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Design consideration of KingRex SLAP 

Design consideration for the KingRex SLAP

The slightest demand, the greatest satisfaction   

 

What are the differences between switching power, linear power, and battery power?

After introduction of the T20 series audio amplifier to the public, KingRex sought the next evolutionary step in 

sonic excellence while preserving the existing value for our customers. Currently we provide two power supply 

solutions for our T 20 series amplifiers, a power adaptor(switching type) and a power supply unit – PSU (linear 

power type). We believe these two products match most audiophile demands because of their reasonable price and 

excellent quality but also they sound good. Nevertheless, to satisfy the highest level of audiophile expectation for 

low noise and distortion, we have developed a pure power source – the SLAP (Sealed Lead-Acid battery power 

supply unit) 

    All amplifiers need a continuous current supply during operation. If the demands of the amplifier exceed the 

capabilities of the power of the power supply during transient conditions deep bass passages then detail loss, 

smearing and distortion can occur. The three most common power sources: switching power adaptor, linear 

power supply, and battery power supply unit. 

The switching power adaptor is the most convenient and common power source however it is not a good 

selection for the music connoisseur who prefers sonic performance over convenience as it has the most noise 

and distribution due to the high-frequency switching and harmonics in its design.

    The linear power supply is a better choice for audiophiles. It has less noise and distortion than the switching 

power adaptor, however, during the AC to DC conversion and rectification process, there is still minute amounts 

of unavoidable noise and distortion. That’s because the AC power is required to traverse significant circuitry 

such as transformer, diodes, voltage regulators, and other components.

    To eliminate any potential for noise during the rectification and filtering process we have eliminated it 

(during operation) and created the SLAP.  

Summary of Contents for SLAP

Page 1: ...SLAP USER MANUAL SLAP USER MANUAL...

Page 2: ...If the PSU OFF the charging process is still working but it can not be show the monitoring status through the LED as it won t light A Content B Introduction C Specification D Design Consideration of...

Page 3: ...50mA Stage 2 current 400mA Stage 3 float charge current 200 400mA Charging current Charged light turns on and float charge starts when the charge current is approx 80mA when the battery charge voltage...

Page 4: ...ration If the demands of the amplifier exceed the capabilities of the power of the power supply during transient conditions deep bass passages then detail loss smearing and distortion can occur The th...

Page 5: ...table and will not deteriorate When the output power is relatively high more DC current will be drawn from the capacitors putting a strain on the rectifier diodes and causing AC ripple voltage When a...

Page 6: ...ply unit will be the best solution for fully isolated power source from AC environment as the internal AC power is only used for charging The AC power source will be totally isolated one switching but...

Page 7: ...US firm The maximum current capability is 6 amps 5 AC input fuse and DC output fuse for safety consideration 6 Battery Low Voltage monitoring circuit to ensure extended automatically shuts the system...

Page 8: ...shock disconnect the SLAP from the mains supply before installing an amplifier Reconnect the power cord only after signaling interconnections have been made 1 Do not dispose of batteries in a fire th...

Page 9: ...ecrease the charging current from 200 400mA into 80mA maintain charge b Green Charging completed and still keeping maintain charge 80mA Advantage Battery charging should be high current while it began...

Page 10: ...BLE SLAP TO CHARGE MODE PSU ON SWITCH ENABLE SALP DC OUTPUT ON AC FUSE SLOT 2A 250V FUSE FUSE FOR DC OUTPUT 3A 250V DC OUTPUT BATTERY DC POWER OUTPUT PSU ON CHARGER ON DC OUT OFF PSU ON CHARGER OFF DC...

Page 11: ...erate the SLAP where the temperature and humidity is outside the specified limits Charge the battery The SLAP charges its battery when CHARGER ON SWITCH IS ON charge the battery for 24 hours in the in...

Page 12: ...and hex screw driver to open the front panel upside screw 3 Using a phillips screw driver to unlock the main circuit board 4 Carefully lift off main circuit board using a phillips screw driver to unl...

Page 13: ...ry 6 months During extended storage in environments where the ambient temperature is 30 to 45 86 to 113 charge the SLAP s battery every 3 months Trouble Shooting PROBLEM POSSIBLE CAUSE ACTION TO TAKE...

Page 14: ...welcome to contact KingRex Technology Co LTD directly if you need any information or help Our contact information is listed on the last page of this user guide Our best wishes We only use the best raw...

Page 15: ...e change for service components The warranty is annulment by following condition The damage of machine by artificial damage improper using repair or refit by yourself nature disaster lightening strike...

Page 16: ......

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