Harman Kardon Speaker PC350 User Manual

Primus PC350  
Infinity Loudspeaker Troubleshooting/Repair Tips  
Most customers prefer to do simple loudspeaker repairs themselves. By following the steps below, a majority of loudspeakers can be returned to  
their original factory performance with minimum effort. Choose the example that best describes the problem you are experiencing.  
Problem 1: No sound or distorted sound from one loudspeaker in a pair (or set)  
Connect the dead/distorting loudspeaker to a different amplifier channel (one that had a functioning loudspeaker connected to it). If it functions  
normally, the problem is not loudspeaker-related. If the loudspeaker still makes no sound or sounds distorted, a wire may have become loose  
or disconnected, the network (also known as a crossover) may be defective, the drivers (woofer, tweeter, etc.) may be defective or, in very rare  
cases, all may be defective.  
Refer to the wiring diagram and exploded view below. The network is a small circuit board found on the inside of the terminal cup, or mounted to  
an inside wall of the enclosure. It sends low-frequency sounds to the woofer, high-frequency sounds to the tweeter and, if applicable, mid-frequency  
sounds to the midrange driver. Make sure all wires are secure and connected. Look for components on the network that look burnt, “bulged,”  
or abnormal. If everything looks normal, connect the network to the drivers from another matching loudspeaker. MAKE SURE you attach the  
correct wires to each driver – mid- and low-frequency sounds can damage the tweeter! If there is still no sound or distorted sound, the network  
is defective. If there is clean undistorted sound, the drivers are defective.  
Problem 2: No sound or distorted sound from one or more (but not all) drivers in an enclosure  
Remove the problem driver(s) from the enclosure and make sure all wires are secure and connected. If they are, proceed with the following test:  
Woofer or midrange driver – Connect the driver’s + and – input terminals directly to the loudspeaker wires from your receiver/amplifier and play  
some music at a reasonable volume. If the driver now sounds normal (produces a clean, undistorted sound), the network is most likely defective.  
Tweeter – Replace the tweeter with a functioning tweeter from another loudspeaker. If the tweeter now functions normally (produces clean,  
undistorted sound), the original tweeter is defective. If the replacement tweeter also sounds distorted or produces no sound, the network is  
most likely defective.  
Problem 3: Loudspeakers distort, rattle or pop at higher volumes  
This is usually NOT a loudspeaker problem. Common causes are too much power (playing the loudspeakers too loud and causing them to distort),  
an amplifier with not enough power (the amplifier can’t produce the required volume without distorting), excessive equalization (turning the tone  
controls too far clockwise, and/or engaging the loudness/bass boost button on your receiver) or some combination of the above. If only one  
loudspeaker is exhibiting the problem, and you’re confident that it’s not caused by too little power/too much power/excessive equalization, see  
solutions for Problems 1 and 2.  
WIRING DIAGRAM  
EXPLODED VIEW  
Note: A Phillips screwdriver and “Torx” bit  
screwdriver T20 size are required to service  
this product.  
ITEM  
ITEM  
NO. DESCRIPTION  
1. PC350 CABINET BE/BK/CH  
2. GRILLE CUP  
3. ACOUSTIC DAMPING FILLER  
4. ACOUSTIC DAMPING FILLER  
5. CROSSOVER NETWORK  
6. SCREW, NETWORK  
7. TERMINAL CUP  
8. SCREW, TERMINAL CUP  
9. 5-1/4" WOOFER  
10. SCREW, WOOFER/MIDRANGE  
11. 5-1/4" TRIM RING, LEFT  
12. SCREW, TWEETER/TRIM RING  
13. 3" MIDRANGE  
QTY.  
1
8
1
1
1
4
1
4
2
16  
1
18  
2
PART NO.  
NOT FOR SALE  
327-010-00624-E  
NOT FOR SALE  
NO. DESCRIPTION  
QTY.  
1
1
1
1
1
4
1
1
1
1
1
1
PART NO.  
14. 5-1/4" TRIM RING, RIGHT  
15. TWEETER W/FACEPLATE  
16. INFINITY LOGO  
17. FRONT GRILLE (SILVER)  
FRONT GRILLE (BLACK)  
18. RUBBER FOOT PAD  
19. OWNER’S MANUAL  
20. WARRANTY CARD  
21. TOP/BOTTOM STYROFOAM SET  
22. PC350 OUTER CARTON FOR BE  
PC350 OUTER CARTON FOR BK  
PC350 OUTER CARTON FOR CH  
213-050-05145-0VAE  
23DA20AX-DT01-E  
316-ABS-05218-0VAE  
244-050-05229-0VAE  
244-050-05229-0BAE  
373-000-00124-E  
406-000-05514-E  
405-000-00312-E  
431-000-05962-E  
400-000-07230-E  
400-000-07232-E  
400-000-07231-E  
NOT FOR SALE  
013-7500-05283-E  
352-HM04018D497-E  
317-ABS-00165-E  
352-GM03520D850-E  
13PR80BZD-HW03-E  
352-FM04014D602-E  
213-050-05144-0VAE  
352-DM04525D597-E  
32PR60AZL-HW02-E  
 

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