Instruction/ maintenance manual of the product MA4100 Directed Electronics
Go to page of 19
OWNERS MANUAL MA4100 Congratulations Endpanel Layout Features & Specifications Endpanel Layout Installation Troubleshooting Wiring Troubleshooting Power / Ground Troubleshooting Connections Troubl.
The extended use of a high powered audio system may result in hearing loss or damage. While TUBE DRIVER systems are capable of "Concer t Le vel" volumes with incredible accuracy , they are also designed for you to enjoy at more reasonable levels all of the sonic subtleties created by musicians.
1 Power Bandwidth: 5 Hz -50 KHz T otal Harmonic Distortion: 0.2% or less (A-weighted) Input T opology: Balanced Differential Input Sensitivity: 500mV - 12 volts RMS Input Impedance: 10K Ohms Output Im.
Recommended Fuse Rating f o r M A 4100 i s 1 0 0 Amps Y ou will need to install an in-line fuse or circuit breaker in the po wer wire within 18” of the battery . This fuse or circuit breaker protects y our vehicle from fire in case the po wer wire shorts to the vehicle body .
3 W arning! Y ou can mount the MA4100 in any position, even upside-down. However , yo u must maintain pr oper airflo w . Do not install your MA4100 under carpets or enclose it behind airtight panels. In trunk-mounted applications, be sure to provide venting for air circulation.
4 W arning! T o prevent a short to ground, disconnect the negative (-) terminal of the system’s battery before you begin. If the power cable shorts to ground, current will continue to flow until the short is opened, the main fuse blows, the battery explodes, or the wire melts.
5 Follow these simple instructions and ref er to the diagram belo w to make y our speaker connections: • Using at least 16 gauge wire, run wire from the speakers to the amplifier(s) using the same p.
6 Y ou 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.
7 Input Jac ks The MA4100 includes both RCA and Mini-Din (balanced) inputs. The supplied RCA connections allow you to use the MA4100 with other brands of audio gear . Our Differential RCA inputs pro vide a dramatic improv ement in noise reduction ov er standard RCA input types.
8 Input Gain Contr ols There are two Input Gain Controls located on the end panel under the RCA input jacks. These are not volume contr ols! These controls match the output signal voltage of the source unit to the amplifier inputs.
HANDCRAFTED IN THE USA By Precision Power POWER CONNECT POWER W ARM UP 9 P ower Side 1 3 2 1. PO WER A red light indicates that the amplifiier is turned on (After warm-up sequence). 2. W ARM UP A red light indicated that the tubes are warming up. (Refer to Pg.
10 Input/Control Side L- L+ REM R+ R- L- L+ R+ R- FRONT SPEAKER OUTPUTS REAR SPEAKER OUTPUTS FRONT GAIN REAR GAIN FRONT INPUTS L R REAR INPUTS L R BALANCED INPUTS FRONT REAR DIN/RCA DIN/RCA -12dB -12dB H A N D C R A F T E D I N T H E U S A B y P r e c i s i o n P o w e r 8 9 10 11 12 17 5 4 3 26 1.
Do you have 12V at the amplifier ’s connections? 11 No Sound Is the W ARM UP LED illuminated? YES NO YES The warm up cycle can take up to 40 sec., Is there sound after that? NO Y ou’re done Is there signal on the RCA ’s? YES NO Does the amp remote (REM) have 12V? Check all connections.
12 No Sound in One Channel YES Reverse the left and right inputs. Check the pre-amp (RCA/Mini-Din) cables for open connections and make corrections. Did you find open connections? NO Y ou’re done SOUND IS NO W IN... Opposite Channel Problem is in the speaker or speaker wire of the silent channel.
Noises While the Engine is On Alternator whine: This noise changes in frequency with engine RPM. Check for: . Excessive input le vel setting on the amplifier . High resistance in cabling or corr oded and/or loose connections . P olarity of the input cables If the problem persists, check the whines and pops chec klist below .
Check each side of the amplifier independently to see if the distortion is only on one channel. Is that the case? 14 Noises While the Engine is On or Off System hiss: Distortion: Distortion is garbled sounding music. This can often be caused by a shorted speaker wire.
15 eject VOLUME BASS TREBLE RIGHT LEFT BALANCE TRAC K REVERSE FOWARD 1 2 3 4 8 7 6 5 PPI MAR KET ING DPT Trk 1 Preamp/Equalizer Source Unit Sub Passive Crossover Passive Crossover Tweeter Tweeter MidR.
AMP RCA Rear Right Input DIF. RCA Rear Left Input INPUT ATTENUATION AMP RCA Front Right Input Left Left Right Right RCA Front Left Input MINI-DIN Front Input MINI-DIN Rear Input DIF.
Three-Y ear Limited U .S.A. W arranty This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
An important point after buying a device Directed Electronics MA4100 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Directed Electronics MA4100 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Directed Electronics MA4100 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Directed Electronics MA4100 you will learn all the available features of the product, as well as information on its operation. The information that you get Directed Electronics MA4100 will certainly help you make a decision on the purchase.
If you already are a holder of Directed Electronics MA4100, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Directed Electronics MA4100.
However, one of the most important roles played by the user manual is to help in solving problems with Directed Electronics MA4100. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Directed Electronics MA4100 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
