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new amp rack under construction |
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another view of amp rack under construction |
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rack primed ready for painting |
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sub box with speaker crossovers being wired |
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new trunk set up with DVD changer on back wall with Scosche Distribution Blocks |
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another side view of rack. Sub amp closest to you in picture, with cenetr channel amp in the middle below 5.1 surround processor, and front/rear amp |
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VRX925 retracted into dash with 2nd display |
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Picture of center channel speaker in console |
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New
Source Unit, DVD Changer and Sirius Satellite Radio Receiver
VRX925VD in dash AM/FM/CD/DVD/MP3/CD/DVD Changer Controller w/ 7" Wide Screen
Color LCD Display with Touch Panel Controls
Fully Motorized 7" Wide
Screen Color LCD Display
Touch Screen Control
Single Play DVD Mechanism plays: DVD Video, CD Audio, CD Video, MP3
Magi-Tune Tuner with 18FM/6AM Presets
Sirius Satellite Radio Ready
CeNet Control of:
Optional DVH920 Dolby Digital/dts 5.1 Processor, Optional TV Tuner, Optional
Sirius Satellite Radio Receiver, Optional DVD Changer and 6 disc Audio CD
changer, Multi-changer control, CD Text, CD Titling (Audio Changer Only),
Station Titling
Plays MP3 CD-R discs
3 Band Parametric EQ (Beat EQ)
4 Volt 6-Channel RCA Line Level Output
24 Bit DAC's
Fiber Optic Output for Use w/DVH920 5.1 Dolby Digital/dts Decoder/Processor
200W (50W x 4ch)
IR Remote Control
General
Specifications:
Power Requirement: 14.4 Volts DC (10.8- 15.6 allowable)
Current Consumption: 4.0A
Weight: 4.1 lbs (2.0kg)
Dimensions Main Unit (WxHxD): 7 x 1 15/16 x 6 1/2
Dimensions Tuner box (WxHxD): 7 x 1 1/2 x 8 1/4
FM Tuner Specifications:
Frequency Range: 87.9MHz-107.9MHZ
Useable Sensitivity: 9dBf
50dB Quieting: 15dBf
Alternate Channel Selectivity: 70dBf
Stereo Separation: 35dB
Frequency Response: 30Hz-15kHz
DVD/CD Player
Frequency Response: 4Hz-22kHz (48kHz)
4Hz-44kHz (96kHz)
4Hz-20kHz (CD)
Signal to Noise Ratio: 100dB (1kHz)
Dynamic Range: 100dB (1kHz)
Distortion: 0.02%
Audio Amplifier Specifications
Rated Power Output: 18W x 4 (20Hz-20kHz, 1%, 4 ohms)
Maximum Power Output: 200 Watts (50W x 4)
Speaker Impedance: 4 ohms (4-8 ohms)
Input/Output Specifications
Audio Input: 130 +/- 60mVrms (10k
ohm)
Video Input: 1.0 +/- 0.2 Vpp (75 ohm)
Video Output: 1.0 +/- 0.2 Vpp (75 ohm)
LCD Screen Specifications
Screen Size: 7 Wide
Pixels: 336,950
Resolution: 1440 x 234
5.1
Surround Sound Processor
When you go to
the movies, the biggest part of the theater experience is the sound. Most
theaters today use either Dolby Digital or DTS 5,1 surround sound systems for
the "you are there" experience.
5.1 Surround
Sound is comprised of a left front, center, right front, right rear, left rear
and subwoofer channels. Each delivers a separate track, the center being used
for dialog and to anchor the voices to the screen, the front and rear channels
are used for music and sound effects, and the subwoofer delivers the "grunt" of
low frequency sounds such as explosions.
Now, 5.1
surround sound is available for car audio state of the art systems. Decoders are
available that will give you the same theater surround sound experience in your
car. Lets face it: you already have the front and surround speakers in your car
already, and most of you have a subwoofer, so all you need is a center channel
speaker and a processor. Clarion has one available now:
DVH920 Dolby
Digital/Dolby Pro Logic II and DTS 5.1 Surround Sound Decoder
The DVH920 hide away Dolby
Digital/DTS/Dolby Pro Logic II processor provides a true theater surround sound
experience. This unit can be directly controlled through the CeNet bus from the
VRX925VD in dash DVD player with motorized 7 screen. It can also be controlled
by the optional DVC920 control panel, for use with other Clarion source units
and the VCZ625 6 disc DVD/CD changer.
