The bass cabinet enclosure will experience a lot of vibration from the bass you pump through it. A solidly constructed enclosure is essential for a bass cabinet.
Most enclosures are made of plywood. Good quality plywood is important. The type of plywood has a limited effect on the overall sound of the cabinet. You will sometimes see the term void-free plywood.
That just means the plywood is solid though and through. For really heavy ones, look for wheels casters. The corners should be tough and protected, too. The corners will experience a lot of abuse. You may see terms like stackable or interlocking corners. This helps you easily stack two cabinets together. Some cabinets are sealed meaning no air leaks in or out of the enclosure. Most bass cabinets are ported , or vented , meaning the cabinet has an opening where air can travel in and out. Sound is essentially moving air.
As the speaker pushes air in front of it, the rear side of the speaker on the inside of the enclosure is sucking air into the enclosure and vice versa. Having the port helps the speaker work more efficiently which means it requires less amp power to drive it. Ported cabinets, as a result, often get a better low-end response. In a sealed cabinet the speaker cannot suck any air in.
That makes the speaker work harder. Sealed cabinets need more power to achieve the same results. Some bassists like the sound of a sealed cabinet claiming they have a punchier sound. You will have to decide with your own ears. Most of your bass cabinet options will be ported ones. Speakers , sometimes called drivers or woofers , are constructed of a voice coil, magnet and a cone.
The cone is the outer part of the speaker which, when it rapidly moves in and out, moves the air to create sound waves. Cones are usually made of paper and other times plastic or metal. The voice coil and magnet work together to cause the cone to move in and out. The voice coil is an electromagnet. Stay Connected. Enter email address Subscribe. Cabinet Design. Optimizing the Performance of Custom Boxes. In the past three articles I have discussed various speaker parameters.
In this first of two parts, I will explain how those parameters relate to designing guitar cabinets using modeling software. Also, since guitar tone is subjective, your idea of optimal may be completely different than mine. It is very user-friendly and has good features, although you may find similar programs to be equally effective.
Also, due to the nature of guitar speakers, you are unable to take advantage of certain graphs predicted by the software that are otherwise useful for bass or pro audio designs. One very important graph for modeling pro audio and bass cabinets is cone displacement. This graph demonstrates the mechanical power handling of the speaker in the cabinet you are modeling shown above.
A shaded line represents when the speaker is reaching Xmax , or maximum linear excursion. To a certain point, this may only represent distortion associated with the voice coil moving non-linearly.
For pro audio or bass applications, this distortion is not desirable and should be avoided. However, for guitar, a certain amount of distortion may be desired. The only graph I think that will truly help us in modeling guitar cabinets is custom amplitude response. This graph best represents lowend response and the output level that can be expected. Beyond HzHz, you should use the SPL versus frequency graph provided by the speaker manufacturer. Big Tony has been with Eminence for over 10 years and is responsible for many well-known guitar speaker designs.
Keeley Compressor Mini Review. Rig Rundown: Deer Tick. Orange Amplification Announces the Guitar Butler. Meet your miniature amp masseuse. Read More Show less. Enter Email Address Subscribe. Rig Rundown: Dinosaur Jr. Apallingly non-standard clamping technique for the corner vents. Speaker screw retention blocks installed. Proactive leak prevention using ab using regular woodworking glue.
Some more non-standard non-existant clamping for the side and vertical bracing. Those aren't jigs, they're stilts! At last, some slightly more standard jigs! Glueing the full-depth back bracing. Glueing the half-depth back bracing. I had some difficulty removing some of the clamping screws, so much so that a couple of them sheared right off! Fortunately, these were not in any of the edges that were to be rounded over!
Pressing the damping foam down on the bracing to form temporary indentations. Marking those indentations with marker before they disappear. The cutouts in the foam fit nicely. Spraying contact adhesive on the cabinet back. Cabinet back with damping attached. Discovering that the back panel was a bit short.
Fortunately, this can be positioned at the base, where it doesn't matter. Generous amounts of polyurathane glue when attaching the back - but this time it was deliberate, as part of a proactive leak prevention strategy. A mixture of screw- and gravity-clamping when attaching the back.
Squaring and smoothing all the edges including the short back-base edge. Router with roundover bit and the same perspex jig used for the speaker cutouts, but this time used simply to keep the router level.
The "inset" baffle presents a problem - there is not enough lip to support the roundover bit's guide wheel. I therefore had to "pad it out" and level everything so that a roundover could be cut on the protruding sides, top and base. However, I don't like the constant cross-section of the first Apropos: is there a Cubo 15 EE parameter set for this one for Hornresp? The transition from the first segment to the second is a mystery to me. The cross-section at the end of the first segment is much larger than the entrance cross-section of the second segment, isn't it?
