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
General Car Audio
Subwoofer Gets Louder and Quieter
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="fireplace369" data-source="post: 8632540" data-attributes="member: 674783"><p>Hi.</p><p></p><p>The problem I am experiencing is that after 5-7 minutes of my music playing my subwoofer by itself decreases in volume as well as overall intensity. This problem pretty much only occurs when the car is at idle. This hardly happens while I'm driving around. This problem also happens after the same time frame after I stop driving and listen to my music while at idle. Once this volume drop happens it stays like this until I stop listening to music altogether for awhile, or I shut my car off and come back later (which is my assumption that the batcap is charging during this time). I cannot figure out my problem.</p><p></p><p>This is everything I have in my system and what I have done so far to troubleshoot:</p><p></p><p>I have a 2001 Saab 9-3 car. The subwoofer is a brand new Alpine R-W10D4 wired in parallel to 2 ohms powered by an Alpine MRV-M500 amp. This amp provides a little over 500 watts (which is in the correct RMS range for this sub). All of my power cable is 4 AWG OFC from the battery to my batcap, and from my batcap to my amp. My batcap is a XStatic Model 400 which says it's rated for 1,100 to 1,300 watts. My cable from my amp to my sub is 10 AWG OFC cable and all of the cables inside my sub box and cables connecting the voice coils are 10 AWG. The ground for the system is right next to the batcap and goes to a bolt at the bottom of a seatbelt (which is bolted to the frame; the bolt was hit with a wire brush to take off the paint). Mu heat unit is a JVC KD-A805 which was made in 2009. My alternator puts out 130 amps. My regular battery is only a year old and it is a Diehard Gold.</p><p></p><p>Lastly, I used a multimeter to test the voltage of the system before this volume drop occurred and after it occurred (since it stays at this lower volume once it occurs) and the voltage remained the same the entire time. The voltage was from around 14.3-14.4 volts (the voltage did drop when other parts of my car turned on such as the fan to cool the radiator, etc. but then the voltage immediately went back to 14.3-14.4 volts).</p><p></p><p>I did blow my last subwoofer, which was the exact same make and model, due to having incorrect wire gauges which caused my amp to clip (I thought it was right but I guessed since the cables had no AWG rating on them). So the amp clipping could have damaged it, but I don't know why everything would work great for 5-7 minutes and then get more quiet after, or while driving have it not happen at all.</p><p></p><p>I spoke with XStatic specialists and a reputable car audio store near me multiple times and they believe it is either my amp, or the sub line out port on my head unit.</p><p></p><p>I am out of ideas of where this could be coming from. If anyone could help me that would be greatly appreciated.</p></blockquote><p></p>
[QUOTE="fireplace369, post: 8632540, member: 674783"] Hi. The problem I am experiencing is that after 5-7 minutes of my music playing my subwoofer by itself decreases in volume as well as overall intensity. This problem pretty much only occurs when the car is at idle. This hardly happens while I'm driving around. This problem also happens after the same time frame after I stop driving and listen to my music while at idle. Once this volume drop happens it stays like this until I stop listening to music altogether for awhile, or I shut my car off and come back later (which is my assumption that the batcap is charging during this time). I cannot figure out my problem. This is everything I have in my system and what I have done so far to troubleshoot: I have a 2001 Saab 9-3 car. The subwoofer is a brand new Alpine R-W10D4 wired in parallel to 2 ohms powered by an Alpine MRV-M500 amp. This amp provides a little over 500 watts (which is in the correct RMS range for this sub). All of my power cable is 4 AWG OFC from the battery to my batcap, and from my batcap to my amp. My batcap is a XStatic Model 400 which says it's rated for 1,100 to 1,300 watts. My cable from my amp to my sub is 10 AWG OFC cable and all of the cables inside my sub box and cables connecting the voice coils are 10 AWG. The ground for the system is right next to the batcap and goes to a bolt at the bottom of a seatbelt (which is bolted to the frame; the bolt was hit with a wire brush to take off the paint). Mu heat unit is a JVC KD-A805 which was made in 2009. My alternator puts out 130 amps. My regular battery is only a year old and it is a Diehard Gold. Lastly, I used a multimeter to test the voltage of the system before this volume drop occurred and after it occurred (since it stays at this lower volume once it occurs) and the voltage remained the same the entire time. The voltage was from around 14.3-14.4 volts (the voltage did drop when other parts of my car turned on such as the fan to cool the radiator, etc. but then the voltage immediately went back to 14.3-14.4 volts). I did blow my last subwoofer, which was the exact same make and model, due to having incorrect wire gauges which caused my amp to clip (I thought it was right but I guessed since the cables had no AWG rating on them). So the amp clipping could have damaged it, but I don't know why everything would work great for 5-7 minutes and then get more quiet after, or while driving have it not happen at all. I spoke with XStatic specialists and a reputable car audio store near me multiple times and they believe it is either my amp, or the sub line out port on my head unit. I am out of ideas of where this could be coming from. If anyone could help me that would be greatly appreciated. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Discussion
General Car Audio
Subwoofer Gets Louder and Quieter
Top
Menu
Home
Refresh