Question about Koss EQ50 Home Equalizer

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Bass frequncy I can't get a good bass sound. I record at EQ default settings then adjust them when mixing. The signal is always too lo and if I crank it the signal distorts. I am recording through a direct box to Zoom HD 8 track. The EQ's are EQ Hi G=?/ EQ Hi F=? EQ Mid F=?/ EQ mid Q=/ and EQ Lo G=/ EQ Lo F=

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Also bear in mind those are crappy eq's in that zoom, personal recorders are great but aren't known for pre-amp and eq quality, etc. If you're recording at proper levels and with no eq and there's no clipping on playback either then I would say you may be tweaking the eq more than it can handle when you use it. Try not boosting freqs so much, generally anything over a 6db. boost is drastic, especially with the lousy Q of cheap eqs. Try attenuating highs instead of boosting lows so much, I'm afraid yer just gonna have to live within the limitations of the equipment or get an outboard eq in front of the D.I. box and eq it during tracking or get an external recorder for mixdown and put the eq between the zoom and mixdown recorder and eq during mixdown. Here's a little trick that may help - when mixing turn the volume way down low for a minute till you can barely hear it then turn it up a bit more and see if the balance of the highs and lows is good, it will give you a general balance wich will sound good at higher levels. Volume level when mixing affects the way we hear, the frequency response curve of the human ear is totally nonlinear, we hear freqs differently at varying levels, mix too loud and it will tend to be bass light, mix too low and it will tend to be bass heavy, the fletcher munson equal loudness contour curves wich express the ears frequency response graphically, indicate that the nearest to flat response is at 85 db. spl

Posted on Aug 06, 2008

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Check that the wiring to the monitors are in-phase: Pos. to pos., neg. to neg. - from the amplifier.

Posted on Jul 29, 2008

  • Winecellar Jul 29, 2008

    Also, if your negatives are not properly connected to the amp's negative but connected together instead, then they are "floating ground" which will kill the bass reproduction when the speakers are in phase. It gets even worse if you have this situation and the music source is monaural.


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Hi there,
Although I am not familiar with the Zoom HD 8 Track I am a former sound engineer so may be able to offer some general advice.
Firstly, because the wave pattern of low frequencies is very long, there are a number of things that will greatly effect bass response caused by standing waves.
1) The position of your bass monitors. Ideally these should be low down but not directly on the floor, especially if the flooring is wooden.
2) Try your monitors/speakers at a slightly different angle. Bass can bounce off walls, back towards the sound source and phase out the signal, rather like a noise cancelling system.
3) Try listening to the sound in different areas of the room. You will be amazed at how the sound pressure level will vary, simply by you moving from one position to another.
4) Never put bass tracks exactly at centre, always offset them slighly by a few degrees left or right.
5) Do some of your mixing using headphones, you will not have to worry about standing waves. But remember that things sound very different on speakers in free space.
Strangely, the reason you are getting distortion when you turn things up is probably because your bass is on the verge of over modulation to start with. Really bass is felt, not heard. You could try is to decrease your mid and high frequencies a little. The ratio between high frequencies and low ones will then increase by default and your bass may feel heavier.
What are you mixing?

Posted on Dec 31, 2007

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