Paradigm Rock Monitor 80-SM - Manuel (Page 7)

6
Speaker Impedance with Multiple Speakers
If you are planning to use multiple speakers, first determine the number of
speakers your amplifier is capable of driving safely. Check your amplifier’s
specifications to determine minimum safe speaker impedance load (in ohms).
The MINIMUM load impedance of one Rock Monitor ™ speaker is:
• 8 ohms per channel when wired for Stereo Input
• 4 ohms per speaker when wired for Mono Input
Each additional speaker you connect will drop nominal impedance by
half. We strongly recommend using a Paradigm® VC-150 volume control
when connecting more than two speakers. See “Using a Volume Control,”
or see dealer for more information.
ABOUT SPEAKER CABLE
Before running speaker cable through walls, under walkways, patios, etc., check
local building code requirements or contact a qualified installer
(see dealer)
Preparing the Cable
Always use high-quality, moisture-resistant speaker cable
(see dealer).
1. Measure and mark the path from amplifier to speaker(s) and/or speaker to speaker to determine
length of cable required.
2. Add 2´ to 3´ feet extra to allow some play when installing.
3. Select correct gauge using the chart on page 7.
4. If cable is to run underground it must be rated for direct burial and/or enclosed in PVC pipe to
prevent deterioration over time. Contact a qualified installer before commencing installation in
this case
(see dealer).
5. Cut cable to required length.
6. Using wire strippers, strip the outer casing of the cable back about 2˝ at either end.
7. Strip inner insulation on both wires back about 1/
2
˝ at either end.
… you are now ready to evaluate your speaker placement.
PRECAUTION: Before proceeding, read and follow the safety precautions below.
Information on running speaker cable through walls, under walkways, patios, etc. is not provided in this
manual. If you are not comfortable with this type of installation, contact a qualified installer
(see dealer).
Before digging, verify location of gas lines and buried cables with local utility companies