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Increase the power of my DJs4

I'd like to substitute the lower LF driver with a bigger one,wich it could be the problem if any?

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Generally No Problem
BUT-------------------------------

Frequency Response will not be Flat any more.
(The Frequency Response between Different Size drivers is different)

Will Require More Power to Drive (Heavy Driver/Bigger Driver ususally requires more Power to move cone and efficiency is usually less)

Crossover Parts May not handle the Power in order to push bigger driver.

May encounter over driving to other Driver (Mid/Tweet) when you push with higher power in order to move the heavy cone.

Posted on Feb 06, 2009

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Posted on Jan 02, 2017

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I can't find the fuse for the power windows on a 1998 Lincoln Navigator


All the other windows work ? Not a fuse , one fuse powers all the windows . Test for B+ voltage at the switch an the window regulator would be the proper diagnostic procedure . Do you own a volt meter ? know how to read a wiring diagram ? how to do basic automotive electrical testing . The Faint click you hear is probably a relay , which means the GEM - genaric electronic modual is energizing the window relay . The windows are computer controlled .

The GEM will activate the OTD Relay until one of the following conditions is met:
  • The LF regulator control switch is pushed to the UP position.
  • The LF regulator control switch is released (OFF position) and then moved to the down position (first detent) or one touch down (OTD) position (second detent).
  • Seven seconds have elapsed since the OTD was initiated.
  • A window regulator electric drive stall condition is detected on the one touch down sense line inputs.
The UP window operation is not controlled by the GEM. The feature is activated when the delayed accessory is active and the LF window regulator control switch is pressed to the UP position. The switch provides delayed accessory power to one side of the motor and ground to the other side through the one touch down relay. The one touch down relay is not active when the LF regulator control switch is in the UP position.
Passenger windows may be raised or lowered using the LF master control switches or the appropriate passenger window switch. Passenger window switches receive power when the delayed accessory relay is active and the LF remote lock-out switch is in the UNLOCK position. When in the LOCK-OUT position, the passenger windows are deactivated.
The GEM controls manual down and auto down window movement with the down window relay. The relay is activated by applying ground directly to one side of the down window relay coil, and deactivated by removing the ground signal.
The delayed accessory relay provides power for the operation of the power windows and the power moon roof. The delayed accessory feature is active when the ignition switch is in the RUN or the ACC position, or when the ignition switch is changed from RUN or ACC to the OFF/LOCK position and the LF and RF doors are closed.
The GEM will deactivate the delayed accessory feature when:
  • the LF door is ajar and the ignition switch is in the OFF/LOCK or KEY-OUT position.
  • the RF door is ajar and the ignition switch is in the OFF/LOCK or KEY-OUT position.
  • 10 minutes have elapsed since the ignition switch was changed from ACC or RUN to the OFF/LOCK position.
Feature inputs:
  • LF door open warning switch (open circuit with door closed, grounded with door ajar).
  • RF door open warning switch (open circuit with door closed, grounded with door ajar).
  • Ignition switch RUN position (battery potential on both the RUN and RUN/ACC inputs).
  • Ignition switch ACC position (battery potential on the RUN/ACC input).
  • Ignition switch OFF/LOCK position (absence of battery potential on the RUN, RUN/ACC, and START inputs).
The Trainer 24 Power Window Troubleshooting

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1 Answer

Precor error 12


Precor Error 12, Watchdog (Lower PCA) Probable Cause 1. A failure in the lower PCA overloads the low voltage power supply and causes it to drop below the preset level.
2. A fault in the interconnect cable (upper PCA to lower PCA) causing the low voltage power supply of the lower PCA to be too low.
3. A failure in the upper PCA that overloads the lower PCA low voltage power supply causing it to be too low.
Corrective Action
  1. If the error message is continually displayed when the unit is powered up, the upper PCA needs replaced.
    External causes may make the error appear intermittently.
    1. If the AC input of the unit dips significantly during power up test sequences, the test could fail causing the error to appear.
    2. A treadmill connected to a non-dedicated AC circuit can experience this error intermittently.
  2. Determine if the interconnect cable is the cause by substituting a know good cable in place of the current cable. For test purposes, the substitute cable needs to be connected directly between the upper and lower PCA's, without routing the cable internally.
  3. Determine if the upper PCA is the cause by substituting a know good upper PCA for the existing upper PCA.
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Honda cbr indicators all flashing


Hi, led bulbs have much lower power consumption than common bulbs. Usualy when you change for this type of bulbs you also need an apropriate flasher wich you did, but question the suplier about it. another solution is to instar a resistance just before the bulb in order to increase ohms ans all be normal again.
good luck
Francisco

Oct 20, 2011 | Motorcycles

1 Answer

Error 12 appears on display? What do I do?


