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
Log in / Join
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 Equipment
Subwoofers
Would like advice on this set up
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="Jeffdachef" data-source="post: 8601202" data-attributes="member: 650438"><p>HORRIBLE BOX fking garbage, never look at sh*t like that again, BURN IT NOW. That is actually closer to 1 cube after displacement. Not 1.75 usable. Its Gross cubic feet meaning before you subtract the space the port and sub takes up. That port is waaay too small as well, might as well have a leaky sealed box. Complete and utter box design fail.</p><p></p><p>Also if you were using a 0 db test tone with the multi-meter method, you did it wrong and are completely undergained because most music is recorded with -10 db levels of bass so you basically fked yourself out of all that possible output. Thats why the DMM method is completely and severely flawed, we dont listen to test tones, we listen to music. music is dynamic and has different levels of bass in the recording that directly affects the head unit pre-out which directly affects amplifier output.</p><p></p><p>Better way to set gain is via heat tests, play your hardest hitting song, turn it up till it stops getting louder, then back it down a few notches. Play music for 5 mins carefully monitoring the sub and amp for heat and any wierd smells coming out of the sub. If the temperatures are ice cold after 5-10 mins of play time, you are undergained and have a bit more to go. If its slightly above room temperature to mildly hot then its good. If either the sub's dust cap or amp is burning hot, then back it down, either you are clipping or you dont have enough electrical support or there's not enough ventilation for the amp.</p><p></p><p>So how do you have your current polk facing in the vehicle and how far away from the trunk/hatch is it.</p></blockquote><p></p>
[QUOTE="Jeffdachef, post: 8601202, member: 650438"] HORRIBLE BOX fking garbage, never look at sh*t like that again, BURN IT NOW. That is actually closer to 1 cube after displacement. Not 1.75 usable. Its Gross cubic feet meaning before you subtract the space the port and sub takes up. That port is waaay too small as well, might as well have a leaky sealed box. Complete and utter box design fail. Also if you were using a 0 db test tone with the multi-meter method, you did it wrong and are completely undergained because most music is recorded with -10 db levels of bass so you basically fked yourself out of all that possible output. Thats why the DMM method is completely and severely flawed, we dont listen to test tones, we listen to music. music is dynamic and has different levels of bass in the recording that directly affects the head unit pre-out which directly affects amplifier output. Better way to set gain is via heat tests, play your hardest hitting song, turn it up till it stops getting louder, then back it down a few notches. Play music for 5 mins carefully monitoring the sub and amp for heat and any wierd smells coming out of the sub. If the temperatures are ice cold after 5-10 mins of play time, you are undergained and have a bit more to go. If its slightly above room temperature to mildly hot then its good. If either the sub's dust cap or amp is burning hot, then back it down, either you are clipping or you dont have enough electrical support or there's not enough ventilation for the amp. So how do you have your current polk facing in the vehicle and how far away from the trunk/hatch is it. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Equipment
Subwoofers
Would like advice on this set up
Top
Menu
Home
Refresh