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PS1220M
Troubleshooting
Problem
Possible Cause
Amplifier does
No power to +12V terminal
not turn on
No power to REM terminal
Blown main fuse at battery
Blown fuse at amplifier
Faulty ground
Volume control
Input level control adjusted too
too sensitive
high
Distorted sound
Input level control adjusted too
high
Blows fuse(s) at
Power wires connected back-
amp
wards
Internal problem with amp
Engine noise /
Ground loop(s)
Alternator whine
Faulty ground at amp
Faulty ground at head unit
Inductive coupling
Input level on amp set too high Readjust input level (refer to page 8)
Thermal protec-
Amplifier driving 2 ohm load
tion activated
for long durations
Short circuit pro-
Blown speakers
tection activated
Speaker wire(s) shorting to
ground
Defective crossover
Low impedance
Amp connected to improper
protection acti-
load
vated
Amp will not drive a 1 ohm
mono load, 2 ohm minimum in
mono configuration
Speakers defective/blown
Faulty passive crossovers
Poor bass
Speakers out of phase
response
Note: If the protection light is activated with no speakers connected to the amplifier, and
all the power connections are correct, this would indicate an internal problem with the
amplifier.
Corrective Action
Check fuse(s)
Check head unit fuse(s) and wiring
Replace fuse and identify cause of failure
Replace fuse and identify cause of failure
Reground main power ground to bare metal
chassis
Readjust the input level (refer to page 8)
Readjust the input level (refer to page 8)
Reconnect power wires properly
Take unit for service
Use good quality shielded RCA cables
Reground amp to clean bare metal chassis
Reground head unit to clean bare metal chas-
sis
Reroute RCA and/or speaker wires away from
factory harnesses
If the amplifier "thermals" frequently while driv-
ing subwoofers, a fan may need to be installed
to keep amp cool
Check all speakers
Check for faulty wiring
Faulty passive crossover
Check speaker connections
Verify that speakers are connected properly
Check speakers
Check crossovers
Check speaker polarity; reverse the
connection to one speaker only if two
subwoofers are connected to the amplifier.
Specifications
CEA Power Ratings
PS1220M
Power Output: 220 watts RMS X 1 channel into 4-ohms @ < 1% THD+N
Additional Power Output: 265 watts RMS X 1 channel into 2-ohms @ < 1% THD+N
Dynamic Power: 440 watts X 1 channel into 4-ohms
Dimensions: 11 ¼" X 12" X 2 ¼" (286mm X 302mm X 55.5mm)
General Specifications
Frequency Response: 10Hz to 200Hz (-3dB)
Signal to Noise Ratio: 100dBA below reference. (Reference: 1 watt, 4-ohms)
Input Sensitivity: 300mV to 8V for full power output at clipping (1% THD+N)
Bass Boost: 0 to +18dB @ 45Hz, continuously variable
Crossover: 12dB/octave, 40Hz to 200Hz, Butterworth alignment
Reference Supply Voltage for rated power: 14.4VDC
Power Supply: 14.4VDC, (11 to 16VDC allowable), negative ground
Specifications subject to change without notice.
12-Month Limited Warranty
AUDIOVOX CORPORATION (the Company) warrants to the original retail purchaser of this product that
should this product or any part thereof, under normal use and conditions, be proven defective in material or
workmanship within 12 months from the date of original purchase, such defect(s) will be repaired or replaced
with new or reconditioned product (at the Company's option) without charge for parts and repair labor. To
obtain repair or replacement within the terms of this Warranty, the product is to be delivered with proof of
warranty coverage (e.g. dated bill of sale), specification of defect(s), transportation prepaid, to the warranty
center at the address shown below.
This Warranty does not extend to the elimination of car static or motor noise, to correction of antenna
problems, to costs incurred for installation, removal, or reinstallation of the product, or damage to tapes,
compact discs, accessories, or vehicle electrical systems. This Warranty does not apply to any product or part
thereof which, in the opinion of the Company, has suffered or been damaged through alteration, improper
installation, mishandling, misuse, neglect, accident, or by removal or defacement of the factory serial number/
bar code label(s) or markings. THE EXTENT OF THE COMPANY'S LIABILITY UNDER THIS WARRANTY IS
LIMITED TO THE REPAIR OR REPLACEMENT PROVIDED ABOVE AND, IN NO EVENT, SHALL THE
COMPANY'S LIABILITY EXCEED THE PURCHASE PRICE PAID BY PURCHASER FOR THE PRODUCT.
This Warranty is in lieu of all other express warranties or liabilities. ANY IMPLIED WARRANTIES, INCLUDING
ANY IMPLIED WARRANTY OF MERCHANTABILITY, SHALL BE LIMITED TO THE DURATION OF THIS
WRITTEN WARRANTY. ANY ACTION FOR BREACH OF ANY WARRANTY HEREUNDER INCLUDING ANY
IMPLIED WARRANTY OF MERCHANTABILITY MUST BE BROUGHT WITHIN A PERIOD OF 30 MONTHS
FROM DATE OF ORIGINAL PURCHASE. IN NO CASE SHALL THE COMPANY BE LIABLE FOR ANY
CONSEQUENTIAL OR INCIDENTAL DAMAGES FOR BREACH OF THIS OR ANY OTHER WARRANTY,
EXPRESS OR IMPLIED, WHATSOEVER. No person or representative is authorized to assume for the
Company any liability other than expressed herein in connection with the sale of this product.
Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of
incidental or consequential damage so the above limitations or exclusions may not apply to you. This Warranty
gives you specific legal rights and you may also have other rights which vary from state to state.
U.S.A: Audiovox Corporation, 150 Marcus Blvd., Hauppauge, NY 11788, 1-800-323-4815
CANADA: Call 1-800-323-4815 for location of warranty station serving your area.
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