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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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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.
Precor Error Code 12 12 Watchdog Lower PCA

May 04, 2013 | Precor EFX 546i Elliptical Version 4

1 Answer

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.
Or replace the engine.

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I am looking for a substitute board for AMD K2BC51-LF do you make such a board


try this...

http://www.legendmicro.com/store/6734_FIC-K2BC51-LF-Gateway-4006147R-motherboard-K2BC51LF.lmsp?OpenTreeBranches= try this

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The mpv 5 is in low gear how do you change it to high gear


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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1 Answer

Can you tell me what Err22 is? Thanks!


Description
Error 22 indicates that the drive motor (running belt) has been instructed to start, by either
manual or program control, and the monitoring system has not received any response from the
speed sensing system indicating that the drive motor has started.
Possible Causes
1. The treadmill utilizes an optical (infrared) speed sensor and the line of sight between the
speed sensor and the speed sensor target is obstructed.
2. Drive motor brushes are bad.
3. The speed sensor position relative to the speed sensor target is incorrect.
4. The speed sensor potentiometer adjustment is incorrect (when equipped).
5. The speed sensor is inoperative.
6. The lower PCA is bad.
7. The lower PCA to upper PCA interconnect cable is bad.
8. The upper PCA is bad
Possible Remedies
1. Carefully, vacuum out the drive motor compartment with a static safe vacuum cleaner. Pay
special attention to the area between the speed sensor and speed sensor target.
2. If the motor brushes do not make sufficient contact with the motor commutator, the drive
motor will not start when drive voltage is applied. Replace both drive motor brushes.
3. Adjust the speed sensor position so that the space between the speed sensor and the speed
sensor target is 3/16 inch and so that the speed sensor photo eye is aimed at the larger
portion of the targets wedge shaped section. On hall effect speed sensors (magnetic sensor)
the space between the end of the speed sensor and the flywheel tooth should be 3/16 inch.
4. Locate the speed sensor potentiometer on the lower PCA. Set the speed sensor
potentiometer at mid-range. Start the treadmill and increase the speed to 6 mile per hour.
Carefully adjust the speed sensor potentiometer to the point where the treadmill is operating
the smoothest. Increase the treadmills speed to full speed at repeat the previous adjustment.
These two adjustments are typically small and are usually only a matter of fine tuning.
5. If the speed sensor in inoperative the drive motor will start and run briefly before the error 21
occurs. If it is possible to access the speed sensor wiring, measure the D.C. voltage between
the speed sensor leads Two of the leads will constantly read approximately 5 Vdc. Two of the
leads will toggle between 0 Vdc. and 5 Vdc. as you slowly rotate the speed sensor target. If
you do not see both measurements above, the speed sensor is inoperative and must be
replaced. In some cases the speed sensor is mounted on the lower PCA and the the lower
PCA must be replaced.
6. Substitute a known good lower PCA to determine if the lower PCA is bad.
7. Substitute a known good interconnect cable for the existing cable.
8. Substitute a known good upper PCA to determine if the upper PCA is bad.

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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

May 29, 2009 | 2005 Mercedes-Benz Mercedes Benz E320 Cdi

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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