Front horn loaded speaker design
Planning to get a horn loaded subwoofer to replace your old bass reflex sub but not sure if is better. Or maybe you are thinking to try out new things and want to find out more about horn loaded subs. Then you are at the right place to get the necessary information you will need to make an informed decision. Even for some owners who own a stereo setup, they will also include a sub to supplement the lower frequency region. There are so many subwoofer types out there, and today we will find out more about the horn loaded subwoofer and the bass reflex subwoofer. A horn loaded subwoofers are highly efficient, a well-designed horn can transfer more of the electrical energy in the voice coil into the air, and also takes lesser power for more output.
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Log in or Sign up. Steve Hoffman Music Forums. Location: Buenos Aires, Argentina. Any truth to these statements?
They're part of a post on another forum but from '05 : For an actual technical reason, consider that a horn loaded speaker achieves its high sensitivity by directing more sound forward and less to the side. In traditional dome tweeters, you are radiating some extra sound to the sides such that in a reflective room, you might hear more overall sound in the midrange and the low range because what you hear for highs isn't projected so widely and thus its less efficient, especially at the high range, overall.
A horn loader speaker will sound similiarly between different rooms because its allowing less of its sound to radiate in an extremely wide pattern in the first place. This is not a bad thing if extreme room renovation is not a possibility. Because the horn loaded speaker is sending ALL of its sound forward, you're actually getting a relatively equal mix of lows, mids, and highs, as opposed to wide dispersion dome-tweeter type speakers that send about equal balance forward, but also significant midrange to the sides.
A general rule that you could follow is that for a similiar overall performance class of speaker, the horn loaded one will probably sound better in a poorly treated enviroment but a wide dispersion speaker will probably sound better in a well-treated room. It is a tradeoff, but because of the relatively low wasted power in horn loaded tweeters and the less effect a bad listening enviroment has on them, they do remain quite popular.
Obviously, there may be exceptions to this generality, but the point is its a decent thing to keep in mind when comparing speakers. If you can't budget for a true WPC amp and all sorts of room treatment, horn loaded speakers may be an excellent choice. The Pinhead , May 29, Stump and SandAndGlass like this.
Location: Away, India. Horns are acoustic transformers, their efficiency is not a result of narrow dispersion. A horn-loaded speaker does not only radiate to the front, not in the bass at least. Compared to a now-common narrow baffle direct radiating speaker, something like the Avantgarde horns are basically cardioid from the midrange and up which helps in tough rooms. RhodesSupremacy , May 29, KT88 , May 29, Location: Syracuse NY.
Stump , SandAndGlass , 62caddy and 1 other person like this. Location: Victoria, B. I think you guys need to do a little reading: Horn Theory » jeff. The Pinhead likes this. Read most of that 5 or 6 years ago when I decided to go with horn based designs. SandAndGlass and The Pinhead like this. Did you build or buy? Though at some point I plan on breaking out the router and replacing the mid horn of my Cornwall with a Fastlane tractrix horn.
Had a lot of fun with DIY audio stuff though. When I have more time I totally want to try to build my own Edgar Horn speakers and tube amp and pre.
SandAndGlass likes this. The Pinhead and JakeMcD like this. Location: Southern US. Is the human mouth an adjustable horn? Just a thought. Manimal , May 29, AudioRoss likes this. Most but not all horn designs are compression drivers, not just an ordinary speaker with a horn stuck on the front. The compression driver is designed to mate the sound to the air, acoustic impedance, coupling. If you listen to just the driver and then, mount it to the horn body, it will get louder, that is the efficiency of horns.
However, just like a light bulb, if it is a bare bulb, the light will radiate in all directions. Place a reflector on it and direct the light on one direction and it will be brighter and cast all of its light in that direction. If you are speaking of pure horn designs like those used in a pro-sound environment, yes those horns are designed, as most horns are, to control the direction of the sound as it exits the horn into the room.
