Menu
Forum
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Car Audio Discussion
General Car Audio
Car Audio Build Logs
Car Audio Equipment
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Help
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Car Audio Classifieds
Car Audio Wanted
Classifieds Member Feedback
Gallery
New media
New comments
Search media
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Test
Forum
Search
Search titles only
Search titles only
Log in / Join
Search
Search titles only
Search titles only
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Menu
Reply to thread
Forum
Car Audio Discussion
Car Audio Build Logs
Strange frequency behavior of new installation
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="cartraveller" data-source="post: 8710926" data-attributes="member: 680513"><p>Hi,</p><p></p><p>I'm new on this forum. I'm from The Netherlands and have a Toyota Landcruiser 150 from 2018. The original speakers are removed and replaced by an installer. My new gear is:</p><p>- Exact HX20 tweeters for the highs</p><p>- Gladen Zero 130 for the mids</p><p>- German Meastro EV6908 woofers for the lows</p><p>- A Mosconi 130.4 DSP amplifier / processor is installed. Has 4 channels. 2 channels for the lows and two channels for the combined mid & highs.</p><p></p><p>When I measure the frequency curve of the German Meastro and the mid/highs separately (without EQ, filtering etc.), the result is very strange. See attached picture from REW.</p><p></p><p>I know that the original setup has a HUGE emphasis on bass (as you can see), so that doesn’t surprise me. But the German Meastro should be more or less flat untill 1 or 2 Khz at a minimum I guess (Can’t find in in the specs). The Gladen Zero 130 mid unit has a flat curve until 125 Hz according to the specs. The measurement doesn’t even come close! I have a huge dip in the mid area!</p><p></p><p>First I thought the mids were not connected (the frequency curve of the mid/high combined is almost the same as the natural slope of the tweeters alone <img class="smilie smilie--emoji" loading="lazy" alt="😊" title="😊" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f60a.png" />), but it seems they are connected. What could be reason for this strange behaviour? I can think of two options:</p><p>1) The original crossover filters have not been removed by the installer (although, the installers states that they always remove the crossover filters) à is there an easy way to check this? (I’m not comfortable to remove side panels in my car etc.)</p><p>2) The head unit is already filtering the signal à Is that ‘normal’ form head units? Apparently, it is also boosting the bass, so some kind of DPS processing must be going on inside I guess</p><p>3) ..... any other explanation that I didn't think off?</p><p></p><p>Hope you can help me out on this.</p></blockquote><p></p>
[QUOTE="cartraveller, post: 8710926, member: 680513"] Hi, I'm new on this forum. I'm from The Netherlands and have a Toyota Landcruiser 150 from 2018. The original speakers are removed and replaced by an installer. My new gear is: - Exact HX20 tweeters for the highs - Gladen Zero 130 for the mids - German Meastro EV6908 woofers for the lows - A Mosconi 130.4 DSP amplifier / processor is installed. Has 4 channels. 2 channels for the lows and two channels for the combined mid & highs. When I measure the frequency curve of the German Meastro and the mid/highs separately (without EQ, filtering etc.), the result is very strange. See attached picture from REW. I know that the original setup has a HUGE emphasis on bass (as you can see), so that doesn’t surprise me. But the German Meastro should be more or less flat untill 1 or 2 Khz at a minimum I guess (Can’t find in in the specs). The Gladen Zero 130 mid unit has a flat curve until 125 Hz according to the specs. The measurement doesn’t even come close! I have a huge dip in the mid area! First I thought the mids were not connected (the frequency curve of the mid/high combined is almost the same as the natural slope of the tweeters alone 😊), but it seems they are connected. What could be reason for this strange behaviour? I can think of two options: 1) The original crossover filters have not been removed by the installer (although, the installers states that they always remove the crossover filters) à is there an easy way to check this? (I’m not comfortable to remove side panels in my car etc.) 2) The head unit is already filtering the signal à Is that ‘normal’ form head units? Apparently, it is also boosting the bass, so some kind of DPS processing must be going on inside I guess 3) ..... any other explanation that I didn't think off? Hope you can help me out on this. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Discussion
Car Audio Build Logs
Strange frequency behavior of new installation
Top
Menu
Home
Refresh