Bose 901 Series II User Manual download pdf (Page 14)

FIG. n

Since the second pair of speakers is connected in parallel with the first pair, a second Equalizer is not

required. For this reason, the BOSE 901 is available at lower cost as an "Add-On Pair," without the Equal

izer. To connect the second pair of speakers, simply connect the 8 OHMS terminal of the second left

speaker to the 8 OHMS terminal of the first left speaker. Connect the COM terminal of the second left

speaker to the COM terminal of the first left speaker. Follow a similar procedure for the right speaker.

Note: If your amplifier has separate output connections for different speaker impedances, you should

connect each pair of speakers to the 4 OHM terminals of your power amplifier.

V. IN CASE OF DIFFICULTY

If you suspect that there is a problem with your 901 system, it is worth a few minutes of your time to determine

whether your 901s are defective; and if so. that you return only that part of the system which is defective.

If one speaker sounds defective, switch the left and right channel speaker cables at the point where they are connected

to the amplifier or receiver. If the trouble moves to the other speaker, it is not in the speakers or in the speaker wiring.

As noted earlier in this manual, if you hear distortion with both speakers at high sound levels which disappears when

you turn the volume down or switch the BELOW 40 switch to CONTOUR, you are probably overloading the ampli

fier. If this is the case, leave the BELOW 40 switch in the CONTOUR position for the recording you are playing.

(See Section IV, 0.1

If the trouble seems to be in the Equalizer, be sure that the system operates properly with the Equalizer out of the

circuit. Check this by switching the preamplifier or receiver TAPE MONITOR switch to the OUT or NORMAL

position. Be certain that all cables are connected properly and that the cables are not defective.

If the trouble persists, contact your dealer. He will arrange for service either by having the unit serviced at a Factory-

Authorized Service Agency or at the BOSE Factory. If it becomes necessary to return your unit to the Factory, he can

obtain a Return Authorization Number which must appear on the outside of the carton when the unit is returned to

the Factory. Shipments arriving at the BOSE Factory without a RETURN AUTHORIZATION NUMBER on the outside

of the carton are not accepted, but are returned freight collect to the sender. Units must be returned prepaid. 00 NOT

SHIP VIA PARCEL POST.

VI. TECHNICAL INFORMATION

A. The System is packed in Two Cartons Marked "Part I" and "Part 2"

Weight; Part 1 — 44 pounds

Part 2-42 pounds

Carton Dimensions; 22-3/4" W x 15" H x 16-1/2" 0

1 2 ... 9 10 11 12 13 14 15 16

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Bose 901 Series II User Manual Page 14