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Alpine PXA-H800

Digital sound processor

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Our take on the Alpine PXA-H800

by Zak Billmeier
Alpine
Alpine Authorized Online Dealer Alpine PXA-H800 sound processor

Makes any system sound spectacular — even a factory system
Frustrated by the way your car audio system sounds? You're not alone. Even so-called "premium" factory systems often have serious limitations in the sound department. Alpine built the PXA-H800 digital sound processor for one purpose: to deliver pristine sound to aftermarket amps, speakers, and subs. It takes control over your sound before you send it to an amplifier, stripping away hard-coded factory settings and starting from scratch. You'll even find speaker-level inputs, which lets you hook up your factory stereo or another source that lacks preamp outputs.

If you can't replace your factory radio...
In many newer cars, the factory radio also controls critical functions like climate controls and safety systems. That makes for a convenient interface, but it can make it difficult or impossible to install a superior aftermarket receiver. But if you still crave pristine sound, you can keep your factory look and feel — and let the Alpine PXA-H800 handle the sound processing. (This processor works with aftermarket stereos, too.)

Audiophile-grade components are the key
The PXA-H800 features four Wolfson 24-bit digital-to-analog converters (DACs) — this is what turns the digital information from your iPod® or a CD into an analog signal your speakers can play. All systems have some sort of DAC, but the Wolfsons found in the PXA-H800 are normally only found in professional recording equipment — the same sort of equipment your favorite artist probably used to record your favorite song.

Advanced digital processing puts you front and center
The driver's seat has a built-in disadvantage in any audio system: it's not in the center. You have at least four, and more likely six or more speakers in your car. But you're sitting right next to one or two of them, so your music might sound like it's pulling to the left. The PXA-H800 adjusts the timing of all the speakers in the car so their sound arrives at your ears at the same time, effectively moving the soundstage to the center where it belongs. It's like sitting in the front row center at a concert.

Digital magic helps overcome car audio limitations
Alpine knows that a moving car creates somes challenges in the sound department, such as road noise and differing speaker configurations. To compensate for these and other situations, they've built some clever functionality into the PXA-H800, such as:

  • RoadEQ: Automatically applies frequency-level adjustments to cancel out road noise.
  • MediaXpander+: Helps digital files (like those on your iPod) sound better by compensating for frequencies compromised by the compression process.
  • 5.1-channel surround sound: Decodes the Dolby® Digital and DTS® Surround formats when you set up a mobile movie theater in your ride. The PX-H800 can also decode Dolby Pro Logic II recordings, so you can enjoy surround sound from a stereo movie audio track.
  • Bi-Phantom: Uses your front left and right speakers to create a virtual center channel, which enhances vocal quality in a 5:1 surround system.
  • Euphony: Creates natural surround sound from stereo audio recordings, so you can enjoy surround sound tunes.

Alpine RUX-C800

Optional RUX-C800 system controller

Control the PXA-H800 from your dash
Add the optional RUX-C800 in-dash controller, and you can tweak your sound on the fly. You can also change sources and view detailed info about your system. It looks a bit like an in-dash receiver and comes with an installation kit.

Hone your sound to razor-sharp perfection
Alpine gives you a bevy of ways to get exactly the sound you want. The easiest way is ImprintEQ, which uses an included microphone to optimize the signal for the acoustics in your car, then allows you to tweak the settings manually if you wish. If you'd rather take control from the start, you'll find some serious equalizers: 31 bands for each of the five channels, plus 10 bands for the subwoofer. You'll also find a 10-band parametric EQ for each of the five channels, plus a 5-band parametric EQ for the subwoofer. Connect the PXA-H800 to your laptop to get a nice graphical depiction of your audio settings, plus the ability to store different settings for later recall — handy if you plan to move the processor to another vehicle now and then.

Alpine PXA-H800 rear connections

Rear connections

Alpine PXA-H800 front connections

Front connections

Variety of connections
Connections include front, rear, center, and sub channels with both speaker-level and RCA inputs, plus two digital optical inputs. There are also two Ai-NET connections for hooking up Alpine gear, along with 8-channel preamp outputs for feeding a 4-volt signal to aftermarket amplifiers. The preamp outputs are configurable to accommodate a variety of audio setups, from bi-amped front speakers, to full surround sound.

