ATM 600.1D ATM 900.1D ATM COMPACT CLASS D AMPLIFIER Owners Manual Please read through this manual to familiarize yourself with your new amplifier. Should your PowerBass AutoSound mobile amplifier ever require service, you will need to have the original dated receipt.
Thank you and Congratulations Thank you for your decision to purchase a PowerBass USA Autosound mobile amplifier! Our Autosound amplifiers are the result of extensive engineering, testing, and bullet proof construction. They feature the latest in D Class microprocessor technology. Their versatility enables compatibility with optional signal and audio processors. These high quality MOSFET amplifiers may be configured to allow maximum flexibility in designing different subwoofer options.
TECHNICAL FEATURES • • • • • • • • • • • • • Mono Block Amplifier for Subwoofer Latest Class D Technology High and Low Level Line Input Double Sided Circuit Board Construction MOSFET Power Supplies for High Power Output and Best Stability into Low Impedance Loads Soft Delay Remote Turn On/Off Circuit to Eliminating Pops and Clicks Variable Low Pass Electronic Crossover Built-in Fully Adjustable Bass Boost Self Diagnostic Protection Circuit with LED Status Indicator for; Impedance Over-load, Speaker Short C
INSTALLATION PRECAUTIONS NOTE: Proceed only if you are a qualified installer, otherwise; see your Authorized PowerBass Dealer to professionally install this amplifier. Always wear protective eyewear when using tools. • • • • • • • • Turn off all stereo and other electrical devices before you begin. Disconnect the negative (-) lead from your vehicles battery. Locate all fuel lines, brake lines, oil lines, and electrical cables when planning the install.
MOUNTING LOCATION Find a clear and well ventilated area to mount your amplifier that is unobstructed by any objects that will cause harm or block ventilation. Despite the fact that this amplifier is compact, it still needs air to cool the heatsink fins. Do not mount under a carpet or an area with dead or stagnant air. Without proper air flow the amplifier may overheat and go into protection where the thermal overload circuitry will shut down the amplifier.
CONTROL PANEL LAYOUT Fig.2 Panel Layout 1. POWER Indicator The clear L.E.D. lights BLUE when the power is on. 2. STATUS Indicator This L.E.D. turns RED when the built-in protection circuitry is activated. This indicates a problem with the system in relation to the amplifier (see Troubleshooting Tips). 3. REMOTE Gain This is the connector port for the Remote Gain Control. Now the amplifiers secondary gain circuit can be adjusted from the driver’s seat. 4.
5. LINE OUT (RCA) Jacks RCA style pass through output jacks allow for a signal to be sent to other amplifiers in a daisy-chain configuration. Only one Remote Bass Control can be used when multiple bass amplifiers are connected. 6. LINE IN (RCA) Jacks These RCA style input jacks are for use with source units that have RCA line level outputs. A source unit with a minimum output of 500mV is required for proper operation. However, this input will accept levels up to 4Vrms. 7.
13. FUSES For convenience most PowerBass AutoSound amplifiers utilize common automotive ATC type fuses. For continued protection in the event that a fuse blows, replace the fuse only with the same value. CAUTION: These power fuses on the amplifier chassis are for protecting the amp against over current situation. To protect the vehicles electrical system, an additional fuse should be used within 18-inches of the battery on the 12V+ cable. ATM 600.1D 25A x 3 ATM 900.1D 30A x 3 14.
POWER WIRING AND SIGNAL CONNECTIONS *** WARNING *** Disconnect the negative (-) battery terminal before you start any wiring work! The battery of your car audio system must be disconnected until the entire wiring installation is completed. Your PowerBass Autosound Class D amp will draw large levels of current, so use the largest gauge power/ ground cable as possible.
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.
Now it’s time to connect the power and ground cables to the amplifier. Cut both cables to length. Strip off 1/2 inch (12mm) of the insulation so that the bare wire fits all the way in the terminal block on the side panel of the amplifier, seating it firmly so no bare wire is exposed. Use a Philips screwdriver to loosen the BATT+ and the GND connections on the amplifier. Insert the ground first, and then the +12V and please make sure that you place them into the correctly marked terminals.
RCA INTERCONNECT WIRING Fig.4 Low Level Input using RCA Choose the correct length and style of RCA interconnects for your needs. Always use high quality RCA audio cables (not supplied) for signal connections—those with multiple layers of shielding or a twisted pair variety provides better noise rejection. Be extra careful when routing your RCA audio interconnect cables. Car environments are notorious for poorly insulated wires.
