D-Sonic custom Audio amps - Page 65 - AVS Forum | Home Theater Discussions And Reviews
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post #1921 of 1970 Old 04-14-2019, 09:08 PM
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Quote:
Originally Posted by Marc Alexander View Post
These are -10dB. They also carry -15dB and -20dB but that much attenuation seems excessive. PE has an excellent return/exchange policy.

https://www.parts-express.com/in-lin...-10db--240-412
FYI I met this issue when I upgraded from M3-2800 to M3a-4000, the gain went from 26 to 32, and my LCR speakers were already set at -8, I think.
I had those same (I believe, would need to check) Parts Express attenuators from a previous amp, did a manual level calibration, and now my fronts are at 0db correction.
I did purchase slightly more “high-end” attenuators ($20 or $25 instead of $10), but ended up preferring the Parts Express ones, as the sound seemed more laid back, which should indicate less distortion.

Note that I got a hum in my two subwoofers with the upgraded amp on day 1. I bought two XLR ground loop attenuators for them, which do the job fine.
This is puzzling, but there have been some issues fixed with my Comcast ground connection, so this is probably unique to my house.

Another oddity is that there is a slight hiss in my surround speakers (which shouldn’t have been affected by the upgrade) when the amp is in sleep mode, but fortunately none when the amp is turned on, which is all that matters
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post #1922 of 1970 Old 04-15-2019, 06:37 AM
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Originally Posted by bathes2051 View Post
Note that I got a hum in my two subwoofers with the upgraded amp on day 1. I bought two XLR ground loop attenuators for them, which do the job fine. This is puzzling, but there have been some issues fixed with my Comcast ground connection, so this is probably unique to my house.

That's weird that the upgrade would affect the subs. Well, it is to me anyway. I had hum too, and it was the Comcast lightning ground. Comcast (for free) regrounded at the service panel very close to where the cable comes into the home off the pole - what was your situation?


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Originally Posted by bathes2051 View Post
Another oddity is that there is a slight hiss in my surround speakers (which shouldn’t have been affected by the upgrade) when the amp is in sleep mode, but fortunately none when the amp is turned on, which is all that matters

That too, is weird.....

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post #1923 of 1970 Old 04-15-2019, 10:57 AM
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Originally Posted by Jonas2 View Post
That's weird that the upgrade would affect the subs. Well, it is to me anyway. I had hum too, and it was the Comcast lightning ground. Comcast (for free) regrounded at the service panel very close to where the cable comes into the home off the pole - what was your situation?
The ground wire inside the Comcast panel had detached.
To mitigate this (unknown) issue I was using a cable ground loop isolator, which I removed after Comcast fixed the ground.
I don't remember if the amp upgrade came before or after this, it's been a couple years. But the subwoofer hum came with the upgrade.

Update: the attenuators I kept are these: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
The ones I also tried are these: https://www.markertek.com/product/se...ttenuator-05db
Note that they're only 5dB (yes, I recalibrated the gain between them).

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post #1924 of 1970 Old 04-29-2019, 01:28 PM
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I didn't go through the whole thread but is there any D-sonic owner here who has first hand experience in comparison with ATI nCore amps? Or any other opinions?

I am looking at both amps for my future upgrade. Both companies has their own fan base but I am little concerned with only 3 yr warranty with D-sonic as compared to 7 yrs with ATI. On the other hand D-sonic does offer several more variations and combinations unlike ATI.

Thoughts? Advice?

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post #1925 of 1970 Old 04-29-2019, 05:46 PM
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Originally Posted by nonstopdoc1 View Post
I didn't go through the whole thread but is there any D-sonic owner here who has first hand experience in comparison with ATI nCore amps? Or any other opinions?

I am looking at both amps for my future upgrade. Both companies has their own fan base but I am little concerned with only 3 yr warranty with D-sonic as compared to 7 yrs with ATI. On the other hand D-sonic does offer several more variations and combinations unlike ATI.

