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OWNER`S MANUAL
DD31T
600W /3 Channel Class D Full Digital Amplifer
This product must be returned to the
separate collection system for electronic
products. Do not dispose this product
together with general household waste.
DD-SERIES
DLS amplifiers are designed and engineered by:
DLS Svenska AB
P.O. Box 13029 - SE-40251 Göteborg - Sweden
Tel: +46 31 840060 - Fax: +46 31 844021
E-mail: info@dls.se
www.dls.se
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Summary of Contents for DLS DD31T
- Page 1 OWNER`S MANUAL DD-SERIES DD31T 600W /3 Channel Class D Full Digital Amplifer DLS amplifiers are designed and engineered by: This product must be returned to the DLS Svenska AB separate collection system for electronic P.O. Box 13029 - SE-40251 Göteborg - Sweden products.
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Page 2: Warranty Service
Thank you and congratulations Thank you for your decision to purchase a DLS amplifier! Your DLS amplifiers must be installed correctly to perform at its best. This manual will show you how to install the amplifier like a pro. Please read the entire manual before beginning the installation. -
Page 3: Mounting The Amplifier
In the event of overheating, the amplifier will turn off and only restart when cooled. For this reason the amplifier should be mounted in a location which will allow air to circulate freely. The compact size of the DLS DD Series amplifier allows greater flexibility in mounting. - Page 4 DD31T CONTROL PANEL LAYOUT Fig. 2 - 3 Channel Panel Layout 1. SUBWOOFER INPUT Connector This is both a Low and High Level Input port. Using the supplied wiring harness for low level RCA inputs or as instructed on Fig.9 High Level (speaker level) input.
- Page 5 17. GND (Ground Input Connection) A good quality ground is required for your DD31T amplifier to operate at peak performance. A short length of cable the same gauge as your power cable should be used to attach the ground terminal directly to the chassis of the vehicle. Make sure that all of the paint is sanded or scraped away to ensure a quality ground connection.
- Page 6 Your DLS DD amplifier requires unrestricted current to deliver peak performance, so do not “starve” your amplifier by using small power cable. Using under sized power cable can result in unnecessary over-heating of the amplifier, distortion at high volume levels and might even cause the thermal protection circuitry to shut off the amplifier.
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Page 7: Power Wiring
POWER WIRING 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;... - Page 8 REM (Remote Trigger) This terminal must be connected to a switched +12v-+24v source. Typically, remote turn-on leads are provided at the source unit that will turn on and off the amplifier in correspondence with the source. If the source unit does not have a remote turn-on lead, then a switched +12-24V supply must be used, like the ACC, +12-24V.
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Page 9: Fuse Requirements
FUSE REQUIREMENTS Due to the small size of the DLS DD series amplifiers, no fuses are incorporated into the panels that normally protect the unit from excessive current. Use an in-line fuse holder and fuse for this purpose. Remember this fuse also protect the vehicle/vessel from a dangerous short circuit. - Page 10 SOURCE INTERCONNECT Single RCA / Low Level Input Fig.7a Input using Single RCA or 3.5mm AUX Cable 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 for better noise rejection.
- Page 11 SOURCE INTERCONNECT Dual RCA / Low Level Input (Front and Subwoofer) Fig.8 Input using two pairs of RCA cables...
- Page 12 SOURCE INTERCONNECT Single High Level / Speaker Input White (Solid) = Left + White / Black (Striped) = Left - Grey (Solid) = Right + Grey / Black (Striped) = Right - Fig.9 High Level / Speaker Level Input 1) To use speaker level inputs please connect the HLC harness to connector, 2) Connect the wires from the speaker output of the radio to the white and grey wires of the amplifier input wires using the color codes in above drawing.
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Page 13: Set-Up Adjustments
SET UP ADJUSTMENTS INPUT Gain Adjustment GAIN Control Panel (3) and (11) GAIN Control M AX 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 three simple steps: Set the volume of GAIN on the amplifier to Min (completely counter clock wise). -
Page 14: Input Switch
1) Using the 2CH Mode on the DD31T requires input signal to the Front Input Connector. 2) Using the 3CH Mode on the DD31T requires both the Front Input and Subwoofer Input to be used. This will allow for fading... -
Page 15: Speaker Wiring
Speaker Load Keep in mind your DLS DD31T amplifier is a high power amplifier and not a high current amplifier. In other words this amplifier requires a minimum impedance of 2 ohms STEREO and 4 ohms bridged (2-ohms MONO on SUB channel) to operate trouble free Lower. - Page 16 PLEASE OBSERVE POLARITY AS SHOWN ON WIRE MARKERS. Speaker Output Connections 3 Channel Model (DD31T) 3-Channel Speaker Output Connection Fig.12 3-CH Speaker Connection (Do not connect total impedance under 2 ohms)
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Page 17: Troubleshooting Tips
NOTE: After using all the troubleshooting tips above, 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 amplifier. Contact DLS Sweden or your local dealer... -
Page 18: Specifications
Specifications DD31T Number of channels Amplifier class 125Wx2+350W Power output RMS, 2 ohm (1%THD) Peak music power, 2 ohm 600 W Power output RMS, 4 ohm (1%THD) 80Wx2+200 W Signal to noise ratio, A-weighted >90 dB >80 Damping factor 10 Hz - 20 kHz...