HIGH LEVEL CONNECTIONS (Optional) High Level inputs have been included to connect the amplifier to a radio without low-level outputs (i.e. factory radio). This connection will allow you to connect directly to the speaker output of the radio without the need of an external adapter. Determine the type of radio you have and make one of the following connections. Do not use the High Level inputs if you have already wired the Low Level Inputs.
SET UP ADJUSTMENTS Input Gain Adjustment Fig.5 Gain Control 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: 1. Make sure that the remote gain control is not plugged in until after the master gain control is set. 2. Set the GAIN control on the amplifier to Min (completely counter clock wise). 3. Turn on the head unit and adjust volume to 2/3 maximum, and set the BASS and TREBLE to zero.
0dB 30Hz +18dB Fig.8a Bass EQ Control 80Hz Fig.8b Bass FREQ Control Adjusting the BASS EQ and BASS FREQ Controls The BASS EQ is adjustable from 0-18dB, thus allowing you to tailor your sound system to your particular tastes. The BASS FREQ lets you choose the frequency that the BASS EQ will boost from 30Hz - 80Hz. You will want to experiment with both controls—begin your adjustments at low volume. First turn the BASS EQ control about half-way up. Next, vary the BASS FREQ control up and down.
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 it requires a minimum impedance of 1 ohm. If you are unsure of calculating impedance loads please consult your Authorized PowerBass Autosound Dealer before damaging your amplifier.
Speaker Output Configurations 1. A SINGLE VOICE COIL SUBWOOFER SPEAKER Fig.10 A Single Voice Coil Subwoofer (1~4 ohm) 2. TWO SINGLE VOICE COIL SUBWOOFER SPEAKERS (Note: Don’t connect speaker impedance under 1 ohm) Fig.
3. ONE DUAL VOICE COIL SUBWOOFER SPEAKERS (Note: Don’t connect speaker impedance under 1 ohm) Fig.12 One Dual Voice Coil Subwoofer- Paralel Wiring 2-4 ohms DUAL VOICE COIL SUBWOOFER Dual 4 ohm becomes 2 ohm as shown above Dual 2 ohm becomes 1 ohm as shown above Fig.
RECOMMENDED WIRE SIZES Power Cable Selection Chart Fuse Total 4Ft 4-7Ft 7-10Ft In Amperes 10-13Ft 13-16 Ft 16-19 Ft 19-22 Ft Length of Wire/Gauge 150A - 200A 2 GA 2 GA 2 GA *1/0* *1/0* *1/0* *1/0* 125A - 150A 4 GA 4 GA 4 GA 4 GA 2 GA 2 GA 2 GA 105A - 125A 8 GA 8 GA 8 GA 4 GA 4 GA 4 GA 2 GA 85A - 105A 8 GA 8 GA 8 GA 4 GA 4 GA 4 GA 4 GA 65A - 85A 10 GA 8 GA 8 GA 8 GA 4 GA 4 GA 4 GA PowerBass makes several types of amplifier wiring kits to assist with your inst
TROUBLESHOOTING TIPS Problem Solution Power LED not ON With a Volt Ohm Meter (VOM) check: • +12 Volt power terminal (should read +12 to +16VDC • Remote turn-on terminal (should read +12 to +16VDC) • Ground Terminal Power LED lights BLUE, no output • • • • Check RCA connections Test speaker outputs with known good speaker Substitute known good Source Unit Check for signal on the RCA cable with VOM in AC position Red Status Protection LED is ON, no output and 1. Amp is VERY HOT • 2.
SPECIFICATIONS FOR AUTOSOUND COMPACT D CLASS AMPLIFIERS PowerBass Autosound Class D Models ATM 600.1D ATM 900.1D Power Output @ 14.4 VDC Input • 4 Ohms RMS at THD 0.5% 250W x 1 325W x 1 • 2 Ohms RMS at THD 0.5% 400W x 1 550W x 1 • 1 Ohm RMS at THD 0.
POWERBASS AUTOSOUND LIMITED WARRANTY POLICY PowerBass USA, Inc. offers limited warranty on PowerBass products under normal use on the following terms: PowerBass Autosound Amplifiers are to be free of defects in material and workmanship for a period of one (1) year. This warranty applies only to PowerBass products sold to consumers by Authorized PowerBass Dealers in the United States of America.
PowerBass Autosound – A division of PowerBass USA, Inc. 13936 Mountain Avenue – Chino, CA 91710 Tel. (909) 993-5399 – Fax (909) 993-5393 www.powerbassusa.
