I just heard from the Rowland factory today: coming Friday, I will receive my pair (or should I call it my quartet?!) of M925 mono amps.... Needless to say, I am excited!
At 320 Lbs combined for the 4 creatures wearing their birthday suits (380 Lbs when boxed) my first challange will be to carry them upstairs to my music loft without mangling my back.
I will use Nordost Titanium Sort Kones instead of factory-provided footers... Each lower chassis has three divets caarved on its bottom plate, where footers are usually screwed in. Each amp will stand on top of 3 divet-centered Kones. these will sit on top of 1.5 inch thick granite slabs, which have been patiently waiting in place for the M925 amps since 2011.
In order to break-in both output terminal in each unit, I will connect each amp to my Vienna Die Muzik with a form of shotgun wiring: Aural Symphonics Chrono and Cardas Golden Ref for the time being. The Aural Symphonics speaker wire connects to the single 5-way binding post of the Muzik speakers with bananas; the Cardas Golden Ref connects to the same posts with spades... I have already tested the configuration on the M725 monos... Works flawlessly. Of course, I have no idea if M925s benefit from shotgun wiring... This will be part of the discovery fun!
The amps will be fed by the Criterion linestage through Aural Symphonics Chrono B2 XLR ICs.
Power cords will be Aural Symphonics Magic Gem and Ultra Cube XXV, plugged into a dedicated 20A circuit served by Furutech outlets.
I suspect that the break-in process may extend well into the summer months... I will log my periodic observations on this thread.
For sake of completion, here are the amps specs as far as I know them:
Monoblock Power Amplifier OUTPUT POWER: 430 watts @ 8 ohms/850 watts @ 4 ohms
Monoblock Power supply: 2400 W regulated DC SMPS per channel, with Active Power Factor Correction (PFC).
FREQUENCY RESPONSE: 5 Hz - 50 kHz
INPUT IMPEDANCE: 40k ohms
THD + NOISE: 0.004%, 20 Hz- 20 kHz
OVERALL GAIN: Switchable 26/32 dB
Combined AMPLIFIER chassis & POWER SUPPLY chassis WEIGHT: 160.4 lb / 73 kg (per channel)
TOTAL DIMENSIONS (H/W/D): 16.5" x 15.5" x 16.25" (per channel) 419mm x 394mm x 413mm
Saluti, Guido
At 320 Lbs combined for the 4 creatures wearing their birthday suits (380 Lbs when boxed) my first challange will be to carry them upstairs to my music loft without mangling my back.
I will use Nordost Titanium Sort Kones instead of factory-provided footers... Each lower chassis has three divets caarved on its bottom plate, where footers are usually screwed in. Each amp will stand on top of 3 divet-centered Kones. these will sit on top of 1.5 inch thick granite slabs, which have been patiently waiting in place for the M925 amps since 2011.
In order to break-in both output terminal in each unit, I will connect each amp to my Vienna Die Muzik with a form of shotgun wiring: Aural Symphonics Chrono and Cardas Golden Ref for the time being. The Aural Symphonics speaker wire connects to the single 5-way binding post of the Muzik speakers with bananas; the Cardas Golden Ref connects to the same posts with spades... I have already tested the configuration on the M725 monos... Works flawlessly. Of course, I have no idea if M925s benefit from shotgun wiring... This will be part of the discovery fun!
The amps will be fed by the Criterion linestage through Aural Symphonics Chrono B2 XLR ICs.
Power cords will be Aural Symphonics Magic Gem and Ultra Cube XXV, plugged into a dedicated 20A circuit served by Furutech outlets.
I suspect that the break-in process may extend well into the summer months... I will log my periodic observations on this thread.
For sake of completion, here are the amps specs as far as I know them:
Monoblock Power Amplifier OUTPUT POWER: 430 watts @ 8 ohms/850 watts @ 4 ohms
Monoblock Power supply: 2400 W regulated DC SMPS per channel, with Active Power Factor Correction (PFC).
FREQUENCY RESPONSE: 5 Hz - 50 kHz
INPUT IMPEDANCE: 40k ohms
THD + NOISE: 0.004%, 20 Hz- 20 kHz
OVERALL GAIN: Switchable 26/32 dB
Combined AMPLIFIER chassis & POWER SUPPLY chassis WEIGHT: 160.4 lb / 73 kg (per channel)
TOTAL DIMENSIONS (H/W/D): 16.5" x 15.5" x 16.25" (per channel) 419mm x 394mm x 413mm
Saluti, Guido
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