Highlights:

  • audio processor for use with any receiver
  • delivers pristine sound to your aftermarket amps, speakers, and subs
  • IMPRINT sound technology adjusts receiver output to match vehicle acoustics
  • four 24-bit Wolfson digital-to-analog converters
Sound tuning:
  • ImprintEQ with three presets and customizable target curves
  • 31-band graphic EQ (front, rear, center) plus 10-band for subwoofer
  • 10-band parametric EQ (front, rear, center) plus 5-band for subwoofer
  • RoadEQ to help compensate for road noise
  • high-pass, low-pass, and bandpass crossovers
  • Bi-Phantom creates a virtual center channel
  • surround sound decoding, plus Dolby Pro Logic II decoding
  • 8-channel time correction
Connections:
  • 6-channel speaker-level and RCA inputs (front, rear, center, sub)
  • two digital optical inputs
  • navigation voice guidance input (RCA)
  • 8-channel high-power preamp outputs (4-volt, configurable)
Other info:
 

Hands-on research from the Crutchfield Labs (what are the Labs?)

Product Research
What's in the box?

Download owner's manual

  • System integration audio processor
  • Wiring harness
  • 18' Ai-NET extension cable
  • 16.5" USB cable (with a USB type-B connector on one end and a USB type-A connector on other end)
  • Six 9" Speaker-to-RCA cables
  • Microphone (with attached 19.5" cable terminated by a 3.5mm connector)
  • Visor clip
  • Adehsive tape
  • 2 Velcro fasteners
  • 4 Mounting brackets
  • 4 Hex-head self-tapping screws
  • 4 Machine screws
  • Setup Disc Software Installation Disc
  • Owner's Manual (En/Fr/Sp)
  • Installation Manual (En/Fr/Sp)
  • Supplementary Manual (En/Fr/Sp)
  • "Automatic Time Correction/ImprintEQ" note
  • Online Product Registration card

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features
Controls
Connections

Features

System Integration Audio Processor: The inherent sound quality inside a vehicle varies widely. Numerous factors; including media used, vehicle type, speakers, etc. contribute to this inconsistency. The Alpine PXA-H800 System Integration Audio Processor is able to compensate for many of these factors to optimize the sound automatically. The processor allows you to upgrade your vehicle's factory or aftermarket sound, in conjunction with an aftermarket amplifier, while leaving all of your factory or aftermarket equipment and controls intact. The Alpine PXA-H800 lets you keep the look and functionality of your vehicle's factory radio or your aftermarket head unit; including steering wheel controls, Bluetooth wireless technology, DVD video capability, navigation, iPod support, SiriusXM Satellite Radio, Auxiliary inputs, and more. The PXA-H800 also maintains control over the sound using your vehicle's factory or aftermarket radio volume control. The PXA-H800 provides all the audio processing functions necessary to enable your factory or aftermarket system to reach the highest levels of sound quality.

Note: The addition of an external aftermarket amplifier (sold separately) is required and an Alpine RUX-C800 wired remote controller (500RUXC800, sold separately) is recommended. You will also need a Windows PC.

Audiophile-Grade Components: A series of ultra-high performance audio components have been built into the PXA-H800 to achieve the heritage quality sound of Alpine.

  • A complete 6ch analog-to-digital converter, the CIRRUS CS5366, is ideal for audiophile sound quality. The ADC uses a differential input architecture, which provides excellent noise rejection.
  • To reproduce the sound source without degradation, two ultra-fast accurate 32-Bit floating-point SHARC DSP's are used for high-performance and rich audio feature applications.
  • The use of four Wolfson 24-Bit D/A converters (normally a component found only in professional recording systems) help to ensure superb detail and soundscape.

ImprintEQ: ImprintEQ is a hardware/software combination that can overcome the acoustic problems present in every vehicle interior. ImprintEQ obtains the optimum acoustic effect from each seat position, based on the automatically measured acoustic data of vehicle's cabin. The software will optimize the sound stage, tonal balance, and definition automatically. You can measure up to 6 listening positions (All, Front, Front Left, Front Right, Rear). Once the automatic acoustic measurement is complete, the ImprintEQ will provide 4 target curves to choose from.

