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MULTIPLE AMPLIFIER COMBINATIONS

14

© 2002 Directed Electronics, Inc 

The Directed 2400d subwoofer ampli-
fiers can also be used in multiples of the
Parallel Synced Gain combination
allowing for unlimited expansion to a
systems subwoofer section. To use
multiples of the Parallel Synced Gain
combination the following directions
must be adhered to for best results.

„

AAuuddiioo ssiiggnnaall - Divide the head unit
or processor audio signal to the
master amplifier by using RCA Y
adapters. Be sure to divide them an
even number of times to ensure the
input level at each master amplifier
is matched.

„

RReem

moottee  SSuubb  LLeevveell  CCoonnttrrooll  - The

Remote Sub Level Control cable can
be divided several times to connect
to each master amplifier. This can

be accomplished by using one or
more Directed Remote Sub Level
cable splitters.  Standard single-to-
double phone line splitters and
accessories from a local electronics
store can also be used.

For systems with more than two
master/slave combinations, use
multiple single-to-double splitters.
Do not use phone splitters that
divide the signal more than once
per splitter or splitters designed for
multiple uses.

„

AAm

mpplliiffiieerr  ccoonnffiigguurraattiioonn - When

using multiple Parallel Synced Gain
amplifier combinations follow the
instructions in the 

Parallel Synced

Gain

section of this guide for each

individual combination.

Summary of Contents for 2400d

Page 1: ...models 2400d ...

Page 2: ...2 2002 Directed Electronics Inc ...

Page 3: ...ars of high quality audio reproduction Directed Audio power amplifiers come with a two year limited warranty if installed by an authorized Directed dealer If not installed by an authorized dealer Directed Audio power amplifiers are covered by a one year parts and labor limited warranty Be sure to retain your original sales receipt and refer to the warranty section of this guide for full details ab...

Page 4: ... accident or unreasonable use neglect improper service or other causes not arising out of defects in materials or construction ALL WARRANTIES INCLUDING BUT NOT LIMITED TO EXPRESS WARRANTY IMPLIED WARRANTY WARRANTY OF MERCHANTABILITY FITNESS FOR PARTICULAR PURPOSE AND WARRANTY OF NON INFRINGEMENT OF INTELLECTUAL PROPERTY ARE EXPRESSLY EXCLUDED TO THE MAXIMUM EXTENT ALLOWED BY LAW AND DIRECTED NEITH...

Page 5: ...ry MOSFET outputs stable into two ohm loads Thermal DC offset reverse polarity and short circuit protection with status LED Master slave RCA jack function supports multiple amplifier systems with synced gain Top mounted controls easily accessed for system tuning Continuously variable 18 dB octave low pass crossover Switchable 30 Hz 24 dB octave subsonic filter Switchable 8 dB bass EQ function Swit...

Page 6: ...hin 8 to 10 inches of the battery terminal Use a fuse or circuit breaker rated slightly more than the fuse s of the amplifier The gauge of power wire used should take into account the total current draw of the system and the length of wire used IASCA and other auto sound competition organizations have charts available for this you can also find a chart in the MECP study guide Minimum wire gauge re...

Page 7: ...ldering the terminals after crimping is also recom mended 10 Due to the high frequency MOSFET switching power supply filtering the power cable is not generally required remember that the amp can t deliver full output if the power supply is restricted Proper grounding of the signal source is mandatory for the amplifier to reach its performance peak If the RCA inputs are not grounded adequately via ...

Page 8: ...ide 4 S Slla av ve e M Ma as st te er r S Sw wiit tc ch h Controls whether the amplifier is a slave or master when connected in the Parallel Synced Gain combination Refer to the Combined Amplifiers section of this guide 5 R Re em mo ot te e S Su ub b L Le ev ve ell C Co on nt tr ro oll Controls the subwoofer amplifier gain controls from a remote location for ease of adjustment during listening W W...

