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Synkron & Referens: "synchronous serial filter"

Most X-overs are parallel - it means the full input signal goes to each section of the x-over, as bass and treble and after that is threated individually. The treble unit is isolated from the bass signal and the Woofer is isolated from the treble signal. Individually is good in some aspects but there can be problem to get the sound synchronous from the different drive units, especially when it comes to transients. Normal parallel filter works perfect with a "perfect resistive load" But the drive unit is NOT!. The drive units, especially the woofer is a motor and a generator/microphone. It "records" a signal from the sound in the cabinet (and in the room) and send it backwards into the X-over. This leads to distortion and loss of information in the X-over.

Our entry level X-over Kont is parallel but the Synkron and the Referens models have the principle "synchronous serial filter". The + input is connected to Treble + and the - input is connected to the woofer -. In other words - in serial. If the impedance of a drive unit changes temporary during a transient or because of acoustic recorded feedback from the cabinet the information will not be lost to the same degree as in parallel filter - it will instead go to the other drive unit!

All Klangedang analogue X-overs are first order and therefore phase correct. Even Kont.

To put the X-over in a separate box and to get away from all the sounds and vibrations inside the speaker cabinet is a bigger improvement than you could expect.

Drive Units

The woofer has a die cast chassis, and the treble unit is the Danish "Golden dome".

The difference between damping and damping

Damping of resonances in speakers is a common subject of discussion. Often you put damping in every possible place. But every tone in the music is in fact a resonance! The tones lives a dangerous life in a hard damped speaker. The pitch can be modulated by hard damping. In Klångedang we use damping with care, and try to separate the acoustic damping from the damping of the structure-borne vibrations. We want to take care of the bass energy inside the cabinet for the bass-reflex port. But because the cabinet is very strong we need to take care of this structure vibrations. This is done in the stands and in the bottom of the cabinet.

Klångedang has low acoustic damping but high damping of the structure-borne vibrations.