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Old 08-09-2013, 11:26 PM
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Installed a new DVD Receiver in my '13 Limited

The original 10-speaker system sounded dreadful--bloated, boomy, ill-defined bass at too-high level, shrill, harsh treble at too-high level, and all the sound coming from everywhere and nowhere but none from in front of me. My fellow-audiofool-goodbuddy commented that initially, he thought the system sounded not too bad with the bass and treble at full cut, but after a half-minute or so, he too realized that even so adjusted, the bass, treble, and 'soundstage' sounded terrible. The system's only sonic aspect that was OK was the quality and quantity of low bass from the SW.

So we started the audio rebuild with a new JVC DVD receiver, model KW-ADV65BT. It cost about $370 including some installation hardware from Crutchfield, and I bought the PAC adapter-cable system that does not 'power' the steeringwheel controls*.

Took about 2 hours to install; that required cutting a strip of plastic from the inner-top of the opening and removing the rectangular bracket within the cavity**.

Initial impressions of sound quality are positive--the bass and treble spectrums were MUCH better balanced and no longer shrill. So far, I have the bass and treble cut a couple notches. The lowbass from the SW sounds quite good--probably good enough to leave being driven by the original amp. I believe this new frontend will prove to be a fine unit.

Further plans will be to install the same Polk home-system satellite speakers, model TL1 SAT, atop the instrumentpanel and in the corners, same as I had in my Ford Escape. Here the right-channel unit is pictured without its grill.


These handle the 8 octaves of upper-bass thru treble very well, driven thru a 50Hz hi-pass filter. I plan to continue to drive the rear-door, D-pillar, and subwoofer with the original digital amp.

I'll replace the front-door speakers with the very same 8" bass drivers I installed in the Escape, SB Acoustic SB23NRXS45-8s from Madisound. These are high-excursion, fairly shallow bass drivers that sounded excellent in the Escape driven thru a 100Hz low-pass filter. I used and will use again an old, classic Alpine V12-series 4-channel amp, model MRV-F307...

...in which I've improved some parts, mostly coupling and powersupply-bypass caps.

I'll use Audioquest Type 2 4-solid-conductors speakercable for the Polks and AQ's G2 stranded cable for the frontdoor drivers.

More later. So far so good.

Functions lost:
1. The back-up camera, because there apparently is no adapter from the European connector Mercedes chose to the video-RCA connector the rest of the world uses. Someday...
2. The front-back fader, but left-right works.



* I've had several cars over the years with steeringwheel controls and NEVER used them.

** The 2 blue-with-white-stripe wires must be connected or the original poweramp won't turn on.
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Old 08-16-2013, 07:57 AM
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Re: Installed a new DVD REceiver in my '13 Limited

Yuu lost me at home speakers atop the dash.
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Old 08-16-2013, 08:45 AM
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Re: Installed a new DVD REceiver in my '13 Limited

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Originally Posted by Relbus View Post
Yuu lost me at home speakers atop the dash.
Yeah, same here. I would have just upgraded the components with better car speakers to retain the OEM look. Also, I wouldn't want to lose the backup camera. Makes backing into parking spots easy.
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Old 08-16-2013, 10:40 AM
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Re: Installed a new DVD REceiver in my '13 Limited

Oh wow, those can become projectiles in an accident.
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Old 08-16-2013, 01:21 PM
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Re: Installed a new DVD REceiver in my '13 Limited

Isn't this a wonderful country? You guys get to do yours the way you like it, and I get to do mine the way I like it...which is with the music coming from in front of me and not from around my knees. Those little systems get double-sided-sticky-taped to the instrumentpanel and to the windshield, and they certainly never moved in the Escape.

I now have the back seats out, preparing to install the amp and all its wiring; I hope to finish than this weekend and get the 8"ers installed in the front doors.

I hope that the rest of the original system that I'm leaving operational--being the rear-door and the D-pillar pairs plus the SW--can be balanced with the new 'half'. We'll find out soon.
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Old 08-16-2013, 01:31 PM
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Those speaker sitting on the dash are big, I bet they sound good though! :-)
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Old 08-16-2013, 01:55 PM
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Quote:
Originally Posted by jeffreybehr View Post
Isn't this a wonderful country? You guys get to do yours the way you like it, and I get to do mine the way I like it...which is with the music coming from in front of me and not from around my knees. Those little systems get double-sided-sticky-taped to the instrumentpanel and to the windshield, and they certainly never moved in the Escape.

I now have the back seats out, preparing to install the amp and all its wiring; I hope to finish than this weekend and get the 8"ers installed in the front doors.

