Menu
Forum
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Gallery
New media
New comments
Search media
Members
Registered members
Current visitors
Classifieds Member Feedback
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Log in / Register
Forum
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
Log in / Join
What’s new
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Menu
Reply to thread
Forum
Car Audio Discussion
Subwoofers
Help me get started
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="VereChronicus" data-source="post: 1859328" data-attributes="member: 565864"><p>PFC Pierson,</p><p></p><p>Hooah! First things first....who in the Corps let you talk about yourself like that? You know **** good and well anyone there would kick your ssa for talking that crap. Cut that sh!t out, Marine.</p><p></p><p>Let's talk about ohms first, since they are a real building block in the foundation of audio as a whole. Being that in the simplest form...they are just an impedance to the flow of electrons. The higher the Ohms, the harder something has to work to get electrons through that barrier, be it a speaker or some other device. For amplifiers, they will push a certain amount of power into each Ohms load you stick on them. Since higher Ohms are harder to push power through, the 4ohm speaker will receive less power from said amplifier than it's 2ohm counterpart. If there is a 1ohm speaker, it will see even more than the 2ohm speaker would, from the same amplifier. Amplifiers are rated by power into certain ohm loads, but they are also rated by stability. Some amps are only good for 2ohm stereo operation or bridged to a single 4ohm load. Most of the modern class D amplifiers are stable into 1ohm mono operation. Most amplifiers are rated to produce X amount of power into 4ohms per channel and they say that the power doubles to 2X when you drop to 2ohms per channel. My suggestion is to look at the lowest stable ohms the amp can work with to figure your power output. If it says 2 x 150w @ 2ohms then you can count on a bridged 4ohm load to produce that same power into one channel; 300w. To get that 4ohm load, you'll need your sub(s) to equal 4ohms. If one sub, then it is simple with a single 4ohm subwoofer. If you have 2 subwoofers, you'll need to get DVC 4ohm or (Dual Voice Coil 4ohm) subs. When they are wired with their coils in series, they become single 8ohm subwoofers. After each is wired to be an 8ohm speaker, you can wire those to subs in parallel to produce a single 4ohm load on your amplifier. Hope that cleared up any fog that might have been there. The difference between Single and Dual voice coil subs just means more wiring options can be had with DVC subs. They don't necessarily handle more power or get louder, they offer more options for wiring.</p><p></p><p>Brown Bread sound deadening material will work just fine. Use a heat gun when applying it AFTER you thoroughly clean all surfaces with denatured alcohol.</p><p></p><p>The Pioneer should have the outer RCA grounded to the same ground as the head unit ground wire. The new ones just seem to have or quickly after installation, generate a ground potential differential that causes noise. Do that right away and it should never get the chance to show up. Initiative; a USMC trait!</p><p></p><p>To better point you in the direction of a matchin sub or pair of subs, we need to know your height and seating position. If you are 5'8" or shorter, you can put a pair of 10's back there with some kick ssa &amp; take names performance. If you are a little taller, the seat moves back further and you now have room for a single 12" or pair of 8's in a medium sized vented enclosure that will make the best use of the available space. If you are a tad taller than that, you move down to a single 10". If you are really tall and it's all the way back, a single 8" may be all you can fit. If you want performance...as in bang your teeth to pieces output for the least amount of money involved, you have to vent the system. The amp can be smaller, which costs less and you can run a smaller subwoofer which also costs less. The port does tons of the work for the sub and it's basically free output.</p><p></p><p>Questions Pierson?</p></blockquote><p></p>
[QUOTE="VereChronicus, post: 1859328, member: 565864"] PFC Pierson, Hooah! First things first....who in the Corps let you talk about yourself like that? You know **** good and well anyone there would kick your ssa for talking that crap. Cut that sh!t out, Marine. Let's talk about ohms first, since they are a real building block in the foundation of audio as a whole. Being that in the simplest form...they are just an impedance to the flow of electrons. The higher the Ohms, the harder something has to work to get electrons through that barrier, be it a speaker or some other device. For amplifiers, they will push a certain amount of power into each Ohms load you stick on them. Since higher Ohms are harder to push power through, the 4ohm speaker will receive less power from said amplifier than it's 2ohm counterpart. If there is a 1ohm speaker, it will see even more than the 2ohm speaker would, from the same amplifier. Amplifiers are rated by power into certain ohm loads, but they are also rated by stability. Some amps are only good for 2ohm stereo operation or bridged to a single 4ohm load. Most of the modern class D amplifiers are stable into 1ohm mono operation. Most amplifiers are rated to produce X amount of power into 4ohms per channel and they say that the power doubles to 2X when you drop to 2ohms per channel. My suggestion is to look at the lowest stable ohms the amp can work with to figure your power output. If it says 2 x 150w @ 2ohms then you can count on a bridged 4ohm load to produce that same power into one channel; 300w. To get that 4ohm load, you'll need your sub(s) to equal 4ohms. If one sub, then it is simple with a single 4ohm subwoofer. If you have 2 subwoofers, you'll need to get DVC 4ohm or (Dual Voice Coil 4ohm) subs. When they are wired with their coils in series, they become single 8ohm subwoofers. After each is wired to be an 8ohm speaker, you can wire those to subs in parallel to produce a single 4ohm load on your amplifier. Hope that cleared up any fog that might have been there. The difference between Single and Dual voice coil subs just means more wiring options can be had with DVC subs. They don't necessarily handle more power or get louder, they offer more options for wiring. Brown Bread sound deadening material will work just fine. Use a heat gun when applying it AFTER you thoroughly clean all surfaces with denatured alcohol. The Pioneer should have the outer RCA grounded to the same ground as the head unit ground wire. The new ones just seem to have or quickly after installation, generate a ground potential differential that causes noise. Do that right away and it should never get the chance to show up. Initiative; a USMC trait! To better point you in the direction of a matchin sub or pair of subs, we need to know your height and seating position. If you are 5'8" or shorter, you can put a pair of 10's back there with some kick ssa & take names performance. If you are a little taller, the seat moves back further and you now have room for a single 12" or pair of 8's in a medium sized vented enclosure that will make the best use of the available space. If you are a tad taller than that, you move down to a single 10". If you are really tall and it's all the way back, a single 8" may be all you can fit. If you want performance...as in bang your teeth to pieces output for the least amount of money involved, you have to vent the system. The amp can be smaller, which costs less and you can run a smaller subwoofer which also costs less. The port does tons of the work for the sub and it's basically free output. Questions Pierson? [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Discussion
Subwoofers
Help me get started
Top
Menu
What's new
Forum list