D-Sonic custom Audio amps - Page 47 - AVS Forum | Home Theater Discussions And Reviews

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post #1381 of 1404 Old 05-19-2016, 08:47 PM
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^^^ Yes, good point, especially since SMPS' tend to kick HF noise back into the line if not well designed. I would use the power conditioner on the source and other low-level components, leaving the power amp plugged directly into the wall. That way the low-level things are isolated and the conditioner is not limiting current into the power amp.

"After silence, that which best expresses the inexpressible, is music" - Aldous Huxley
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post #1382 of 1404 Old 05-20-2016, 02:55 PM
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The only thing I can say, and I don't know how useful this will really be, but my amp is on it's own 20A circuit - but FWIW - shares the ground from an adjacent 15A circuit that has EVERYTHING else on it. This circuit was previously ungrounded, and when the electrician was installing the 20A, he shunted through the wall stud and grounded the 15A in this manner. There is ZERO hum, noise, or buzz generated in my system in this config. The 15A circuit has a Panamax 5400 hosting the cable box, TV, LD Player, BD Player, Pre-Pro, and a set of cooling fans for the AV cabinet. Everything seems to play nicely together.
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post #1383 of 1404 Old 06-22-2016, 08:20 AM
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I sent an e-mail off to Dennis, but did not get a reply. I'll post my questions here.


Can someone confirm the specs on the M3-2000-5?

Is this using (5) Pascal 400 watt / 8 ohm - 800 watt / 4ohm amplifier modules?

What is the size of the power supply in this amplifier? I'm not too familiar with the multi-channel designs. I assume all channels share one common supply?

How much power can this unit supply with all channels driven simultaneously?

What's new coming from D-Sonic? Any new modules/models or changes planned for 2016?

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FS: Crown CT 4150 4 Channel Amplifier

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post #1384 of 1404 Old 06-22-2016, 09:25 AM
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Quote:
Originally Posted by dwaleke View Post
I sent an e-mail off to Dennis, but did not get a reply. I'll post my questions here.


Can someone confirm the specs on the M3-2000-5?

Is this using (5) Pascal 400 watt / 8 ohm - 800 watt / 4ohm amplifier modules?

What is the size of the power supply in this amplifier? I'm not too familiar with the multi-channel designs. I assume all channels share one common supply?

How much power can this unit supply with all channels driven simultaneously?

What's new coming from D-Sonic? Any new modules/models or changes planned for 2016?
That's interesting, I have never NOT received a reply from Dennis via email, he's typically very fast! Yes - these are Pascal modules and as far as I know, there is one common power supply and the unit delivers all power to all channels simultaneously - 400 watts per channel, not just with 2 channels driven, etc. Don't know what changes are on the horizon, that's a Dennis question, and I would confirm with him anyway all of the answers I've given you.
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post #1385 of 1404 Old 06-22-2016, 09:39 AM
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Originally Posted by Jonas2 View Post
There is ZERO hum, noise, or buzz generated in my system in this config. The 15A circuit has a Panamax 5400 hosting the cable box, TV, LD Player, BD Player, Pre-Pro, and a set of cooling fans for the AV cabinet. Everything seems to play nicely together.
In in an effort to be totally fair in my statements, and if anybody has been following my other posts, the ZERO hum/buzz thing is no longer true - BUT - this is no fault of the amp. It turned out that once I brought HDMI into the picture with my pre-pro (I had not initially had this set up), a 60Hz hum was in fact created. Again, no fault of the components, this has been traced back to the ground wire on the cable TV splitter before entry into the house.

There is also an annoying buzz unrelated to the 60Hz hum that is now occurring in my speakers that was not there initially - still working to track this down, but again - not the amp. Dennis actually sent me a replacement just in case it was the amp. NOPE. Also was able to procure a different brand/type amp to try in my system, same problem. So, it ain't amps! The search continues.

