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NAD C658 BluOS Streaming DAC Owners & Discussion Thread

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7 hours ago, What Me? said:

Is there a chance of getting a copy of others target curves to try?

 

I have just reread the NAD instructions on loading the NAD curve and it recommends not adding that curve to the subs. Is that correct and what others are doing?

Hi Kev, working with snoopy it was recommended to duplicate the curves for the mains and the subs so they are on the same frequencies 

 

that said everything up to user preference so maybe try both and see what you think.

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4 hours ago, What Me? said:

Awesome. 

 

Appreciate it to experiment with

Same here pm me your email and I’ll send you the one I’m using at the moment.👍🏼

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On 03/04/2020 at 5:54 PM, What Me? said:

 

 

1. Recorded the responses with wide couch.

2. Separated Mains speakers into 2 Groups. Groups 1 & 2

3. Separated my 2 Subs into separate Groups. Groups 3 & 4.

4. Downloaded NAD curve into each.

5. Loaded New Project into unit.

 

 

Regarding point 2 above, I’ve been wondering what the advantage is in separating front L & R speakers into 2 groups?  Given that they will always work together.  
On another matter....what does the “take a snapshot” button do?  I thought it might be a screen shot or similar or is it a quick ‘save’ button? 
cheers. 
 

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I read in a research article that dealing with the mains independently made a difference, but I think the processing power of the unit isn't adequate enough to make a difference. 

Me splitting the mains made no discernible improvement over being grouped together. 

 

I do like the NAD curve on the mains and the Dirac curve on the subs more now.

 

I have been supplied some curves from this forum and will try these over the next few listening sessions.  

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2 hours ago, Mpr_65 said:

On another matter....what does the “take a snapshot” button do?  I thought it might be a screen shot or similar or is it a quick ‘save’ button? 
cheers. 
 

Pretty sure it saves the settings you have at that time and you can refer back to it. Bit like an undo option, save it, make changes, if you dont like the changes you can go back to the snapshot settings.

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I hope to spend some listening time this Easter period.

 

I had one of the Create Audio fuses in the cupboard so decided to instal it.

 

A definite improvement in the bass and mids followed.

 

Cheap upgrade

Screenshot_20200410-103415_eBay.jpg

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2 hours ago, What Me? said:

I hope to spend some listening time this Easter period.

 

I had one of the Create Audio fuses in the cupboard so decided to instal it.

 

A definite improvement in the bass and mids followed.

 

Cheap upgrade

Screenshot_20200410-103415_eBay.jpg

Hi Kev where did you install the fuse?

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It's fairly easy to replace the fuse. Takes seconds and no stripping required. 

 

Where the power cord plugs in at the back there is a small plastic fuse holder just under the inlet. 

Unplug the power cord.

You then take a small knife or screwdriver and prise it out. Once out the fuse is just sitting in its holder and pops out.

 

I ordered the fuse from eBay but coming from China could prove difficult. I would source one from Europe. 

The fuse is a 5x20mm 2A.

 

Kev

IMG_20200410_4855.jpg

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Posted (edited)

Replacing the fuse earlier now has me tweaking a little more. 

 

I have always got a roll of Response Super Sound Deadener on hand at home as I'm always adding to my electronic cases. 

 

So I decided to take the top off the C658 and take a look. 

 

You need a Philips screwdriver and a small allen key. 3/32 is what I used. 

Remove the 5 rear Philips head screws and the 8 allen screws from the top front and side to expose the unit. 

 

I then cut the Deadener into strips to install in the exposed metal parts of the bottom chassis, top plate and rear panel.

See pics.

 

I then prised off the easy to remove electrical connectors and applied a small amount of DeoxIT Hold to the connectors. 

 

I then applied DeoxIT Gold to the electrical connector pins and the balanced outlets.

 

Im about to have Easter lunch and then will have an audition and update the group.

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IMG_20200410_17995.jpg

Edited by What Me?

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Posted (edited)

Well, the difference was very apparent straight up.

 

The background noise floor has almost disappeared now.

 

Not as dramatic as when I added a Shunyata Hydra, but along those lines.

 

My demo song is The Dead South's, "In hell I'll be in good company" and the bass and banjo is very more clearly defined.

 

Was worth the hour to do.

 

Next track up is "Working on the Railroad", by the Notting Hillbillies and then "The Chain" by Fleetwood Mac.

 

Edited by What Me?

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OK. This just crazy.

 

It's so more musical now, and I'm not sure why.

