"OFFICIAL" 2017 Marantz AV7704 Owner's Thread - Page 4 - AVS Forum | Home Theater Discussions And Reviews
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post #91 of 932 Old 10-19-2017, 10:27 AM
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Any idea if the new DSU will have support for Wides?
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post #92 of 932 Old 10-19-2017, 04:19 PM
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Quote:
Originally Posted by SteveH View Post
I probably wasn't clear. Background: there have been running firmware changes on algorithms like DTS:X and ATMOS that are not announced; they just happen just like a Windows update on a PC. I was told from a non-Marantz engineer who I trust that explained a pending DSU change was going to occur. He was enjoying an early listen/comparison and LOVED it and claimed it was a big bump in performance.

My point was the 7704 will automatically update that in the background just as other upgrades have happened along the way. This and other firmware updates is a reason why, all things being equal, I prefer to have a current product in my rack. It's why a 7702 was never undated to DTS:X. If there was't a multi-month delay by DTS:X, every 7702 owner would have it. But now they don't simply because it happened after the product was end-of-lifed. It's why the 8802 (when it was possible in the hardware) got 3 years of updates.

My other part of my post was that the 7703 to 7704 comparison sounded identical to my ears. Not so if you take advantage of things like eARC (I won't). Or assuming my contact was accurate, the new DSU sounds subjectively much better. For my system, I will ALWAYS engage DSU because I think it is a big deal for all legacy movies. I also love DTS Neural X for music. If the new DSU is better, then I will be happy to switch.
Two of the hardware improvements from the AV7703 to AV7704 are in the 5V reference voltage circuit that supplies the AKM AK4458VN DAC's. These improvements should improve sound quality in the AV7704 over the AV7703. This voltage is used as a reference by the DAC, which is a voltage output DAC, and thus its reference voltage is very important. it is important to have a minimum of noise or variations in this voltage. These are sorts of hardware refinements that Steve mentioned. The two changes are:

The larger of the two bypass capacitors at each of the voltage references inputs (four capacitors per DAC, eight total) of the DAC have been increased from 47 microfarads to 220 microfarads. This means that these capacitors are now the same size as those used in the AV8802a, which has a two channel AKM DAC with a similar architecture. The filtering of the reference voltage should be improved by 12dB. This likely reduces noise and distortion at low frequencies as 60Hz and multiples will be better filtered from the reference voltage. The evaluation board for the AK5548VN from AKM uses 47 microfarad capacitors so Marantz is going above an beyond here and moving the AV7704 closer to AV8802a territory. The supporting circuitry for the DAC's significantly affects the final results. The opamps after the DAC's are already the same, and the HDAM's use the same circuit design as the AV8802a.

The second improvement is in the regulation of the reference voltage, which is 5V. Again, stable is better. The AV7703 uses a 5V regulator. Noise and 60Hz on the 5V line are reduced. Generally this is good enough and is a typical design. The same arrangement is used in the AV8802a. The AV7704 first uses a 7V regulator, which of course cuts the voltage to 7V, and cuts noise, and 60Hz and multiples. After the 7V regulator a 5V regulator then removes most all of what little is left and sets the output to 5V. The 5V regulator is presented with a steady 7V so its performance should be excellent. This "belt and suspenders" approach is not common.

Taken together the two improvements in the reference voltage quality are significant from a technical standpoint. Of course the improvements take a good product and make it better. How much of the improvement that is likely in measured sound quality can be heard is always a question with these already good products, but these changes do show Marantz's efforts at product improvement.
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post #93 of 932 Old 10-19-2017, 04:36 PM
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Quote:
Originally Posted by bigguyca View Post
Taken together the two improvements in the reference voltage quality are significant from a technical standpoint. Of course the improvements take a good product and make it better. How much of the improvement that is likely in measured sound quality can be heard is always a question with these already good products, but these changes do show Marantz's efforts at product improvement.
Nice post and thanks for sharing. In fairness, I did my comparison in a room with an ever-so-slight reverb (14 foot ceilings with carpet). I intentionally and normally listen with other enthusiasts AND in a better room when I compare. When the 8805 eventually gets released, I will be doing a lot more careful listening and comparing the 7704 to the pending 8805. In fact bigguyca, that listening session will be taking place near you in CA (LA area). If you are interested, you are invited. There will be limited seats and only to AVS members so that they can post what they here.
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post #94 of 932 Old 10-19-2017, 06:04 PM
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Originally Posted by bigguyca View Post
...

