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User manual Directed Electronics, model TD2200PRO 225A

Manafacture: Directed Electronics
File size: 1.99 mb
File name: Precision_Power_TD2200PRO_Owners_Manual.pdf

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You can achieve this mono channel by using the left positive (+) speaker connection and the right negative (-) speaker connection. (Refer to the end panel drawing on the next page.) Note: Total bridged impedance of less than 4-ohms may trigger the protection circuitry causing reduced output and may eventually damage your amplifier. B r i d g i n g You can operate each pair of channels in both stereo and mono (3 channel or tri-mode) at the same time by using highpass filters (bass blockers) on the higher frequency stereo channels, and a lowpass filter (coil) on the subwoofers. The frequencies of the chosen highpass and lowpass filters must not overlap (allow the mids and highs to play the same music as the subs) or the impedance the amplifier sees at those frequencies will be cut in half possibly causing it to turn down. Sub Tweeter Tweeter MidRange MidRange Low pass filter Highpass Filter Bandpass Filter Highpass Filter Bandpass Filter L- L+ R+RFRONT BACK TO CONTENTS Input Jacks Your TUBE DRIVER includes both RCA and Mini-DIN (balanced) inputs. The supplied RCA connections allow you to use TUBE DRIVERwith other brands of audio gear. Our Differential RCA inputs provide a dramatic improvement in noise reduction over standard RCA input types. Our fully balanced Mini-DIN connection system features high signal voltage capability and the highest possible sound quality. A single cable for 2 channels also simplifies installation. Cables from the source unit, non-powered equalizer, or crossover go here. Balanced Inputs Standard Coaxial RCA Cables Standard coaxial RCA cables utilize two connections: a center wire (signal positive) attached to the center pin of the RCA connector along with a braided outer conductor (signal negative) connected to the outer ring of the RCA connector. This design almost always allows radiated noise to enter the system, since the signal is not well protected. (+)Positive (-)Negative Balanced Mini-DIN Cable Balanced Mini-Din connections use six pins and one grounding ring. Pins 1 and 2 are open connections, normally they would carry your remote turn on voltage. Pins 3/4 and 5/6 are a pair of twisted conductors for the music signal. The twisting of the inner wires rejects or eliminates radiated noise by more than 30 dB. The inner pair of wires are then protected by an outer shield connected to Pin 1. This means the music signals can be kept as far away as possible from the power and chassis ground paths of other circuitry, allowing the transmission of pure music between points while protecting it from noise generating equipment and wiring present in the vehicle. The diagram below shows the pin configuration for the Mini-Din connections. 4 5 6 3 7 BACK TO CONTENTS Input Gain Control Input Gain Control There is an Input Gain Control located on the end panel under the RCA input jacks. This is not a volume control! This control matches the output signal voltage of the source unit to the amplifier inputs. By turning the control clockwise (to the right), the inputs of the amplifier become more sensitive and will allow a weak signal of approximately 1/2 volt to drive the amplifier to full power. At the same time, while an amplifier with its level control at maximum is able to drive a weak signal, it also picks up and amplifies any noises lurking in the background, such as a brake light pop,alternator whine,or ignition tick. Increasing the signal voltage to the amplifier by using a high output source unit (or a TUBE DRIVER LD-3) makes the music much louder. By turning the level control counterclockwise (to the left), the amp inputs will be less sensitive. The amp will reproduce music at full power while making any noise floor insignificant. Your TUBEDRIVER accepts signal levels of up to 12 volts RMS. Setting Input Gain 1. Set the Input Gain Control to just above the lowest setting. 2. Turn the master volume on the source unit or pre-amp to almost full volume. 3. With music playing, slowly increase each Input Gain Control until you hear distortion. Turn down the Gain Control until the distortion stops. 8 BACK TO CONTENTS P o wer Side P o wer Side 1. POWER A red light indicates that the amplifiier is turned on (After warm-up sequence). 2. WARM UP A red light indicated that the tubes are warming up. (Refer to Pg. 4; Remote Turn-on) 3. POWER / GROUND After you have securely connected your power and ground wires, plug in the connector here. HANDCRAFTED IN THE USA By Precision Power P O W E R C O N N E C T P O W E R WA R M U P 1 32 9 BACK TO CONTENTS 1. SPEAKER OUTPUTS/REMOTE(Turn on) After connecting remote and speaker wires plug in the connector here. 2. GAIN CONTROL Use this control to match the output level of the head unit to the outputs of the amplifier 3. BALANCED INPUT Plug in the mini-din output from the LDX-33 crossover, LD-3 line driver, or other balanced source here. 4. -12dB For use with high level inputs (4V up to 12V). Push this switch in to attenuate the input by 12dB. 5. BALANCED / RCA T...