HDMI LPCM to Analog Multichannel Converter? - AVS Forum
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post #1 of 106 Old 04-19-2007, 02:30 PM - Thread Starter
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I was wondering if anybody knows of any existing or upcoming solution for converting HDMI LPCM audio into analog multichannel audio for older equipment (I've got a Marantz 8400 w/ multichannel analog inputs). This is particularly cumbersome when dealing with the newer BluRay and HD DVD players, which don't all have analog out. Like the people in this forum, I'm very interested in the audio benefits of these new players, and I don't want downsampled S/PDIF data if I don't have to have it. (The big issue here is cost; I can get a player for a few hundred dollars that does what I need video-wise, but I'd need the top-of-the-line player just to get the multichannel analog out).

Thanks for your thoughts,
Richard
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post #2 of 106 Old 04-19-2007, 03:41 PM
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Quote:
Originally Posted by rplotkin View Post

I was wondering if anybody knows of any existing or upcoming solution for converting HDMI LPCM audio into analog multichannel audio for older equipment

I don't know whether or not these are still available but I came across them when trying to solve the same problem for a friend. Ended up buying the DE-006 for about US$40 from New Zealand.

Jazz Hipster DE-005 Digital Audio Decoder

Jazz Hipster DE-006 Digital Audio Decoder

Here is a review.

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post #3 of 106 Old 04-20-2007, 07:34 AM - Thread Starter
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Hey Cavu,

That looks like exactly what I'm looking for if it were updated for HDMI linear multichannel PCM instead of just optical/coaxial (which can't carry a stream of data at a high enough bitrate).
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post #4 of 106 Old 10-30-2007, 11:10 PM
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any update on this?
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post #5 of 106 Old 10-30-2007, 11:16 PM
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Don't count on it. It would be made for a very small niche market that's just not going to be around for too much longer. Not gonna happen.

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post #6 of 106 Old 10-31-2007, 10:33 AM
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i found one. www.zektor.com but they wanted 500 for it.
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post #7 of 106 Old 10-31-2007, 10:51 AM
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Quote:
Originally Posted by lb_oz View Post

i found one. www.zektor.com but they wanted 500 for it.

Nope. I have that and it does NOT convert PCM (or any digital audio) to analog. It switches multiple HDMI, TOSlink, s/pdif and analog audio. The only conversion is between TOSlink and coax S/PDIF.

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post #8 of 106 Old 10-31-2007, 10:51 AM - Thread Starter
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Hey lb_oz,

I don't think that's doing what we want. They've got a switch that flips between 3 analog multichannel inputs, and it also switches HDMI *video*, but it doesn't grab the multichannel audio from the HDMI.
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post #9 of 106 Old 10-31-2007, 11:28 AM
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i thought maybe one of their products might do it, but Im not willing to spend that much anyway
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post #10 of 106 Old 10-31-2007, 11:54 AM
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Hmm I run an HTPC and just ordered up my new LG GGC-H20L BR/HD DVD drive for it. At 300 bucks I get both and my sound card outputs both optical 7.1 and analog 7.1. Got a love those HTPC's. I also use it for my DVD Audio discs too even though I have a dedicated DVD player that also plays back DVD Audio.
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post #11 of 106 Old 10-31-2007, 12:14 PM - Thread Starter
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good for you scooter. I could buy a player that decodes DTS HD-MA and sends it over HDMI and analog (if it's traveling over optical, it's *not* high-resolution audio) -- this player would cost less than an HTPC and a $350 drive.

The issue in this thread, however, is converting multichannel HDMI LPCM to multichannel analog audio.
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post #12 of 106 Old 11-01-2007, 03:21 PM
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Don't know if any of you have been to Gefen's forum, but they've been promising a remedy forever now. Haven't been there in a couple weeks, the'y've gone silent lately, wonder if they've finally did it. If anybody could do it, you would think it would be them

Here's the link http://forum.gefen.com/topic.asp?TOPIC_ID=2578
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post #13 of 106 Old 11-07-2007, 02:21 PM
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Without HDMI, you will probably have to buy a player with 5.1 analog outputs. Even if such a product that you want existed, it would probably rival or exceed the cost of the player you were thinking about buying so you might as well it get it all in one chassis, the HD media player which does the LPCM to analog conversion for you. If you want to take advantage of the lossless audio codecs for TrueHD and DTS HD MA, you will also need the proper decoders in the player for conversion to PCM (DTS HD MA decoding in the player doesn't exist yet, unfortunately).

That's solution I'm forced into with my HDMI-challenged system (I use an analog multichannel preamp/switcher for 5.1 audio/movie tracks). Finding a suitable source player with 5.1 "audiophile-grade" DACs is also going to be a big issue.... Uncompressed PCM and TrueHD (and presumably later DTS HD MA) lossless audio are well worth it for reasonably good HT systems.

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post #14 of 106 Old 01-09-2008, 02:18 PM
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Bump.

I was hoping one of these might debut at CES. Has anyone heard anything?
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post #15 of 106 Old 01-09-2008, 02:20 PM - Thread Starter
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I saw a post about a Gefen product, but have yet to see it show up on their site.
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post #16 of 106 Old 01-09-2008, 03:05 PM
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Quote:
Originally Posted by rplotkin View Post

I saw a post about a Gefen product, but have yet to see it show up on their site.

