Bubo

I believe your comment is correct Live amphitheater performances amplified were in mono to my memory I attended a lot of them, Merriweather Post Pavilion, Columbia MD Studio recordings, done properly, can reproduce the sound of an in person acoustic performance Multi track live recordings, can be mastered in the studio to achieve nearly the same effect of physical placement

My McIntosh c-32 always sounds and feels like it was engineered for vinyl records where it does a superb job Built in Dynamic range expander and EQ

They sound great with any quality amplifier I too love Yamaha' which is why I have so many of them Find a used Yamaha surround 5.1 amplifier that supports pure direct Good ones sell for as little as $100 US Be sure to get a working remote control You don't need HDMI, if it has it fine. Try to get 10 years old or less Look at the specs, THD, SN Watts is unimportant, 100 WPC on the front is more than enough Amp also has a good built in DAC The amp will also support a sub woofer, and may have room correction

What is quantization error and how does signal to noise relate to this? Question : What is quantization error and how does signal to noise relate to this? Answer : Quantization error is the difference between the analog signal and the closest available digital value at each sampling instant from the A/D converter. Quantization error also introduces noise, called quantization noise, to the sample signal. The higher the resolution of the A/D converter, the lower the quantization error and the smaller the quantization noise. The relationship between resolution (in bits) and quantization noise for an ideal A/D converter can be expressed as Signal to Noise (S/N) = -20*log (1/2^n) where n is the resolution of the A/D converter in bits. S/N is the signal to noise and is expressed in dB. This relationship can also be approximated as S/N = 6*n. Typical S/N ratios for ideal A/D converters are 96dB for 16 bits, 72dB for 12 bits, and 48dB for 8 bits. https://www.tek.com/en/support/faqs/what-quantization-error-and-how-does-signal-noise-relate Good explanation of how a DAC works The phono GANFet in the Panasonic above is an A-D converter note the saw tooth diagrams https://www.tek.com/en/blog/tutorial-digital-analog-conversion-r-2r-dac What are aliasing errors? Are they hard to detect? Answer : An alias is a false lower frequency component that appears in sampled data acquired at too low a sampling rate. Aliasing errors occur when components of a signal are above the Nyquist frequency (Nyquist theory states that the sampling frequency must be at least two times the highest frequency component of the signal) or one half the sample rate. For example, if you are acquiring data from eight channels at 100k samples/second, the sampling rate for one channel is 100 ksamples/second * 8, or 12.5 ksamples/second. In this case, any signal component with a frequency above 6.25 kHz will cause aliasing errors. Aliasing errors are hard to detect and almost impossible to remove using software. The solution is to use a high enough sampling rate, or if this is not possible, to use an anti-aliasing filter in front of the analog-to-digital converter (ADC) to eliminate the high frequency components before they get into the data acquisition system. My comment: CD eliminates everything above 20Khz If you can't hear it, does it need to be there amp designs that can't handle high freqs have TIM distortion Something about Nature, it all works together in a unified system

As the chip set production ramps up the cost per watt should begin to fall Especially if RIAA GAN chip sets etc hit the market Low end systems will be 4-5 chip sets with mfg firmware mounted on a PCB like the low cost Class T, D products we see now

Selling my G-4700 $600 cash, may do paypal for a forum member May ship for a forum member Sansui G-4700 Receiver Just restored at Deltronics in Woodridge New capacitors and parts, and radio calibrated Deltronics will honor transferable warranty until Sept 3, 2022 Minor blemish on top, and one graumet for a case screw is missing both visible in photos Sansui G-4700 AM/FM Stereo Receiver (1979-80) Tuning range: FM, MW Power output: 50 watts per channel into 8Ω (stereo) Frequency response: 10Hz to 70kHz Total harmonic distortion: 0.05% Damping factor: 30 Input sensitivity: 2.5mV (MM), 150mV (line) Signal to noise ratio: 76dB (MM), 95dB (line) Channel separation: 50dB (MM), 50dB (line) Output: 150mV (line) Speaker load impedance: 8Ω (minimum) Dimensions: 433 x 155 x 355mm Weight: 8.6kg Inputs: Phone, Tape 1 & 2, Aux, Tuner Hifi Engine has reviews and manuals Terms Cash Photos https://chicago.craigslist.org/wcl/ele/d/naperville-sansui-4700-receiver/7511349329.html