Taken together the two improvements in the reference voltage quality are significant from a technical standpoint. Of course the improvements take a good product and make it better. How much of the improvement that is likely in measured sound quality can be heard is always a question with these already good products, but these changes do show Marantz's efforts at product improvement.
I very much agree with this attitude. MY filosofy about these kinds of audio changes is that EVERY change makes a difference, whether I or you or anyone can hear it. Individually audible or not, these tiny improvements add up, so maybe you or I or anyone can't hear ONE improvement, but we can hear the combination of two or three or four improvements. Hence, each tiny improvement is worth making.

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post #95 of 932 Old 10-24-2017, 03:10 AM
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Originally Posted by jeffreybehr View Post
Steve, see page 9 of OP's linked manual; input impedance is 24K RCA, and 24K per leg, balanced.
So I suppose they are compatible, aren't they?
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post #96 of 932 Old 10-24-2017, 10:31 AM
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Quote:
Originally Posted by SteveH View Post
Nice post and thanks for sharing. In fairness, I did my comparison in a room with an ever-so-slight reverb (14 foot ceilings with carpet). I intentionally and normally listen with other enthusiasts AND in a better room when I compare. When the 8805 eventually gets released, I will be doing a lot more careful listening and comparing the 7704 to the pending 8805. In fact bigguyca, that listening session will be taking place near you in CA (LA area). If you are interested, you are invited. There will be limited seats and only to AVS members so that they can post what they here.


Hey Steve any idea when this LA listening session will take place?


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post #97 of 932 Old 10-24-2017, 11:15 AM
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Hey Steve any idea when this LA listening session will take place?


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It's all based on when the 8805 gets released. TBD...

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post #98 of 932 Old 10-24-2017, 11:47 AM
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Originally Posted by tasoik View Post
So I suppose they are compatible, aren't they?
It's 99.9% likely to be just fine.

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post #99 of 932 Old 10-26-2017, 06:38 AM
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My dealer just got this in stock,and i want to upgrade my 7702 gen1,but want to know if this unit is born with the ability to chose DSU for DTS tracks and vice versa if i so chose?

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post #100 of 932 Old 10-26-2017, 06:42 AM - Thread Starter
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My dealer just got this in stock,and i want to upgrade my 7702 gen1,but want to know if this unit is born with the ability to chose DSU for DTS tracks and vice versa if i so chose?
Yup.
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post #101 of 932 Old 10-26-2017, 06:44 AM
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Yup.
Awesome, thank you jd.. Gonna order one today :-)

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post #102 of 932 Old 10-27-2017, 01:54 AM
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I'm sorry, what is DSU?
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post #103 of 932 Old 10-27-2017, 02:04 AM - Thread Starter
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I'm sorry, what is DSU?
DSU = Dolby Surround upmixer, the simulator that replaced DD Pro Logic II.
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post #104 of 932 Old 10-28-2017, 07:15 PM
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Could I use my current SR6008 AVR as my power amp with the AV7704? Or would this just be silly. I would eventually get proper amps down the road.

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post #105 of 932 Old 10-28-2017, 07:27 PM
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Could I use my current SR6008 AVR as my power am with the AV7704? Or would this just be silly. I would eventually get proper amps down the road.
You could, but you wouldn't be taking advantage of XLRs. There might not be much difference between RCA and XLR if your preamp and amp are close to each other. XLRs are probably most helpful with subs and long cable run rather than main speakers.

But the biggest issue is of course that you could only power 7 channels with your SR6008, while AV7704 will process 11 . You would need another amp/receiver to utilize all channels. Any old 5.1 receiver with a multi-channel input would work for the extra 4 height channels. Those can be had for like $100 on craigslist.

Of course, if you are spending as much as the AV7704 costs, you will probably not go that route
Personally, I chose the SR7011 and use an old receiver for 10th/11th channels.
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post #106 of 932 Old 10-28-2017, 08:43 PM
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You could, but you wouldn't be taking advantage of XLRs. There might not be much difference between RCA and XLR if your preamp and amp are close to each other. XLRs are probably most helpful with subs and long cable run rather than main speakers.

But the biggest issue is of course that you could only power 7 channels with your SR6008, while AV7704 will process 11 . You would need another amp/receiver to utilize all channels. Any old 5.1 receiver with a multi-channel input would work for the extra 4 height channels. Those can be had for like $100 on craigslist.

Of course, if you are spending as much as the AV7704 costs, you will probably not go that route
Personally, I chose the SR7011 and use an old receiver for 10th/11th channels.
7 channels works for me in my setup, I just want the better processing and HDMI spec plus better calibration. My long term goal is to have separates then just upgrade the pro every 4 years or so.

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post #107 of 932 Old 10-29-2017, 05:37 AM
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Hello!

I’ve juste received my AV7704 last week, i’m looking for the Marantz cd player CD6006.
I have to choose the type of the cable to use, rca or optical / coaxial.
Is it better to use the dac of the cd player or the dac of the processor?
In some data sheet the processor can use the converter until 192KHz\32Bits, is it true?

