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  1. http://www.worldcarfans.com/110021024505/n...er-suv-revealed
  2. http://motoring.asiaone.com/Motoring/News/...103-177461.html the design looks swee and aggresive on the drawing board
  3. Matt Black Crossover? Sticker or New Paint? How much>?
  4. as my rainbow csx265 crossover is faulty,looking to buy another 1 be it brand new or used,bros any idea where can i get it?
  5. I have a pre-amp already. Do I still need the above ?? BTW, what are the differences between crossover / bass expander & reconstruction processor ? Thanks.
  6. This may sound like a Chinese car bashing but it is not. To me it doesn
  7. Hi bros, have a question on the above. What's the diff ? Can I use capacitor instead of crossover for my tweeter? Thank you.
  8. Youtube has about almost anything you want. I point you to this: I've read about these crossovers at alt.rec.startrek long ago when there wasn't any WWW yet. They were imaginative and very entertaining to read. After seeing this Youtube, all I can say is OH MY GOD!..... Not in many yahrens has a flood of tears filled my eyes! Here is another one. I bet heavily on the Imperial forces. Star destroyers are not destroyers. They are more like floating mini Death Stars. Good luck Galactica. Here is another one below: Completely brings the geek out of me. Star Wars vs BSG vs Star Trek vs B5.
  9. Here's some more news from Fiat.........check out here: http://www.motorauthority.com/cars/fiat/fi...-new-crossover/
  10. Hummer look-a-like. 7 seater SUV. Special look. Like it or not?
  11. Hi Bros, Just wanna find out what are the crossover frequencies you guys use for 1. HPF on front component speakers (passive crossover) 2. HPF on rear coaxials 3. LPF on Subwoofer I want to try out different sets of combinations to hear the effects. Still learning how to tune my setup
  12. hi, anybody happen to have crossover lying around wanna let go ???
  13. Hi, Am at a lost. Did a search on the history posting but just bits and pieces. Still don't get it. Anybody can assist me on how to set my crossover setting for my Alpine 9815? I'm on passive set-up. Ice set up as follows: HU : Alpine 9815 / 60W x 4 AMP: Genesis Profile 2 / 75W x 2 SPK : Infinity 6000CS (Component Spk) / Impedance 4OHMS / Frequency response 53Hz-21kHz / Sensitivity (2.83V, 1m)= 92db / Crossover Freq = 3.5kHz Appreciate any feedback. Totally confused!! Cheers...
  14. I've managed to tweak my TA setting to bring the out the staging but I am at a loss at crossover issue. I dont exactly know which setting to select and afraid of risking to burn my speakers if select wrongly. I am running 2 way active and my P80 HU crossover offer these setting: Low LPF: 25Hz, 31.5Hz, 40Hz, 50Hz, 63Hz, 80Hz, 100Hz, 125Hz, 160Hz, 200Hz, 250Hz Slope: 36, 30, 24, 18, 12db/oct, Mid HPF: 25Hz, 31.5Hz, 40Hz, 50Hz, 63Hz, 80Hz, 100Hz, 125Hz, 160Hz, 200Hz, 250Hz Slope: 6, 12, 18, 24 db/oct Mid LPF: 1.25k, 1.6k, 2k, 2.5k, 3.15k, 4k, 5k, 6.3k, 8k, 10, 12.5k Slope: 6, 12, 18, 24 db/oct High HPF: 1.25k, 1.6k, 2k, 2.5k, 3k.15k, 4k, 5k, 6.3k, 8k, 10k, 12.5k Slope: 6, 12, 18, 24 db/oct Here's my system specs: Speaker Sensitivity: 91db Frequency Responce: 42-24 NOM/MAX: 150/300W Fs (Hz) : 51 4ch Amp 75 x 4 @ 4Ohm stereo Frequency Responce: 10-50KHz Apline active subwoofer SWD1600 Crossover: 60-160Hz Need some advise here to help me to set the correct crossover setting or tell me which is the safe setting to avoid burning of speakers. Thanks!!
  15. Any ICE gurus out there can advice me on this? My gain on the amp has to be turned down really low, if not there would be some hissing static like sound comming from the tweeter. I'm guessing it's the crossovers i'm using since my speakers and tweeters aren't of the same brand. Anyone has any spare crossovers i can borrow to "test" my theory? Or anyone knows any way other way to get rid of this sound? It's real irritating on songs that are vocal cause in the background, you can hear hissing... My HU volume now has to be real high because my gain is almost off..
  16. i'm trying to learn how to decipher the circuitry of my passive cross but it doesn't seem to follow a simple 1st or 2nd order cross. so i'm real confused. anyone can make head-tail out of this attached picture? http://f3.yahoofs.com/users/4296d66fz5a650...hQ3MuEBthG1cXBo maybe could first take a look at the woofer section of the circuit - which components are really running? they almost ALL seem to be influencing the woofer circuit. so many components - i have no blinking idea how to calculate its woofer low-pass frequency, especially since it also connects to the tweeter outputs! heeeelllllppppppp......mmmeeeeeeeeeee....... :~(
  17. in the higher end 2-way component speakers, what are the more frequently-used crossover points for these 2 way, between the typically 1 inch tweeter and 6.5 inch midbass? is it 3k? 4k? this question is also posed to those running active. what is commonly set amongst u guys for this crossover point?
