Teleki Electronics

Audio Crossover
Commercial crossover networks can range in value from about £15 to £100 (in the UK). The most expensive ones, it is claimed, are matched to a particular speaker set !!???.

Built up Crossover unit

However, if you want to save yourself some money, then you can build your own for a rough cost of about £10 for a pair. The image left, shows a prototype that was built up with parallel (non-polarised) capacitors and the inductors wound on power toroids (Al=93). The unit was placed inside an old Warfedale speaker unit and it did in fact sound pretty darn good. That is, until we were asked to 'turn that RACKET down'.

Here, we have a typical run of the latest program, running in the .net framework 3.5.

Output run of Audio Crossover network designer.

Below is the pspice simulation of a design

Pspice simulation of above design

Key Benefits
Accurate designs, that are stored on the computer in text format, ready to be imported into any word processor.
Design procedure trivially fast.
Complete documention included.
Pricing £25
Home

Given, that there's a limited range of suitable audio Capacitors, to avoid gross errors in the frequency response, its possibly a good idea to make all capacitors as parallel doubles. You're not going to achieve a perfect response in any case, due to the vagaries of the loudspeaker performance.

To fully evaluate an audio system, you're also going to need something like an Audio Precision test rig, which will give a thorough test of said system. A cheaper alternative, is to use the sound card in your PC with possibly some shareware audio analysis package.