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  1. Quick bridged phase/polarity question.

    Technical & Advanced Car Audio Discussion
    I’ve been trying to become a little more educated on phase shifts and the effect crossovers have on phase, and to take a break from all the reading wanted to try playing with phase on my current amp to see if I notice a change. I saw someone said that most bridgeable amps are actually marked...
  2. Speaker Phase in 2005 Kia Sportage.

    General Car Audio Discussion
    I've just started to upgrade my factory door speakers to new ones, and while I have my front two door speakers wired and installed, I've learned that these two along with the factory rear speakers are ALL out of phase... Is this normal for a Kia? Because I wired my new speakers with positive to...
  3. 2 x 2 ohm amplifiers vs 1 x 1ohm amp for 2 subs

    System Design: Help Me Choose Equipment For My Car
    I keep going back and forth for sound quality and I have a long list for both options. Im trying to find out if it is best to run 2 separate amplifiers ( 1 per subwoffer) at 2 ohms each or should I simply run a single amplifier designed for 1 ohm operation. I will be using a dsp so amplifier...
  4. Let's measure the output of a DSP! Crossovers, EQ, Phase etc.

    Technical & Advanced Car Audio Discussion
    I thought I'd start a thread about crossovers, EQ and other filters affect the output and how it interact with the acoustic output of the system. I mostly use MiniDSP nowadays, they are cheap and offers great versatility. For this setup I've simply put the unit between the I/O of my soundcard...
  5. Phase Evolution ALIANTE 12 NEO Subwoofer

    Technical Data Load capacity RMS/ max.: 450W/900W Impedance (nominal): 2 x 2 ohm Frequency range: 18 - 300 Hz Response: 87.9dB / w / m Search Phase Evolution ALIANTE 12 NEO Subwoofer
  6. WTB: PPI PSC 221 Phase Shifter

    Car Audio Classifieds
    Product Brand & Model: PPI PSC 221 Phase Shifter Or Any other good quality phase shifter Condition of all items: TBD Total Price: : TBD Shipping Terms: : Any Pictures: - Unless you are a Upgraded member, or your last 10 iTrader feedbacks are positive, you must post a picture of the...
  7. FS: RF 3Sixty.3 NIB DSP Processor - Rockford Fosgate Goodness

    Car Audio Classifieds
    This is a BNIB Rockford Fosgate 3Sixty.3 that I've kept as a backup but no longer need. It's still wrapped in the original plastic and has everything in the box that it came with: Bluetooth Module, Power wiring harness, Remote with cable, high-level input harness, USB Cable, CD, Manuals, etc...
  8. Normal vs Reverse Phase Queery

    Technical & Advanced Car Audio Discussion
    So focal utopia 4 way active, no. 7 + 21wx sub off a pioneer p99rs. All set up, been going for a few months, my install has the mid and tweet above dash near A pillars, and mid/bass in bottom of doors with sub in boot. It all sounds great, got it TA'd pretty much right in front of my face...
  9. Shallow mount 12" sub for IB/freeair

    System Design: Help Me Choose Equipment For My Car
    I am strongly considering purchasing a used Cadillac CTS-V. I've seen se7en's install and plan to borrow his choice of door speaker, Dynaudio mw180. Not sure if I'll go tweeterless with some HATs or buy a midrange and use my Scanspeak tweeters. That's really not up for discussion at this point...
  10. Where's the bass???

    Technical & Advanced Car Audio Discussion
    Fellow car audio enthusiasts....I recently upgraded out of the stock Bose system in my Nissan Maxima and replaced the stock speakers up front with JL Audio C5 series 6.5" coaxials, and replaced the stock rear speakers with JL Audio C2 coaxials. I do have a sub, but my question here is about the...
  11. FIR crossovers? Comments?

    Technical & Advanced Car Audio Discussion
    I searched the forum for FIR crossovers but didn't get much return. Does anybody on here run FIR crossovers? Any comments about them? Thoughts about helping with phase issues or imaging? Some background: I've been running CDT HD-52 midrange (5.25") and DRT-26 tweet in a CDT "braxial"...
  12. time alignment, still confused

    General Car Audio Discussion
    OK I've read all I can find on this, and think I understand the basic principle of time alignment. Basically it adjusts the delay times from each speaker so that sounds meet simultaneously at the listener, I get that. But I'm a nerdy noobie, and I always make shit complicated so here goes...
  13. Take 5 minute to play with your phase

    General Car Audio Discussion
    I've always been the type of person to do things my own way, but yet follow "directions" to the letter. Being this way, I have always used a small battery to check that a speaker's -/+ are marked correctly, then hook everything up in phase. That's it, since it's hooked up correctly, then...
  14. Precision time alignment using only noise tracks and your ears

    How-To Articles Provided by our members
    Introduction First of all, I’m not a professional, just someone who used to be obsessive about mobile audio. So, please forgive any misuse of terms or definitions. Digital time alignment (abbreviated as TA) was the driving force behind my first active system. Based on recommendations by this...