vt4c
Responses from vt4c
| Does Time alignment and Phase coherency make for a better loudspeaker? To be precise the phase alignment in question is not in the recording, amplification, but in a multi element speaker where the speaker element placing and crossover design affect the time alignment of the output. Mr. Dunlavy was an RF engineer, r... | |
| Solid state amp recommendations for Maggies? The stereophile measured this speaker well and came up with a quite low efficiency and lower than advertized impedance. Tube amps use output transformers with secondary taps for loadmatching and typically do well with "nice" loads. The reflected ... | |
| Dual vs single sub Stereo bass? Vinyl mixes bass to a single channel for practical reasons. Moreover, localization of low bass is a non issue as you can't really tell where its coming from, only the higher harmonics is a clue, AND most music only have one bass instr... | |
| Does this exist? Preamp/Streamer/DAC with MQA, Roon and more Room EQ? This is a bad bandaid for poor acoustics. Good acoustics will not gain any favors with decorators and significant others. | |
| What class of amplifier has the most high definition sound ? Wrong question. It is related to results but does nor answer your question.Operating class is not a value graduation, while applicable to RF amps not so directly with audio. All low level stages are operating in class A, i.e. full current, they on... | |
| Does my amp have enough juice to power my speakers? Low efficiency speakers is a trap to be avoided.Chasing your tail with low efficiency speakers limits the choices in amplifiers. The music has min 12dB peaks, speech even more. A low power amp will produce DC into a speaker when overdriven, really... | |
| High resolution digital is dead. The best DAC's killed it. No matter how good the equipment, and/or bit resolution / sampling rate, it cannot fix a bad recording, and that's the bulk of them. | |
| Highest BUILD quality tube amps? Printed circuit boards comes in different ratings, most common is FR4, but there are others, including some laminated on metal. It would be possible to have a poweramp with a PCB and have chassis mounted tube sockets with wired connections to a PC... | |
| DC Offset Blocker/Killer - where to buy in the USA Try adding large paper/oil caps in series with one of the AC line wires, the type used for running AC motors and compressors, to see if it removes the hum. If does not resolve the problem the toroid could have enough of a magnetic field to excite ... | |
| DC Offset Blocker/Killer - where to buy in the USA Toroidal transformers has no airgap like old E I laminations or c-cores which means they have a very small stray field.A gap will minimize the DC saturation, so yes DC is bad but how much before the toroid starts humming from saturation. As the tr... | |
| This question is aimed to TRUE Elec Engineers, not fuse or wire directionality believers. Back to back MOSFETs suggested here will work but they need a 10V floating voltage source or some photovoltaic coupler to a DC detection circuit. These have time delays. The tweeter should be able to handle a short single spike. Average power will... | |
| What preamp creates the largest soundstage? Doubtful question."Sound stage" comes from the recording, it is not "created" in the pre-amp, power-amp, the interconnects, or the speakers.Equipment can only reveal or hide what was included in the recording. They cannot magically add what was no... | |
| The invention of measurements and perception Lot of nice posts here.Measurements are needed for development, quality control etc. It would be impossible to design and produce equipment based only on auditory results.Math is philosophy which is applied in measurements. Measurements quantify a... | |
| Does a cheap cd transport create poor digital copies? I suspect a CD can be read poorly intruducing errors. See the wikipedia for the Red books spec. There is some error corrction but not very strong. The PCM encoding of the digital output of a SPDIF has an analog component, as you will find out if y... | |
| Bi-Wire with two pairs of speaker cables Bi wiring a tube amp is very effective when you have 0 - 4 - 8 - 16 ohm connections. Use the "4" as "common" and the "0" for woofer, and the "16" for the tweeter. Polarity of the tweeter may have to be reversed. Easy enough.Now the thinner (usuall... |