Main
 
 




 
 
Do it yourself Upgrades by Pete "Skotos" De Garis. May 13. 2001

It seems like I just got this new case and it had everything I could want, but really it doesn't...

My purpose for the next little while is to bring a series of articles on do it yourself upgrades and custom work you can do to make your computer not only work better, but look better to.

Recently I reviewed a great case from Coolerguys.com. (Check review here). This thing has pretty much everything you could want in a power users case. Port replicator, built in stereo speaker system, and a whole whack of fans to keep things cool. It really is the ultimate LAN party goers box.

I got to thinking. Is the perfect case enough ? Nope. Of course not. Here at Fragtopia we believe that anything perfect can of course be made better by us. Anyhow for the next little while IM going to write some articles on my quest to turn this awesome case into an UBER case. The DEMI case, the CASE all gamers should have and beg me to make for them :P First step will be an internal amplifier for our built in speakers.

First step, Find a need for upgrading.

One of the few faults I had with the case was the lack of volume from the speakers inside. Coolerguys have mounted some 3 watt, stereo speakers in the front of the case and these are NOT cheep PC speakers either. Their only downfall was they were relying on the limited power of the built in amp in my soundcard, and were trying to send sound to my ear through the confines of the case.

I decided I had to give them some juice if I was going to rely on them for sound during a LAN party. Now, there are after market items you can purchase to accomplish what IM doing here. Many manufacturers have amplifiers for sale that stick into a 5 1/4" slot in your system, but I say, why would I ever buy what I can make for myself ? Besides these after market items were never intended to power PC speakers living inside a computer as all their outputs are external.

This case design lends itself perfectly to this mod, simply because its pre-wired, all you have to do is connect the dots. Ill include some how too as far as setting up a case that isn't pre wired for this as well in case your wondering.

   
This is it, well the part everyone sees anyhow. How do I make an amplifier system that can power a couple of speakers INSIDE my case ? Keep on reading.

Features of our little amp include Volume, tone control and a headphone jack (Having a headphone jack on the front of the case is extremely convenient for LANing)
 
   

 

What you need:

To make your internal sound system you will need:

  • 2x speakers
    a method to mount speakers
    an amplifier
    a method to mount amplifier
    some wiring
    A method of powering everything up
    If your doing a quick disconnect install, you may need some extra headphone jacks and such.
  • 5 min epoxy
  • soldering equipment

Where I found all this stuff:

Most of the parts you will need you most likely already have. You know those crapy old desktop speaker systems you've been meaning to get rid of ? Those have 1 amp, 2 speakers, and AC/DC power plug and all or most of the wiring needed.

 

   


My amp is nothing more then a cheep 8 watt Logitec amp, from a half decent set of desktop speakers.

In the large view you can see the 5 1/4" face plate all drilled and ready to go

 
   

My speakers, well they came in the case, but I could just as easily use the ones from my speaker system. The added speakers would of course be bigger so some thought would go into how to install them. Keep in mind, if your going to transport your case, everything must be in secure and tight.

What is NOT secure WILL inevitably smash up the inside of your PC when it breaks loose.
 
   
   
My amp "rack" or mounting method is an old 5 1/4" Removable IDE hard drive tray and one of those clip in front face plates that cover your 5 1/4" slots in your case.
I had to slice off the tail end of the bay, and cut notches in the front so that the 5 1/4" face would fit snug and look good.

Both parts are held together with 5 min Epoxy, and the cork is there to give it something soft and "melt proof" to sit on. The amp is secured with screws
 

One nice thing about this install is that the plastic cross sections of the removable drive bay give a nice surface for the amp to sit on and screw into. Also being designed to fit in a 5 1/4" bay, it installs as easy as any other device, using a couple of screws.

 

Putting it all together:

There are 2 ways you can go about putting something like this together. You can bodge it (that is just hack it all up and put it together in your case), or you can take your time and make a pretty nice looking, functional product when your finished.

For me I do things the right way, IM the kind of person that really doesn't want a fire hazard in his computer.

One optional step I recommend is to do yourself a big favor and draw out what your plan is before you start wiring things up. This will save you no end of grief when the time comes to hook everything up. It also ensures that through every step you know exactly what you need, and where everything is going.

   
I decided to go the "quick disconnect route". That is to say that all my wiring is done using those stereo headphone plugs so that I can remove the amp as I would any other device from my case. This is how I recommend building this. Not only is it neater, but the lack of hacked and spliced wires makes for a safer installation as well. Besides, the speaker system and its amplifier that your ripping up, most likely is pre wired with these plugs, or something similar, so why not use what's there.  
   