Thoughts? Advice?
Can't give you any info on direct comparisons. ATI is certainly well-respected. These amps use two different modules, and I think they are both very good. Sure, warranty is something to consider, but if I was really worried about it, I'd be looking at Bryston with a 20 year warranty. Dennis offers a tremendous value and level of support in being a small operation, and I like that. Not saying ATI doesn't have good support, but I doubt it could be better. How often can you call a company and actually talk to the person that designs and builds what you're getting? There can be no better support specialist.

I'd imagine you'd be pleased with either choice though. IF there was no D-Sonic, I'd probably be looking at ATI. I said IF.....
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7.2.4 System: Display: Sony XBR-65X930D; Processing: Anthem AVM60
Mains:
Paradigm Prestige 85F and 55C; Side / Rear Surrounds: Totem Acoustic Tribe III / Tribe I; Amplification: D-Sonic M3a-2800-7 (7ch. x 400w)
ATMOS:
Definitive Technology DI8R; Amplification: Class D Audio SDS-470C (4ch. x 300w)
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post #1926 of 1970 Old 05-09-2019, 09:01 PM
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Aren’t there some new DSonic amps in the works? Some smaller chassis ones?

I need a four channel Atmos amp.

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post #1927 of 1970 Old 05-10-2019, 04:25 AM
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Quote:
Originally Posted by ScottieBoysName View Post
Aren’t there some new DSonic amps in the works? Some smaller chassis ones?

I need a four channel Atmos amp.
Weren’t there supposed to be 9 & 11 channel models introduced also?
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post #1928 of 1970 Old 05-10-2019, 05:27 AM
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Weren’t there supposed to be 9 & 11 channel models introduced also?


I hadn’t heard that, but that would be interesting!

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post #1929 of 1970 Old 05-10-2019, 05:31 AM
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I hadn’t heard that, but that would be interesting!
Yes, 3x600w + 6x250w and 11x250w but they're on hold until Dennis solve some issues with the manufacturer

Enviado desde mi SM-N9600 mediante Tapatalk
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post #1930 of 1970 Old 05-10-2019, 06:40 AM
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Yes, 3x600w + 6x250w and 11x250w but they're on hold until Dennis solve some issues with the manufacturer

Enviado desde mi SM-N9600 mediante Tapatalk
Is there an ETA for those amps?

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post #1931 of 1970 Old 05-10-2019, 06:48 AM
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Is there an ETA for those amps?

Sent from my SM-G950U using Tapatalk
I asked Dennis last week and this is what he told me:

Right now the new amplifier series is on hold until I settle some design issues with the module manufacturer.


This week I scored a NAD M27 for cheap and will be my first class D amp, now have Emotiva XPA-5 but would like to change to another 7 channel or more class D and was looking to D-Sonic, very very good reviews
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post #1932 of 1970 Old 05-10-2019, 02:15 PM
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Aren’t there some new DSonic amps in the works? Some smaller chassis ones?

I need a four channel Atmos amp.
You could try:

http://classdaudio.com/

Yeah, I know, D-Sonic thread, but I really like my 4-channel Class D that I use for Atmos. Less expensive, but still a quality unit, and a smaller footprint. Runs warmer than D-Sonic, some noise floor at full gain on my speakers that disappears by backing off the gains about 10-15%. Works great.

7.2.4 System: Display: Sony XBR-65X930D; Processing: Anthem AVM60
Mains:
Paradigm Prestige 85F and 55C; Side / Rear Surrounds: Totem Acoustic Tribe III / Tribe I; Amplification: D-Sonic M3a-2800-7 (7ch. x 400w)
ATMOS:
Definitive Technology DI8R; Amplification: Class D Audio SDS-470C (4ch. x 300w)
Subwoofers:
2 x SVS-SB13Ultras; Media: Oppo UDP-203, Pioneer CLD-59
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post #1933 of 1970 Old 05-10-2019, 07:03 PM
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You could try:

http://classdaudio.com/

Yeah, I know, D-Sonic thread, but I really like my 4-channel Class D that I use for Atmos. Less expensive, but still a quality unit, and a smaller footprint. Runs warmer than D-Sonic, some noise floor at full gain on my speakers that disappears by backing off the gains about 10-15%. Works great.
+1, I bought one for 7.2.4.
It really helps to have an amp I can put on a shelf along with my sources.
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post #1934 of 1970 Old 05-10-2019, 08:29 PM
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Originally Posted by Jonas2 View Post
You could try:

http://classdaudio.com/

Yeah, I know, D-Sonic thread, but I really like my 4-channel Class D that I use for Atmos. Less expensive, but still a quality unit, and a smaller footprint. Runs warmer than D-Sonic, some noise floor at full gain on my speakers that disappears by backing off the gains about 10-15%. Works great.


