For a dipole experiment, I am looking for a pair of inductors between 15 and 20mH. Someone has something nice, including the willingness to ship to Switzerland?
Many thanks!
Erik
Many thanks!
Erik
i may search what i have and send. but before proceeding - mundorf zero ohm transformers cost hundredsof euros and weights pobbaly 10kg. on top of that switzerland is outside EU. so not cheap project.
https://www.audiophonics.fr/en/mundorf-mcoil-n/mundorf-n300-zero-ohm-self-coil-18mh-p-1710.html
I searched for the Mundorf, and at that price some biamping becomes very attractive 🙂
I searched for the Mundorf, and at that price some biamping becomes very attractive 🙂
yep 😀 but only if speaker design is 1st oder slope low pass- simple RC on amp input. then it would be better than mundorfs. but price to pay is... an amplifier- almost never same quality as amp is used for high/mid. and.. any design witch have active crossovers (mostly based on opamps) is no go in highest quality systems. so.. everything at higehst level is expensive 😀 its moe like "arm or leg" desisions.
Most of the active crossover per Linkwitz can be done without unity gain buffers.
At least that is what I have been using.
www.diyaudio.com/community/threads/a-modular-analogue-active-crossover-filter-solution.329458/
www.diyaudio.com/community/threads/unity-gain-non-inverting-buffer-options.403759/post-7465303
In my personal experience, active crossover + separate amps for individual drivers is almost always superior.
It doesn't have to be more expensive if you build your own.
My 2 cents,
Patrick
At least that is what I have been using.
www.diyaudio.com/community/threads/a-modular-analogue-active-crossover-filter-solution.329458/
www.diyaudio.com/community/threads/unity-gain-non-inverting-buffer-options.403759/post-7465303
In my personal experience, active crossover + separate amps for individual drivers is almost always superior.
It doesn't have to be more expensive if you build your own.
My 2 cents,
Patrick
I am using active filters indeed, with jfet buffers. 24dB slopes to protect the planar drivers from frying. Now I wanted to try something with much simples crossovers, this is actually my first endeavour in using a passive crossover - but definitely will be compared with "active", indeed with ideas as passive 1st order RCs at the amps input.
been there, done that. nothing wrong with active crossovers. they sound nice. i also used and modified yamaha d20400crossovers(with 8x pcm63p-y dac chips) with better results. but nothing beats high quality inductors in pure systems where no opamps, not even feedback on DAC IV stages. there is good sounding very complex audiosystems (like ML no32 or no380s preamps with tons of opamps and feebcaks) but I ment pure systems.
Everyone to his own opinion.
There is no universal truth in audio.
Cheers,
Patrick
There is no universal truth in audio.
Cheers,
Patrick
Here you go.
Deutschland has a number of useful parts shops who might ship to Switzerland. These guys, for example, have 15 mH inductors with about 1 ohm series resistance for prices ranging between 18 and 37 €.
If you want some fun, try impedance flattening your drivers. Sorting the subwoofer cleaned up kick drum transients and distinction from the bass guitar, and nailing the mids changed snare drums from a "cronk" to a "crack", while also (I did NOT expect this) placing layered voices precisely on the soundstage instead of having them vaguely in the middle. The impedance magnitude is less important than the impedance phase, which you want as close to zero degrees as possible to emulate a resistive load. It turns out reactive speaker loads interact with cables, and reducing the reactance reduces cable effects. In this article compare figures 28 & 29 with figures 9 & 7 respectively.
Ignore the flat amplitude response charts; I couldn't be bothered to throw FRD files into the simulation drivers.
