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I have a set of powered speakers that do not seem to be working. When the speakers power is switched off I can hear sound from the speakers although it is extremely quiet. To hear the sound at a decent level the source volume has to be up extremely high. However when I switch the speakers power on I get no sound from the speakers at all despite the power light indicating the speakers are getting power.
It is my understanding powered speakers amplify the source no matter what it is so I tried connecting the speakers to my laptop as well as my mp3 player but no sound could be heard from either except when the speakers power was off.
Is there any reason this could be happenning or is it a case of broken speakers?
SuzyB
<i>If I had a better memory I would remember more.</i>
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it might depends on the source.
for example, on my iPod, if I use the dock, it has an line-out that if volume "independant", so when I plug it into my amp, the volume will be controlled by the amp.
but if I plug it with the headphone port, I have to be certain that the iPod volume is set at least high to be the equivalent of the line-out.
so, check where you plugged you powered speakers either in a line-out or an headphone port.
Maximilien Lincourt
Your Head A Splode - Strong Bad
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I tried the speakers with my portable cd player (yes I even dug that relic out of the cupboard) and with another PC. When connected to the cd player sound could be heard when the speakers were switched on but even at maximum volume the sound was barely audible. With the PC, sound could be heard through both powered and non powered speakers but again even at max volume the sound was barely audible.
All I'm trying to do is establish if the speakers work so I can flog them. 
SuzyB
If I had a better memory I would remember more.
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Modern PC sound cards are designed to drive line inputs. They no longer have a power amplifier on them to drive speakers directly. You absolutely need a separate amplifier.
Your other equipment was designed to drive headphones. Headphones don't need so much power to produce decent output. The CD player sounds like it has a greater maximum output than your other devices.
It sounds like the amplifier chip itself has died. The little sound you hear when at maximum volume is probably just leakage from the input.
Stability. What an interesting concept. -- Chris Maunder
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OK thanks. That helps me understand things a little better.
SuzyB
If I had a better memory I would remember more.
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Hello,
I am working on a project where I would like to write a web application (html, css, javascript, and php) to interact with a server. I need to be able to run it from a PDA browser.
I am currently looking into the Palm OS LifeDrive.
The PDA I end up choosing should be able to lock a program (like the browser), so that users can only use that program, unless they can provide a password to unlock all other functionality.
Also, it would be great if one could disable the address bar on the browser (so that one can only visit sites that are directly linked from the default website).
If anyone has used this PDA in the past and can provide any information that address the above concerns, it would be greatly appreciated. Or if anyone can provide suggestions for other PDAs that could meet all the requirements, that too would be appreciated.
Thanks in advanced,
-----------------
Genaro
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Hi all,
I'm doing work for a client of mine who would like to have a siren or light notify the user when a print job is detected in his warehouse.
Unfortuantely, the printer has an embedded print server, which is connected to a hub/router/switch using RJ45 cabling.
I'm a software developer with some good electricial experience. What do you think is possible? Wiring up a light/siren is no problem, its detecting the print job on the printer. Since the RJ45 line is a serial pipe, there will occasionally be traffic on the pipe that is NOT a print job, so tapping one of the lines into a relay just wont work.
Just curious to see if anybody thinks this is possible.
Mike
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Mike Doner wrote: Just curious to see if anybody thinks this is possible.
I'm only answering because no one else has had any ideas for you.
If this is a Microsoft AD domain, set up a print queue (talk to the local network admin), once all of the computers are printing through the queue, it’s fairly (as memory serves) to audit the queue. Any time a user prints write app that monitors the queue and provided it’s the correct printer sound the alarm. Simple enough, huh
Alternatively, and I have no idea how on earth you would do this but, couldn’t you just set up a small infa red deal where the paper is spit out of the printer? Any time the beam is broken sound the alarm. Similar to the way small business have enunciators at the doors to let clerks know someone has come in.
