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Detailed instructions for use are in the User's Guide.
[. . . ] 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 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. 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
HIGH-FREQUENCY TRANSDUCER 338035-001
EXPLODED VIEW
6 7 17
(2)
+
YEL/BLK
GRN/BLK GRN
16
(6)
10
LOW-FREQUENCY TRANSDUCER 339788-001
HK670 Cabinet Not for Sale
YEL
+
11
12
CROSSOVER NETWORK 339801-004
(6)
15
(6)
13 8
TO SERVICE THE HK670 1. Remove all (6) rubber grille retainers; this can be accomplished by carefully pulling them out of their cavities with long-nosed pliers or similar tool. Remove the (6) Phillips screws that are now exposed. Carefully separate the front baffle, with tweeter attached, from the cabinet.
9 14
ITEM NO. 14.
DESCRIPTION Owner's Manual Warranty Card Top & Bottom Pads Outer Carton Spike Foot Set Tweeter Tweeter Hold-Down Bar Front Faceplate Faceplate Gasket Woofer Grille Grille Retainer Port Tube Crossover Network
QTY. [. . . ] Carefully separate the front baffle, with tweeter attached, from the cabinet.
9 14
ITEM NO. 14.
DESCRIPTION Owner's Manual Warranty Card Top & Bottom Pads Outer Carton Spike Foot Set Tweeter Tweeter Hold-Down Bar Front Faceplate Faceplate Gasket Woofer Grille Grille Retainer Port Tube Crossover Network
QTY. [. . . ]
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