Precor Error 12, Watchdog (Lower PCA) Probable Cause 1. A failure in the lower PCA overloads the low voltage power supply and causes it to drop below the preset level.
2. A fault in the interconnect cable (upper PCA to lower PCA) causing the low voltage power supply of the lower PCA to be too low.
3. A failure in the upper PCA that overloads the lower PCA low voltage power supply causing it to be too low.
Corrective Action
  1. If the error message is continually displayed when the unit is powered up, the upper PCA needs replaced.
    External causes may make the error appear intermittently.
    1. If the AC input of the unit dips significantly during power up test sequences, the test could fail causing the error to appear.
    2. A treadmill connected to a non-dedicated AC circuit can experience this error intermittently.
  2. Determine if the interconnect cable is the cause by substituting a know good cable in place of the current cable. For test purposes, the substitute cable needs to be connected directly between the upper and lower PCA's, without routing the cable internally.
  3. Determine if the upper PCA is the cause by substituting a know good upper PCA for the existing upper PCA.

Precor Error Code 12 12 Watchdog Lower PCA

Jul 12, 2011 | Precor EFX 546i Elliptical Version 4

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My 1197 tacoma 4 cylinder automatic w transmission has little power. I have tuned it up with some increase in power but not much, I average 23 mpg. what can I do to increase power?


You could put in a turbo or increase air flow.
You could buy an aftermarket ecu which is tuned for performance.
You could also get a machinist to make the cylinder bores bigger and put in bigger pistons etc but this may be expensive.
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The second row of lights in the speed indicator. The two bottom buttons will increase and decrease the speed. The lower left button will decrease, the lower right will increase. You will see the second row of lights get bigger or smaller as you press those buttons to increase/decrease your speed. When the second row of lights is fully lit, you will be at the top speed.

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LT signal fault


It is very difficult to diagnose your problem without being in front of your vehicle. But I will let you in on a tip-This vehicle substitutes bulbs for inoperable bulbs i.e. if your brake light goes out the bulb monitoring system will substitute your tail lights in place of the inoperable brake light. It can be frustrating you are not very familiar with your vehicle because when the brake switch is depressed you will see lights on and still get the message on the heads up display. also it is very important that the bulb wattage is exact. any difference in resistance will trigger a inop bulb problem. Also I believe that the turn signal is a dual filament bulb-one for turn signal and the other for your running lights. hopefully I have been helpful

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1 Answer

2003 F250 Power Windows won't work


check fuses 35 & 41 (10 amp, red).
it also shows an accesory delay relay in the fuse panel.
And fuse 601? 30 amp.

make sure you don't have lock-out on driver switch panel activated.

Power Window System
Features and Operation
NOTE: The accessory delay feature will allow power window operation up to 10 minutes after the ignition is off or until a door is opened.
If equipped with power windows, the window control switch (14529):
  • will operate the power windows only when the ignition switch is in the RUN or ACC position.
  • is located on each front door trim panel, and Crew Cab and Excursion rear door trim panel.
  • may be used to raise or lower the driver side, passenger side and rear windows from the LF control on the driver side, or the passenger window from the passenger switch.
  • includes a one-touch down (OTD) feature for the driver door window.
  • can partially lower the driver side window when the LF window control switch is depressed half way (first detent).
  • will completely lower the driver side window when the LF window control switch is fully depressed and then released (second detent).
Power Window System — Modes of Operation
There are two modes of operation for the power window system.
Manual Mode
When the LH window control switch is pressed to the first down position, the window will move down until one of the following conditions are met:
  • The LH window control switch is no longer in the first down position.
  • The LH window control switch is pushed to the OTD position, causing the windows to enter auto mode.
Auto Mode
Auto mode provides the OTD feature. The OTD feature is activated when the LH window control switch, for the LH window, is pressed to the second down position.
Auto mode will be terminated when any of the following conditions are met:
  • The LH window control switch is pushed to the UP position.
  • The LH window control switch is released (OFF position) and then moved to the DOWN position (first detent) or OTD position (second detent).
  • Note: Delayed accessory feature must be active.
The OTD feature is controlled by the window control switch.

---------------------------------------------------------
Condition Possible Sources Action
  • All power windows are inoperative
  • Fuse(s).
  • Circuitry.
  • LF window control switch.
  • Accessory delay relay.

May 23, 2009 | 2003 Ford F250 Super Duty Crew Cab

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