The term that is used is a constant directivity horn, for that exact reason. The quoted post makes many general assumptions about horns as well as conventional tweeters, which takes away from some of the points that are trying to be made. But, yes, horns do control direction and will sound more or less the same as compared to a conventional direct radiator speaker design , from room to room because the sound reaches you before it reflects off of the different surfaces in the room.
Horn systems are more complex in their designs than most people realize. The higher frequency the band is, the more energy that is contained in the band. All I mean by this that, the higher the frequency the less power is needed. The job of an exponential horn is to amplify the lower frequencies so that all the sound is at the same sound pressure level. As the frequency gets lower. Here is an Altec Lansing A style cabinet with the Altec B horn on top, which, in theory goes from , cycles I said, in theory.
Now, it is not exactly correct that bass horns do not control the direction of the sound, they do. Shown here is the Altec bass cabinet, when combined with the B horn, a cycle driver such as a A , and a cycle frequency dividing network crossover , make the A Voice of the Theater system VOTT. The purpose of the horn part is to acoustically couple the LF bass driver of conventional design to the surrounding air.
This is effective from cycles down to about cycles, after that the bass reflex part takes over down to about cycles. Where, the higher the frequency is, the more it has a tendency to beam and it is the job of the HF horn to spread out the high frequencies evenly. Similarly, bass frequencies spread out more and more the lower you go. By the time you get down to cycles, it is almost impossible to control the direction and it is almost impossible to localize the source.
In the case of the cabinet, it does a nice job of controlling the direction of the LF sounds by restricting their dispersal down to about cycles. Below cycles, where the bass reflex part of the cabinet kicks in. From that point, the cabinet is not very effective in controlling the direction of the bass. In speaking of the cabinet design, there is one critical point the has not been covered, that being time alignment.
If a speaker is time aligned, then all the frequencies, will reach the listener at the same time, which means, being in phase. This is what gives a loudspeaker its imaging, the ability to preserve the placement of instruments throughout the perceived sound stage.
Thiel loudspeakers are known for their excellent imaging due to being time aligned. The cabinet is 24" deep and notice that the bass speaker is not mounted on the front of the cabinet, but the speaker itself is mounted at a depth of 15" inside of the cabinet. While that part is obvious due to the horn part of the cabinet, what is important about this design is that the position of the bass speakers voice coil is along the same vertical plane as the voice coil on the HF driver.
The sound originates from the same plane in space, therefore all frequencies reach the listener's ear at the same precise time and in correct phase. Lansing and partner and the original Voice of the Theater design was born. Movie theaters were using Western Electric horn speakers that, while efficient, were not time aligned.
In keeping with this thought, you can see why it is desirable to have the sound reach the listener directly, without reflecting of walls or other surfaces first. The cabinet design, does an excellent job of controlling the directional aspect of the sound, therefore eliminating primary room interactions, thus they are not really that dependent of the environment of a particular room. In that regard, the OP's quoted post is entirely correct. Currently, I have two A cabinets sitting across from me directing their music to my listening position.
Last edited: Jun 1, SandAndGlass , Jun 1, Stump , RhodesSupremacy , konut and 1 other person like this. The only other speakers on my to own list are Tannoy and some classic Altec speakers. I built a pair of 'Avebury' back loaded horns from plans: Woden Design Mark Audio » One of the first things I noticed after switching from Parts Express TriTrix was that for a given perceived volume, the sound level disturbing my wife on the upper floor was decreased.
I attribute this to the speaker having a more direct and tighter sound projection than other speakers. I think some people call this 'Beaming'. So I think some aspects of the OP's question have merit. I tend to avoid horns, not because of the way the sound radiates, but because they can be a bit peaky and hard on my ears.
I'm not trying to knock them. There are some fantastic horn-loaded speakers out there Wharfedale even made a few nice ones for a while. They're just not for me more or less. Honestly, I like cone drivers best. With the right application, they can be open, spacious, and airy, with excellent efficiency, not to mention the sweetest sound I've ever heard, but this is also my personal preference.