Thanks
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post #108 of 932 Old 10-30-2017, 10:14 AM
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Just installed a 7704 into my HT last week and I am noticing a very subtle lip sync issue, almost to the point were I am not sure if it's me or if it is indeed a lip sync delay. Wondering is this is common w/ the Marantz 7703 or 04? I know you can adjust for these in the processor and the fact that I have a 10m fiber optic hdmi cable going to my projector could be the main culprit. Also, do your adjustments for lip sync apply to all inputs or can you do them for each input?
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post #109 of 932 Old 10-30-2017, 10:28 AM - Thread Starter
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Just installed a 7704 into my HT last week and I am noticing a very subtle lip sync issue, almost to the point were I am not sure if it's me or if it is indeed a lip sync delay. Wondering is this is common w/ the Marantz 7703 or 04? I know you can adjust for these in the processor and the fact that I have a 10m fiber optic hdmi cable going to my projector could be the main culprit. Also, do your adjustments for lip sync apply to all inputs or can you do them for each input?
Each input.
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post #110 of 932 Old 10-31-2017, 09:21 PM
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madbrain, I'm sorry about that. I must have pressed the wrong button, got into the wrong thread, and posted my question without checking where I was.
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post #111 of 932 Old 10-31-2017, 11:29 PM - Thread Starter
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madbrain, I'm sorry about that. I must have pressed the wrong button, got into the wrong thread, and posted my question without checking where I was.
You can delete a post by selecting the EDIT button on the post you want to delete and then the DELETE radio button.
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post #112 of 932 Old 11-03-2017, 08:52 AM - Thread Starter
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DTS Virtual:X

The AV7704 is scheduled to receive the DTS Virtual:X firmware update (simulates height/surround audio with 2.1/3.1/5.1 setup) spring 2018.
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post #113 of 932 Old 11-03-2017, 08:58 AM
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Nice. Thanks for the info!
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post #114 of 932 Old 11-09-2017, 01:14 PM
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Hello all
I got this machine for 2 day's now.
And allready have some questions and remarks.

Remarks
why are the trigger outputs not assignable to a speaker setting?
Trigger 1: main, sub
Trigger2: center, rear/surround/ceiling

My master/slave switch is triggert by the HDMI passtrough standby current. So i want a new sollution.
My 2 main inputs both send stereo and multichannel aswell.

question
were are the RS232 codes? IP codes are also ok. but rs232 is more direct and oldskool
it's all funy and fancy an app to control the thing but the marantz app is very, well to be honest, WTF
the heos app has some appeal.
But i wrote a dedicated remote program for my previous Rotel RSP and i want to do it again.

streaming from a nas works OK but slow.
If someone finds a dedicated Heos package for Synology nas, please report

One final remark.
I had a good laugh about the paper microphone stand. Good thinking and cheap.
BUT the microphone has a default nut at the bottom so any camera tripod will do just perfect! A microphone stand will also do the trick
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post #115 of 932 Old 11-09-2017, 03:38 PM
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were are the RS232 codes?
Go to the downloads for the AV7703. The Protocols for the 7704 have not been published but they are the same.
http://us.marantz.com/us/Products/Pa...oductId=AV7703
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post #116 of 932 Old 11-09-2017, 10:11 PM
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Thumbs up

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Go to the downloads for the AV7703. The Protocols for the 7704 have not been published but they are the same.
Thanks !
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post #117 of 932 Old 11-11-2017, 04:36 AM
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streaming

Tried some streaming.
- you can have only 1 network shared directory. Multiple servers seems no problem.
- there is the option to view a server file structure based on the directory structure.
BUT the tracks inside the directory are sorted on the Title tag. So the inside of that directory is sorted wrong! I had to re-tag all my 10000+ files.
Which was easy with (MP3tag use this conversion Title >> $num(%track%,2) %title% )
this way the title is expanded with a leading tracknumber with 2 digits.
- i am not able to stream a 4channel flac file. Not sure what goes wrong. maybe i have to find the original DTS track again.
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post #118 of 932 Old 11-12-2017, 11:50 AM
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Specs-wise it appears to be a very minor update to AV7703. Let's wait for the first owners impressions and other reviews.
the 7704 has Dolby vision and HLG .the 7703 does not
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post #119 of 932 Old 11-12-2017, 02:27 PM
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@flamingeye the latest AV7703 firmware update has the new Dolby Vision and HLG support.
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post #120 of 932 Old 11-12-2017, 02:56 PM
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@flamingeye the latest AV7703 firmware update has the new Dolby Vision and HLG support.
I looked everywhere to see if it had that to no avail , thank's fgsouza that makes it easier for me financially, that was the one thing that was keeping me from buying the 7703
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