Panelhead

Psychomed radio is GONE. They had six streams running, all at 320 k. Great music selection. I noticed it a month ago, hoped it was technical issue. Guess it was a financial issue.

Back when I had Altec horns, my nearest neighbor was at least 500’ away. She called at 2:00 am demanding to “TURN IT DOWN. Said her kids were crying. That was with a lowly Carver Cube. Early 80’s. Today I am sure one of those headphone amps or a 45 tube amp would be plenty loud. Seems that 1 watt gets plenty loud. The MyAmps surprised me. Purchased one because I always like Micromega products. And Accesories4Less was closing them out at 229.000 USD. Matched up so good with LS II that I ordered a couple more. Tried stereo connection, balanced bridged, currently passive biamp. They are easy to integrate into system with active subs.

I asked Dave about an Eliptrac 400 a few months ago and he had at least one pair. Could not bring myself to butcher the La Scala top hat to mount. DaveA, what is the machine time running on these masterpieces?

Please do not laugh. But try 2 Micromega MyAmp integrated amplifiers. Only issue for me is they only have RCA inputs. Doubt if the bass bin needs more than 60 watts. If you do, that is shakin’.

Since you are in Germany, look at Sommer Cable SC- Club Red Zilk and Club Black Zilk. Neither is available in the US. Both are excellent and less than a dollar/ft.

I need to look hard at your comments on polar reflections. My system must have this issue. Speakers are in a loft with 3/4 hardwood over 5/4 decking. And there are flat 8’ sheetrock ceiling over speakers and listening position. The reflections from both should be strong. I have REW, but only used it to run sweeps on electronics. Never graduated to the big boy capabilities.

What are you using for a computer? I have a 8 year old Mac Mini. Using the Thunderbolt port to connect to a Focusrite Clarett. There are Corning optical TB cables that are not length limited. I use a 10 meter cable. But have a 30 meter that works just as well. Dug an old dac out that has DRC to try with the LS II. It is FireWire connected. So 5 meters max like USB. Actually DAC works better with 2 meters or less. Running 10 meter analog cables to reach the amps. Have used single ended and balanced. Both work fine. So you can run a long pair of cables from a dac to your tube preamp. Have not tried streaming, but am sure it works very well. Just seems complicated.

Build up a NUC two years ago. For this. But was running a dac with Thunderbolt. Went with an optical TB cable to get isolation. But looking at Qobuz. May resurrect the NUC. Using four channel dacs, current has Room Perfect DRC but a FireWire buss. Got to move forward into 2020.

My recommendation is the Lyngdorf TDIA-1120. Does EVERYTHING.

If they sound good and all drivers are working offer 350.00. Split the difference. I would shoot semi-gloss grey.

Too bad you are so far. I have a cherry pair of H III in Cherry. Maybe a 100 hours. Liked them so much I bought LS II’s. Been boxed in closet since.

One great option is the H IV. Deeper bass than a La Scala, still efficient, and small.

La Scala is always a good choice. It is hard to beat them. Add a sub too. 3,000.00 should cover a pair of La Scala’s And a sub or two. Many play in a room close to yours. But LS are 2’ x 2’. Figure a foot off the wall and they are 3’ into the room. If your ears are 2’ off the wall behind it is 5’ from the speakers. I think that is why Klipsch made Belles. Firing longwise is an option. Even placed in the corners and toed in, less than 5’ between the speakers.

Chris, Your knowledge and input is impressive. Looking at the peak around 70 Hz, it is clear there is either boundary or other reinforcement. Now.

I am using Room Perfect DRC to do correction on LS II. The effect is very positive. Previous home speakers were all changed. Just it is more obvious on the LS. But it makes small amplitude and phase corrections. Not 18 dB. Once above 500 Hz your clone looks very good to above 10 kHz. . The high end is rolling at what looks like 12K. Is that tweeter or measurement related?

Try moving the speaker. Also raise it to see if the low ceiling is affecting it. EQ can flatten the 160 Hz peak and the 200 -500 Hz dip. Some feel bass bin flex creates the 140 Hz peak. What did you use to construct the bass bins? I doubt this, it would be output level driven. Seems the peak is common at all levels.

Sounds like you are bidding against yourself. Try a 100.00 and see what happens.

A U-Haul trailer should work. Wrap and strap. A cargo van might be even better. Or if weather is nice, a pickup and tarp, get a few furniture pads or heavy blankets. Getting a pair of B&W 801 Matrix II in a Suburban was tight. And my La Scala’s are larger than the B&W speakers.

Stereiphile reviewed the 4500.00 Terminator and the 800.00 Aries II. Both delivered State of the Art resolution. Measured the same. 22 bit resolution, dCS stack, Mola Mola, Dave, other extreme high dollar units can barely match the Aires II. I had my doubts, most R2R do not match 100.00 delta sigma dacs. The May and Denafrips exceed delta sigma. Think they utilize a FPGA to correct errors. Alvin Chee is super nice also. He said these were as good as any dac available. The Stereophile tests confirm it. They have a couple amplifiers that have AHB2 range specs. Alvin said each one is tested on an AP before shipping.

You will be busier than Santa and his elves in December.

Think these will keep your CNC running non-stop. A drop in K400 has thousands of potential customers.

The 22 mV bias is measured the voltage drop across a resistor. If the voltage is measured from a test point to ground, the resistance can be measured with the amp unpowered. Test point to ground. Divide the 0.022 volts by the resistance to get current. As Henry said, if it runs hot, the current can be brought down. But that 22 mV bias was chosen for a reason.

I had a 1980 vintage Sansui that ran hot. Think biasing well into Class A was popular. How much current is running through the output stage?

Pics can be misleading. The two voltage regs look damaged to me. They are next to L100.

Ward, Which model, watts, did you build? I am sure they are works of art.