Welcome to our FAQ (Frequently Asked Questions)

The warranty period is 5 years on all of PSI Audio products and on component and manufacturing defects.

If you register your product using this form, you will receive an additional year of warranty (total of 6 years).

Yes PSI Audio products will work in all countries.

It is important however that the voltage is set to match the voltage of the mains (i.e.  230 V or 115 V). This is normally done by the importer who will make sure the products are set up for the local network.

The procedure is explained in our manual:
“Check that the voltage value on the AC power selector is set correctly (according to your local AC power supply). If this is not the case, it will be necessary to adjust the main power supply with the following procedure. Carefully squeeze the two latches on either side of the fuse plug and pull the fuse holder out of its socket. Now replace the fuse for the different voltage setting with the correct value fuse according to the required voltage. The correct value of the fuse is printed next to the OnOff switch of your loudspeaker. Pull out the grey plastic cap which holds the fuse and turn it 180° so it shows the correct voltage setting through the outer window when placed back in its position. Now you can carefully push the complete fuse holder back into its place above the mains connector”

Yes PSI Audio products will work in all countries.

It is important however that the voltage is set to match the voltage of the mains (i.e.  230 V or 115 V). This is normally done by the importer who will make sure the products are set up for the local network.

The procedure is explained in our manual:
“Check that the voltage value on the AC power selector is set correctly (according to your local AC power supply). If this is not the case, it will be necessary to adjust the main power supply with the following procedure. Carefully squeeze the two latches on either side of the fuse plug and pull the fuse holder out of its socket. Now replace the fuse for the different voltage setting with the correct value fuse according to the required voltage. The correct value of the fuse is printed next to the OnOff switch of your loudspeaker. Pull out the grey plastic cap which holds the fuse and turn it 180° so it shows the correct voltage setting through the outer window when placed back in its position. Now you can carefully push the complete fuse holder back into its place above the mains connector”

PSI Audio products are available in 3 different colours:

– Studio Red
– Metallic Black
– Pure White

Classes G and H offer enhancements to the basic class AB design. Class G uses multiple power supply rails of various voltages, rapidly switching to a higher voltage when the audio signal wave has a peak value that is a higher voltage than the level of supply voltage, and switching back to a lower supply voltage when the peak value of the audio signal reduces. By switching the supply voltage to a higher level only when the largest output signals are present and then switching back to a lower level, average power consumption, and therefore heat caused by wasted power is reduced.
Class H improves on class G by continually varying the supply voltage at any time where the audio signal exceeds a particular threshold level. The power supply voltage tracks the peak level of the signal to be only slightly higher than the instantaneous value of the audio wave, returning to its lower level once the signal peak value falls below the threshold level again. Both classes G and H therefore require considerably more complex power supplies, which adds to the cost of implementing these features.

The warranty period is 5 years on all of PSI Audio products and on component and manufacturing defects.

If you register your product using this form, you will receive an additional year of warranty (total of 6 years).

In a multi-way speaker system, the crossover filters as well as the transducers inevitably introduce phase distortion and consequently also variations of group delay.

The group delays are higher in low frequencies than in high frequencies. Theses create a separation in time between the low and high frequencies which typically gives multi-way speakers a “hollow” sound.

In a limited frequency range, an all-pass filter will allow to alter the phase without influencing the amplitude.

The CPR system is made up of several all-pass filters each acting in a specific range of frequency and together obtaining a Compensated Phase Response. This then provides a constant group delay that is kept to the bare minimum through our entirely analogue technology.

Thanks to the CPR system, the placement of sound in the actual sound space is perfectly accurate. Amongst others, this technology allows designing a surround sound systems with different types of PSI Audio speakers whilst maintaining a perfectly accurate phase response.