I actually have a bit of noise with my D-Sonic. I wish it had adjustable gain.

I still love it though.

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post #1935 of 1970 Old 05-10-2019, 09:25 PM
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Just got my 7x400W D-Sonic (was going to get the the 5-channel amp, but the "B-Stock" 7-channel was $200 more, so couldn't pass up, for future expansion) and will be installing tomorrow. Replacing 20 year old Pioneer Elite integrated amp with Marantz AV7705 pre/pro and the D-Sonic...will be a fun Saturday morning!
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post #1936 of 1970 Old 05-11-2019, 05:11 AM
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Originally Posted by ScottieBoysName View Post
Aren’t there some new DSonic amps in the works? Some smaller chassis ones?

I need a four channel Atmos amp.

Can anyone confirm if this is the case? I, too, am interested in a smaller 4-ch Atmos amp. Alternate is the classD mentioned. D-Sonic, though, is just across town from me.
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post #1937 of 1970 Old 05-11-2019, 05:38 AM
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Can anyone confirm if this is the case? I, too, am interested in a smaller 4-ch Atmos amp. Alternate is the classD mentioned. D-Sonic, though, is just across town from me.


You in southwest Houston?

I’m in north Dallas.

I’m running two Crown XLS D amps for 4 Atmos speakers now. They take up a lot of room.

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post #1938 of 1970 Old 05-11-2019, 05:39 AM
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Just got my 7x400W D-Sonic (was going to get the the 5-channel amp, but the "B-Stock" 7-channel was $200 more, so couldn't pass up, for future expansion) and will be installing tomorrow. Replacing 20 year old Pioneer Elite integrated amp with Marantz AV7705 pre/pro and the D-Sonic...will be a fun Saturday morning!


I’m running a 7704 with a D-Sonic 400x7.

Love it.
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post #1939 of 1970 Old 05-11-2019, 05:40 AM
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Originally Posted by bathes2051 View Post
+1, I bought one for 7.2.4.

It really helps to have an amp I can put on a shelf along with my sources.


It runs a little hot correct?

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post #1940 of 1970 Old 05-11-2019, 11:48 AM
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It runs a little hot correct?


Yes. Nothing on top, except an Apple TV 4K, where one area has no vents.


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post #1941 of 1970 Old 05-12-2019, 02:39 AM
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You in southwest Houston?

I’m in north Dallas.

I’m running two Crown XLS D amps for 4 Atmos speakers now. They take up a lot of room.

I'm in North Houston (just south of Spring). Office is in West Houston -- maybe 20 minutes drive to Dennis' from work.
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post #1942 of 1970 Old 05-12-2019, 04:30 AM
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I'm in North Houston (just south of Spring). Office is in West Houston -- maybe 20 minutes drive to Dennis' from work.


Gotcha. Our main office is in Greenspoint.

I like the ClassD, but I wanna see what Dennis has cooking for next time.

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post #1943 of 1970 Old 05-12-2019, 07:17 AM
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Originally Posted by audiophool View Post
Just got my 7x400W D-Sonic (was going to get the the 5-channel amp, but the "B-Stock" 7-channel was $200 more, so couldn't pass up, for future expansion) and will be installing tomorrow. Replacing 20 year old Pioneer Elite integrated amp with Marantz AV7705 pre/pro and the D-Sonic...will be a fun Saturday morning!
Look forward to hearing back on how things go!

