What loss do I have between 20Hz & 38Hz?... Please
|
New member Username: AoooPost Number: 3 Registered: Sep-05 | Will the loss be actually heard or is it more in terms of SPL? Will a Subwoofer starting at 20Hz necessarily sound better than one that starts in 38Hz (both of the same class) Will I not get a deep bass with the 38Hz Subwoofer? I am looking for a high sound quality... in general does it necessarily mean that a 38Hz Sub woofer will not deliver good bass and will not complement to the sq?? I will be very thankful for any help... Cheers Gal |
|
Gold Member Username: CarguyPost Number: 4425 Registered: Nov-04 | Gal what are you exactly asking? Is it the frequency or ported box? 20Hz is the lowest frequency human ears can hear. 38Hz is a good bass, but depending on the type of music you listen to, it can either be adequate or insufficient. For example, your HU's frequency is usually from 40Hz to 15KHz. Most rap songs (I wouldn't call it a song) plays around 40Hz - 60Hz. Classical can range from 16Hz - 20KHz. In general, you will be losing out with 38Hz sub. 30Hz is acceptable, 25Hz would be ideal, and 20Hz is optimal for SQ. |
|
New member Username: AoooPost Number: 4 Registered: Sep-05 | Thanks Isaac Yes I was asking about the frequency... I listen to Rock, soft Rock, Classic Rock..... A lot of Pink Floyd  SO I guess going for the 38HZ sub would not be recommended? |
|
Gold Member Username: CarguyPost Number: 4428 Registered: Nov-04 | Pink Floyd does have some songs that hit below 38Hz so yea, not a good idea. |
|
New member Username: AoooPost Number: 7 Registered: Sep-05 | This "loss" will it actually be a loss in sound, detail, like a specific beat or sound that just won't be there? Or just a loss in an extension (complimentary) to a sound that is there?? Thanks for all the help, really appreciate it. |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 10552 Registered: Dec-03 | with Floyd you'll lose a lot, missing below 38Hz. Especially with albums like DSotM and WYWH. 28-34Hz is a good spot for tuning a ported box, since it'll roll off to 20Hz and still give good response. Sealed, with cabin gain gives a flat response to below 20Hz as well. Forget bandpass enclosures though. "in general does it necessarily mean that a 38Hz Sub woofer will not deliver good bass and will not complement to the sq??" what do you mean by a 38Hz sub? The Fs of the driver or the tuned port frequency of an enclosure design? |
|
Bronze Member Username: AoooPost Number: 12 Registered: Sep-05 | I mean a sub with a frequency response between 38Hz - 500Hz. Can a ported box change the reality... can it be tuned to response below the 38Hz? By missing a lot you meen missing actuall music? This specific sub comes in a sealed box. ( can I take this opertunity to ask if you are familiar with a car audio brand - Mac Audio?)http://www.mac-audio.de/index_en.asp |
|
Bronze Member Username: AoooPost Number: 15 Registered: Sep-05 | GlassWolf are you here?? Anyone else ... Still about the sub frequncies |
|
Bronze Member Username: AoooPost Number: 20 Registered: Sep-05 | I am very thankfull for your help GlassWolf... Please if you could check out my last question Cheers man |
|
Bronze Member Username: AoooPost Number: 21 Registered: Sep-05 | Anybody? |
|
Gold Member Username: CarguyPost Number: 4445 Registered: Nov-04 | Tuning a port below the sub's capability will cause execessive movement and bottoming out without producing much sound. Think of it as a female trying to sing low notes or a male singing high notes. Althought there are some g@y as in happy ones that reach very high (Michael Jackson). |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 10566 Registered: Dec-03 | I'm here once every day or two at the moemnt but still here.. just be patient. if its response only goes to 38Hz, it's not a subwoofer. what is the make and model o fthis driver? got a link to it? |
|
New member Username: Rob_pregCampbell, Ohio United states Post Number: 2 Registered: Sep-05 | doesnt't mtx 9500 only go to like 41 Hz |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 10571 Registered: Dec-03 | are you looking at an anechoic response graph? free-air response? |
|
New member Username: Rob_pregRoyal oak, Michigan United states Post Number: 3 Registered: Sep-05 | i was just going off of MTX's websites ratings. They have for a T9510-44 Frequency Response, 41-150 Hz. Thats all i was trying to say. Sorry for sounding stupid, which i probably am. |
