#CROSSOVER NETWORK KIT HOW TO#
#CROSSOVER NETWORK KIT DRIVERS#

You can find the details of this project in the file below. As a final touch, I included a LCR network, which is operating as a notch filter aiming at the resonant frequency of the tweeter. In addition to that I’ve included an impedance compensation network to cope with the tweeter’s overly enthusiastic response in the top end. In the end I developed a crossover network based on a already existing design involving the same tweeter (Q1R) and D6.8B in almost the same enclosure (slightly different volume/dimensions, but the same baffle width). As for the poor bass, part of the reason could be the resistance of the 1.5 mH coil in the low pass filter which is 1.1 ohms! In my opinion, this is unacceptable in a good crossover design, especially when we are dealing with not very sensitive drivers. The problem is that the frequency response is tilted towards the upper end with a steady increase in the amplitude from around 9-10 kHz to 15 kHz where it gets even worse with a huge hump in the area above 15 kHz. The issue with the treble from the negative reviews is confirmed by my measurements. Others think that the bass is weak and I was not impressed either. In particular, they find the treble too “hot” or “bright” and I have to admit that they have a point. Despite the many positive reviews I’ve read, there are some people who were not happy with their purchase.

#CROSSOVER NETWORK KIT DRIVERS#

There are some speculations on various audio forums that D6.8-IIB drivers are basically D6.8B not meeting the quality requirements of the manufacturer and they are getting rid of them trough the DIY market as part of a kit.Īnyhow, I’ve decided to share my two cents and hopefully spark a discussion as I find these speakers holding a great potential, but only if you don’t use the crossover that comes with the kit. It seems that it is some kind of variation of D6.8B which looks identical, but apart from that it’s not very clear. While the latter is easily recognisable as it’s part of the official range of HiVi drivers, the former is a bit of a mystery because there isn’t any official information, let alone T/S parameters, that can be found. The kit is basically a two-way system employing the following drivers: HiVi D6.8-IIB mid-woofer and HiVi Q1R tweeter.

#CROSSOVER NETWORK KIT HOW TO#

That being said, on the website above you can find a product manual with instructions on how to build the speakers and some graphs like frequency response and impedance, which appear to be from measurements. This is the very nature of any kit after all. That’s understandable - building speakers from a kit is supposed to be a straightforward process where we don’t really need a technical drawing of the cabinets and the schematic for the crossover network. Sometimes the cabinets and the components (including the drivers) are sold separately and not as a complete kit (depending on the vendor).īeing a commercial kit, these speakers are not very well documented in terms of technical data and design. As Swans Speakers appears to be a division of HiVi Research you can find the same kit under the name HiVi DIY 2.2A instead. As the name suggests it’s one of the two official kits from Swans and you can find more details about them here: swans diy speaker kits. I’d like to share with you my latest project, namely building a pair of speakers from a commercial kit - Swans DIY 2.2A and the modification that I’ve come up with.

Crossover network kit