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UNIVERSAL STEREO 
PREAMPLIFIER                       K2572 

 

- Gain (presettable) : 40 dB 
- Frequency response : 40Hz - 30KHz (-3dB) 
- Maximum input signal : 50mVrms (500mVrms) 
- Output impedance : 1Kohm 
- Power supply : 10 - 30 VDC, regulated 
- Supply current : typ. 5mA 
- Dimensions : 44 x 65 mm (1.73" x 2.56") 

 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 

 

Summary of Contents for High-Q K2572

Page 1: ...MPLIFIER K2572 Gain presettable 40 dB Frequency response 40Hz 30KHz 3dB Maximum input signal 50mVrms 500mVrms Output impedance 1Kohm Power supply 10 30 VDC regulated Supply current typ 5mA Dimensions 44 x 65 mm 1 73 x 2 56 ...

Page 2: ...2 VELLEMAN COMPONENTS NV Legen Heirweg 33 9890 Gavere Belgium www velleman be ...

Page 3: ...t cases you can easily solve problems yourself This text tells you all about The Kit you have built or intend to build was design by a team of highly skilled design engineers Before their design reaches the customer it has been tested and re tested over and over again This procedure guarantees you that every design actually works when it is put together in the right way But what if something does ...

Page 4: ... semiconductors for inspection and eventual exchange but keep in mind Our experienced technicians can tell the difference between a defective and a fried transistor and in several cases a stamp is much more expensive than a replacement semiconductor bought at the local store Any Velleman Kit if defective will be repaired or replaced at our option within 30 days of purchase Simply return it to the ...

Page 5: ...AA kit is fully compatible with the K2572 TECHNICAL DATA Power supply 10VDC minimum to 30VDC maximum from a stable source Current consumption no signal no load typically 5mA Amplification adjustable 40 dB Frequency range 40Hz 30KHz 3dB Output impedance 1KΩ Maximum input signal 50mV 500mV UNIVERSAL STEREO PREAMPLIFIER ASSEMBLY AND TOOLS Check that you have all the parts RECOMMENDED TOOLS Miniature ...

Page 6: ...umber description m m R1 22KΩ red red orange m m R2 22KΩ red red orange m m R3 1MΩ brown black green m m R4 1MΩ brown black green m m R5 10KΩ brown black orange m m R6 10KΩ brown black orange m m RV1 Trim pot 1KΩ m m RV2 Trim pot 1KΩ These may be flat as well as vertical 2 CAPACITORS These capacitors are not polarized so they can be inserted either way Inventory Sequence of assembly Reference Part...

Page 7: ...itor m m C3 1 µF electrolytic capacitor m m C5 1 µF electrolytic capacitor m m C6 1 µF electrolytic capacitor m m C7 1 µF electrolytic capacitor m m C8 1 µF electrolytic capacitor 4 SOCKET Inventory Sequence of assembly Part number description m m IC socket Mount IC socket where marked IC1 5 INTEGRATED CIRCUIT IC Inventory Sequence of assembly Reference Part number description m m IC1 8 pin integr...

Page 8: ... of the connecting leads The output amplitude of the right and the left channel are totally independently controlled by RV1 for the right channel and RV2 for the left channel As current consumption is very low voltage can be taken from any stable power supply of between 10VDC and 30VDC Lower the gain from 100 to 10 if the input signal is higher than 50mV this is done by replacing R5 and R6 with 10...

Page 9: ...K2572 9 Universal Stereo Mono Preamplifier PCB Layout and component placement ...

Page 10: ...K2572 10 Modifications and typographical errors reserved Velleman Components nv ...

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