|
Bronze Member Username: AoooPost Number: 25 Registered: Sep-05 | Thanks Guys, It's a 10"JBL Subwoofer.(SC series) the 12" has the same response They both have a frequency response of Frequency Response between 38Hz - 500Hz. So your verdict as I understand.... It's not a proper subwoofer?? What do you say regarding the last post pointing out that the MTX T9510-44 Frequency Response 41-150 Hz? |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 10584 Registered: Dec-03 | those stated responses are free air anechoic responses. put the subs in aa box in a car and the response range changes drastically. don't pay attention to numbers so much. they can mislead you |
|
New member Username: LanzarchampBakersfield, California United States Post Number: 1 Registered: Sep-05 | does anyone know of a place or site that sells 1" thick mdf sub boxes, my subs just blew up my box and it was 3/4 all the way around. |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 10586 Registered: Dec-03 | need to build a better box.. use 3/4" MDF, double it in front (front baffle) and reinforce the box internally to stiffen it. |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 10587 Registered: Dec-03 | use liquid nails as an adhesive as well, and use plenty of it. |
|
New member Username: LanzarchampBakersfield, California United States Post Number: 2 Registered: Sep-05 | my old box was internally reinforced but i haven't tried doubleing the front, where can i buy a box like that thanks glasswolf |
|
Bronze Member Username: AoooPost Number: 28 Registered: Sep-05 | As far as I understood the frequency response of a speaker and the free air anechoic frequency response are 2 different things... are they not? If a Driver is stated to have a freq response between 38Hz - 500Hz it means that it cant/wont play sounds with a wavelength under 38Hz or over 500Hz... Is this the case? |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 10597 Registered: Dec-03 | first, it's a sub. it shouldn't be playing anything over about 80Hz anyway. other than that, the box you put the speaker in will determine a lot of how it responds. Cabin gain also makes a significant difference to how low the speaker will go within 3dB of flat. as for that box, you'll need to have it built for you. |
|
Bronze Member Username: AoooPost Number: 32 Registered: Sep-05 | First of all if I haven't said it enough then thank you very very much for all the help. The thing is that this same driver also comes with an original sealed box option, or an original "bazooka" round box option, and the specs stay exactly the same: freq response of 38Hz - 500Hz. Shouldn't there be any difference? Generally the range below the 40Hz or so, is it important for pure SQ, or mainly to achieve SPL? |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 10623 Registered: Dec-03 | if the box was ported I could see why it'd cut off at 38Hz.. it'd be tuned to about 40-45Hz and roll off below that. if it's sealed, rolls off at about 40Hz, and comes in a box alraedy.. it's just a cheap, low end sub. look for something better would be my advice. 40-45Hz is that "boomy" area of bass that's really brought out with a lot of older rap music. that deep, low bass you feel in your chest is below that range.. in the 20-40Hz range. trust me when I say you want that range, and you want plenty of it. |
|
Bronze Member Username: AoooPost Number: 47 Registered: Sep-05 | Thanks GlassWolf for the advice, maybe if you see the sub you will have a different opinion?(I was actually told that it is ok and that I can expect good sq) It'll be great if you could check it out This is a link for the sub+box: http://www.jbl.com/car/products/product_detail.aspx?prod=CS1000B/230&CheckProduc t=Y And this is just the driver: http://www.jbl.com/car/products/product_detail.aspx?prod=CS10/230&CheckProduct=Y Thanks again for the help I appreciate it. |
|
Bronze Member Username: AoooPost Number: 54 Registered: Sep-05 | Anything Glasswolf? |
|
Gold Member Username: Basshead86Ocala, FL USA Post Number: 1858 Registered: Aug-05 | he only gets on once or maybe twice a day. very busy guy. patience young grasshoppa. lol |
|
Platinum Member Username: GlasswolfWisteria, Lane USA Post Number: 10638 Registered: Dec-03 | not a big fan of JBL's subs really. mediocre at best. |
Main Forums
Today's Posts- Home Audio Forum
- Home Video Forum
- Home Theater Forum
- Car Audio Forum
- Accessories Forum
- All Forum Topics