What I really do like though about the D-Sonic amp is the footprint and overall dimension - such a perfect fit for my situation, and it is good looking unit, obviously of solid build. Simple, which is what it should be. The space saving factor (height) and less heat than A/B designs was really critical to my setup as it is totally enclosed in my AV cabinet.
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post #1386 of 1404 Old 06-22-2016, 12:46 PM
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Quote:
Originally Posted by Jonas2 View Post
That's interesting, I have never NOT received a reply from Dennis via email, he's typically very fast! Yes - these are Pascal modules and as far as I know, there is one common power supply and the unit delivers all power to all channels simultaneously - 400 watts per channel, not just with 2 channels driven, etc. Don't know what changes are on the horizon, that's a Dennis question, and I would confirm with him anyway all of the answers I've given you.
D Waleke,

Jonas2 has answered your questions quite well.

Each channel does have its own separate power supply.

I have no record of receiving an email from you. Did you send it through the website email default?

Regards,

Dennis
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post #1387 of 1404 Old 06-22-2016, 04:14 PM
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Dennis - I just sent you a PM.

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FS: Crown CT 4150 4 Channel Amplifier

JTR 215RT/RM - SI HT D2 18" - Volt 10lx - AV7703 - XPA-7 G3 - FP10000Q - 65KS8000 - UBD-K8500 - HTPC/Jriver/Kodi/MadVR - Chromecast Ultra - XBox One S - Nvidia Shield TV - Roku Ultra
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post #1388 of 1404 Old 06-25-2016, 06:38 PM
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Dennis - I just sent you a PM.
Did you hear back from Dennis?
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post #1389 of 1404 Old 06-25-2016, 06:48 PM
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Yes. I e-mailed him at the address posted a page or two back and he replied.

Classifieds:
FS: Crown CT 4150 4 Channel Amplifier

JTR 215RT/RM - SI HT D2 18" - Volt 10lx - AV7703 - XPA-7 G3 - FP10000Q - 65KS8000 - UBD-K8500 - HTPC/Jriver/Kodi/MadVR - Chromecast Ultra - XBox One S - Nvidia Shield TV - Roku Ultra
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post #1390 of 1404 Old 06-25-2016, 06:57 PM
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Yes. I e-mailed him at the address posted a page or two back and he replied.
Are you thinking about trying one out?
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post #1391 of 1404 Old 06-25-2016, 08:01 PM
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I am. I'm on the fence between this and the NuPrime MCH-K38.

I originally ordered an Emotiva XPA 3rd Gen amplifier. But after almost 2 months of waiting I cancelled the order.

And every time the Monolith goes on sale that tempts me as well.

If I had power hungry speakers I'd go for the D-sonic without question.

Classifieds:
FS: Crown CT 4150 4 Channel Amplifier

JTR 215RT/RM - SI HT D2 18" - Volt 10lx - AV7703 - XPA-7 G3 - FP10000Q - 65KS8000 - UBD-K8500 - HTPC/Jriver/Kodi/MadVR - Chromecast Ultra - XBox One S - Nvidia Shield TV - Roku Ultra
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post #1392 of 1404 Old 08-30-2016, 04:09 PM
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low volume performance

Hello, I'm considering a 7 channel amp from D-sonic. One question I haven't seen addressed and am curious about is lower volume listening. Obviously these amps are very powerful but I wonder do they move speakers well at low volumes also? I've heard amps that don't bring speakers alive without turning up the volume and others that still manage to create dynamic sound even at low volumes. Thanks.

Last edited by bayareakirk; 09-01-2016 at 11:46 AM. Reason: hadn't meant to quote someone, so deleted
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post #1393 of 1404 Old 08-30-2016, 04:29 PM
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Originally Posted by bayareakirk View Post
Hello, I'm considering a 7 channel amp from D-sonic. One question I haven't seen addressed and am curious about is lower volume listening. Obviously these amps are very powerful but I wonder do they move speakers well at low volumes also? I've heard amps that don't bring speakers alive without turning up the volume and others that still manage to create dynamic sound even at low volumes. Thanks.
I guess it depends on what you consider low volume? I think the amp does well with my speakers at low volume (Paradigm Prestige line) for both music as well as HT, though I've only got 3 channels at the moment, and I've got nothing to compare against as far as other amps go, so YMMV!
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post #1394 of 1404 Old 08-30-2016, 06:15 PM
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Originally Posted by bayareakirk View Post
Hello, I'm considering a 7 channel amp from D-sonic. One question I haven't seen addressed and am curious about is lower volume listening. Obviously these amps are very powerful but I wonder do they move speakers well at low volumes also? I've heard amps that don't bring speakers alive without turning up the volume and others that still manage to create dynamic sound even at low volumes. Thanks.
Great question!