Quote:
Originally Posted by madrac View Post
Can anyone confirm if this is the case? I, too, am interested in a smaller 4-ch Atmos amp. Alternate is the classD mentioned. D-Sonic, though, is just across town from me.
There are definitely more amps in the works from what I have understood, though I'm not sure if a 4-channel was ever mentioned? I know >7 channels for sure....being so close though, you should see if you can get a visit!

Quote:
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I like the ClassD, but I wanna see what Dennis has cooking for next time.
The other nice thing too about the Class D is that Tom is open to customizations too. I swapped red for blue LEDs (they bright though!) and the front is not silk-screened. If that kind of thing matters to you anyway.

7.2.4 System: Display: Sony XBR-65X930D; Processing: Anthem AVM60
Mains:
Paradigm Prestige 85F and 55C; Side / Rear Surrounds: Totem Acoustic Tribe III / Tribe I; Amplification: D-Sonic M3a-2800-7 (7ch. x 400w)
ATMOS:
Definitive Technology DI8R; Amplification: Class D Audio SDS-470C (4ch. x 300w)
Subwoofers:
2 x SVS-SB13Ultras; Media: Oppo UDP-203, Pioneer CLD-59
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post #1944 of 1970 Old 05-12-2019, 07:41 AM
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Look forward to hearing back on how things go!



There are definitely more amps in the works from what I have understood, though I'm not sure if a 4-channel was ever mentioned? I know >7 channels for sure....being so close though, you should see if you can get a visit!



The other nice thing too about the Class D is that Tom is open to customizations too. I swapped red for blue LEDs (they bright though!) and the front is not silk-screened. If that kind of thing matters to you anyway.


How much warmer does it run than a D-Sonic?

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post #1945 of 1970 Old 05-12-2019, 07:57 AM
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How much warmer does it run than a D-Sonic?

Well, I've never done an actual temp. reading measurement between the two, but with the hand-on-metal test, it is definitely noticeable. I would give it more vertical clearance than the D-Sonic. I'm guessing the D-Sonic, being a lot larger simply dissipates heat into the case more readily? The Class D is well-ventilated though.

7.2.4 System: Display: Sony XBR-65X930D; Processing: Anthem AVM60
Mains:
Paradigm Prestige 85F and 55C; Side / Rear Surrounds: Totem Acoustic Tribe III / Tribe I; Amplification: D-Sonic M3a-2800-7 (7ch. x 400w)
ATMOS:
Definitive Technology DI8R; Amplification: Class D Audio SDS-470C (4ch. x 300w)
Subwoofers:
2 x SVS-SB13Ultras; Media: Oppo UDP-203, Pioneer CLD-59
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post #1946 of 1970 Old 05-12-2019, 08:57 AM
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Originally Posted by Jonas2 View Post
Well, I've never done an actual temp. reading measurement between the two, but with the hand-on-metal test, it is definitely noticeable. I would give it more vertical clearance than the D-Sonic. I'm guessing the D-Sonic, being a lot larger simply dissipates heat into the case more readily? The Class D is well-ventilated though.


Gotcha. Thanks!

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post #1947 of 1970 Old 05-12-2019, 09:24 AM
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Besides some hair pulling on the trigger operation (and having to resort to reading instructions), it's up and running...and I have never owned a rig like this before. I thought my Pioneer Elite sounded pretty good, but this setup is noticeably better sounding...now the "only thing" left is purchasing 7 new speakers and a 4k TV lol.

I ran through a few of my hi-res discs last night, some 5.1, some stereo, and played a bunch of stuff from the home network, and it is truly a revelation, how much better it sounds...and I am sure some of my opinion is because I *want* it to sound better. I don't know if it is the headroom provided by a powerful amp that emphasizes dynamics, or just the higher quality of the equipment, whatever it is I like it!

And I haven't begun the room correction process yet, so maybe a slight increase even possible?

All playback was via Oppo BDP-205 with 5.1 analog out to the AV7705 and XLRs to the D-Sonic, Blue Jean cables with banana plugs to the Ascend Sierra 2.