  • Reference: Enjoy the rhythm and balance of music to the best acoustic effect, suitable for the vehicle interior.
  • Reference w/ Mid-Range Comp: Select this if the tweeter and midrange speaker are installed in the dashboard, and mid or high frequency range harshness is apparent.
  • Linear: A linear (flat) acoustic effect is actualized. This setting recreates the balanced sound of a studio listening room.
  • User: Allows you to adjust the target curve manual from -6 to +6 dB.

Time Correction: Digital Time Correction lets you achieve optimum sound staging by ensuring that the sounds from all speakers reach your ears at the same time. The time correction feature delays the audio signal to the speakers closer to the listener. This effectively creates a perception of increased distance for those speakers. Time Correction allows the listener to be placed at an equal distance from all speakers for optimum staging. Up to 8 channels can be automatically or manually corrected, from 0 to 20ms in 0.5ms steps.

RoadEQ: Even superior sound can be degraded by road, wind and air conditioner noise. RoadEQ takes the internal and external inputs and cancels out the noise to deliver optimal sound to your ears. It compares the original and recorded signals to create frequency-specific level adjustments to cancel the noise components. This powerful processor performs these operations at 48,000 times per second. The RoadEQ compensates for constantly changing noise, so always keep the included microphone connected. The mic should be installed on your sun-visor with the included clip.

MX (Media Xpander) Plus: MX (Media Xpander) Plus restores and enhances sound quality that is lost in the recording or transmission processes. This exclusive Alpine technology is especially good for making compressed digital audio files from iPod or other media players sound better. It is also effective for older recordings on CD, and improves the bass from factory-installed speakers. This helps to improve music clarity even in a cabin with loud road noise. There are various MX Plus settings to choose from based on your listening content.

  • Compressed 1-3: This corrects information lost in the compression process and reproduces a well-balanced sound close to the original. By supplementing mid- to high-frequency sound data, the sound is reproduced with more brightness and ambience.
  • Music 1-3: Lower register sounds (drums, bass, etc.) and vocals are emphasized for clean and clear output.
  • Cinema: Video dialog is reproduced more clearly, while action movies are reproduced with more powerful sound.
  • Action: Action movies are reproduced with more powerful sound.
  • Drama/Talk: The dialogue portion of a video is reproduced more clearly.

Graphic and Parametric EQ: The PXA-H800 provides either graphic or parametric equalization.

  • 31-Band Graphic EQ: The Graphic EQ divides the audio band into 31 individual bands. Each band is individually controlled to balance the sound and enhance detail. The Graphic EQ provides 31 bands (20-20kHz; 1/3 octave steps) for each of the five speaker channels, plus 10 bands (20-160Hz; 1/3 octave steps) for the subwoofer channel; with gain from -12 to +12dB.
  • 10-Band Parametric EQ: The Parametric EQ has fewer bands, but gives more control over where the band is located in the audio spectrum. You can also control how much overlap with adjacent frequencies (Q-factor). This provides you with a sound control feature of professional-level which allows you to adjust an extremely n arrow range in pin-point fashion without affecting the neighboring sound regions. You get 10 bands (20-20kHz; 1/6 octave steps) for each of the five speaker channels, plus five (20-200Hz; 1/6 octave steps) for the subwoofer channel; with detailed Q-settings (0.5/1.0/1.5/2.0/2.5/3.0/4.0/5.0) and gain from -12 to +12dB.

Digital Crossover: The PXA-H800 is equipped with a digital active crossover. The crossover limits the frequencies delivered to the outputs. Each channel is controlled independently. Thus, each speaker pair can be driven by the frequencies for which they have been optimally designed. The HPF (high pass filter) cuts the lower frequencies and allows the higher frequencies to pass. the LPF (low pass filter) cuts the higher frequencies and allows the lower frequencies to pass. The slope and level of each channel is also adjustable.