High power is typically equated with an ability to blow the glass out of windows.

And while its true that a higher power amp can theoretically play at marginally higher sound pressure levels, its real strength is found in linearity.

While somewhat counterintuitive, wattage is far more effective with linear frequency response than it is with ear shattering sound pressure levels.

I find my "massively overpowered" D-Sonic amp to outshine its lesser powered predecessors. particularly at nominal volume levels.
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post #1395 of 1404 Old 09-01-2016, 11:48 AM
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Great question!

High power is typically equated with an ability to blow the glass out of windows.

And while its true that a higher power amp can theoretically play at marginally higher sound pressure levels, its real strength is found in linearity.

While somewhat counterintuitive, wattage is far more effective with linear frequency response than it is with ear shattering sound pressure levels.

I find my "massively overpowered" D-Sonic amp to outshine its lesser powered predecessors. particularly at nominal volume levels.
Thanks for the low volume replies. It's good to know the D-sonic should have linear performance at different volumes.
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post #1396 of 1404 Old 09-02-2016, 07:03 AM
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I listen to my setup at low volumes all the time and there is no issue there. For what it's worth when I first purchased my D-Sonic amp I compared them to the NAD M22 amps which are based on the Hypex modules. I put the M22 on sale on ebay. The D-Sonic was more powerful and smoother sounding. They are legit.
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post #1397 of 1404 Old 09-02-2016, 08:42 AM
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Originally Posted by bayareakirk View Post
Hello, I'm considering a 7 channel amp from D-sonic. One question I haven't seen addressed and am curious about is lower volume listening. Obviously these amps are very powerful but I wonder do they move speakers well at low volumes also? I've heard amps that don't bring speakers alive without turning up the volume and others that still manage to create dynamic sound even at low volumes. Thanks.
I currently have a 7 channel D-Sonic driving 4ohm speaker loads. It will do everything you need it to do. I have kids and mostly netowrk tv watching at lower levels. No problem. when i want to watch a movie at reference levels, also no problem. Im very happy with my choice. My amp before the D-Sonic was a Krell. Dont miss it much.

The only other amp i would look at right now is the newly announced ATI N-Core amps

7.2 with Thiel Power Points, twin Seaton Submersive F2's in Espresso. D-Sonic Amp, Marantz Pre-Pro, Richard Grey Power, Control 4 Home Automation, lots of Blue Jean Cables, Oppo 103D, QNAP 423, Roku, Darbee, Samsung Plasma 64" 8500 all in a Salamander Synergy 247 in Walnut.
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post #1398 of 1404 Old 11-02-2016, 02:34 PM
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Back from the dead for my tale of woe.

I have Paradigm Studios for my speakers and a Sub 1. I had my Marantz AV8801 hooked to 2 Rotel RMB-1095's for my 9.1 system. Been happy with it for several years. I recently put the amps on a dedicated 20 amp circuit and was surprised at the sound improvement. Noticeable. I did not expect that. Just did it on a lark. Of course that got me to thinking about different amps. Researched a lot. Short list was Anthem A5, Parasound Halo A51, Classe Sigma AMP5, and Rotels offering. Don't remember the thread I was in but they mentioned buying D-Sonic and loving it. Started looking at class D amps. Settled on D-Sonic basically just from word of mouth/forum. Talked to Dennis a few times, got the M3-2800-7 (7 channel 400w) and put everything but the heights on it. The heights I kept on one RMB-1095. The word clearer comes to mind. The speakers on the M3 were clearer than when on the RMB-1095. Did Audyssey XT32 Friday night last week, watched a couple hours of TV Saturday, then rented movies to give my system a workout Sunday. At the 1 hour 30 minute point there was a loud crackle from my speakers, a flash of light from inside the M3, and an electrical smell in the air. Being a Master of the Obvious I immediately knew something was wrong. I had lost the center, surround back left, and back left channels. Even though it was 830pm on a Sunday in Ohio I called Dennis who made me feel very special by telling me that is the first time he's heard that happening. I'd rather be first at other things though. My bad unit and a new one are currently passing each other somewhere, and I should get the new unit tomorrow.

