What Is Bass Driver Speaker
- The low frequency driver in a resonant speaker enclosure system such as a ported cabinet or passive radiator cabinet cannot start and stop instantly like it can in a sealed-box cabinet. In order to achieve their bass output, ported speaker enclosures stagger two resonances. One from the driver and boxed air and another from the boxed air and port.
- Active Speakers vs Passive Speakers: Which to Use? What is the difference between active speakers and passive speakers, powered and unpowered speakers? Here the confusion is laid to rest.
Simple answer if all else was equal, 'Substantially better', BUT you have to realize all else is never equal! With a good acoustics engineer designing a speaker system, you might get far better low frequencies out of a 4' driver speaker system th.
EnclosuresDrivers produce sound by their diaphragms moving back and forth to create compressional waves. The sound radiated from the front and back of diaphragms is identical except that their phases are opposite.
What will happen if drivers are driven unbaffled, or mounted to nothing? As illustrated, sounds radiated from the front and back of diaphragms cancel out each other, silencing bass sound. The purpose of a baffle is to isolate the front sound from the back sound, which allows for bass sound to be audible.
Bass Speakers For Home
There are many types of enclosures available where a variety of baffles are incorporated. Next, we will discuss representative enclosures.Flat Baffle TypeA baffle is the only means to isolate the front sound from the back sounds. Drivers are mounted on baffles of a certain size. The larger the baffle, the more advantageous is reproduction of bass sound because the back sound must go a longer roundabout distance before it can get to the front of the enclosure. In applications of this method, drivers must be located off center of the baffle.
Some disadvantages that bass reproduction capability is not as good as other enclosure systems, which is inevitable with flat baffles, may be justified by the ease in building enclosures, and sound with openness. This type of enclosure should be located rather distant from and not parallel to the walls. This is to avoid disturbance of back sound by the walls.Open-Back TypeAn open-back type enclosure can be attained if the edges of the flat type baffles are bent.
The idea is to make flat enclosures smaller to overcome the necessity of a larger size baffle for richer bass sound. Note must be taken, however, that backward bends sometimes function as a thick pipe. Pipes present at the back of drivers will be a source of pipe size dependent resonance.
This fact suggests the possibility of appearance of strong peaks in reproduced sound if enclosures are excessively deep. It therefore is recommended the depth of back opening be at a reasonable extent.Sealed TypeEnclosures of this type have the back of the baffles completely housed in a box of an appropriate size to prevent sounds from being radiated from the back of drivers, confining the back sound within the box. Thus, only sound radiated from the frontal side of drivers will reach the listeners.The advantage of sealed type enclosures is peculiarity-free bass sounds and good transient characteristics of bass sound.
One factor in building successfulsealed type enclosures is careful bonding using adhesive to ensure satisfactory sealing.Phase-Inverting (Bass Reflex Type)A phase-inverting type enclosure is called a bass-reflex type enclosure. This type of enclosure, as well as the sealed type, is one of the standard enclosure systems. Confining the sound exiting from the back of a baffle within an enclosure is the theory of the sealed enclosure system. With phase inverting enclosures, a port (duct) is provided to enhance bass sound of a selected frequency range.
This can be carried out by making back sound present only within the enclosure of a selected range of frequencies resonated and inverted, and by adding such processed sound to the sound originally present at the frontal side of the baffle through the port. With phase inverting enclosures, over sealed enclosures, reproduction of an extended bass frequency range can be expected if the enclosure volume is the same.Double Bass-Reflex TypeThe double bass-reflex system is intended for further enhancement of bass sound, and can be achieved if an additional bass-reflex process is given to bass-reflex system enclosures.
Best Bass Speakers For Home
Calculation of parameters of double bass-reflex system enclosures, which function in a very complex mode, often requires experience, intuition and the sixth sense. It is, therefore, strongly recommended as many and various calculationexamples as practical be reviewed and knowledge be built up before designing your own version.Back-Loaded Horn TypeBeing one of the systems where sound radiated from the back of drivers is utilized to enhance bass, including bass-reflex and double bass-reflex types, back loaded horn type enclosures make the most efficient use of such back sound.
Back-loaded horn system enclosures work in such a manner that, as bass comes out of a horn mounted on the back of a driver, the rest of sound spectrum, e.g. Mid- and high-frequency ranges, is radiated directly from the driver.
Enclosures of this system are highly efficient by actively utilizing sound output from drivers, and respond well to the subtlest componentsof music signals.
I have just started looking for a twelve myself for a small cab. For small dimension cabinets a driver with a low Fs and Vas will be needed. That probably means a subwoofer and probably lower efficiency. It will not cover the midrange so an additional driver, maybe a 4' or 6' or something will be needed to cover the 500Hz and up area. It is not trivial to design a small box with extended low end performance.Get WinISD Pro (free) and start evaluating drivers in that enclosure volume. Bruce Gavin's excel reference spreadsheet contains data on many drivers.It's the one called Prosound Reference and is a great resource. Don't use the EVM 12L for bass.it can't go that low and you'll just break it.That small cab needs big excursion to make any bass.
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You can try a JBL 2206H, 4 inch voice coil 600 watts.Block half the ports on the cab for step down mode, because it's probably tuned to 80hz. For stage monitor fill, that might get you enough bandwidth.you could add a tweeter if need be.What you need is a bullet proof 12' that won't buckle under the huge excursion you'll subject it too.especially with 5 string bass. As stated above, that TL806/Boogie cabinet was not tuned for bass.especially not 5 string. If you pull up the dimensions for the Aguilar/Bergantino/Epifani offerings and compare the raw dimensions, you'll know you're in trouble. They're a lot bigger, even though they don't look it.For the original question, I think the Eminence Neo line is a good place to start.
An Avatar 1-12' with a DeltaLite II Neo or Delta 12LFA should start you off for new and used Aguilar/Bergantino/Epifani may give you the best bang for the buck.