Digital Crossover Cutoff Frequency Adjustment Range Slope Level
HPF LPF
Front High 20Hz to 18kHz 22Hz to 20kHz 0 (Off), -6, -12, -8, -24, -30, -36 dB/octave -24 to 0 dB (in 0.5 dB steps)
1kHz to 18kHz (tweeter only) 1.1kHz to 20kHz (tweeter only)
Front Mid 20Hz to 18kHz 22Hz to 20kHz
Front Low 20Hz to 18kHz 22Hz to 20kHz
Rear 20Hz to 18kHz 22Hz to 20kHz
Center 20Hz to 18kHz 22Hz to 20kHz
Subwoofer 20Hz to 180Hz 22Hz to 200Hz

Phase Selector: You can adjust the phase (0° or 180°) of each speaker (Front High, Front Mid, Front Low, Rear, Center, Subwoofer).

Level Adjustment: You can independently adjust the level of each speaker channel (Front Left, Front Right, Center, Rear Left, Rear Right) from -10 to +10 dB. You can also adjust the PXA-H800's subwoofer output from 0 to 15dB in order to increase your system bass output without increasing the overall volume.

Surround Sound: The Alpine PXA-H800 System Integration Audio Processor supports up to 5.1-channel surround sound from multi-channel and 2-channel sources.

  • Dolby Digital/DTS: Enjoy true 5.1-channel surround sound just like your home cinema system. You can hear multi-channel sound from movie and music sources in the Dolby Digital and DTS Digital Surround formats. With Dolby Digital, the dynamic range is compressed so that powerful sound can be achieved at regular volume levels. This compression can be cancelled to achieve an energetic sound with even great power, like the sound in a movie theater. This can be set to Standard or Maximum.
  • Dolby Pro Logic II: The PXA-H800 also provides Dolby Pro Logic II decoding, so you can even enjoy stereo recordings in surround sound. You can choose between a Music or Movie mode. Music mode allows you to adjust the center width which provides the optimum vocal localization by adjusting the center channel position in between the center speaker and the L/R speakers.
  • Euphony: Euphony makes it possible to enjoy 5.1-channel sound from 2-channel sources. It creates natural surround sound from CD or iPod with wider soundscapes and harmonics. It especially enhances vocal and instrumental quality, for a superior sound field and no listener fatigue.
Note: Even if you don't have a center speaker, you can still enjoy 5.1-channel sound. Alpine has included a Bi-Phantom function, which uses the front left and right channels to create a phantom center channel, enhancing vocal quality.

Rear Mix: This function mixes the front channel audio signal with the audio signal output from the rear speakers, improving the sound in the vehicle's rear seat. This is used in a system where there is no subwoofer and rear speakers can product lower frequency sounds than the front speakers. The Rear Mix can be set to -6, -3, 0, +3, or +6 dB.

Center Bass Split: Turning on this function sends the center channel low frequencies equally to the front left and right speakers. this enhances the overall sound when using a small center speaker. This is used when the center speaker has a small diameter and cannot produce low frequency sounds. You can set the Center Bass Split function to 200, 225, 250, 280, 315, 350, 400, 450, or 500Hz.

Speaker System Output: You must select your system's Speaker Configuration and Speaker Settings before running the ImprintEQ auto correction software.

  • Speaker Configuration: Select what type of speaker configuration you have in your vehicle.
    • 4.2ch (System 1): 2-way front speaker + rear speakers + subwoofer
    • 2.2ch (System 2): 3-way front speakers + subwoofer
    • 4.0ch (System 3): 3-way front speakers + rear speakers
    • 5.1ch (System 4): 2-way front speakers + center speaker + rear speakers + subwoofer
  • Speaker Settings: Select what type of speakers you have in your vehicle.
    • Front High: full-range, tweeter, or off
    • Front Mid: full-range
    • Front Low: full-range or off
    • Rear: full-range or off
    • Center: full-range or off
    • Subwoofer (1/2): on/off
    • Subwoofer Output: stereo/mono

Sound Manager Software: Use the supplied Software Installation Disc (ver.1.1) to install the Sound Manager Software onto your Windows laptop. This software is compatible with Windows XP, Vista, and 7 (32-bit editions only). Once you have downloaded the Sound Manager Software onto your laptop, you can then connect the PXA-H800 to your laptop with the supplied USB cable in your vehicle. An easy-to-use GUI will appear on your computer's monitor that guides you through the automatic measurement process and lets you make detailed audio settings. You can store six different tuning presets on your laptop for later selection or for use to tune different vehicles.

