Sub and Amp Advice Please Read First

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  1. #1
    Koolaid_guy

    Sub and Amp Advice Please Read First

    Right many threads are popping up now im after a sub and amp etc on budgets hopefully this should help with giving you advice on a budget sub and amp or choosing your own setup
    Choosing the correct subwoofer

    Choosing the subwoofer is important as is choosing everything else In an audio system

    When working on budgets you need to find the best power for price

    When choosing a sub most spec will consists of these headings

    ·Frequency Response
    ·Sensitivity/efficiency
    ·Impedance
    ·Power Handling, Peak
    ·Power Handling, RMS
    ·Mounting Depth

    Frequency Response
    The Frequency Response is the input signal of the subwoofer and what it can handle

    The response rating is from lowest and the highest of the subwoofer.


    Sensitivity/efficiency
    The sensitivity is the measure of how loud the subwoofer is along side the efficiently of the sub woofer, so the higher the sensitivity the better the sub will as it will be more efficient in theory so if a sub has 89db and then a different sub has 93 the sub with 93 will be more efficient


    Impedance
    The impedance is the subs resistance, this is measured in ohms, (and reading ohms law will be very helpful). this is the current of the sub when wiring to an amp which is very important so if a amp is 4 ohm stable then the sub has to be 4 ohm stable as you CANT wire into 2 ohm as this means to much current will be fed to the sub and knacker your equipment.


    Power Handling, Peak
    The peak power of the sub woofer is the maximum the sub can take at any given time.


    Power Handling, RMS
    This is the continuous power of the sub woofer, this is a rated power that the sub can handle so the higher the RMS the power powerful the sub is.


    Mounting Depth
    This is the depth the sub needs when being mounted in a enclosure

    Subwoofer wiring

    You can get 2 different types of subwoofer single voice coil and dual voice coil subs

    Single voice coil have one set of terminals

    Dual voice coil have two sets of terminals

    This means you can wire the dual voice coils in more ways than a single voice coil sub.

    Subwoofer Enclosures

    Right there are different types of enclosures these are

    ·Sealed
    ·Ported
    ·Bandbass

    The generic information about these boxes’s

    ·Sealed box — sealed box are a enclosure which are airtight. These are recommend for music that will require tight and accurate bass. Some say that a sealed box requires the sub to work harder which means it will require more power as there is no airflow to the sub

    ·Ported box — Ported box these a box with a vent (port) in them, this will allow are to move in and out of the enclosure. This air flow ,means that it can reinforce low bass response swell as getting more output from the enclosure.

    ·Bandpass box — Bandpass box’s these a a ported box designed for maximum performance. The sub is mounted inside the box where there is two sections inside a sealed and ported sections. The sound is forced from the sealed part into the port this can be configure to require frequencies.

    Selecting your amplifier

    When looking at sub and amp combos you need to make sure your amp will be able to power your sub at the given power ratings

    In my opinion monoblock is the best amp for powering subwoofers as these are designed to give out mono signals.

    A monoblock amp can power more than one sub, so in theory you can run two subs or more of one monoblock amp

    Basically then when looking at an amp you need to make sure it can power sub at a given RMS power

    You need to look for the correct impedance between the sub and amp

    So if the amp will support 4 ohm or 2 ohm loads then it would be best to get a sub that can be wired into on of these impedances.

    Ideas for budget subs and amps and suggestions here is some I have used/ seen recommended but at the end of the day it us you using the equipment and your choice on what you by these are just ideas

    http://caraudiosecurity.com/shop/product/products_id/4027.html
    http://caraudiosecurity.com/shop/product/products_id/3891.html
    http://caraudiosecurity.com/shop/product/products_id/4250.html


    This is a guide and if anything goes wrong when fitting or anything ever went wrong with a brand suggested this is a guide and suggestion therefore you are at your own risk, I am not liable to anything it is only a guide, if you are in doubt, ask/search around

    This can be left open for suggestions/discussions if i have missed anything let me know


    Cheers

    Mike

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  3. #2

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    what about subwoofer sizing? i myself am actually curious, as to what size would handle what type of music better?

  4. #3

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    Frequency Response
    The Frequency Response is the input OUTPUT? signal of the subwoofer and what it can handle

    The response rating is from lowest FREQUENCY? and the highest FREQUENCY? of the subwoofer.







    dont forget the use of the word frequency, confuses alot of folk
    and the response is the subs output, not input

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    How easy is it to wire a sub and amp up? Have the money to spend on a fairly decent set up just don't won't to blow the boat if I won't be able to do it.

  6. #5
    Koolaid_guy
    make a seperate thread buddy so can help further

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    if your after a budget sub go to a polish person...i can get a sub amp cd and wired up for 130 and its all top stuff but i already have an amazing sub

  8. #7

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    Quote Originally Posted by joldrid View Post
    if your after a budget sub go to a polish person...i can get a sub amp cd and wired up for 130 and its all top stuff but i already have an amazing sub
    epic bump AND story bro

  9. #8
    Koolaid_guy
    what an idiot

  10. #9
    North West Organiser holtt's Avatar
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    poles? do you build conservatories?
    Astra GSi 303bhp 340lbft
    http://www.corsa-c.co.uk/forum/showt...43-Holtt-s-GSI
    Bodge-it Motorsport
    Powered by RS Tuning

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    What foes the LPF dial do on edge amplifiers

  12. #11

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    Quote Originally Posted by Coops200691 View Post
    What foes the LPF dial do on edge amplifiers
    Nice bump

    I would make a new thread

  13. #12
    Premier Member Dan Parratt's Avatar
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    Quote Originally Posted by Coops200691 View Post
    What foes the LPF dial do on edge amplifiers
    No point in using it on edge amps or subs tbh

  14. #13

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    New at this, been given a fli trap 12" active sub and unsure about the remote wire to after market head unit . . . (05 corsa)
    cheers

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