  18. hey guys i am new at this... my speakers have this slope 12DB>?? what is the slope for or do??? i hear that you can tune with this it is???
  19. Some good writeup on cross over slopes ----------------------------------------- A crossover consists of two or more filters designed to split the desired frequency range into parts. Each part then being assigned a dedicated drive unit (speaker). A 2-way crossover has two filters: a high pass and a low pass, and is usually used to integrate a mid-bass and a tweeter. Each filter then has several characteristics, one of which is it's slope (or roll-off), measured in decibels per octave (dB/oct). An octave being a factor of 2 of the original frequency. Thus 1kHz has octaves at 500Hz and 2kHz. The rate of roll-off is always a factor of 6 (for ease of circuit design and calculation). The most popular types being 6dB/oct, 12dB/oct, and 24dB/oct. Further to the numerical rate of roll-off, filters are often asigned an 'order' number. Order numbers are again a factor of 6, thus a 1st order filter equates to 6dB/oct (1*6), 2nd order 12dB/oct (2*6), and 4th order 24dB/oct (4*6). The other important filter characteristic is the filter point (crossover point where necessary). The filter point is that chosen at the design stage and equates to the 'half-power point', or the frequency where output is -3dB (-3dB equating to a 50% reduction in power). *** This assumes the filter design uses -3dB, some designs are -6dB at the filter point ***. For example: a 1kHz high pass filter. In it's most basic sense everything above 1kHz passes, everything below is discarded. That's not particularly accurate. The frequencies below 1kHz are not discraded, rather they are attenuated according to the rate of roll-off of the filter. Assuming 6dB/oct: The output from the filter is -3dB at 1kHz, an octave later (500Hz) the output is -9dB (ie the output is already -3dB, and the filter reduces that by a further -6dB). Another octave lower (250Hz) and the output will be -15dB. If the filter were 2nd order, 12dB/oct, the output would be -15dB within the space of an octave, ie at 500Hz. -15dB equates to over 95% reduction in power. This should indicate the importance of high order filters, especially within high power systems, and especially with tweeters. With a 6dB/oct filter, low mid-bass frequencies will still be entering the tweeter. And even though the output is considerably reduced, if enough power is available, the percentage reduction may not be enough to stop tweeter damage. Just for reference: -3dB = 50% reduction, or a factor of 2 -6dB = 75% reduction, or a factor of 4 -12dB = 93.75% reduction, or a factor 16 -18dB = 98.4375% reduction, or a factor 64 -24dB = 99.609375% reduction, or a factor 256 NB: the factors work in a positive sense too, so that adding 3dB gain doubles the input. Whilst adding 18dB is 64 * the input, and the reason you have to be careful with 'boost' type controls!.
  20. just installed this preamp for $300 plus in my ride as my HU is a built in one so got no aux channel.After installing, i can now play my ipod through the preamp and through my speakers....so now very happy....definitely better than using the itrip Specs: Master volume control with up to 10 volts RMS of output Front/rear fader control Four band parametric equalizer with 18dB boost per Cut. Variable bandwidth for each band Low noise Bi-Fet op-amp design yields minimum distortion 30V bi-polar switching power supply Subwoofer output and level control Subwoofer frequencies adjustable 50Hz-250Hz AUX/CD input selector Universal half-Din chassis for ease of installation Gold-plated RCA input/output connectors 20dB headroom eliminateas signal overload 4 band parametric range: Sub 20-70Hz/ Low 150-400Hz/Mid 1.5-4KHz/HI 4-20KHz Subwoofer Crossover: 50-250Khz Boost/Cut: 18dB S/N Ratio: >120dB Ref 1V Input Frequency Response: 10Hz-15KHz, + / -1dB Stereo Separation: 90dB/1KHz Maximum Output Volage: 10V RMS THD: <0.005% Headroom: >20dB Input Impedance: >50k Ohm Output Impedance: <10K Ohm
  21. Just got this Alpine 9813 HU and is trying to get the correct crossover settings. Even bought the JVC sample CD to do some DIY tuning due to tight budget. 1) Hope some kind souls out there can advice on the crossover settings for Front - Rainbow Front components, SLX 230 series http://car.rainbow-audio.de/products/intro...n=2&pro=1&lin=9 Rear - Stock speakers Subwoofer - JBP Single Coil bass tube. 2) Also like to check that if my speakers are running from Amps which had built in crossovers, will it make it alot more complicated to set my HU's crossover settings or it'll take just either HU or Amp's crossover will take effect? 3) My Installer asked for SGD200 for tuning. Anyone care to share their opinion? Many thanks dudes.
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