Lyngdorf TDAI 3400

[flashman]

Glad you are enjoying your 3400. I had one once, replacing a Devialet Expert 220 Pro. I found the 3400 thin in the bass department, however, and eventually sold it. My digital front-end is the same as your previous system: Lumin X1 and Lumin L2. My amplifier is a Kinki EX-M7. I love it. That’s why our hobby is so intriguing: you’ve found the 3400 better suited to your preferences and I feel the same about my system. Happy Holidays!

 

[tmallin]

The 3400 "thin in the bass department"? You did not specify your speakers. so I don't know if perhaps this is a speaker thinness issue. But if anyone finds the Lyngdorf sounding thin in the bass, you can use the Voicings or the bass/treble controls to correct this. Unlike most modern preamps or amps (including your Kinki) the Lyngdorf has both traditional tone controls and DSP room/speaker correction via its parametrically constructed stock or custom user Voicings.

And unlike most amps (including your Kinki), the Lyngdorf doubles down its power from 8 ohm to 4 ohm loads, indicating it has plenty of power supply oomph for bass. The Lyngdorf also has 40 amps of maximum output current, far more than the 18 amps specified for the Kinki, again indicating its ability to drive speaker loads fabulously throughout the entire frequency spectrum, especially the current-demanding bass regions.

 

[flashman]

My speakers are Vivid B1 Decade. I’m not debating your experience with the Lyngdorf, only my experience with the unit. I’ve followed your previous posts about the Lumin X1, so I know that you are quite exhaustive (not a pejorative) in your analysis. At the end of the day, system dependencies vary greatly so I’m not surprised at your or my evolution. Enjoy!

 

[RC22]

So great to have found this discussion. Like you, I also had a 2170 before getting the 3400 in mid 2022. I had the 2170 for five years before that.

I absolutely LOVE the 3400. I’ve had the sense that its more powerful digital engine does a better job of room correction, but I had nothing specific to point to as you have. A Lyngdorf deaeler I know thinks it does as well.

I’d like to ensure I understand how you run RP. I get that you keep the mic pointing between the speakers after doing the focus position instead of aiming it randomly around the room as Lyngdorf recommended forever, but are also saying you leave the mic right there at the focus position for subsequent room readings and just keep reading the room from the same spot as the focus? I’m happy to try it, but it’s counterintuitive to say the least. Heck, I never get 100% knowledge in less than 6 readings not counting focus. And I almost always get no add’l knowledge added even after moving the mic at least one time in the process. So, I ask rhetorically—unless you can actually answer, how does it add knowledge by reading the room from the same spot over and over? And in only three readings, post focus? Unless they have changed the software to do so recently. I just did the latest to 3.4. Lastly, since I will likely be doing this soon, why do you run add’l readings after you’ve hit 100%?

In fact, I always found it weird that the first reading always gives 55% knowledge and the second one always goes to 69%, but subsequent ones vary. No matter where the mic is plasced for one and two and in two different rooms I’ve used.

Do make sure your voltage switch in the back under the decal is set to 110 not 220. Mine was set to 220 but it played so I was none the wiser. But the PS does not operate optimally. DO NOT change the setting with it powered on. I would unplug it, in fact.

I also am utterly spoiled at the precision of the volume conrol. .1db increments? I’m in heaven.

FWIW, the LF performance is outstanding in my rig. Streaming is my only source. Qobuz and an Innuos Pulsar.

BTW, I had the 3400 modified significantly last July. Having modded the 2170 before it, I knew Lyngdorf TDAI’s could be made to sound even better for reasonable money. The modder discovered the voltage switch set to 220v.

 

[tmallin]

Yes, I didn't touch the mike at all once I set it up at the listening position. I just ran successive iterations of the test signal without moving anything. I don't remember the confidence level shown after the first or second sequence, but certainly it showed 100% after a total of three and I ran one more for good measure. I "tricked" Room Perfect since each time it ran the tone sequence the microphone obviously heard exactly the same result. As I said, even my body was absent from the room during the calibration so even different body positions were eliminated from what the microphone heard.

I agree that owners should check that the voltage is set correctly. My new unit was set correctly when I received it. The second unit I purchased was a used one and it was set incorrectly for 220 even though I strongly suspect the unit was last used in the United States--at least that is where the package originated from and where the seller was employed and had a residence.

My theory about Room Perfect is that if you always listen from the same spot and you are not setting up for multiple listeners/listening positions, all that matters is the sound at the sweet spot. The sound at the sweet spot is therefore what you want RP to optimize, not sound at other positions in the room. This is especially true for a room like mine where the walls are treated with absorbing acoustical foam in areas around where first reflections would be heard from the sole listening position and aiming the microphone in random ways will inevitable have the microphone facing either foam-covered walls or non-foam-covered areas, fooling the microphone about the room's mid and high frequency response.

Previously, with my TDAI-2170, I never had problems with RP's low frequency correction. It always seemed to introduce a peak in response centered around 4 kHz, which sounded considerably too bright. Now, with this "trick" RP calibration, RP's correction sounds wonderfully smooth.