I'd love to help, but unfortunatley I have prior commitments monitoring the length of my grass. :Andrew Bleakley:
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Hello. In the Registry in the key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum is a list of hardware in Win2000/XP as showed in the device manager. The problem is, that there is every hardware which was installed on the computer, even if the hardware isn't currently installed on the computer. Now my question: How can I find out which devices are active(currently installed) und which are not?
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Look at the hardware ID for all devices in device manager (proporties etc).
Match them up with the IDs in the ENUM section, and delete the ones that dont.
It doesnt matter if you delete a device that is present. The inf file is still in windows\inf and the PnP manager will re add that ID to the ENUM section based on the inf file when it finds the new hardware.
Nunc est bibendum
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Hey guys,
I have a Samsung Dual Layer DVD Writer and the other day I put in a movie DVD in and it asked me to select either Region 2 or 4 (in PowerDVD) and it diabled the other region choices.
It has never done this before...so I selected my region (Region 2 South Africa) and it says "This disk is inhibited from playing because of area limit." This is strange because I am in region 2 so I went to regional settings and it shows the DVD drive is on Region 1!!! So I tried changing it to Region 2 (South Africa) and it keeps giving an error message "Cannot change region settings, put correct region DVD in drive or use Admin rights.
What should I do to undo this? I can downloaded the firmware from the samsung but I don't know the model number!
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Hey howzit?
Even if I get the model number...that still doesn't solve my problem. Will running firmware software clear the region codes associated with the drive or not?
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Hello,
I have some weird problem connecting two hdd's and one cd-rom drive at the same time. I can connect either the two hdd's or a single hdd with the cd-rom but can't get it to work all together. The interesting thing is that according to the BIOS settings both IDE slots (primary/secondary) are turned on, but only one of them works. I didn't wrote down the exact motherboard model. Is this a BIOS or motherboard issue. For those who will suppose that there is a problem with the motherboard, I've tried the same thing on identical configuration and the effect is just the same.
Any clues on how to work around the problem?
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Hi.. there is no problem in your mother board.. and no problem in ur bios...
Just set the jumpers of your both HDD and CDD. The jumpers on the HDD and CDD are near to the power and data connectors. hope u under stand where jumpers are there....
And about how to set the jumpers just see the HDD and CDD labels that are fixed on the HDD and CDD... there they have mentioned about the settings..
hope you got the answer... this will work... please try carefully..
Bawa
Bawa
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Hey, I've difficulties beside setting up the jumpers, yes they are set up as supposed to:, master/slave etc. This doesen't solve the problem.
Thanks for the support anyway
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Dear all
I am new to embededd development. I am confused in choosing the programming language for my processor which will support C as well as Java. My embedded application is basically a communication based application(Serial as well as LAN. In future the feature of the device/application will be extended to work in internet also. So guide me in choosing the programming language(which one is best in LAN/Internet based application).
And also give me an example of Web based embedded application.
Thanks in advance.
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i know some of modules can convert the LAN to Serial Port. It also comes with a Java and C lib, for web application, i chose the java.
for your case, maybe you can try the processor work with such kind of modules. it can save you alot of time by using the java lib.
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Hi,
I've one USB-to-Parallel cable. May I know if there's a way to write a VC++ program such that it's able to access individual bit of the parallel side?
The program is to be run in WinXP, Win2K, and possibly Win98.
Thanks.
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This will be a normal LPT port. So you don't need write drivers for usb. To work with LPT from your program you need a DLL that has API for it.
Se this http://www.begemotik.ee/e107_plugins/content/content.php?type.1.content.2
below is a link to download DLL.
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HOW TO READ REAL SERIAL NUMBER NOT VIRTUAL SERIAL NUMBER OF A CD?
example:-
when we copy files from a CD to hard disk and reject CD ,windows pop up this message "Please Insert CD With Serial Number ************"
how can i get this serial number using assembly ,C++ or C# languages.
thanks.
Immanuel Alfy Sefine
http://www.salam4all.be
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how i can get serials number of my motherboard bios vedio card
am
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