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Thread: Hardware EQ: studio or PA quality?

  1. #11
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    Thanks for all the info so far. The speakers are by Elac. They were priced at less than half the normal price. I drove quite far to listen to them. The room in the shop was very high and reflective. So I guessed that caused the powerful bass. I couldn't take them home to try and eventually return them. So at the price I took the gamble and was wrong.
    These speakers have great reviews. I used to have big Philips speakers which never had this problem. It seems over the decades, speakers have become more aggressive and actually smaller at the same performance of old big ones. I guess they are just too big.
    The sound is really good. Just when the bass goes below 80Hz towards 0Hz the volume increases beyond normal. When I play "Moon Safari" by "Air" the bass pressure overwhelms all. It is as if I have a subwoofer which I don't want.
    If you read the speaker curve from right to left (high freq to low freq) it seem to ramp up from 80 to 0 Hz.
    Since the Ashly 3102 is only $100 I had hoped this might be good enough to help me out. As you can read, I only need to tame a very small part of the audio curve. But since the hifi set consists of quite good stuff, I don't want to introduce mediocre material. Is it so much better to get a parametric filter? Less noise? Much more exact? I don't need "musical" coloration of course. If the graphic EQ does that, than it is wrong.

  2. #12
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    Ah yeah let me add: if I place the speakers away from the corner and walls the bass does get less but A. not enough and B. I'm kinda stuck where I can put them.

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    I can sorta read the specs but what you say, isn't this good quality?

    https://ashly.com/wp-content/uploads...8/gqx-3102.pdf

    Plus it has a tunable hi-pass filter. Isn't that more or less the parametric correction I need?

  4. #14
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    The frequency response, distortion and noise ratings are all fine for what you're doing. The HPF is a bit too steep, 6dB per octave would be better to fix the placement issue, but you can certainly use the eq to get the speakers a lot closer to what you want. It's technically not the ideal way to do it, but if you like it, why not?

    The one thing you'll need to be aware of is interfacing home audio signal to the pro interface of the eq. The eq has +4dBu balanced connection while your home audio has -10dBV unbalanced. The noise specs are low enough that the level difference probably won't be a problem, but sometimes interconnecting unbalanced and balanced can lead to hum issues. First thing to do is just try it with RCA to 1/4" cables. If that gives you trouble then consider building custom cables. It might be easiest to use the Euroblock connectors so you can easily try different options.

    Here's a guide to balanced/unbalanced interconnection: Sound System Interconnection

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