I don't want anyone to think I'm writing this to warn people away from D-Sonic. Quite the opposite. All equipment has the potential to fail, and it is what happens when that does that can make or break a company. As stated in other parts of this thread, Dennis makes himself available to answer all kinds of questions and has good customer service. And he has a good product that I can't wait to get back in my system tomorrow.

If I find out what went wrong I will post here again.
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post #1399 of 1404 Old 11-02-2016, 03:09 PM
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I don't want anyone to think I'm writing this to warn people away from D-Sonic. Quite the opposite. All equipment has the potential to fail, and it is what happens when that does that can make or break a company. As stated in other parts of this thread, Dennis makes himself available to answer all kinds of questions and has good customer service. And he has a good product that I can't wait to get back in my system tomorrow.

If I find out what went wrong I will post here again.
Second that! I've never had an issue getting a hold of Dennis, even on Sundays he has answered my emails, and really, questions that could have waited. Kudos! Very pleased with my amp (I have the same one as you). And yes, anything can be faulty no matter the implied quality or cost.
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post #1400 of 1404 Old 11-06-2016, 11:55 AM
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Received the replacement 3M-2800-7 amp Thursday. Watched 2 movies and 5 hours of TV with nothing shorting out so that is good. Non-audiophile person watching a movie Friday night noticed "something was better" with the sound. I think it is just a bit clearer than my Rotel RMB-1095's were. Getting a Marantz AV8802A Tuesday to replace my AV8801. Interested if that will make any audible difference.
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post #1401 of 1404 Old 11-06-2016, 02:51 PM
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Received the replacement 3M-2800-7 amp Thursday. Watched 2 movies and 5 hours of TV with nothing shorting out so that is good. Non-audiophile person watching a movie Friday night noticed "something was better" with the sound. I think it is just a bit clearer than my Rotel RMB-1095's were. Getting a Marantz AV8802A Tuesday to replace my AV8801. Interested if that will make any audible difference.
Good to hear (no pun intended...)! Interested to see what you discover with the 8802A.
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post #1402 of 1404 Old 11-07-2016, 12:29 PM
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Received the replacement 3M-2800-7 amp Thursday. Watched 2 movies and 5 hours of TV with nothing shorting out so that is good. Non-audiophile person watching a movie Friday night noticed "something was better" with the sound. I think it is just a bit clearer than my Rotel RMB-1095's were. Getting a Marantz AV8802A Tuesday to replace my AV8801. Interested if that will make any audible difference.
I think you will find an audible difference.I went from a SR7010 to a AV8802A and it was noticeable. The DAC is legit.
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post #1403 of 1404 Old 11-09-2016, 04:08 PM
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I think you will find an audible difference.I went from a SR7010 to a AV8802A and it was noticeable. The DAC is legit.
I've listened to about 3 hours of TV and watched 2 Blurays. It sounds to same to me. I never listen to music on it, and from what I've read that is where an improvement can be had. I bought it for it's ability for DTS:X and Atmos down the road as I currently have a 9.1 system. No ceiling speakers yet.
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post #1404 of 1404 Old 11-11-2016, 08:35 AM
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I've listened to about 3 hours of TV and watched 2 Blurays. It sounds to same to me. I never listen to music on it, and from what I've read that is where an improvement can be had. I bought it for it's ability for DTS:X and Atmos down the road as I currently have a 9.1 system. No ceiling speakers yet.
Sorry should have mentioned I was using stereo when comparing. I did not have my multiple channels set up during that time to compare.
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