The 7705 and the D-Sonic are in a cabinet. I installed and AC Infinity fan "system" - just two 4" fans (bottom blowing in, top blowing out) and a T-series controller (probably 25% of the back of the cabinet has been cut away as well) and while I wasn't cranking the tunes (well, a bit for short periods...trying not to irritate the other half lol), the cabinet temp never got above 88F (ambient was 78) and I was running the fans about half speed, so it seems not to be running all that hot. The only other component in the cabinet is a small Genie 2 wireless DirecTV unit which I didn't use last night...but should get a workout tonight for GoT!

(I used to have my own poorly rigged "cooling system" consisting of 4 small computer fans and also had a PS4 in the cabinet with a Dish Hopper before the DirecTV unit, and if I forgot to open the front of the cabinet when playing with the PS4, it would get very warm in the cabinet, the cooling fans on the PS4 running at what must be top speed, "screaming"...which was in effect my "high temp" alarm)

Main: Marantz AV7705, D-Sonic M3a-2800-7, Oppo BDP-105D, Sony UBP-X700, DirecTV, LG C8 OLED TV; L/R: Ascend Sierria 2s; C/SL/SR/SW: older Energy series speakers (EC-200/RVSSx2/ES-12)
Headphone Only: Desktop-->Teac UD-301 DAC -->Schiit Mjolinir Amp-->Sennheiser HD800
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post #1948 of 1970 Old 05-12-2019, 09:31 AM
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Originally Posted by audiophool View Post
All playback was via Oppo BDP-205...
That's a BDP-105...just my Freudian slip, still not happy with myself that I didn't get the UDP-205 when they were available...

Main: Marantz AV7705, D-Sonic M3a-2800-7, Oppo BDP-105D, Sony UBP-X700, DirecTV, LG C8 OLED TV; L/R: Ascend Sierria 2s; C/SL/SR/SW: older Energy series speakers (EC-200/RVSSx2/ES-12)
Headphone Only: Desktop-->Teac UD-301 DAC -->Schiit Mjolinir Amp-->Sennheiser HD800
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post #1949 of 1970 Old 05-12-2019, 12:17 PM
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Besides some hair pulling on the trigger operation (and having to resort to reading instructions), it's up and running...and I have never owned a rig like this before. I thought my Pioneer Elite sounded pretty good, but this setup is noticeably better sounding...now the "only thing" left is purchasing 7 new speakers and a 4k TV lol.

I ran through a few of my hi-res discs last night, some 5.1, some stereo, and played a bunch of stuff from the home network, and it is truly a revelation, how much better it sounds...and I am sure some of my opinion is because I *want* it to sound better. I don't know if it is the headroom provided by a powerful amp that emphasizes dynamics, or just the higher quality of the equipment, whatever it is I like it!

And I haven't begun the room correction process yet, so maybe a slight increase even possible?

Sure, some of it could be expectation bias, but the Marantz/D-Sonic combo should do you quite nicely, and yes - it is possible to sound even better with the room EQ if you need it! You'll just have to try it out. Some do prefer none, but my guess is some of them have some decent rooms to start with and/or room treatments. My room is terrible, so it's very obvious.


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Originally Posted by audiophool View Post
That's a BDP-105...just my Freudian slip, still not happy with myself that I didn't get the UDP-205 when they were available...

Your sig. says 205....

7.2.4 System: Display: Sony XBR-65X930D; Processing: Anthem AVM60
Mains:
Paradigm Prestige 85F and 55C; Side / Rear Surrounds: Totem Acoustic Tribe III / Tribe I; Amplification: D-Sonic M3a-2800-7 (7ch. x 400w)
ATMOS:
Definitive Technology DI8R; Amplification: Class D Audio SDS-470C (4ch. x 300w)
Subwoofers:
2 x SVS-SB13Ultras; Media: Oppo UDP-203, Pioneer CLD-59
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post #1950 of 1970 Old 05-14-2019, 04:23 PM
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Gotcha. Our main office is in Greenspoint.

I like the ClassD, but I wanna see what Dennis has cooking for next time.
Affectionately known as Gunspoint around here :-). But some good bars near by!
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