A standard, 2-unit, 19" rack case as made by Bud industries in the US, for example.
RU (rack unit) is 44.5mm or 1 3/4" so 2RU is a 89mm or 3 1/2" high. Typically used to house mainframe computer storage drives etc. but also a global standard rack mounting case for pro audio gear.
e.g. https://au.mouser.com/datasheet/2/177/rm-1145021.pdf
RU (rack unit) is 44.5mm or 1 3/4" so 2RU is a 89mm or 3 1/2" high. Typically used to house mainframe computer storage drives etc. but also a global standard rack mounting case for pro audio gear.
e.g. https://au.mouser.com/datasheet/2/177/rm-1145021.pdf
I would assume that, yes, for a "glamour shot".
I'm also sure that the top couple were added with the use of a sturdy ladder with a muscular weightlifter on it.
I've serviced an MC2300 3 years ago, they're monsters to handle, with a twin-fan cooling system and massive transformers in a heavy steel chassis.
At 128 pounds, it's a bear to manipulate on the bench to work on.
And the turn-on surge through the fat power cord made my bench lights flicker.
At full rated power, they draw similar current as a space heater.
Wouldn't it be more practical to sit closer to your speakers, or perhaps get a hearing aid ? I'm quite happy with a 3 w pam.
Indeed.
My 60W/60W technics receiver, and 17/17W tube amp are more than enough for my 18X40 foot lvg/dng room area.
The guy who hauled his MC2300 all the way from Ohio to me in Philly to service, apparently is clueless to home stereo needs.
He's using this amp with a pair of Klipsh floor speakers that don't need such power.
These amps were/are popular with famous rock bands doing outdoor stage performances.
Think Woodstock-type events.
Funny, I used to use my PA for water ski shows and tournaments. 15-20 years ago in another life. When people literally are lined up for half a mile along the lake and want BASS.
The original Woodstock system used the TUBE versions, did it not? And today’s outdoor performances you add a zero or *two* to that 4200 watts because of the inefficient speakers.
More than once at the house in Florida I would open up the windows, crank up my stereo and mow the lawn.....without hearing the mower. The speakers were 96 dB efficient Hawthorne Silver Iris, and the amp was a 125 WPC tube amp running at the edge of clipping. DSOTM was a good "test record." That combo did bass quite well.
https://www.powersoft.com//en/products/install-amps/ottocanali-series/ottocanali-12k4
LabGruppen | Product | PLM 20K44 SP
Only two channels but serious power to weight:
https://www.powersoft.com//en/products/touring-amps/k-series/k20
LabGruppen | Product | PLM 20K44 SP
Only two channels but serious power to weight:
https://www.powersoft.com//en/products/touring-amps/k-series/k20
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Looking at that sound system, Cal, if I were a neighbour of yours I would certainly want to be distant! 😀
high power amps
These KW power amps are a variation on class-D, of course. They require special power in and "class-1" speaker wiring. These are for professional use and not somebodies home stereo.
Of course, you can not safely connect a single speaker to that kind of power. Perhaps an array of 100 speakers in a stadium. The 12 channel amp makes a bit more sense. Any professional band will need 6 or 8 channels for a 3 or 4 way PA system, and more channels for the stage monitors. But putting all you eggs in one basket is a bad plan. Bands need to be able to play on when equipment fails.
These KW power amps are a variation on class-D, of course. They require special power in and "class-1" speaker wiring. These are for professional use and not somebodies home stereo.
Of course, you can not safely connect a single speaker to that kind of power. Perhaps an array of 100 speakers in a stadium. The 12 channel amp makes a bit more sense. Any professional band will need 6 or 8 channels for a 3 or 4 way PA system, and more channels for the stage monitors. But putting all you eggs in one basket is a bad plan. Bands need to be able to play on when equipment fails.