Range Rover P38 # 015 - Speaker Wiring and New Head Unit with DAB+

Today I'll work on the wife's P38. I will be converting the original in-door amplifier speakers to regular speakers with passive crossover filters for use with any regular DIN-size head unit.

I'll be using the original speakers, woofer, midrange and tweeters in front. Woofers and midrange in back. Subwoofer and door amplifiers have already been eliminated.

See video # 8 for more details about that:
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Video # 5 is somewhat related as well:
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To remove C-pilar trim check out video # 14:
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Using the original wiring I'll just install a series capacitor with the midranges to filter out the lowest frequencies. For the more "audiophile" you could install a series toroid with the woofer as well to filter out higher frequencies for it. The tweeter already has a series capacitor. See further down for link to calculator with visual connection diagrams.

You'll see how I figure out which is positive and negative for the speakers, and then I'll hook up a brand new Kenwood KMM-BT502DAB receiver including DAB-antenna on the right rear quarter window.

I had some mixed results using the original antenna with the small SMA-plug for my DAB-receiver, so I suspect it's tuned more for FM (87.5 - 108 MHz) than DAB (174.9 - 239.2 MHz). Although it's pretty close to twice (2x) the FM frequencies so it should work rather ok in theory. But maybe the built-in FM-amplifier is limited to a maximum of around 108 MHz ?

To calculate the value of the midrange capacitor I used a value of 4Ω (ohms) for the impedance of the midrange and woofer. And I wanted a cross-over frequency around 400 Hz. Using this calculator I got close to the 100 µF value I installed:

https://www.v-cap.com/speaker-crossov...

Here's where I got the capacitors (one for each door is required):
https://www.ebay.com/itm/230558375587

The capacitors I used were 50V since I doubt the head unit output much more than a maximum of 14.5V to the speakers.

As always please comment below and I'll respond as best I can.

Thanks for watching, and I hope you found this video interesting.

You can reach me at [email protected] if you want to get in touch with me. Follow me on Twitter:   / 0ddj4rl3   or Instagram:   / 0ddj4rl3