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Vocal Zapper
Whether you want to sing Karaoke to essentially any
recording, practice and improve your vocals or just feel
like a rock star for a few minutes, then the Vocal Zapper
is for you. This low-cost device, when used in conjunc-
tion with any coventional stereo system, removes the
lead vocal from most CDs, records and tapes, and puts
There are somewhat more serious uses for the Zapper,
too; for example, with the lead vocal removed, you'll hear
harmony and background parts on records that you've
never heard before. Some aspiring singers have used
the Vocal Zapper to record demo tapes featuring their
voice in place of another singer's. Perhaps best of all,
this is a simple, non-critical circuit that is easy to
021402
Model 6730
Assembly and Using Manual
your voice in its place.
construct and use.
Vocal Zapper
1
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Summary of Contents for Paia Vocal Zapper 6730
- Page 1 Vocal Zapper Model 6730 Assembly and Using Manual Whether you want to sing Karaoke to essentially any recording, practice and improve your vocals or just feel like a rock star for a few minutes, then the Vocal Zapper is for you. This low-cost device, when used in conjunc- tion with any coventional stereo system, removes the lead vocal from most CDs, records and tapes, and puts your voice in its place.
- Page 2 These notes may be in the yellow "MISSING PARTS" postcard. If parts are missing please notify PAiA at p405.340.6300, f340.6378, or missing@paia.com . Notice that each step in the manual is marked with...
- Page 3 Modern electronic components are small (in case you hadn’t noticed) and values marked on the part are often difficult to see. Another handy tool for your bench will be a good magnifying glass. Also use the magnifier to examine each solder joint as it is made to make sure that it doesn’t have any of the problems described in the SOLDERING section which follows.
- Page 4 Fig 1. Parts are mounted on the circuit board in the locations shown. Solder each of the fixed resistors in place following the parts placement designators printed on the circuit board and the assembly drawing (figure 1.). Note that the fixed resistors may be mounted with either of their two leads in either of the holes provided.
- Page 5 ( ) Install 100K trimmer potentiometer R11 and solder in place. ( ) Install 100K trimmer potentiometer R12 and solder in place. Install the ceramic disc and mylar capacitors. Like resistors, either of the two leads can go in either of the holes provided. The value of the capacitor will be marked on the body of the part.
- Page 6 Install the integrated circuit. Note that the orientation of the IC is keyed by a notch at one end of the case which aligns with the semicircular key on the designator printed on the circuit board. Use particular care when installing this part, like any other semiconductor it is heat sensitive pin 1 and should not be exposed to extraordinarily high...
- Page 7 Continue by wiring the front panel parts as shown in Fig 3. Notice that Individual solder lugs are identified by part number and lug number. For example, S1-2 means the lug labeled “2” of the switch S1. ( ) Use a piece of excess resistor lead to connect S2-6 to S2-3. Solder the connection at S2-3 but a second wire will connect Note: Be careful when to S2-6 later and both wires soldered at that time.
- Page 8 Before proceeding with testing and calibration, thoroughly check the bottom of the circuit board for solder bridges and cold solder joints. Clip off any compo- nent leads that extend beyond the height of the rubber feet. Recheck parts placement and values. Once satisfied that all is well, snap two fresh 9v. transistor radio type batteries into the battery clips with the power off.
- Page 9 Now comes the big test. Switch S1 to the Zap mode, and the lead vocal should drop out as if by magic. If it doesn't, adjust trimpot R12 for the maximum amount of cancellation (this should occur somewhere near the midpoint of rotation).
- Page 10 CAVEATS There are a couple of fine points. The Vocal Zapper will not work with mono recordings, since in this case everything is center channel material. Also, any reverb added to the vocal will tend to remain -- but in most cases, the reverb is at a low enough level to not be objectionable (and if you're singing along with the record, it even helps to have little remaining reverb underneath your vocal to add depth).
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Page 11: In Case Of Difficulty
Give as full a description of the malfunction as possible; in many cases your problem may be diagnosed by mail. If no diagnosis can be made, you will be supplied with a repair address and shipping instructions. - Page 12 18" lengths insulated wire #4 "L" Bracket 4-40 X 1/4" Machine screw 4-40 Hex Nut Stick-on Rubber Feet 9V Battery Snap Circuit Board Front Panel PAiA Electronics, Inc 3200 Teakwood Ln. Edmond, OK 73013 phn 405-340-6300 fax 405-340-6378 email: info@paia.com Vocal Zapper 021402...
- Page 13 Vocal Zapper Model 6730 Ilustrations and Supplemental Infomation This wrapper page for the Vocal Zapper manual may be removed for easy access to the illustrations. BEFORE GOING ANY FURTHER, READ THIS The Vocal Zapper is most easily used by placing it between a CD player and CD or Aux inputs of a component amplifier and speaker system.
- Page 14 Fig 2. Show mechanical assembly. Note different orientation of switches and threaded and unthreaded holes in "L" bracket. The sleeve ("S") lug attaches to the threaded bushing. Fig 3. Shows panel wiring. Switch lug numbers are only on illustrations and not on the switch.
- Page 15 More on connecting and testing the 6730 Vocal Zapper The 6730 Vocal Zapper can easily connect to the external tape recorder connectors on a stereo receiver. These are specified as Tape Out and Tape Monitor in the manual for the kit, but basically they corresespond to line-level outputs and inputs.
- Page 16 pins by counting up in a ccw direction around the part from the notch or pin 1 indicator. This should measure +7 to 8V DC. If the tester is digital readout, it will autopolarize and you can go on and measure the negative DC on pin 4 for a -7 to 8V DC reading.