Power dan kaitan nya dgn driver
Scuto Laminating Simota Gelap.net

25 Mei 2016 - Payment System Terbaru Untuk Bursa Jual Beli telah kami hadirkan.
Untuk informasi lebih lengkap dapat dilihat di http://modifika.si/630917

Page 1 of 5 12345 LastLast
Results 1 to 10 of 43
  • Thread Tools
  • Short URL:  http://modifika.si/93318
  • Share on facebook
  • Share on twitter
  1. #1
    Kopral Satu
    Posts
    89
    Power
    M-Store Point
    0
    Online
    N/A

    Power dan kaitan nya dgn driver

    Sepertinya title, berapa kah power yang dikatakan under-power, optimal dan over-power utk sesebuah driver ?


    Sebagai contoh, sepasang midbass rated by manufacturer of 100W RMS @ 4 ohm. Apakah power yg dikatakan under-power, optimal dan over-power untuk midbass sini ? Midbass is high Qts driver, install in IB mode in front door panel.

    Assuming the amp is A/B class and it's branded amp (branded like McIntosh, DLS, Audison, Zapco, ARC and so on), 2 channel and rated power at 4 ohm :

    1) 50W X 2ch - Under-power ATAU Optimal ATAU Over-power ?

    2) 100W X 2ch - Under-power ATAU Optimal ATAU Over-power ?

    3) 150W X 2ch - Under-power ATAU Optimal ATAU Over-power ?

    4) 200W X 2ch - Under-power ATAU Optimal ATAU Over-power ?

    5) 250W X 2ch - Under-power ATAU Optimal ATAU Over-power ?

    6) 300W X 2ch - Under-power ATAU Optimal ATAU Over-power ?


    Soalan nya nggak tricky kan ? :p

  2. Delapan Satu
  3. #2
    Mayor
    Location
    Jakarta, Bandung
    Posts
    3,641
    Power
    25 
    M-Store Point
    0
    Online
    4 Days 8 Hrs 14 Mins 7 Secs
    He?
    1. Under power
    2. Optimal.
    3-6. Over power.

    Anything goes above rated RMS in the speaker is overpower, and anything below that is underpower.
    It's very obvious isn't it?
    Lemme gues the next question: which one is better? Overpower or underpower?
    The Beast - Sound Quality Audio Processor
    The Altair - HiFi Speaker

  4. #3
    Kopral Satu
    Posts
    89
    Power
    M-Store Point
    0
    Online
    N/A
    hahahahaha ok...u play play ha ? :p

    nope..that's not the question LOL.

    the next question would be :

    1) people say about headroom thing....so, 200W X 2ch for 100W RMS rated midbass will give it a good headroom...but is it really a good thing ?

    2) so what happen if our current power is 100W X 2ch, then we upgrade to 200W X 2ch to power the same 100W RSM rated midbass ? Any improvement ? If yes, then what's the improvement ?

  5. #4
    Mayor
    Location
    Jakarta, Bandung
    Posts
    3,641
    Power
    25 
    M-Store Point
    0
    Online
    4 Days 8 Hrs 14 Mins 7 Secs
    Headroom, nyuum

    1. Good only if the speaker can handle such a peak in short period of time. Headroom is good for transient peak.
    2. Improvement? If you're pushing your amplifier to the max, you'll burn the voice coil sooner. End of story

    Easy test is just buy an el-cheapo speaker. Well, maybe you can take a cheap one from old stock speaker. And drive them with 2x rated amplifier. Will you notice any improvement? Or will you see the cone breakup?
    Pushing 2 times more power than speaker's RMS is about equal to delivering clipped square wave signal at the same RMS.

    Things to note here is i believe many good quality speaker put underrated nominal RMS in their spec. This is to justify peak while playing. And yeah, if you drive the speaker with larger amplifier the warrantly will usually void.