The DVH920 has built-in selectable crossovers for the front, center, rear and
subwoofer channels at 50/80/120Hz. To aid in setting up the proper speaker
levels, all channel gains are individually adjustable and use pink noise for
proper level setting. Along with the adjustable gain settings, the center and
subwoofer channels volume are also independently adjustable to allow for varying
source material.
A built-in 1/3 octave parametric equalizer is included, with three independent
bands of adjustment for the front, center, and rear speakers. There are
adjustments for frequency, gain and Q (how the slope of the adjusted frequency
is affected). Either pink noise or audio material can be input to set the EQ.
Also included are seven different DSP surround settings (such as Club, Theater,
etc.) to help to create a bigger sound stage, as well as a digital time
alignment option to set speaker delays to compensate for sonic discrepancies
caused by the vehicles interior.
The DVH920 also includes Dolby Pro Logic II, in its first mobile application.
Dolby Pro Logic II is the first processor to produce 5.1 surround sound from ANY
two channel stereo audio source...FM, CD, MP3, or VHS movie audio tracks. This
is a major advance in mobile audio, to be able to simulate a true 5.1 surround
sound for enhanced sonic realism. Now you can experience a true you are there
audio experience. Dolby Pro Logic II in the DVH920 generates front, center,
surround and subwoofer line output to external amplifiers for a true mobile
surround sound system.
The DVH920 has auto select for Dolby Digital/DTS sources, and two fiber optic
inputs are available for digital 5.1 signals from either the VRX925VD or the
VCZ625 changer.
Finally, the DVH920 has 4 volt, 6 channel line level outputs to ensure low
system noise, and has CeNet in/out connections for system control and expansion.
Amps
This system is
powered by three Clarion amplifiers:
DPX1001.2
Class T digital amplifier with 1000 watts bridged into 2 ohms, the APX401.4 4
channel amplifier with 50 watts RMS x 4 at 4 ohms, and a APX201.2 2 channel
amplifier with 50 watts RMS x 2 at 4 ohms.
These
amplifiers have unique side heat sinks that can be removed from the amplifier
and can be painted, powder coated or chromed. I chose to paint the sinks to
match the Bright Red exterior color of the GTP. I used a can of GM spray paint
with the proper color match. I think it really helps to integrate the amplifiers
into the trunk install.
DPX1001.2 Class
T digital Amplifier APX401.4 4 Channel Amp APX210.2 2 Channel Amp
Bass Extender Control
2 Ohm Stable (1 ohm stereo on DPX1001.2)
Bridgeable
Speaker Level Inputs
Gold Plated Terminals
Ground Loop Isolation Input Circuit
Mixed Mode Operation
Variable High/Low Pass Electronic Crossover (Low Pass on DPX1001.2)
Crossover Frequency Multiplier (x1, x10) (Except DPX1001.2)
Input Select Switch (Stereo, Mono, L+R Mono)
Bi-Polar MOSFET Design
2 or 4 Channel Line Level Inputs
Frequency Response 20Hz - 20kHz
Input Sensitivity .2~2.5V
Speakers
The SRW2581 is
a 10" dual voice coil 4 ohm sub. It is optimized for either sealed or ported
boxes. I prefer a sealed box for the more accurate bass that this type of box
produces. The speaker cone is a polypropylene base with a deposit of titanium on
both the front and rear surfaces. This makes the cone stiffer so along with the
light mass of polypropylene the speaker cone will not distort under large signal
inputs. The cone can move faster in response to the signal, which lowers speaker
distortion. This subwoofer will handle 400 watts peak power. I used 2 and wired
the subs in a series-parallel connection to present a 3 ohm impedance to the
subwoofer amp.
SRS1684 separates in the
front SRR1384 Coaxial for center channel SRX4093 4"
for rear channels
The Separates use aluminum
coated polypropylene cones and Kevlar voice coils for high power handling and
accurate sound reproduction. The crossovers are 12 dB/octave, and use precision
components. The Coaxials have the same construction, plus a tweeter that can be
swiveled for optimum imaging.