 

The highs and instrument seperation is now unbelievably better.

 

A big call but I reckon this will be a modders paradise and take this unit to another level.

Next I'd like to bypass the power switch and fit an upgraded inlet. 

 

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Ive just ordered a Furutech FI30 IEC inlet and will fit it bypassing the on/off switch.

 

Hopefully the Post will deliver it quickly for me.

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Hi 

I've just received some good news,

The NAD C658 which has been out of stock in Australia for over a month is coming back in by the end of the week. I am offering very special SNA member pricing, If you've been reading this thread with interest, now's your chance to nab a NAD pre -amp before the inevitable price increases. 

Please send me a PM and I'll offer you my special deal including contactless free shipping.

Kind regards 

Geoff Haynes

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5 hours ago, Geoff@HeyNow Hi-Fi said:

I am offering very special SNA member pricing,

So these are going at around $2300. How do you compare? PM price is you can.

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8 minutes ago, ViVa said:

So these are going at around $2300. How do you compare? PM price is you can.

Pm sent 

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On 11/04/2020 at 5:04 PM, What Me? said:

Ive just ordered a Furutech FI30 IEC inlet and will fit it bypassing the on/off switch.

 

Hopefully the Post will deliver it quickly for me.

How's www.kevsnadmods.com going mate?

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23 minutes ago, Hi-Fi Whipped said:

How's www.kevsnadmods.com going mate?

Hi mate,

 

Your keeping me honest.

 

It's in freight from AVGallery and I await it's arrival.

I'm running to the Post box everyday to check.

 

Will advise.

 

Have you ordered a fuse and sound deadener yet?

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2 hours ago, What Me? said:

Hi mate,

 

Your keeping me honest.

 

It's in freight from AVGallery and I await it's arrival.

I'm running to the Post box everyday to check.

 

Will advise.

 

Have you ordered a fuse and sound deadener yet?

Cool, nah I'm not a modder, mine will most likely stay stock, for now anyway!

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Completely understand that view.

 

I've just come to realise that manufacturers put in what they need to make a competent product and there are some great benefits to doing small things to improve the sound. 

 

A clean power line/supply will bring a massive improvement to lowering background noise you don't realise is there until it's cleaned and then absence. 

 

If you haven't already add a power regenerator or such.

I have a Shunyata Hydra and that made a massive improvement to every component that plugs into it. 

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15 minutes ago, What Me? said:

Completely understand that view.

 

I've just come to realise that manufacturers put in what they need to make a competent product and there are some great benefits to doing small things to improve the sound. 

 

A clean power line/supply will bring a massive improvement to lowering background noise you don't realise is there until it's cleaned and then absence. 

 

If you haven't already add a power regenerator or such.

I have a Shunyata Hydra and that made a massive improvement to every component that plugs into it. 

Totally agree. Power regeneration is the most noticeable improvement you can make to a system. They improve the sound stage, lower the noise floor adding more clarity, The instruments become clearer and more identifiable. Yes, they do improve every component in the system that are connected to them. 
They also make a vast improvement over a power conditioner as effectively they separate your Hi-Fi system from the noise of the electricity grid. 
I have sold and owned PS Audio power generators for over 8 years and even over that time have seen vast improvement is technology in this category. 
Geoff 

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Posted (edited)

To C658 owners and Dirac users there's a software update on the Dirac website.

 

Version 2.5.3, which I have downloaded but it keeps crashing.

 

I then downloaded 2.5.2 which is still a recent update and will recalculate my filters and curves and audition today.

 

 

Edited by What Me?

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37 minutes ago, What Me? said:

To C658 owners and Dirac users there's a software update on the Dirac website.

 

Version 2.5.3, which I have downloaded but it keeps crashing.

 

I then downloaded 2.5.2 which is still a recent update and will recalculate my filters and curves and audition today.

 

 

Please let us know if it improves anything....

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Posted (edited)

OK, so earlier today I reloaded my measurements and then loaded my fave curves into Dirac for calibration with the new software then reloaded into the C658.

 

Played a few familiar tracks to find no dramatic changes. I then played a few strong bass tracks with subtle nuances intertwined and found the mid to low bass tighter. Subtle, but audible.

Not sure what the software changes were though.

 

Today's tracks:

Dire Straits. You and your friend

Bowie.          Cat people

The Cure.     Close to me.

INXS.             Beautiful Girl. 

U2.                 Stay, far away, so close.    MQA

Notting Hillbillies.    Railroad song

Edited by What Me?

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