One of the Japanese majors has gone GAN This one is Korean https://www.crutchfield.com/S-3h5jpiPRM59/p_358RA180/HiFi-Rose-RA180.html? There was at least one at AXPONA I suspect they will replace the current class D in the surrounds amps in the next 12-24 months as the GAN Audio chip sets ramp up. More efficient, less heat, greater density, smaller power supplies = cost reduction per watt with better spec out SEARCH "GAN audio amplifiers" lots of new products GaN400 Power Amplifier $2,999.00 GaNFET Technology • 400 watts per channel • Drives any speaker • Fully balanced topology • Balanced and unbalanced inputs https://www.peachtreeaudio.com/products/gan400 Nice explanation from Peach Tree What is GaN? The GaN400 achieves new levels of performance and efficiency by utilizing GaNFETs instead of MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) that have been the industry standard for more than 50 years. MOSFETs revolutionized the electronics industry in the second half of the 20th century and have become the most common transistor in electronics and the most widely used semiconductor device in the world! Their significance in the electronics industry and the other industries that rely on them can’t be understated. However, over the years, the rate of MOSFET improvements leveled off as the performance got closer and closer to the theoretical limits of the materials and processes. The need for something better grew. Enter GaN. GaNFETs started to gain attention over the last decade as audio engineers and designers realized that they were suitable for high frequency, high voltage, high temperature and high efficiency applications especially when compared to their MOSFET counterparts. GaNFETs turned-on ~4 times faster and turned-off ~2 times faster reducing switching distortion (ringing) by several orders of magnitude. This, in-turn, allowed designers to use much less global negative feedback to achieve excellent measured results. The result is an amplifier with exceptional musicality and excellent measured performance. In other words, an amplifier that provides wonderfully natural sounding music reproduction like the best tube amplifiers, yet retains the tight bass, extended frequency response and sheer dynamics of the best solid- state amplifiers. It really is the best of both worlds and all of this is accomplished in an amplifier that is also one of the most efficient designs in the market today converting ~96% of the electricity from the wall into usable power. The Importance of the Power Supply Every power amplifier is dependent on its power supply to provide the power reserves necessary to drive the loudspeakers at any volume level. The GaN400 is no different and it utilizes an impressive 850-watt RMS regulated power supply. This supplies the output modules with all the clean power they will ever need - even when things get really loud. The power supply uses the best parts available to ensure high performance, durability and long-term reliability.

Probably should have done 1 yr mechanical aka switches, and 3 electronics I have never had a mechanical sw failure on my audio gear but I set them and forget them

Starting to see GAN FETs in new Amp designs Specs out much better than the Class D offerings we have seen Was Mil Tech until recently Gallium nitride (GaN) ICs Maximize power density and efficiency with our portfolio of GaN power devices for every power level Our family of gallium nitride (GaN) FETs with integrated gate drivers and GaN power devices offers the most efficient GaN solution with lifetime reliability and cost advantages. GaN transistors switch much faster than silicon MOSFETs, offering the potential to achieve lower-switching losses. Our GaN ICs can be used in a wide range of applications, from telecommunications, servers, motor drives and laptop adapters to on-board chargers for electric vehicles. https://www.ti.com/power-management/gallium-nitride/overview.html What is gallium nitride (GaN)? Gallium nitride (GaN) is a wide bandgap semiconductor that enables higher power density and more efficiency than traditional silicon metal-oxide semiconductor field-effect transistors (MOSFETs) and insulated gate bipolar transistors (IGBTs). GaN processes power more efficiently than silicon-only solutions, reducing power loss by 80% in power converters and minimizing the need for added cooling components. By packing more power into smaller spaces, GaN lets you design smaller, lighter systems. Some Eng articles on Gan, some audio related https://www.electronicdesign.com/leaders/power/power-supplies/article/21174367/gan-fet-technology-solving-audible-challenges-for-highperformance-audio-amplifiers

https://www.crutchfield.com/S-3h5jpiPRM59/p_358RA180/HiFi-Rose-RA180.html? https://eng.hifirose.com/index Another amp using Gan FET tech which was reserved for Mil applications So I have been told Amp has excellent specs THD, SN I wonder how it sounds

