More thumping bass? You came to the right place. Don't worry, you're not alone - not everyone are using bassy PC speakers / headphones. This instructables will teach you to add more bass without destroying the rest of the sound.

/**Updated on 19 May 2015**/
- foobar2000 v1.3.8
- revised instructions
- freesurround plugin added

Let's get started:

1.) Get foobar2000 (for Windows)
Click here for the portable version with some added plugin. No installation required, but may need admin privilege.

2.) Inspect your subwoofer
Most subwoofers you find on the market are ported which means they have a port or a hole which lets the air in and out. Ensure the port is clear of obstacle first before proceeding.

Then make sure you have no air leak from the subwoofer box, and your subwoofer foam (rubber surround) is not deteriorated. These steps are to prevent unnecessary distortion.

3.) Find where your subwoofer sounds best.
There is a thing called sweet-spot for subwoofer. You can place it under the table, facing the wall, behind a cupboard etc to find out where your subwoofer sounds best.

Every room have different acoustic feedback or characteristic, therefore this step will consume some time.

I noticed that my megaworks 550 subwoofer sounds best when it sits under my computer table. However the downfiring sub does not play well with the desk such that it rattles the desk occassionally. I tilted the subwoofer (Pic 7) and the rattle is gone.

4.) DO NOT MAX the bass knob!
Upon investigation, most bass knob only act as either attenuation knob or fixed equalizer knob. Maxing this knob doesn't help you get more optimal bass. Find out which position gives you the smoothest bass. And then foobar2000 will take it from there.

5.) Test your subwoofer frequencies response.
Use this online frequency generator to check your subwoofer frequency response.

Listen from 100Hz to 30Hz without changing your volume level. Then take note which frequencies you wanted more or less. If your subwoofer is smaller than 6.5" you can stop at 40Hz instead.

Step 1: Add some bass!

By now you would be curious to know how are you going to get that thumping bass without compromising the mids and trebles. What you are going to do is to keep the bass and reduce the rest (Pic 1).

Run foobar2000 and enable SH-1 Equalizer (Pic 2)
- in foobar2000 press CTRL+P
- At the left column select Playback > DSP Manager
- Enable SH-1
- Click OK

Configure SH-1 (Pic 3)
- Go to View > DSP > SH-1 Equalizer
- Turn it on (left top corner lit)
- Reduce the input gain on top left bottom
- Boost the bass on 30hz and 40hz
- Play your favorite bassy music!

Check for distortion (Pic 4)
- in foobar2000, press CTRL+P
- At the left column select Playback > DSP Manager
- Enable Voxengo SPAN and make sure it is most below position
- Hit OK
- in foobar2000 go to View > DSP > Voxengo SPAN
- On top left corner select 2 (for 2 channels)
- Click Edit on top right corner, and adjust some sliders according to Picture 1
- Carefully read the clipping value and ensure it's always 0 even when the bass hits hard

Note that the input gain will need to be reduced each time bass is added. if you just add around 6dB of bass you most likely only need to reduce the input gain to 50%. But if you add something like 12dB you might need to reduce the input gain more to prevent clipping.

Caution: I am not responsible for your subwoofer / headphone / ear damage if you set too much bass or allow too much clipping. You have been warned!

If you're using small speakers, you may want to use 63Hz or 100Hz point instead.

The 150Hz, 250Hz and 400Hz points are useful for adding some midbass that will be decreased as you add more low bass. Speakers with small satellites will benefit from some increment in those points. In my test using Logitech Z623, just a mere 2.0dB increment in those points give me better midbass coming out of the tiny satellites. Not as good as the Z Cinema, but certainly much better than original.