    Talking about headroom, actually on average we only use maybe 10-30watts of power (given 90dB speaker sensitivity).
    The Beast - Sound Quality Audio Processor
    The Altair - HiFi Speaker

  6. #5
    Kopral Satu
    Posts
    89
    Power
    M-Store Point
    0
    Online
    N/A
    1 more thing i'm confused is about the gain knob or can say the input sensitivity knob.

    i heard people say... "using very high power amp (eg. this 200W X 2ch amp powering the 100W RMS rated midbass in this story) is ok...just minimize the gain" ........true or not ?

    adding more gain is actually adding more power ?? :confused:

    i bring up this question since u said we normally use 10w-30w of power...as i know that music is very dynamic...but what about music such as metal or dance/trance that have more drum and bass notes which will make the midbass driver to work more ?

  7. #6
    Mayor
    Location
    Jakarta, Bandung
    Posts
    3,641
    Power
    25 
    M-Store Point
    0
    Online
    4 Days 8 Hrs 14 Mins 7 Secs
    Gain/Sensitivity adjustment is made to match between HU's lineout and PowerAmp line in.
    Maximum gain (very sensitive) = minimum sensitivity value in Volt.
    Minimum gain (less sensitive) = maximum sensitivity in Volt.

    Let's take the 200W amplifier and 100W RMS speaker as the sample.
    Say the amplifier has a minimum of 150mV sensitivity/gain and max to 4V.
    And the HU line out is 2V max.

    If you set the sensitivity to 150mV (the minimum value, very sensitive, max gain), when you turn the volume on HU, the output will increase (up to 2V max). And because of your gain is set to 150mV that means the amp will reach it max 200W output very soon (maybe 1/8 of volume). On this case 1/8 volume will destroy your speaker cause 200W is too much for 100W speaker.

    But if you minimize the gain to 4V (maximum sensitivity in V, less sensitive, minimum gain), even when you turn the HU's volume to the max, the amplifier will not reach it's 200W output. If all are linear, than the amp will be only pushing 2V/4V x 200W = 100W to the speaker - This is safe.

    So, minimizing the gain until it match maximum HU volume = half of your 200W amp gain = speaker RMS is ok. TRUE.

    More gain <> more power to the amp. It just tells how sensitive it is to pick up signal in its line in and amplify it to the max. The max output of the amp will still be 200W.
    But if the sensitivity is set bigger than HU max out, your amp will never reach its 200W output.
    So less gain -> never maxout the amplifier.

    Yep, music is dynamic. It's called transient peak. This is where headroom plays.
    Say you're using 100W amp to feed 100W speaker, and the gain is not match (too sensitive).
    When the peak comes, your amplifier will send clipped signal at 2x100W square wave - potentially destroying your speaker (if there's no clip indicator and a relay to disconnect the speaker).
    The Beast - Sound Quality Audio Processor
    The Altair - HiFi Speaker

  8. #7
    Letnan Kolonel
    Posts
    5,190
    Power
    33 
    M-Store Point
    0
    Online
    2 Hrs 3 Mins 12 Secs
    wow ... ada yang bisa bantu terjemahin ???
    = AD MAJOREM DEI GLORIAM =

  9. #8
    Letnan Satu
    Posts
    1,939
    Power
    M-Store Point
    0
    Online
    8 Hrs 15 Mins 36 Secs
    ini forum lokal apa inggris ya?duh mesti pakai kamus ne..heuheuh

  10. #9
    Mayor
    Location
    Jakarta, Bandung
    Posts
    3,641
    Power
    25 
    M-Store Point
    0
    Online
    4 Days 8 Hrs 14 Mins 7 Secs
    TS nya tamu dari Malaysia
    The Beast - Sound Quality Audio Processor
    The Altair - HiFi Speaker

  11. #10
    Kopral Satu
    Posts
    89
    Power
    M-Store Point
    0
    Online
    N/A
    woww !! great explaination as always bro masswork !! THX :smt038

    sorry guys, saya emang nya dari malaysia...bisa naip indo sikit2...bisa paham indo jugak dikit. afraid if i naip in indo, u guys get confused LOL

 

 
Page 1 of 5 12345 LastLast
Venom 300x250 MBtech

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. WTS - Preamp Balance Line Driver (XLR) untuk Power Butler
    By alphabravo in forum Power Amplifier
    Replies: 13
    Last Post: 28th December 2011, 06:49
  2. JDM SIGN PLastik P,L,Old driver,New Driver
    By D21FT in forum Jual Beli Interior & Aksesoris Lainnya
    Replies: 225
    Last Post: 15th December 2009, 01:26
Back to top