External Microphone: The included external microphone must be placed at ear level inside your vehicle during the automatic measurement process, (a camera tripod is useful for this purpose). The direction of the microphone will not affect the measurement. During the automatic measurement process, your vehicle should be parked in a quiet location with the doors, windows, and sunroof closed; turn off the engine, heater, and AC. The microphone is permanently installed on your vehicle's sun-visor for the RoadEQ function.

Controls

Optional Remote Control: The Alpine RUX-C800 wired remote controller (500RUXC800, sold separately) can be used to program and control the Alpine PXA-H800 System Integration Audio Processor. The Alpine RUX-C800 provides a convenient way to adjust the PXA-H800's settings from your vehicle's driver seat. The remote provides full command of the PXA-H800's settings & functions. The RUX-C800 is equipped with a 3-way rotary knob and six push-button controls that let you adjust the Alpine PXA-H800's settings, as well as switch sources, adjust volume, and mute playback. The Alpine RUX-C800 in-dash controller features a BioLite display that provides detailed information regarding audio functions and settings. The BioLite display takes advantage of biochemical luminescence technology to deliver maximum visibility in daylight and provides a wide viewing angle. You can adjust the unit's button illumination between blue and red to match your vehicle's interior lighting. The RUX-C800 comes with a flush-mount bracket to custom install the remote controller in your vehicle's dash. The RUX-C800 also comes with two-side tape to simply adhere the wired remote controller to your dash.

Connections

6ch Audio Inputs (Aux Input): With six low-level (RCA) inputs, you can connect six channels (Front, Rear, Center, Sub) of sound from an aftermarket head unit which features preamp outputs. You can also choose to connect additional audio source devices (based on menu settings). With six speaker-to-RCA adapters, you can also connect six channels of sound from almost any factory or aftermarket head unit that does not have preamp outputs. There's no need for separate line output converters. The PX-AH800's Aux Input offers several settings.

  • Aux Input Configuration: You can setup the unit's 6ch audio inputs to accept input from a single audio source, two audio sources, or three audio sources.
    • 5.1ch Input: Aux 1 (Front Left/Right, Rear Left/Right, Center, Subwoofer); this is the setting normally used to connect an aftermarket or factory head unit
    • 4ch + 2ch Input: Aux 1 (Front Left/Right, Rear Left/Right), Aux 2 (Left, Right)
    • 2ch x 3 Input: Aux 1 (Left, Right), Aux 2 (Left, Right), Aux 3 (Left, Right)
  • Aux Input Level: You can adjust the unit's Aux input level to prevent distortion.
    • High: use this setting when the volume level of the external input is too high
    • Low: use this setting when the volume level of the external input is too low
  • Aux Volume Level: You can adjust the volume level of the PX-AH800's Auxiliary Input (6ch) from -10 to +10 dB.
Note: If a separate navigation system is connected, its voice guidance will be mixed with the system and output from the front speakers. You can adjust the navigation guidance volume from -10 to +10 dB.

4V/8ch Audio Outputs: A 4V/8ch preamp signal feeds the audio from the PX-AH800 to your aftermarket amplifiers and speakers, allowing a substantial sound quality upgrade. The PXA-H800 has the ability to operate a full-range, 2-way, or 3-way front speaker output system configuration, with rear speakers and sub.

2 Digital Inputs: The Alpine PXA-H800 features two optical (toslink) digital inputs for connection of an external automobile-grade Blu-ray/DVD player.

2 Ai-NET Connections: The PXA-H800 is fitted with two Ai-NET ports for connection of an Alpine head unit or changer which also features an Ai-NET connector.

Optional Auxiliary Input: The KCA-121B (500KCA121B, sold separately) allows you to adapt the unit's Ai-NET port to a stereo RCA (Aux) input for connection of an additional non Ai-NET device.