I hope that the rest of the original system that I'm leaving operational--being the rear-door and the D-pillar pairs plus the SW--can be balanced with the new 'half'. We'll find out soon.
Of course you get to do it the way you like but if you post it on a site for the world to see you'll get opinions. My opinion is not positive for home speakers sitting on your dash but props to you for going outside the box.
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Old 08-16-2013, 02:10 PM
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Re: Installed a new DVD REceiver in my '13 Limited

Looks amateur to have speakers double sided taped to your dash. But all good man, its your Jeep, do what makes you happy.
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Old 08-17-2013, 09:04 AM
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Your going to have to post pics when your done.
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Old 08-17-2013, 01:11 PM
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Re: Installed a new DVD REceiver in my '13 Limited

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Originally Posted by Relbus View Post
You're going to have to post pics when you're done.
Indeed. Two from last nite.

Rear seat out. Barely visible under the wide, shiny plastic shield is the nitrogen (?) tank for the air-suspension system.


Right-front doorpanel. The 6X9" driver is mounted on an ovoid 'tube' molded as part of the door. I decided not to install the excellent 8" bass drivers I have and at least temporarily use the original 6X9s, driven by the new amp.

Got the wire colors from both frontdoor drivers so we could find and snip them (at the rear of the LR-door hump) in the cable bundle coming from the amp.

I wired the power from the battery, using a 30-amp inline fuse using #10 wire. Here's this morning's mess.


WOW is this work fun--NOT--when it's about 105dF outside. Fortunately I have a garage and a decent evap. cooler that blows air on us.
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Old 08-18-2013, 02:45 AM
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Re: Installed a new DVD Receiver in my '13 Limited

Got the system running today/tonight.

Got the head unit out again.


Here are the 3 cables I installed. The black is the Audioquest interconnect for the four channels for the new or new-use front speakers. The blue is spare for a possible separate subwoofer amp. The small blue is the remote amp turn-on.


I'm rather proud of myself*, getting the side panels off the center console and running the 3 cables forward and down out of the head-unit cavity, then rearward along the left side of the center console. Here are the three cables black-taped together and running down and out the center console.


Here are the cables after running under the rear carpet and out under the rear seat. The AQ cable was just right in length while the extra SW cable is much longer than ever will be needed...but that's what it was.


So now the front-door 6x9s are bass drivers, low-pass-filtered and driven by channels 3 and 4 of the Alpine V12-series amp, while the new Polk speakers are atop the instrument panel (not yet pictured) and high-pass-filtered and driven by channels 1 and 2 of the Alpine. The original speakers still working are the center-channel single atop the instrument panel, the rear-door pair, the D-pillar pair, and the SW.

Brief listening indicate that the overall balance (new speaker pairs v. original pairs and overall SW level) is quite OK. I suspect I'll disconnect the center-channel speaker, as one of those, when set to fairly high levels, and I think this one is, tend to narrow the front soundstage. We'll see.

More pics tomorrow in the light, maybe even with the rear seat reinstalled.


* 'Myself' being a chubby oldfart with a recently replaced left knee that's still a little sore.
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Old 08-18-2013, 05:33 PM
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Re: Installed a new DVD Receiver in my JGC '13 Limited

With a couple-more hours listening to this new system, I'm happy to write that 'dreadful' is now about the LAST adjective I'd use for sound quality.

I still have the new* amp's two gain controls full up, and the levels of the front-speaker pairs seem to match those of the remaining portions of the original system very well. Currently, the HP filter is at 75Hz while the LP filter is at 100Hz. The original SW has plenty of bottom-2-octaves output and great power-handling capacity, making the huge bassdrums in Classical orchestras quite impactful. The front soundstage is still a little narrow, due apparently to the too-high level of the original center speaker which probably I'll disconnect.

I'm very pleased with the results of the considerable effort--but not much money--my buddy and I have put into this.


* Again, this Alpine amp, model MRV-F307, is a member of the old V12 series, all analog and maybe 20 - 25 years old. This version uses a common-to-Alpine-V12 configuration of 4 channels of 50 Watts (continuous) into 4 Ohms or 60 into 2 Ohms (at 14.4VDC). Each pair of channels is bridgeable to one channel of 120 Watts into 4. Channels 1 and 2 have a switchable, variable high-pass filter (12dB/octave) and channel 3 and 4 have a switchable, variable low-pass filter. Alpine also made 5-channel versions of these, adding a 150-Watt (into 4) channel for driving subwoofers. My friend has one of these, and it's long--my '307 is about 10+ inches square while his 5-channel amp is almost 16" long.
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