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
Amplifiers
Setting my gains correctly...
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="ps2cho" data-source="post: 6615894" data-attributes="member: 578373"><p>So I have a 12" JBL GT5 sub running on a dual xpa2500 @ 150W RMS bridged. Yeh amp is cheap, but it does what I want for the price.</p><p></p><p>I would like to set the gains correctly although from what I have read I am very unlikely to damage the sub because it is rated for 275W RMS and I am running it at 150W RMS.</p><p></p><p>So let me get this straight...</p><p></p><p>150W RMS x 2ohms impedance on sub = 300</p><p></p><p>Sqrt 300 = ~ <strong>17.3v</strong></p><p></p><p>Now I turn off all bass boost and put normal listening volume on deck then read the + - with DMM on amplifier /w sub NOT attached and keep adjusting dials until I get 17.3v?</p><p></p><p>Do I need to bring my bass + sub bass on HU to zero? <em>when</em> do I adjust the HU settings?</p><p></p><p>Thanks</p></blockquote><p></p>
[QUOTE="ps2cho, post: 6615894, member: 578373"] So I have a 12" JBL GT5 sub running on a dual xpa2500 @ 150W RMS bridged. Yeh amp is cheap, but it does what I want for the price. I would like to set the gains correctly although from what I have read I am very unlikely to damage the sub because it is rated for 275W RMS and I am running it at 150W RMS. So let me get this straight... 150W RMS x 2ohms impedance on sub = 300 Sqrt 300 = ~ [B]17.3v[/B] Now I turn off all bass boost and put normal listening volume on deck then read the + - with DMM on amplifier /w sub NOT attached and keep adjusting dials until I get 17.3v? Do I need to bring my bass + sub bass on HU to zero? [I]when[/I] do I adjust the HU settings? Thanks [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Equipment
Amplifiers
Setting my gains correctly...
Top
Menu
Home
Refresh