our rl have a 5.1 system, will it work for the XM HD, or do we need the HD receiver for it?

 

You would need an HD receiver for that functionality.

You might try posting this in Audio and Video as well to get responses from those more in the know about this.

 

This is the first I have read about XM HD radio. It turns out that XM HD radio is entirely different than HD radio of the AM and FM variety.

XM HD is more properly described as XM Surround Sound (of the 5.1 variety). It uses a proprietary decoding scheme requiring hardware made by Neural Audio, now owned by DTS. The 5.1 material is downmixed to a 2.0 signal which goes out over the airwaves, and the Neural Audio decoder upmixes it to 5.1 again. It looks as if the only hardware that exists is home audio equipment.

There does not appear to be a car manufactured with the XM HD capability, although there are quite a few that have HD radio receivers now, which is a whole different thing.

So in answer to the original question, the Acura RL cannot play XM HD in HD. By the way there are two channels reputed to have full time XM HD, 76 and 113, and others with partial programming.

There is so little information on the product, you wonder if it is an orphan web page.

Anyone have more info?