<p>YES! Klipsch is the first commercial manufacturer... They do sound sweet. I have the old Pro Media 5.1 with dual 8's and it's pretty sweet. However, the Polk 12 is mBA</p>
<p>They make really good speakers, too bad they pair it with short-lived amps. The iFi I mentioned above died on me few years ago. it was easily the best 2.1 computer speakers available 400$ can buy until today. </p>
<p>I have the Klipsch promedia 4.1's which were purchased around 1999 and still use them today. There are a few reasons they died on people prematurely. Once plugged in, the amp was always on (bad idea) So I drilled a small hole in the amp back-plate and connected a toggle switch to kill power when not in use.</p><p>Because they were always on, a few resistors and a diode would overheat a section of the pcb turning it black and it would ruin those components and possibly the circuit pathway. The trick was to remove those components, replace them w/ higher capacity components of the same value, and elevate them off or away from the board during replacement.</p><p>Then I tapped into the AC power feed, connected a step-down DC transformer (12 volt wall wort), and used a 12 cm computer fan to direct airflow to that region on the amp. </p><p>The promedia 5.1's suffered the same overheating design flaw and the fix is slightly more extensive but essentially the same. You can see the board turning black from overheating on the upper right side in the pic. </p>
<p>yeah, it's a pity those great PC speakers didn't make it. they don't make them like they used to. my cambridge soundworks 550 also died by itself when I arrived home from a month vacation. </p><p>i have opened the iFi and even send it to a few technician to no avail. i even replaced all the caps and found out the amps are TDA8924 and TDA8920. there are no burnt components at all. well they're digital so without a manual i am completely clueless. </p><p>finally decided to save and go for proper receiver with bookshelf setup. there are days i would miss having simple good-sounding 2.1 like the iFi where I can just plug an iPod and use the RF remote to play some music. but those days are just gone.</p><p>i am happy for the fact that your promedia 4.1 is still kicking ass! a friend bought my altec lansing ada885 which was once a cheaper alternative to the promedia 4.1 back in 2000 and he is still using it today.</p>
<p>There is a guy who advertises on fleabay named Stpeteshepherd who offers his services for the old Klipsch 4.1 &amp; 5.1 systems. Some people won't easily give up on those systems because they sound phenomenal. Klipsch refused to disclose a schematic for those Bash amps so he mapped out them out himself. I did my own repair but he pointed me in the right direction. I also have a set of the Z-5500's and they're louder but the sound isn't quite as nice as the Klipsch.</p>
<p>Thanks it worked like a charm on my Cambridge CSW130 but I have a question and that's how do you decrease the amount of clipping?</p>
<p>You will have to reduce the input volume in the SH-1 Equalizer (knob on the left bottom corner) so you will have to turn up the main volume in the end. If it still clips, try to reduce the bass knob, small subwoofer distorts easily.</p>
KLIPSCH.....one of the greatest speaker that i've ever heard..lol...
i cant figure out how to get to step 1
hi, in foobar2000, navigate to &quot;View&quot; on top of the window, click it and select &quot;Equalizer&quot;. <br><br>Once the equalizer is ticked (enabled), you can increase and 55hz bar to get more bass, but remember to click auto-level each time you increase it.<br><br>hope this helps, good luck!
haha sweet<br /> I was reading and&nbsp;I see papertube mod on Edifier MP300? :P<br /> was happy to hear you still remember this mod :D
lol. of course i should. it's one great trick i found few years back. anyone using Edifier MP300 / MP300+ should use it. <br />
Why do you consider SRS&nbsp;Audio Sandbox and Dolby Prologic&nbsp;IIx to be &quot;creepy&quot;?<br />
SRS makes the sound quality very fake.<br /> trebles sounded like plastic bag lol<br /> and sometimes there's too much trebles and you can't reduce it :(<br /> <br /> that dolby thing...I dunno lol
The SRS, i found both the Sandbox and TruSurround that comes with my logitech z cinema are overrated. using couple of freeware such as foobar2000 above it makes things sounds better. the only SRS I used is the windows mobile version.<br /> <br /> and for the DPLIIx, my laptop has it embedded. Doesn't sound good at all, perhaps they just reverse the matrix of front speakers for the rear channels. However, I turn them on so they upmix things from internet like youtube.<br />
0_0 It has a spectrogram!? SO&nbsp;COOL!! I can see phasing!<br /> <br /> Is there any way to wire this so that it displays the spectrogram of a real-time line in or microphone? Or do you know of any other freeware real-time spectrum analyzers? I don't have a good way to visually monitor things in high detail when I'm mastering in Reason (the vocoder trick works, but it's not a large display).<br />
Regarding the spectrogram, i'm not really certain. However, you could check at the official forums at <a href="http://www.hydrogenaudio.org/forums/" rel="nofollow">www.hydrogenaudio.org/forums/</a><br /> <br /> Compared to WMP, of course foobar2000's EQ&nbsp;sounds much better. I have not touch WMP for music playback since i use foobar2000. lol<br /> <br /> thanks and enjoy...<br /> <br /> <br />
Yeah, I&nbsp;just found a bunch of stuff. This website has lots of downloads and you can filter by freeware etc: http://www.hitsquad.com/smm/<br />
Thank you!!!!! This is wonderful! Two things were really starting to piss me off about WMP:<br /> 1) Single-band compression causing ducking of my low-end when the high end peaked, giving that obnoxious &quot;wobbly&quot; sound. (I'm a big audiophile)<br /> 2) It seems like it's been taking longer and longer to start up. <br /> <br /> I use VLC, primarily for FLAC and streaming, but I&nbsp;don't like it's UI and lack of library support. I&nbsp;am giving foobar a shot and it looks like it's going to be a good match :)<br />

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