I've seen amps like that at the Vegas CES. The rooms where nice and warm even from outside in the hallway and the scent of wafting cognac was wafting too. You're right way up here in Edmonton we see some -35 Celcius temps (-31 F) plus some stiff winds every winter. I have a selection of down jackets for the various conditions encountered here.For Canadians on cold winter nights, I recommend these (900s):
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Winter in Canada is no joke.I've seen amps like that at the Vegas CES. The rooms where nice and warm even from outside in the hallway and the scent of wafting cognac was wafting too. You're right way up here in Edmonton we see some -35 Celcius temps (-31 F) plus some stuff winds every winter. I have a selection of down jackets for the various conditions encountered here.
There are lots of very expensive amps that I see that are more extreme than this. They say that it's essentially the power of bridged MC275s.
My system is almost entirely tube based but my speakers are extremely efficient at about 105 db. At that efficiency only a few watts are needed; 40 watts for the woofer and 2 1/2 Watts for the tweeter horns.
The preamp is one of my own designs using 12 ax7 tubes. The electronic crossover is also one of my designs and that uses opamps it's 24db per octave linkwitz Riley. The low-frequency amp is a Macintosh 240 and the high frequency amp is a 300b tube amp kit which carry put out several years ago. I use 2A3 tubes in it and have done significant modification to this amp. I have four 18in JBL subwoofers re-tuned for 12 Hertz which are running in stereo. these are driven by 1000 watt soundcraft solid state amps. The room is 6000 square feet with a cathedral ceiling.What amps/pre are you using?
The preamp is one of my own designs using 12 ax7 tubes.
I would love to hear that sound.The preamp is one of my own designs using 12 ax7 tubes. The electronic crossover is also one of my designs and that uses opamps it's 24db per octave linkwitz Riley. The low-frequency amp is a Macintosh 240 and the high frequency amp is a 300b tube amp kit which carry put out several years ago. I use 2A3 tubes in it and have done significant modification to this amp. I have four 18in JBL subwoofers re-tuned for 12 Hertz which are running in stereo. these are driven by 1000 watt soundcraft solid state amps. The room is 6000 square feet with a cathedral ceiling.
This preamp was built probably 30 years ago. I'd have to try to dig out the schematics if they still exist. I know the power supply is pretty elaborate, well filtered and external to the preamp. The pot is motorized with control done in an old-school way with wires to the listening seat. I think the 12 ax 7s are buffered at their outputs buy a couple transistors in class a - mps 10s/ mps 60 if I remember correctly.Care to comment about the circuit? 12AX7 is a supremely linear tube when used correctly, but it's one of the most difficult to do circuits with it that realize its potential.
The room is 6000 square feet with a cathedral ceiling.
Yes you're right I meant cubic feet. The cathedral ceiling peaks at about 12 ft.That's huge.
Did, perchance, you mean cubic feet?
Lol OK. That’s more relatable to us, the ordinary human kind.Yes you're right I meant cubic feet. The cathedral ceiling peaks at about 12 ft.
But it is a dedicated listening room and in theory I could have banquets in there... Very small onesLol OK. That’s more relatable to us, the ordinary human kind.
With those 4 18” subs turned ON , eating peas of my plate could be challenging tho. .....But it is a dedicated listening room and in theory I could have banquets in there... Very small ones
It's a feature, not a bug.With those 4 18” subs turned ON , eating peas of my plate could be challenging tho. .....
I don't know about this new amp, but my MC240 has been as reliable as a hammer despite being manufactured in 1962 (it came with its original tubes which still worked - I changed all of them out just because). When I bought it from its original owner in the early 90s, I replaced the filter caps and the rectifier / capacitor in the bias supply. I do think those green LEDs under the tubes is kinda silly looking though, and I just have an aversion to microprocessors / microcontrollers in a component which is supposed to evoke "vintage" - despite the fact that I make my living in part by programming microcontrollers.But being a McIntosh, will it's owner get to experience the joys of repeated service calls and explaining to his less-enlightened buddies that "it's the price of owning a 'thoroughbred'"? And what's an audiophile to do when there's not so much as a bias pot to be fussed over?