Yeah a guy at Gefen made it sound like some kind of release was imminent last August or so, and they haven't said anything of interest since.
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post #17 of 106 Old 01-09-2008, 03:06 PM
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Quote:
Originally Posted by sivadselim View Post

Don't count on it. It would be made for a very small niche market that's just not going to be around for too much longer. Not gonna happen.

This is still my opinion.

Multichannel analog inputs will be a thing of the past very shortly.

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post #18 of 106 Old 01-10-2008, 09:32 AM
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Gefen showed exactly this device at CES. I am now in transit, so I do not have any info with me. Try Gefen's website.

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post #19 of 106 Old 01-10-2008, 12:03 PM
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Quote:
Originally Posted by Kal Rubinson View Post

Gefen showed exactly this device at CES. I am now in transit, so I do not have any info with me. Try Gefen's website.

Hmm, no mention of it on their website. Most of their newly announced devices do something with HDMI video, but nothing like what we are looking for. Are you sure you saw this device at CES?
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post #20 of 106 Old 01-10-2008, 12:39 PM
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Please I want this bad!!
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post #21 of 106 Old 01-10-2008, 08:32 PM
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Quote:
Originally Posted by Bryan_P View Post

Hmm, no mention of it on their website. Most of their newly announced devices do something with HDMI video, but nothing like what we are looking for. Are you sure you saw this device at CES?

Yup. They told me this was coming when I inquired about a month ago. Prototype on display does only DD, dts, LPCM, etc. but they said that they are working on TrueHD and dts-MA as well.

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post #22 of 106 Old 01-10-2008, 09:09 PM
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Quote:
Originally Posted by Kal Rubinson View Post

Yup. They told me this was coming when I inquired about a month ago. Prototype on display does only DD, dts, LPCM, etc. but they said that they are working on TrueHD and dts-MA as well.

If the player decodes the signal internally (TrueHD and/or DTS-HD MA), should not LPCM output be sufficient? Or is this thing supposed to be an external decoder as well?
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post #23 of 106 Old 01-10-2008, 11:45 PM
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Is there something that takes 1 HDMI and converts it to multi-channel analog for sound
and a HDMI out for the video? This is good for PS3.

There is always someone out there that gives you opinion of a product that they don't even own.
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post #24 of 106 Old 01-11-2008, 05:12 AM
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Quote:
Originally Posted by Kal Rubinson View Post

Yup. They told me this was coming when I inquired about a month ago. Prototype on display does only DD, dts, LPCM, etc. but they said that they are working on TrueHD and dts-MA as well.

Man, converting LPCM to a multichannel analog out would be enough for me. I wish they'd put it out. How much do you guys think this thing would cost? If it's much over $200, it would make more sense to just buy a new receiver (for me anyways....).
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post #25 of 106 Old 01-11-2008, 11:04 AM
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lpcm is good enough for my needs I would buy that in a heart beat, i want this really really bad
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post #26 of 106 Old 01-11-2008, 12:48 PM
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Quote:
Originally Posted by Bryan_P View Post

Man, converting LPCM to a multichannel analog out would be enough for me. I wish they'd put it out. How much do you guys think this thing would cost? If it's much over $200, it would make more sense to just buy a new receiver (for me anyways....).

I am guessing it will be. Includes 5 20w amps.

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post #27 of 106 Old 01-11-2008, 02:23 PM
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I'm not sure I understand why amps would be needed. Wouldn't it, in effect, simply be a DAC?
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post #28 of 106 Old 01-11-2008, 04:18 PM
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Funny, I was thinking about just such a device just the other day - wondering if such a beast existed.

I figured that's essentially what the newer receivers are doing (plus handling the video) so I figured no company would bother stripping out that function into a separate box. However, if Gefen prices it right, I might do it rather than go to the trouble of swapping out an otherwise perfectly good receiver.

It's an interesting problem though. Unless you have a super duper high-end pre-pro/amp, it probably won't make sense from a cost standpoint.

For example, my 6+ year old Denon 3803 was ~$1000. I could replace it with a 2808 for ~$1000. I could replace it with a 3808Ci for ~$1400.

Let's say the vaporware Gefen unit costs $400. I could probably sell the Denon for $400 (guessing) and offset a good portion of a very comparable updated receiver with newer DACs, video scaling/switching, more inputs, better remote - you name it. It'd be hard to justify throwing more money at an aging setup IMO.
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post #29 of 106 Old 01-11-2008, 04:23 PM
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Yeah, my receiver is a Denon 1804 that was probably around $500 retail, tops, which is about as much as I'd spend on a new receiver if I were to buy one now (which I don't have the money for). But I could spend $200 for the Gefen product... really I don't see how they could hope to sell many for much more than that. Maybe it'll never come to market.
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post #30 of 106 Old 01-12-2008, 08:49 AM
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Quote:
Originally Posted by Bryan_P View Post

Yeah, my receiver is a Denon 1804 that was probably around $500 retail, tops, which is about as much as I'd spend on a new receiver if I were to buy one now (which I don't have the money for). But I could spend $200 for the Gefen product... really I don't see how they could hope to sell many for much more than that. Maybe it'll never come to market.

I think it is targetted at the custom install business where it will add to an existing install and not require rewiring/reprogramming and where its cost is inconsequential. It is not aimed at the mass market where a decent modern AVR has it beat for features and cost. FWIW, it would be a great add-on for my Meridian Ref861 until Meridian gets around to adding HDMI.

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