 
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Alpine PXA-H800 Reviews

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5 out of 5

Alpine PXA-H800

Written By CapitalE68, North New Jersey on Sunday, July 14, 2013
Crutchfield Customer Review (What's this?)
 
I have been buying car stereo equipment from Crutchfield since the 80's and have been happy with my equipment, but felt I never fully achieved a truly high-end sound in my cars. I had good HU's , top of the line speakers and amps, the system was loud but the sound quality was always lacking , in my opinion. some music sounded great but lacked the low end bass punch, or the bass was good and the high end was harsh. I have mainly bought Alpine Head Units because they always had the best sound from the cassette deck and CD days, but today they are still a good choice for head unit mine is currently 13 yrs old and still no problems. I started to look into a graphic or parametric eq and using an RTA to really make a difference. When I seen Alpine had the Imprint technology add on I started to wonder if I can add to my system, the only unit I could add was the PXA-H800, it was not difficult to add to my system, I just installed on the flop side of my amplifier. After tuning my system using the processor and an RTA I can only say the results are amazing, I can finally say I have achieved a truly high-end sound in my car I am very happy with the final result. I still tweak my system tuning every couple of months and I can save up to six preset "curves" and go back to previous tuning anytime to hear the difference. I highly recommend anyone trying to achieve high quality sound in the car use an electronic EQ. I also tried the automatic EQ imprint , & results were very good
Pros:
Works with both Alpine Head Unit and any brand of Head Unit. Computer Software control is very flexible with multiple crossover points, separate R or L speaker EQ settings. Both parametric, and Graphic EQ's. Time correction, Autotune with imprint, Optical inputs. always worked fine, I have been using for six months with no problems. can achieve high quality sound in the car
Cons:
Not many, just that the software only uses 32-bit windows OS, but I heard a 64-bit is coming soon.
3 out of 3 people found this helpful
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5 out of 5

Alpine PXA-H800

Written By Alpine Processor, Birmingham Alabama on Wednesday, June 19, 2013
Crutchfield Customer Review (What's this?)
 
The Alpine PXAH800 Processor is an amazing hookup! I installed this in a 2013 Nissan Altima, with a JL W6 sub, Alpine PDX V9 amp and Infinity Kappa Speakers. Very rich sound, with the pxa controller I can have immediate access to all sound settings to transform the car into a power house without losing my factory stereo. The only Hiccup I ran into was that the PXA software wouldn't run on a 64 bit PC , I wasn't told this before hand and it took several twitter posts to get a response from Alpine, but there is now an update so that a 64 bit PC will work! The amp is rated at 100x4 and 500x1. When the amp arrived its birth sheet showed a wattage of 133x4 and 566x1. I'm very pleased with Alpine Products and crutchfields tech support. I originally got 2 focal 10s and upon hearing the JL, I decided to stick with it and Crutchfield was very good about taking the focal a back. I would defiantly buy from crutchfield again. Next item on list is a new car battery to fix the headlights from dimming.
Pros:
Excellent sound, easy hookup, easy to conceal as well
Cons:
Biggest Con was the software issue I incurred. Had I known that before hand I probably would've waited but all works good now!
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5 out of 5

Great product

Written By BT3, NOLA on Monday, July 16, 2012
Crutchfield Customer Review (What's this?)
 
Great product, Easy to install but difficult to tweak. Needs a better manual and instruction guide. I have spent numerous hours adjusting it using both RUX C800 and laptop and I have finally gotten to a point where the sound is awesome. Haven't mastered the IMPRINT function yet but the time correction and DSP aspect is amazing. I was a little hesitant to drop $900 between the HXA800 and controller but it was worth it. Looking back it is actually many products rolled into one. It is a LOC/Factory integration unit (Which I am using it as), a 3 way crossover, and a graphic/parametric EQ along with a DSP. I am running a stock headunit and didn't want to change due to loss of steering wheel control and theft issues, I initially tried a Audiocontrol L6 and then switched to a JL audio cleansweep but was unimpressed with the "flatness" of the sound and the inability to tweak it. The PXA H800 changed all of that and I can say I am satisfied with my purchase and only wish that the user manual was more informative.
Pros:
Versatility Multiple products in one chassis Ability to tweak with RUXC800 Tuning options Supurb sound quality
Cons:
Need for external controller Lack of informative user manual
4 out of 5 people found this helpful
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4 out of 5

Please Read!!!