In broad strokes, the review was spot on Agree, the Forte punches way out of it's weight class I spent days listening to all of them side by side at Audio Associates in Wheaton MD, back in the 70s. The KH has better base, but placement sensitive, so I went with the LaScalas and never looked back

Does anyone know what the make and model of the Integrated amp is ? Buttons, gauges, meters, sliders, knobs, switches and Steam Punk Gears Looks like the ultimate device of some kind the only thing missing is a flywheel or some other moving part Found it on his YT page HiFi Rose RA180

ION AIR PURIFIERS I have several of these that work great The Ozone part concerns me especially when it comes to the Klipsch speaker surrounds Does anyone think a cleaner like the Ionic Breeze (most famous) or the Environ Ionic-Pro will generate enough O3 to damage anything ? They are effective at cleaning the air, but not at the cost of damaging my speakers or electronics

Must be feeling cantankerous this am What's with the all-black Goth look ? I remember these guys as bubbly bouncy early 20s band with a unique style ..

Loved Krauss, never a LZ fan Was hoping for something new Love is blind .....

Bee Hive making a comeback or Coneheads parody ?

Goodnight from Chicago Just a Biker Bar Band from California Should have been the LP of the year 73 Captain and Me Crank it up, forget the neighbors, Every track rocks

What a great movie in so many ways Lazenby pulled it off in great fashion Don't recall why they didn't bring him back Armstrong hit it out of the Park on the theater sound system where I saw it. Don't understand how Dandy Moore ended up with the job and each farce worse than the previous one. Live and Let Die was great, then it fell off a cliff.

Goodnight from Chicago Retro Temptations The "Classic 5" lineup of the Temptations in 1967. Clockwise from top: David Ruffin, Melvin Franklin, Otis Williams, Eddie Kendricks, and Paul Williams. wiki

If you can afford the 5W Decware Amp you can afford replacement tweeters Buy the amp, and if you start blowing out tweeters, either turn it down, or get a 30W tube amp Lots of class A that measure well, and keep you warm in the long winters Pair of the beloved MC-30 Class B mono blocks, would be my sentimental Fav.....

Half a Watt is screaming 1/100 W is normal listening The question is at loud listening, What does a piano strike, gun shot or cymbal drive the amp up to ? If clipping destroys the tweeters Does 5 W exceed the demand of the above ? Good read https://pickmydrumset.com/how-many-decibels-db-loud-is-a-drum-set-and-cymbals/ Borrowed from garyrc wts SPL 1 95 dB 2 98 dB 4 101 dB (might deliver dynamic peaks as high as 104 dB--some risk of clipping) 8 104 dB 16 107 dB 32 110 dB 64 113 dB 128 116 dB

Curtis Steigers This guy reinvented himself to Jazz Sons of Anarchy Music director loved him. Back at you Looks like Bill Paxson on the guitar

The one type of music that I and my recently departed friend had in common was Blue Grass. Alas he liked speed, and I like the more rhythmic and slow. When I visited his place in the corn fields, we ended up with Perry Mason reruns for entertainment after the grill was off. Nice sounding band...

Clean all of the connections and gently inspect everything take some photos and post them Wiring may be dry rotted, plan on replacing all of it Mid range horn, aka squeaker, gasket between driver and horn is guaranteed dry rotted Caps on the crossovers are way past predicted life span Easiest and maybe best solution is a set of new Crites crossovers. Once disconnected, you can check the resistance of each driver, write it down and post it here. A basic Multi-meter from the hardware store should test in Ohms. Tell us what you find.....

Scrolling through my collection feeling retro this AM A few classics Concert could stand a resynch, upscale and audio clean up, which sounds pretty good. Gen 1 Music video, no auto tune etc or strippers Record quality just OK Blind Faith first concert Hyde Park Better quality 2007 version live 1970 Solo LP Full concert from Master One of my fav LPs on vinyl Live at the Fillmore