Because analogue amplification is compromised, but most importantly you can't apply room correction, arguably even more important for vinyl. Ultimately though it just a nostalgia trip anyway, as every digital version sounds clearly better. I just love the looks, tactility and that it takes me back to my childhood, I've no interest in taking it seriously and haven't for years.
Thanks...that I can clearly understand, but I wonder about others.
Dear Galego.
I use V3Ms with separate 48V/5A power supplies for my Magnepan MG2.5Rs in a very large open room with ~20 foot cathedral ceilings and have no problem hitting ~80dB peaks watching movies. Per Fosi, there is no benefit for the 10A power supply on a single amp.
Can it hit 90db or is that asking a bit too much from these mini monos? Overall, I like it kinda loud, not a 70db listener. I am sitting about 11 1/2 ft away from a LRS+. Worst case, I could move closer to the speaker. I currently am using the high powered Emotiva class H, but, i don't like it that much.
Below is the Stereophile measurement of the impedance of the Magnepan MG2.5R. It's impedance is 6 ohms or higher from 20 Hz to 2 kHz, which is where most of the power demand lies.
Below is the Stereophile measurement of the impedance of the Magnepan MG2.5R. It's impedance is 6 ohms or higher from 20 Hz to 2 kHz, which is where most of the power demand lies.
Here is the max output the TPA3255 chip vs PS supply voltage in PBTL mode that the V3 Mono uses. At 48 Vdc supply, at 4 ohms the max output is ~250 W. Translating to 6 ohms, it is 250 * 4/6 = ~170 W.
The 48 Vdc 5 A power supply is rated to provide 240 W of power, and should be more than enough to power the V3 Mono to full output driving the MG2.5R. A higher current PS is only beneficial for driving loads that go substantially below 4 ohms at frequencies where there are high demands for power.
View attachment 388706
You think you'll be driving the LRS with >240W?
I don't know, i'd rather not blow anything up. I was only thinking out load about your statement, "A higher current PS is only beneficial for driving loads that go substantially below 4 ohms at frequencies where there are high demands for power."
Most people round here are perfectly aware that a ADC/DAC pair with competent electronics is 100% transparent** to the usual analogue sources - including vinyl.
You are measuring the wrong thing. I wouldn't really expect that doing anything with thermal paste, even removing it, would change the case temperatures.
Agree, no "single point" steady state measurement is going to give any meaningful information. Unless one measures a temperature gradient (i.e. at the chip and at the case simultaneously) or temperature Vs time (i.e. when the amp is switched on) or better a combination of the two, it will be impossible to asses how good or bad the thermal coupling is
I think it's probably good enough to measure just at a single point in time when the amp has been on long enough for its temperature to stabilise. Personally I'm not at all interested in details of how quickly it reaches that temperature.
Get some nice mil spec Caddock MP930 and replace them if they are critical and have to endure heat (they cost a bit but they deserve it,they are bomb-proof)
V3 mono has less gain and therefore requires a higher input voltage.