Here's a picture of the tweeter that's used in my main speakers Wharfedale W90's. It's Gilbert Briggs' famous Super 3, first introduced in The one shown here is from the early '60's when my W90's were made. First off, each W90 cab has two of these tweeters, mounted on the far-left and far-right of the cab, which produces a very-wide soundstage. I mount the cabs up in the air, about 10" off the ground, and that puts the image right where it should be, at least for this room and the speakers' proximity from my listening spot.
Here is the speaker in question Mine look just like these except without the overhanging tabletops Built in late This picture shows the upper section where the two midwoofers 5" cone drivers and two Super 3 tweets are housed, free-air-mounted inside that open area.
The two 12" woofers with very-large alnico magnets have their own isolated, front-ported enclosures, both of which have a sand-filled rear panel Fighting resonances was high priority at Wharfedale back in those days.
Design of a Front Loaded Exponential Horn
You seem to have Javascript disabled. Drivers 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. There are many types of enclosures available where a variety of baffles are incorporated.
Back loaded horn speaker
User Name Stay logged in? I have been trying to work out the difference between front loaded, back loaded and tapped horn. Trying to search images to get examples, I find I am now more confused than when I started. Can anyone explain in plain English i. I think that a back loaded horn is where the back of the driver feeds the horn section of the cabinet. I think that front loaded horn is where the front of the driver feeds directly into the horn section and the back of the driver is closed off. Tapped horn I am not sure what it is classified as since both the front and the back of the driver is feed into the horn. Can anyone please provide clear examples of each. Then if possible a very quick summary of advantages and disadvantages of each. Edit: Also need to know what horn loaded is
Category: Horn loaded speaker design
Access Google Drive with a free Google account for personal use or Google Workspace account for business use. I've been really happy. This design is old. Introduction The objective of this project was to design and build a stereo pair of 3-way "hi-fi" speakers using off-the-shelf drivers and an original design for the speaker cabinets. Sep 25, - The LA is a large format 3 way line array speaker system that can be ground stacked, subwoofer stacked, or single pole mounted on two SAW subwoofer cabinet or other subwoofers with a 24" T-hat pole spacing.
WO2008023991A1 - A horn loudspeaker and a sound source - Google Patents
This has, by far, been my most involved and enjoyable project to date. Typically I have purely focused on design when it comes to the speakers I make, but with this build, sound quality was a high priority. The sealed volume was paired to the main driver and with the horns based on other designs available online and similar to those used on other speakers that are commercially available. Naturally, I am not an acoustics expert and although the horns did produce an overall better sound compared to when I tested the speakers without the horns , I have no idea if they are the correct design but add a particularly nice aesthetic to the speakers. Overall, this project has pretty much cemented in my mind that building speakers is ultimately what I love to do.
The TH118XL
I was just wondering everyone's thoughts on their preference of horn loaded or front loaded speakers. Why do you prefer one over the other? HF drivers are attached to horns in modern design. I myself prefer front loaded cabinets. For the venues I do they work and sound great.
Diy horn speaker plans
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Horn technology
RELATED VIDEO: Hornresp: Front Loaded Bass Horn Basics....For their size and cost the Fostex FEEn double bass-reflex speakers really sound great. The speaker enclosure plans for the double bass-reflex cabinets were provided with the FEEn driver documentation which also included speaker cabinet plans for a large back-loaded horn speaker enclosure. Being impressed with the great sound from the smaller double bass-reflex speaker boxes I decided I wanted to get horny and have a pair of the large back-loaded horn loudspeaker enclosures made up. The back-loaded or rear-loaded horn loudspeaker system is like bass-reflex and double bass-reflex speaker types in that the sound radiated from the back of speaker transducer is utilized to enhance the bass response. The difference however is that back-loaded horn BLH speaker enclosures make among the most efficient use of the back wave from the speaker driver.
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The iconic Klipschorn is the original, three-way, fully horn-loaded loudspeaker that laid the foundation for the Klipsch brand. In its latest rendition, this historic speaker boasts an all-new neodymium tweeter, premium wire management system, and fully-enclosed design for flexible placement. The Klipschorn is the only fully horn-loaded loudspeaker available to consumers.
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this is the particular case.