It can be very difficult to work out just why (and how) two apparently near identical designs can sound different.
Cool speaker enclosure design drivers#
This is often despite the fact that many will show frequency response (both on and off axis) to be very similar, with many sharing one or more of the same speaker drivers as used by other manufacturers. There aren't many 'real' audio brands that will be truly awful, but there will be differences. This is reflected in commercial offerings as well. We can be fairly certain that some of the published designs will sound very good, and others awful. It's highly likely that most of these will sound different from the others, although it's almost guaranteed that the designer will claim that his/ hers is 'better' in some way. A web search will reveal literally thousands of different designs, a great many of which are (at least superficially) quite similar. One of the most popular pastimes in the DIY audio world is building loudspeaker systems.
High quality stands should be used to bring the tweeter approximately to ear level or slightly above.
The next figure shows the on-axis response of the different presets provided in the DSP setup file. The below figure shows the off-axis measurement at 0°, 15°, 30°, 45° and 60° using "Preset 1" in the provided DSP setup file. Sound pressure frequency response measured in an anechoic chamber is shown. All of the measurements are made at 1m at tweeter height: Since the target group is the DIY enthusiasts the design also required reasonable simplicity.Īnechoic chamber frequency response. One of the design goals of this system is to make the enclosure as small as possible. Three channels of amplification mean that there is available DSP for each individual driver.ĭetailed info and datasheet on the DSP-amplifier can be found on Hypex' website. It delivers 2x500 W into 4 ohm & 1x100W into 4 ohm, and has a large filter bank for crossover and EQ. The choice lands on the Fusion FA.503 DSP amplifier from Hypex. We chose to use a three channel plate amplifier with DSP capabilities which is of high quality, easily available and provided ample power for the speaker system. Since it also has a smooth response high up in frequency it can be used all the way to a midrange unit, thus eliminating the need for a dedicated mid-woofer in this loudspeaker kit. With its high power handling and low Q and Fs it can handle a large amount of EQ in the low end.
Cool speaker enclosure design driver#
L26RO4Y - This subwoofer driver is the perfect solution for good bass in a small enclosure. It uses a Neodymium magnet system for optimum air-flow, minimal back wave reflection and a healthy sensitivity. That makes the sound imaging very stable with a large sweet spot. A benefit of the coaxial arrangement is that the off-axis response is equal in all directions. Since the chosen midrange coaxial can easily play down to 150Hz, it was possible to use a high quality subwoofer with excellent low-frequency extension to take care of the lower frequencies.Ĭ18EN002/A - The coaxial unit uses a lacquered magnesium/aluminium-alloy cone and dome, and are integrated to form a single acoustic source.
To achieve the design goals of this kit we chose to start with a coaxial unit in order to save some baffle space and get all of the benefits of sound quality from a coaxial. The design goal for this kit is to get a true fullrange loudspeaker system in a compact enclosure with outstanding performance. All are housed in a compact closed box enclosure and powered by the Hypex Fusion FA.503 or FA.253 DSP amplifier.
The coaxial unit uses a magnesium/aluminium-alloy cone for both the midrange and dome tweeter. The SEAS KingRO4Y is a 3-way loudspeaker kit, using a 26 cm aluminium cone subwoofer and an 18 cm midrange coaxial.
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