Written By EtaZeta, Madisonville, LA on Sunday, July 08, 2012
Crutchfield Customer Review (What's this?)
 
First off this is a really nice piece, however... I was looking for a DSP that would do all I wanted without any external controllers. Spoke with Crutchfield sales and was told in fact this piece would work. I could integrate this into my 2012 F150, retain stock Nav head unit, and rock on. Wrong. The manual states that without a specific Alpine HU, the RUX controller ($$$) is required. So due to July 4th holiday I had no audio for three days and had to pay to overnight the controller - not cool.

Issue two. Alpine claims this is THE unit for OEM integration. Also somewhat wrong. My factory system outputs front high, front low, and sub signals. These need to be summed into one full range signal. I had an Audiocontrol LCQ-1, summed them fine. Then I had a JL Cleansweep, summed them fine, this however will not sum that type of signal. I had to get a summing device (went with JL CL-SSI) to sum my signal, THEN input into the PXA-H800.

Now, all that said and done, it's a fine unit. I do wish Crutchfield had spent more time understanding this unit as several techs sort of scratched their heads at my issues. I am tweaking and tuning and hope this is the DSP for me. Four stars, five had I known the issues I'd be faced with ahead of time.
Pros:
Good SQ, tons of tuning options.
Cons:
No summing for all OEM systems, extra $$$ controller required.
7 out of 8 people found this helpful
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5 out of 5

Ammazing

Written By Wired, Alb, NM on Tuesday, May 29, 2012
 
I am still working on the adjustments but it sounds better than the PXA-H100 by a long shot. I have had this in process since talking to the alpine rep about the PXA-H900 not working with my head unit the way I wanted. Apparently it will only work with the F1 heads properly. I had the PXA-H700 previously and it doesn't hold a candle to the H800. I also was able to play with the H900 and sonically I think it is better than the H900. I love the way the adjustments can be made with the laptop. very well thought out. The only thing that would make this processor any better would be to have more outputs like active center channel and active rear.

All things said it is amazing.
2 out of 3 people found this helpful
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5 out of 5

PXA H800 & Cpntroller

Written By Tunner, IL Chicago on Friday, May 11, 2012
 
I came from JBL MS8 to this, I know there will be other units that you could do tuning of your SQ sound system. I was also considering BitOne unit as well. Well after doing some resourch, i decided to give a shot, this unit is great, I love that thing, I'm using Kenwood DNX9990HD, so I had no choice but to buy the controller.

There is so many settings to tune your system to how you like it, 2 way 3 way, 5.1 and soon, you get the idea. I knew that by getting this unit, i will have to have XP32 bit machine to do tuning over laptop, well I decided to give a shot to windows 7 32bit version and it worked just fine. I'm sure Alpine will be making new updated version of the software soon.
Pros:
Many possibilities of tuning, great front stage setup, nice and looking controller, small and compact easy to hide.
Cons:
Really nice unit, i have no reasons to give any negative feed backs, other than I had to wait over 5 month's when i put my order in!
2 out of 4 people found this helpful
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4 out of 5

Great!

Written By Dominick, Toms River, NJ on Wednesday, April 25, 2012
 
I replaced a JBL MS-8 with this unit. The sound quality is significantly better. Crisper highs and much punchier mid-bass. Soundstage is much better. The tuning ability is incredible, and the sound manager software seems to provide endless tuning possibilities. Would be five stars instead of four, but the software needs to be rewritten to work on a 64-bit machine (see cons below).
Pros:
Sound manager software is awesome. Tuning features are endless.
Cons:
I though I could just buy the PXA-H800 and use the laptop to set it up. Not so. YouMUST buy either the RUX-800 or have an Alpine head unit or the PXA-H800 will not turn on. I almost returned it because I thought it was broken, until I actually read through the manual and saw the fine print. Installing the sofyware on a 64-bit windows system must be done through XP Mode. If you don't have windows professional, it won't work. Could be tricky to install for novice PC users.
23 out of 23 people found this helpful
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