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OPERATION MANUAL MODEL : CSP3 - CLASSIC STEREO PREAMP

REV 1 MAR 2018

 

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WWW.DECWARE.COM

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Reference Vacuum Tube Preamplifier

CSP3

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Summary of Contents for CSP3

Page 1: ...OPERATION MANUAL MODEL CSP3 CLASSIC STEREO PREAMP REV 1 MAR 2018 PAGE OF WWW DECWARE COM 1 14 Reference Vacuum Tube Preamplifier CSP3...

Page 2: ...SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL To prevent the risk of electrical shock do not remove cover or bottom No...

Page 3: ...calling us directly or you by e mail If you have any issues check the web site s contact page for up to date e mail addresses and phone hours We also have a strong online support forum that is very a...

Page 4: ...have taken delivery of your preamp during cold weather please allow it to come to room temperature before you plug it in and try to use it You will need three pairs of high quality interconnects and...

Page 5: ...4 POWER CORD 3A FUSE POWER SWITCH RIGHT OUTPUT MONO OUTPUT LEFT OUTPUT RIGHT INPUT B RIGHT INPUT A LEFT INPUT A LEFT INPUT B RIGHT OUTPUT LEVEL ADJUSTMENT 5Y3GT 5U4G 5AR4 6N1P 6922 6N1P 6922 6N1P 6922...

Page 6: ...ved and installed Tube pins are equally important and should be cleaned every time a tube is installed Once again this will keep the tube sockets clean which is critical for maintaining top fidelity T...

Page 7: ...SP3 contains a silver input selector switch and the switch box shown above is also using silver switching and silver Teflon internal wiring This component is called the ZSB and available on the Decwar...

Page 8: ...annels can be individually adjusted however it is nice to have the left and right rear 9 pin tubes matched when possible so that you do not have to correct for channel imbalances that might otherwise...

Page 9: ...d 9 pin tubes are used the tube life will be whatever the advertised lifespan is on the tube data sheet In most cases this will be around 6000 hours for a new tube Rectifier tubes are the first line o...

Page 10: ...yet If you didn t hear any hum or noise increase when you connected your first source that means that A your cables are probably good and B there is no ground loop between the components No add your s...

Page 11: ...loud too fast you can turn down the input level controls The CSP3 can be built with either a pair of 1 4 inch headphone jacks or a pair of 4 pin XLR jacks or one of each Also it can be built with dua...

Page 12: ...le to adjust the gain structure with these output level controls to effect the voicing you can also do a great deal of voicing with tubes Voicing The CSP3 can be voiced through gain structuring and th...

Page 13: ...ound doesn t improve then put the new tubes back in the boxes and try again in 6 months You can think tube replacement for your CSP3 in 3 levels 1 The first tube to replace is the rectifier If it s ge...

Page 14: ...ncluded Consumption 65 watts Input jacks RCA Output jacks RCA Headphone jacks dual 1 4 4 pin XLR or 3 pin XLR Warranty lifetime to original owner 90 days on tubes Service For service please contact us...

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