say .35 and down) should be in a ported alignment only.
Why does the QTS of a woofer matter?
Simply because it does not know any better. Qts is the "overall Q" of the speaker, and is something that dictates motor force and what kind of enclosure a speaker should be in. Low Qts woofers (say .35 and down) should be in a ported alignment only. Mid Qts woofers (say .36 to . 45 or so) works well in a sealed or ported alignment.
Which door woofers have the lowest QTS?
If your car audio system includes a subwoofer (and it really should), then you’ll want to search for a door woofer that has a low Q. Some 6.5-inch woofers like the Audison Thesis TH 6.5 II and Audiofrog GB60 have Qts values under 0.5. The Morel Supremo MW6, Hertz MP 165P.3, and Focal ES 165 KX3 woofers also have relatively low Qts values.
What is a low QTS subwoofer?
High Qts = floppy donkey. Low Qts = tight butthole. A floppy sub will do better in a sealed enclosure so that it'll have better cone control.
What does FS mean for subwoofers?
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 QTS?
The traditional way to measure Q is to measure the bandwidth between the -3dB frequencies, then divide the resonant frequency by the bandwidth....1.1 Measuring Re, Fs, Qes, Qms and Qts.Mechanical QQms = Fs × √r0 / (Fh - Fl)Total QQts = Qms × Qes / (Qms + Qes)2 more rows
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 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 F3 subwoofer?
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.
How do you measure QTS on a speaker?
Qts: Qts is the total Q of the speaker. It is defined as 1/Qts = 1/Qes + 1/Qms.
What is QMS subwoofer?
Qms is related to the dampening in the suspension. A High Qms means low damping in the suspension relative to the mass. Qes is related to the dampening in the motor system - which is related to Bl/Re. High Bl factor in itself means absolutely nothing at all.
What is total speaker Q?
The Q(ts) or total Q of the speaker, also known as total quality factor, is basically describing the resonance curve of the speaker. The higher and thinner of a peak the curve has, the lower Q it will have. The rounder a peak the curve has, the higher Q it will have.
What is XMax subwoofer?
XMax = The distance a subwoofer voice coil can move in one direction without leaving the magnetic zone a.k.a. how far the woofer can move.
What is QTS Thiele small?
Thiele-Small (T/S) Parameters are a series of measurements that define the mechanical, electrical and electromechanical properties of a loudspeaker. The TSPs apply particularly to individual drivers and enclosures (vented or ported) and give us specifics about how the speaker design and performance.
What is bl subwoofer?
BL=mass/current. a BL >30 typically means tight, controlled/accurate cone movement and low Qts (which has nothing to do with cone size, by the way). that is, a high BL. HELPS to result in good transient response. but you can also have too great a BL known as an "overmotored" sub.
What FS means?
AcronymDefinitionFSFor SureFSFree Safety (football)FSFree StuffFSFree Space (computer disk)191 more rows
What frequency should I set my subwoofer box to?
for deep musical bass, you tune the box just above the Fs of the subwoofer. that's where the output of the box will spike and hit hardest. The higher you tune the box, the boomier it'll sound, which isn't audibly pleasing, but tuning around 50Hz does increase SPL.
What is XMax on a subwoofer?
XMax = The distance a subwoofer voice coil can move in one direction without leaving the magnetic zone a.k.a. how far the woofer can move.
What is a speaker's resonant frequency?
The resonant frequency of a speaker, f0 (pronounced: F-naught), is the frequency below which a loudspeaker is increasingly unable to generate sound output for a given input signal. Interestingly, this HPF is often characterized, mathematically, as an electrical R-L-C circuit.
What is QTS in audio?
Qts is the Thiele/Small parameter that defines the total Q factor of a speaker. The value takes into account both the mechanical and electrical Q factors of the driver, equally. Most car audio speaker manufacturers don’t fully understand the relationship between Q and frequency response, or they choose to ignore it to deliver a certain “sound.”. ...
What is the drawback of a suspension speaker?
The drawback is that the extra energy that is stored and released by the suspension is distortion. It’s sound that wasn’t in the original recording. Remember, the suspension of the speaker is a spring. You don’t want it to continue to resonate back and forth after the signal goes away.
bass juggernaut
so i was on the "cone area" thread and seen Ray say the first thing she looks for in a sub is "BL first then XMAX then QTS and QES then watts" and i would like some one to elaborate on that and why those matter and what they mean (the simple version) i really appreciate it since i will be purchasing new subs tomorrow either AB HD1822 or Obsidian 18 D2 or AQ HDC3 those are what i have narrowed it down to..
98GCLimited
This will be a good read for you. Should answer all the questions and more.
What are the T/S parameters?
Thiele and Small Parameters (also referred to as T/S parameters) are used to define technical electromechanical parameters for a loudspeaker. These specifications are used primarily by advanced consumers that are looking for low frequency performance of a subwoofer. A manufacturer runs a series of tests to determine the parameters of the loudspeaker and will typically print this information in the product manual of the subwoofer. This information is used by intermediate to advanced car audio box builders to make a subwoofer enclosure designed to the exact specifications of the subwoofer. The ratings are named after A. N. Thiele and Richard H. Small, the two men responsible for these detailed parameters.
What is damping in subwoofers?
The damping is the effect that reduces the amplitude of oscillations within the subwoofer. Qms: This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 – 10.
Why is low Q important?
Low q drivers tend to have higher efficiency, and more suitable box requirements for ported applications.#N#The q of the system is usually more important in determining if it's "warm" or "fulller" than the q of the driver itself.
Is QTC the final factor?
And I agree that the QTC is the final factor, not the QTS. However when comparing drivers, if driver A has a QTS of .72, and driver B has a QTS of .37, driver A's QTC will most likely only go as low as .72 (most likely up), whereas driver B can be as low as .37 but can be brought up to .6 or .7 or higher by putting it in a small enclosure.
Is low QTS better than high F3?
Low Qts is generally an advantage in car-fi because a lower Qts woofer will generally yield a lower sealed Qtc in a smaller box, with a relatively high F3. The higher F3 is a huge component in why lower-Qts woofers often sound better, because some woofer's low-end rolloff dovetails nicely with the average car's transfer function.
Does high QTS make a good woofer?
Also, high Qts doesn't make a woofer better for I-B installs. What it does is reduce the need for LF EQ compared to a similar woofer with a lower Qts. I can't think of an 8" driver I'd rather use as a midbass in an I-B install (or any other) than the B&C 8NDL51.