Why was this discontinuous transition chosen? Wouldn't an additional board in the corner achieve a better transition? I have something similar in mind for the transition from the second to the third segment. That's why I would like to 'play' a little with a simulation in order to realise a prototype in a more targeted way Hi Cubo, thanks for sharing your plan!
Cubo15 replied the topic: 4 months 4 weeks ago. I would use them in Cubo 15 Extended. Best regards. Papay replied the topic: 5 months 1 day ago. And the parameters may change after a while. Tell me, can I use them in Cubo 15 and in which version? Sorry for my english, google translate! Drew replied the topic: 6 months 1 week ago. Cheers, this is super helpful! I might wait till I can afford a more appropriate then, do things properly.
Cubo15 replied the topic: 6 months 1 week ago. Hi Drew, I advise you to use the Qts x Vas rule to decide which Cubo 15 version you should build, I put extended research into developing it. Drew replied the topic: 6 months 2 weeks ago. Hiya Cubo15, I'm planning to build one of these cabinets you decided and am getting pretty excited about it.
I wanted to get your advice about which version to build before I get started though. I'll be using a monacor sppa driver link below because I was gifted one and it'll match my amp.
Let me know what you think would be best, Cheers! Cubo15 replied the topic: 6 months 3 weeks ago. The p. Zambrotta replied the topic: 6 months 3 weeks ago. Zambrotta replied the topic: 6 months 4 weeks ago. Thanks Cubo will start my build today using 16mm mdf Wil send pics soon. Cubo15 replied the topic: 7 months 21 hours ago. As far as I can tell those are two different drivers, the BMW has substantial lower Xmax, Qts and power handling, however both are best suited for Cubo 15 Extended.
Zambrotta replied the topic: 7 months 5 days ago. Greetings from Zimbabwe. I want to build a pair of Cubo 15 standard version and load them with p. I would like to find out if those speakers are suitable for those cabinets.
Plizz assist. Cubo15 replied the topic: 7 months 2 weeks ago. Simon H: Last time I checked they were on the 'plans-page' freespeakerplans. I usually make a 2 part plywood ring two rings of at least 18 mm thickness , with t-nuts embedded within it. The first ring fits the 15" bolt pattern and is large enough to fit the 18" driver, the second ring allows the 18" to make at least 18 mm of excursion at least Xmax but preferably Xmech.
The rings are glued together but the structure as a whole is removable, so you can still mount 15" drivers later. Lime replied the topic: 6 years 8 months ago. I have now edited the first post.
It redirects to the correct page: freespeakerplans. Dougal21 replied the topic: 7 years 9 months ago. MAutopsy replied the topic: 11 years 10 months ago. Thanks bitzo- I gave myself a crash course in HornResp last night. Good stuff i have a much better understanding of it now. However this sim is not so accurate.
Divide the horn in 5 section. Need some help, trying to figure out HR V Got the Cab inputs from a speakerplans forum bitzo pointed me to and my driver specs are as follows: Radian Resonant Frequency Fs 56 Hz Impedance Re 5. Equivelant Vol. Vas Voice Coil Overhang Xmax 3. I just would like to know what the error is and how i get the value.
Fixing the links now Development Based on Cubo 15 and Cubo 18, Cubo Sub is the 3rd prototype in a series of cabinets aiming at good reproduction down to 30 Hz. Acknowledgements The designer likes to thank Xoc1 for his aid in the development process.
That does defeat part of the hybrid purpose, as the "tap" near the horn mouth does give it an ever so slight increase in output near 60 Hz. It follows the concept of the 'tapped horn' in that regard instead of a 'rear loaded horn' a. Cubo 18 and Cubo Sub are two different designs. Or does that just defeat the purpose of it being a hybrid?
I'm quite new to this so excuse the poor terminology please. Is the three layer buildup on the opposite side of the horn from the Driver for strength or needed for the horn tapper? Cubo15 replied the topic: 8 months 3 weeks ago. The main benefit of a 21" driver over an 18" driver in Cubo Sub is either when you EQ it down low or when you have a lot of power available. I've send you the plans for Cubo 21 from questionsaboutcubo.
I accidentally bought these. Could you please assess how well this driver would work in the Cubo Sub? Cubo15 replied the topic: 1 year 2 weeks ago. I would rate them exactly in that order: 1. Eighteensound 18LW 3.
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