Of course, as they say, YMMV--your mileage may vary. What works in my room to my ears may not work for you. I detailed my "trick" RP set up on the chance that others also may find that this sort of calibration scheme works better for them.

 

[tmallin]

In my opinion, there is no reason to buy a separate streamer if you own the Lyngdorf TDAI-3400. It's streaming is of equivalent quality to even the fiber-optic connected top Lumin X1/L2 set up feeding a pair of Benchmark AHB2 monoblock amps I had before in my streaming-only system. When I dropped the 3400 into the system replacing those components and adding the fiber optic GigaFOILv4 Inline ethernet filter, I heard equivalent streaming quality.

For Qobuz, while we await the still-coming Qobuz Connect, the MConnect app for $6 provides very fine sounding results from the 3400, much better than running the Qobuz app via AirPlay and marginally better than the sound of Qobuz through Roon.

Roon has made sonic improvements across the board lately. If you not using its Muse DSP filters, be sure to remove all the filters you can, don't just deactivate them. This will gain you at least further subtle sonic improvements.

 

[RC22]

Thanks for the nice replay, Tom. I am glad you shared the new approach to mic placement. I’ll let you know how it goes.

I also purchased my unit from a guy locally purchased it new. Box label shows it shipped from Denmark to US. What a coincidence we had the same experience with that.

I always wondered about the roll of my body in the room. I will try using the remote from outside my door. Otherwise, I used to either sit on the floor behind my seat or crunch down in my seat below the focus mic and them sit in my seat for the rest. I figured my body is in the seat while playing music, so….

I used to have a Muon internet filter by Network Acoustics and ended up determining it was not helpful after making some other changes in the rig. I’’ll look into the GigaFoil you use, though.

 

[RC22]

Also, I’ve wanted to hear those Watkins speakers.

 

[tmallin]

Additional Lyndorf Voicings

After you set your system's "foundation EQ" by running Room Perfect, you can use the Voicings function of the Lyngdorf TDAI-3400 to manipulate the frequency response of individual programs to make them more realistic or agreeable to your ears and sensibilities. The stock Voicings which come already available with the Lyngdorf software are indeed helpful in this endeavor. For a text and graphical description of these voicings, download and review the file available at this link.

Here are a few other Voicings you may find useful and instructions for how to construct them using the Setup>Voicing setup>Add new voicing function from the menu.

You may want to create a new Voicing patterned after what DSPeaker recommended as a presence range dip. In the instruction manual for its Dual Core equalizer, DSPeaker recommended a parametric filter of Q = 2 centered at 3kHz with a dip of 4.2 dB.

The Lyngdorf Music Voicing is this except the dip is only 3 dB. You can create a new Voicing, call it Music 2 or whatever. (The other stock Music voicing has a different dip: Q of 0.8 and center of 2900 Hz, amplitude minus 2.5 dB.) I think you'll find this new 4.2 dB dip quite useful.

Also, the stock Soft Voicing is very subtle. It is patterned after the Quad preamp's "Tilt" control (also found on the Audient ASP231 analog graphic equalizer I once owned) and hinges response around a midrange frequency, boosting the bass and lowering the treble a bit overall for a gentle smooth slope down from bottom bass to top treble.

The Soft Voicing uses the first three filters, each set for high shelf, at Q = 0.1, amplitude at minus 0.5. The first filter is set to 20 Hz, the second to 200 Hz, and the third to 2000 Hz.

To make the tilt greater, I have created Soft 2, 3, 4, and 5. Each one follows the Soft Voicing pattern but increases the amplitude by another minus 0.5 dB so that Soft 5 gets to each filter set to minus 3.0 dB.

To keep the overall system SPL about the same, you can add some overall gain to the higher order Soft Voicings. For example, I added +3 dB overall gain for Soft 3 and +4 dB overall gain for Soft 5.

You might find these additional Soft Voicings useful for overly bright recordings.

 

[RC22]

Tom,

I just ran Room Perfect by leaving the mic in the focus position for all readings as you suggested and it worked out great. Much easier and faster than moving the mic around 5-8 times and maybe only getting to 96%. Gotta tell you though, I did the focus and then got to100% knowledge on the first reading. I did two more readings anyway as you suggested. I stood outside my room and controlled everything on the Lyngdorf app on my phone. I use the app to set up my subwoofer, but had not used it for RP before. I liked it.

The app is fantastic. Check it out if you’ve not yet.

I cannot say if there is a SQ difference between the traditional method and this method of running RP because I changed so much in my room this week that the legacy RP was not relevant anymore. I’d been evaluating changes to my set-up changes on bypass.

Rick

 

[RC22]

Tom, I wonder if you know Lyngdorf wants us to interpret the room correction percentage figure? When you press the “status” icon on the unit’s faceplate display, a room correction % is given along with the number of readings you took and the % of room knowledge.

I have guesses but that’s all they are. I will say that over 7 years of running RP on the 2170 and the 3400 I can recall getting as low as 12% and as high as mid 32% or so.

Thank you,

Rick