Page 9: ...eaker of the appropriate size within 12 inches of the battery terminal connection 4 R Re em mo ot te e T Tu ur rn n O On n This terminal turns on the amplifier when 12 volt is applied to it Connect it to the remote turn on lead of the head unit or signal source If a 12 volt remote turn on lead is not available a Remote Power Adapter P N 55000 can be used to supply a remote turn on signal DO NOT co...

Page 10: ...10 2002 Directed Electronics Inc SUB OUTPUT POWER PROTECTION REM GND BATT FIGURE 2 AMPLIFIER CONNECTIONS 2400d REAR 1 2 3 5 4 ...

Page 11: ...y S Sw wiit tc ch h Sets the cutoff point for subsonic frequencies at 30Hz Frequencies below 30Hz will be attenuated by 24db per octave 4 B Ba as ss s E EQ Q S Sw wiit tc ch h Adds 8 db of addi tional boost to the subwoofer output when active 5 S Su ub b P Ph ha as se e S Sw wiit tc ch h Changes the phase of the subwoofer output by 180 degrees 4 1 2 3 5 Control Panel Cover The gain and filter cont...

Page 12: ...c N NO OT TE E The dual and subout terminals of the 2400d are paralleled internally and the combined load impedance should be taken into consideration when connecting multiple subwoofers Single subwoofer connection top view Two subwoofer connection top view ...

Page 13: ...iers This combination allows the amplifiers to drive their own separate subwoofer s while being synced together via an in phase audio pre amp signal from the master amplifier Wiring connections to the amplifier subwoofer outputs in this combination should be standard in phase configurations creating a parallel speaker connection Refer to Parallel Synced Gain section of this guide for amplifier and...

Page 14: ...mo ot te e S Su ub b L Le ev ve ell C Co on nt tr ro oll The Remote Sub Level Control cable can be divided several times to connect to each master amplifier This can be accomplished by using one or more Directed Remote Sub Level cable splitters Standard single to double phone line splitters and accessories from a local electronics store can also be used For systems with more than two master slave ...

Page 15: ...t te e S Su ub b L Le ev ve ell C Co on nt tr ro oll Connect the Remote Sub Level Control to the master amplifier only The master amplifiers subwoofer gain is used to set the overall gain for all synced amplifiers then the Remote Sub Level Control can adjust the gain of all synced amplifiers 4 S Siig gn na all C Co on nn ne ec ct tiio on n Connect an RCA cable between the SYNC OUT RCA jack of the ...

Page 16: ...s of the 2400d are paralleled internally and the combined load impedance should be taken into consideration when connecting multiple subwoofers SUB LEVEL MIN MAX INPUT R L SLAVE MASTER REMOTE SYNC OUT INPUT I O R L SLAVE MASTER REMOTE SYNC OUT SLAVE IN SLAVE IN I O I O 2 2 Do Not Use 3 Do Not Use Master Slave 4 1 Do Not Use Do Not Use 5 ...

Page 17: ...r head unit to the 3 4 volume setting or until you start to hear distortion or clipping If you hear distortion before you reach the 3 4 volume setting of your head unit reduce the gain setting on the amplifier and start to raise the head unit volume again When you can listen to the music at or slightly above 3 4 on your head unit without audible distortion slowly raise the gain of the amplifier un...

Page 18: ...ance 20K ohms Input Sensitivity Variable from 150 mV to 8 volt Output Impedance 2 to 4 ohms Supply Voltage 10 to 16 VDC Fusing and Power 200A Minimum Cable Requirements AWG 12 Volt 0 Battery to fuse block Per amp trunk mounted 4 Fuse block to amplifier Minimum Cable Reguirements Ground 4 Amplifier to chassis 2600 watts 2400 watts 1 0 THD RMS continuous power driven into 4 ohms from 20 to 250 Hz 14...

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Page 20: ... field of advanced electronic technology Directed is ISO 9001 registered Directed is committed to delivering world class quality products and services that excite and delight our customers Directed Electronics Inc Vista California 92083 www directed com Directed is a proud member of Quality Directed products are sold and serviced throughout North America and around the world Call 800 274 0200 for ...

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