Directed Electronics MA4100 - Manuals

Page 2 - Do not attempt to service TUBE DRIVER; S er vice; F O R Y O U R R E C O R D S; BACK TO CONTENTS

T h e e x t e n d e d u s e o f a h i g h p o w e r e d a u d i o s y s t e m m a y r e s u l t i n h e a r i n gl o s s o r d a m a g e . W h i l e T U B E D R I V E R s y s t e m s a r e c a p a b l e o f " C o n c e r t L eve l " v o l u m e s w i t h i n c r e d i b l e a c c u r a c y, ...

Page 3 - TD dealer; Completely Designed and Handcrafted in the USA; D i m e n s i o n s

1 Power Bandwidth: 5 Hz -50 KHz Total Harmonic Distortion: 0.2% or less (A-weighted) Input Topology: Balanced Differential Input Sensitivity: 500mV - 12 volts RMS Input Impedance: 10K Ohms Output Impedance: 2 - 16 Ohms, bridged 4 - 32 Ohms MA4100100 WRMS x 4 @ 4 Ohms per channel200 WRMS x 4 @ 2 Ohms...

Page 4 - F u s e R e q u i r e m e n t s

R e c o m m e n d e d F u s e R a t i n g for MA4 1 0 0 is 10 0 A m p s You will need to install an in-line fuse or circuit breaker in the power wirewithin 18” of the battery. This fuse or circuit breaker protects your vehiclefrom fire in case the power wire shorts to the vehicle body. If you are on...

Page 5 - You can mount the; must maintain proper airflow. Do not install your; P o w e r W i r e C a l c u l a t o r; You need to mount your; MA4100 securely in your vehicle to prevent damage. You; Recommended MINIMUM Gauge; Total Current Draw; Amplifiers Generate Heat!

3 W a r n i n g ! You can mount the MA4100 in any position, even upside-down. However, you must maintain proper airflow. Do not install your MA4100 under carpets or enclose it behind airtight panels. In trunk-mounted applications, be sure to provide ventingfor air circulation. Let the amplifier brea...

Page 6 - G r o u n d i n g; Your; R e m o t e T u r n - o n; IMPORTANT! Your new; Run a wire from the chosen turn-on lead to the REM connection

4 W a r n i n g ! To prevent a short to ground, disconnect the negative (-) terminal of the system’sbattery before you begin. If the power cable shorts to ground, current will continueto flow until the short is opened, the main fuse blows, the battery explodes, or thewire melts.R e c o n n e c t t h...

Page 7 - Using at least 16 gauge wire, run wire from the speakers to the; POWERLOCK connectors and plug; them in; S p e a k e r C o n n e c t i o n s

5 F o l l ow t h e s e s i m p l e i n s t r u c t i o n s a n d r e fe r t o t h e d i ag r a m b e l ow t om a k e yo u r s p e a k e r c o n n e c t i o n s : • Using at least 16 gauge wire, run wire from the speakers to the amplifier(s) using the same precautions that you followed for running th...

Page 9 - I n p u t J a c k s; The; MA4100 with other brands of audio gear. Our; B a l a n c e d I n p u t s

7 I n p u t J a c k s 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 provide a dramatic improvement in noise reduction overstandard RCA input types. Our fully balanced ...

Page 10 - I n p u t G a i n C o n t r o l s; MA4100 accepts signal levels of up to 12 volts RMS.; S e t t i n g I n p u t G a i n; Set the Input Gain Controls to just above the lowest setting.

8 I n p u t G a i n C o n t r o l s There are two Input Gain Controls located on the end panel under the RCA inputjacks. These are not volume controls! These controls match the output signalvoltage of the source unit to the amplifier inputs. By turning the controls clockwise (to the right), the inpu...

Page 11 - P o w e r S i d e

HANDCRAFTED IN THE USA By Precision Power P O W E R C O N N E C T P O W E R W A R M U P 9 P o w e r S i d e 1 3 2 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)...

Page 12 - I n p u t / C o n t r o l S i d e

10 I n p u t / C o n t r o l S i d e L - L + R E M R + R - L - L + R + R - F R O N T S P E A K E R O U T P U T S R E A R S P E A K E R O U T P U T S F R O N T G A I N R E A R G A I N F R O N T I N P U T S L R R E A R I N P U T S L R B A L A N C E D I N P U T S F R O N T R E A R D I N / R C A D I N /...

Page 15 - N o i s e s W h i l e t h e E n g i n e i s O n; This noise changes in frequency with engine RPM. Check for:

N o i s e s W h i l e t h e E n g i n e i s O n A l t e r n a t o r w h i n e : This noise changes in frequency with engine RPM. Check for: . Excessive input level setting on the amplifier . High resistance in cabling or corroded and/or loose connections . Polarity of the input cables If the problem...

Page 16 - N o i s e s W h i l e t h e E n g i n e i s O n o r O f f

Check each side of the amplifieri n d e p e n d e n t l y t o s e e i f t h edistortion is only on one channel.Is that the case? 14 N o i s e s W h i l e t h e E n g i n e i s O n o r O f f S y s t e m h i s s : D i s t o r t i o n : Distortion is garbled sounding music. This can often be caused by ...