Plugs from right to left on the above photo are: Input (from sound card), left speaker output, DC power (From AC/DC converter), right speaker output

   
I did have to add 1 headphone jack to one of the speaker outputs. If you go this way, you will likely need to do the same thing. The reason is because the amp on a speaker system is usually mounted inside the left or right speaker, therefore wiring for that speaker comes directly from the amp and doesn't pass through a jack simply because there is no need. Adding one is a simple matter of soldering 2 wires to a spare jack and then finding someplace for the jack to live as I did.
 



Construction Steps:


Without going into to much detail, here are my basic steps of construction in case you haven't got it all figured out.

  1. Disassemble the speakers your using for this project and take stock of what you have. If you don't have speakers, buy a cheep set for 10 bucks at your local PC shop. Its worth the money, unless of course you want to build the amp from scratch as well.

  2. Mount your amplifier so that it sits in a 5 1/4" case location. Or a 3.5" if your inclined

    You have 2 options here really. You can either mount it directly to a panel, so that the "mounting system" for the amp when finished is nothing more then the clips that hold in that face plate. Or you can make a tray for it to sit in, using the plate as a "front face" for your finished amplifier. Choice 2 is the way I went as you can see.

  3. Mount the amp and begin running wires for output.

    Remember your amplifier will have a Left and Right channel output. Often, one is a quick disconnect type for feeding the speaker that DOESN'T have the amplifier installed in it, and the other will be hard wired to the amp itself, offering a direct connection to the speaker from the amplifier. For example, the Labtech speakers had the amplifier in the right hand speaker. The actual speaker was wired directly into the amp, where there was a headphone jack on the amp for where the left speaker would plug in. Run these wires to wherever you are mounting your speakers.

  4. Install and wire your speakers.

    Find a nice spot to mount your speakers, whether it be in the front panel like mine came, or somewhere else. If your really creative, and your speakers are small enough, you may decide to mount them into another 5 1/4" slot. This is actually what I wanted to do, but my speakers proved to big to fit. =(

  5. Run your input wire.

    Your speaker set would have come with a wire that went from the sound card's output, to your speaker systems input. This will still be the case here, though the wire will now run from your sound card back into your computer, and into the amplifier.

    I skipped this step myself because the Wind Tunnel II already had a 2 speaker system installed which was pre-wired, using the case's port replicator system, right from the sound card's output.

  6. Run a power wire.

    Your speakers would have come with an AC/DC power source. You have 2 choices for this really. You can wire the AC/DC adapter directly into the 110 volt section of your power supply or you can keep it external. Because I didn't want to invalidate my new Fortron Source power supply's warranty I decided not to wire directly but this is a matter of personal choice. The obvious advantage of wiring to the PSU would be the fact that you dont't need to carry another plug around with you and EVERYTHING in this install would be internalized. The disadvantage of course, is this isn't something you should do if you don't know what your doing and as mentioned, there is no warranty on moded power supplies.

    If you were to do it, the best way is to crack open that AC adapter, and solder the 2 wires onto the 110volt in main (what the power cord goes into), or the 110volt out auxiliary (the other plug in the power supply). Soldering insures your install wont come apart and fry everything in your PSU.

  7. Finnish up.

    This is self explanatory. Simply install and test it. Some things to look for in your finished instal would be:

    - Wiring neat and not interfering with fans
    - Amp mounted securely
    - Speakers mounted securely

    TIP: even though they are shielded, keep speakers as far from hard drives as you can. Better safe then sorry.

    -Amp is securely mounted without metal on metal contact with the circuit board
    -Any current carrying AC or DC wires are secure and soldered
    -As much obstruction as possible between your speakers and the outside world is removed.


Final Words:

Ok, you wont get Movie theater surround sound out of this setup, DUH !! But, if your bringing your system down to a buds place, or to a bigger LAN event, having 1 less thing to carry and one less cable to forget is a nice deal. Not only that, but you have handy volume and tone control as well. If you don't want to use your new amplifier, you can always plug in the headphones, or you can unplug the amps input from the sound card and hook it up to a set of external speakers. Remember with this amp on the front panel, we have a headphone jack and with it a volume controller, which means no minimizing your game to adjust volume levels to the headphones.

Oh, one more thing, if you have a REALLY nice set of desktop speakers, don't rip them up, they wont sound as good in your case.

Do take this from me though. I have brought this tower down to LAN parties, and not only does this amp/speaker system work, but it sounds as good as some peoples primary speakers, and sounds allot better then a cheep set of headphones. That and I love answering the question, just what is that in your case ?