Minimum Impedance Load is 1-Ohm ACS COMPACT CLASS D AMPLIFIER Owners Manual Please read through this manual to familiarize yourself with your new amplifi er. Should your PowerBass AutoSound mobile amplifi er ever require service, you will need to have the original dated receipt.
Page 2
In the interest of safety, PowerBass USA highly recommends listening at lower volume...
Remote Level Control Port(for optional controller) INSTALLATION EXPERIENCE Installation of PowerBass mobile amplifiers requires detailed knowledge of electronics wiring and proper speaker impedance. We strongly recommend installation by an authorized PowerBass dealer. This Owners Manual only provides general installation and operation instructions. If you have any reservations about your installation skills, please contact your local PowerBass dealer for assistance.
MOUNTING THE AMPLIFIER Fig.1 Mounting Amplifier Due to the high power output of the PowerBass Autosound mono amplifiers, considerable heat may be produced when the unit is in operation. For this reason the amplifier should be mounted in a location which will allow air to circulate freely.
The floor of the trunk, under the driver’s seat, or on the back of the rear seat. For alternate installation locations, please consult your authorized PowerBass Dealer. NOTE: Do not use a drill with driver bit to mount the amplifier. Excessive force could cause the plastic mounting feet to crack.
0dB1 LO W MI NM 15Hz 50H z 30Hz 250H z INPU T REMO TE LEVEL ACS-500D 1 OHM Stable • Mono Class D Amplifier FUSE SPEAKE R BATT +G RE M POWE R STATUS SU BW OOFER OUTPU T...
Page 7
12. REM (Remote Input Terminal) All PowerBass AutoSound amplifiers can be turned on by applying 12 volts to this terminal. This can be found on the rear of the source unit in the form of an electric antenna output, or a remote output. If this is not available you can wire to the ACC position on the key.
Page 8
Your PowerBass Autosound Mono amp will draw large levels of current, so use the largest gauge power/ ground cable possible. Using too small of power cable can result in unnecessary over-heating of the ampli- fier, distortion at high volume levels and might even cause the thermal protection circuitry to shut-off the amplifier.
Page 9
BATT+ (Power) This amplifier should be wired directly to the vehicle battery using the appropriate size cable. Start at the vehicle battery and run the power cable through to the amplifier. Avoid running the power cable over engine components and near heater cores. The use of an inline fuse or circuit breaker is a must; this will prevent the risk of a potential fire caused by a short in your power cable.
Page 10
REM on the amplifier. FUSE REQUIREMENTS While the panel on your PowerBass amplifier incorporates one or more fuses, these do nothing to protect the vehicle from a dangerous short circuit. It is absolutely vital that the main power lead to the amplifier(s) in the system be fused within 18-inches (45cm) of the connection to the vehicle battery.
HIGH I NPUT LO W MI NM 15Hz 50H z 30Hz 250H z INPU T REMO TE LEVEL ACS-500D 1 OHM Stable • Mono Class D Amplifier FUSE SPEAKE R BATT +G RE M POWE R STATUS SU BW OOFER...
Page 12
LO W MI NM 15Hz 50H z 30 Hz 250H z Factory INPU T REMO TE LEVEL ACS-500D 1 OHM Stable • Mono Class D Amplifier LEFT + LEFT – Not Used RIGHT – Gray RIGHT + Gray w/ Black Stripe...
SET UP ADJUSTMENTS Fig.5 Gain Control Input Gain Adjustment This control allows you to match the input level of the amplifier to the output level of your head unit. Matching the input can be accomplished in four simple steps: Make sure that the remote gain control is not plugged in until after the master gain control is set. Set the GAIN control on the amplifier to Min (completely counter clock wise).
Page 14
BASS EQ 12 dB Fig.8 Selectable Bass EQ Bass EQ Switch This special feature is designed to provide you more powerful sound quality, and it allows you to boost the Bass EQ to 12dB. Keep in mind that more is not always better. Setting the control to the max (12dB) will stress the amplifier and the speakers and could result in damage.
Page 15
SPEAKER WIRING AND CONFIGURATIONS Speaker Load Keep in mind your PowerBass Autosound Class D amp is a high power amplifier and not a high current amplifier. In other words this amplifier requires a minimum impendance of 1-Ohm mono to operate trouble free.
Page 16
Speaker Output Configurations 1-OHM STABLE DESIGN Minimum Impedance Load is 1-OHM 1. A SINGLE VOICE COIL SUBWOOFER SPEAKER FUSE SPEAKE R BATT +G RE M POWE R STATUS SU BW OOFER OUTPU T 25 A 25 A 1-OHM SUBWOOFER (min) Fig.10 A Single Voice Coil Subwoofer (1~4-OHM) 2.
Page 17
Maintaining proper impedance is critical when wiring the Class D model amplifiers. Improper wiring can cause severe damage to BOTH the woofer and the amplifier. Detailed wiring diagrams are supplied with all PowerBass woofers. IF YOU ARE NOT EXPERIENCED OR UNCOMFORTABLE READING THE WIRING DIAGRAMS CONSULT YOUR AUTHORIZED POWERBASS DEALER BEFORE YOU ATTEMPT TO WIRE THE SYSTEM.
NOTE: If the Status L.E.D. is activated and glows RED with no speakers connected to the amplifier, and all the power connections are correct, this would indicate an internal problem with the ampli- fier. Contact PowerBass USA or your local dealer.
SPECIFICATIONS FOR AUTOSOUND COMPACT CLASS D MONO AMPLIFIERS ACS-500D ACS-1000D Two Channel Models Power Output @ 14.4 VDC Input 4 Ohms RMS Power (Watts) 200 x 1 400 x 1 2 Ohms RMS Power (Watts) 300 x 1 600 x 1...
Page 23
Some states do not allow limitations on the length of an implied warranty, so this limitation may not apply. No person is authorized to assume for PowerBass any other liability in connection with the sale of this product.
Page 24
PowerBass Autosound – A division of PowerBass USA, Inc. 2133 S. Green Privado – Ontario, CA 91761 Tel. (909) 923-3868 – Fax (909) 923-8048 www.powerbassusa.com...
Need help?
Do you have a question about the ACS-500D and is the answer not in the manual?
Questions and answers