Question about Amplifiers & Preamps

1 Answer

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?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 16 Answers

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

New tubes aren't working


Are the filament lighting ? are the tubes original or are they substitute ? Check your power supply and output transformer if its a power amplifier.

Dec 08, 2013 | Amplifiers & Preamps

1 Answer

Don't understand how to connect my speakers


the 4 inputs are for biamping, (using separate amplifiers for low and high frequencies). just leave the pins in place and connect the amplifier to one red(+) and one black(-) connector on the speaker. It has an internal crossover to protect the tweeter.

Nov 20, 2013 | Amplifiers & Preamps

1 Answer

Samson S8 schematic


Try this link to download it.

May 26, 2012 | Amplifiers & Preamps

1 Answer

My Fender Deville has suddenly lost power (this is the 60 watt 2x12 model from around 1998) . It still has some volume, but much less than the last time I played it. It has had a history of some minor...


You will need to isolate the fault to a particular stage.
The two large valves are the power output valves and operate in push/pull mode. The next stage is the phase splitter and driver stage. The next stage is the tone control and compensation. The first stage is the pre amplifier stage. To eliminate the output and drive stage you will need to inject a signal at the top end of the master volume control. Touching this point wth a screw driver will inject enough hum to give a strong buzz from the speaker, if this is the case then fault is in pre amp of tone circuity if not. Check screen feed resistors for open circuit (wire wound resistors to screen pins of output valves). Check resistors to anode and cathode pins of phase splitter for increase in value. If the output stage seems ok then isolate the fault further by touching the screw drive to the grid of the valve in the tone network and then the pre amp valve. The buzz will get louder as you progress if the stage is working ok. If not check anode voltages and resistors.
WARNING. dangerous high voltages exist in the circuits. Only ever use one hand when making contact tests, keep the other one in your pocket. If you feel this help is beyond you then please seek professional help.
All the very best from Vintie

Jul 18, 2011 | Fender Amplifiers & Preamps

1 Answer

Frozen/welded power on/off switch


Sorry your amplifier has and internal short and can only be repaired by a repair shop if its cost worthy. Putting a bigger switch will only provide more current to the source resulting in the same thing or a fire from the feedback of current creating heat at the weakest point in the circuit

Aug 03, 2008 | Behringer EUROPOWER EP2500 Amplifier

1 Answer

Parts replacements


This is straight from the 1989 Japanese Transistor Substitution Manual.......

2SA 1011--------use 2SB 1085 A, made by Rohm

2SC2344---------use 2SD 1562A, made by Rohm

Good luck...Rob

Jan 31, 2008 | Amplifiers & Preamps

1 Answer

PEAVEY djs4 speaker QUESTION


If a speaker is "blown", there is normally an open-circuit in the voice coil, therefore it emits no sound at all. Can't discount a loose wire, but blown HF drivers are very common.

Dec 31, 2007 | Amplifiers & Preamps

1 Answer

Faulty amp


could be in the remote wire at least thats what to hope for. did you wire it off the cd player or off the hot wire. i had a boss doing the same thing but wouldn't stay on b/c i wired the remote off the hot. if that ain't it then and i hate to say this your power supply may not be adequate, you could try using heavier gauge wire. if that didn't do it then your alternative would be get a smaller amp or get a bigger battery with high output altinater

Dec 15, 2007 | Amplifiers & Preamps

1 Answer

Rotel RA 9808X Amplifier


I'd suspect that one of the two output transistors on that channel has gone bad. If you are unsure how to test or troubleshoot this, then you might try replace both the NPN and PNP outputs and catch the bad one that way. If your amp uses an output module then you would of course have to replace the module which would replace all the output transistors on both channels. Good luck. Another thing to look out for, is the emitter bias resistors. They are the large white ceramic ones near the outputs. Sometimes one of those will open up too. They will be of a very small resistance value like .5 ohms (point five ohms) or something in that general ballpark, and have a wattage value of typicaly 5 watts. So they are pretty big resistors. Be sure to check them all even if you do find a bad output transistor. They will often go out with the transistor. Good luck.

Jan 18, 2007 | Rotel RMB-1095 Power Amplifier

Not finding what you are looking for?
Amplifiers & Preamps Logo

Related Topics:

31 people viewed this question

Ask a Question

Usually answered in minutes!

Top Amplifiers & Preamps Experts

 Grubhead
Grubhead

Level 3 Expert

4590 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

The Knight
The Knight

Level 3 Expert

68323 Answers

Are you an Amplifier and Preamp Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...