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Crown Studio Refrence 1 (Pair) - $4,800 (amelia)
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They are outstanding amps when run in stereo and even better in mono. The dampening factor is <20,0000. Over 2000 watts in mono 2 ohms and handle 1 ohm with ribbons (Apogee Full Range) and electrostats. These are great sounding amplifiers.
I am the 2nd owner, the boxes, packing, & manuals are in great shape, no shipping labels on boxes. I have the FX cards for xlr input, however I used 1/8" cables. They will include the 30 amp adapter plugs for standard 15 amp outlets,
They were into a factory service shop for a turn on transisitor. that needed updated. and again for a hum that ended up being my cable, not the amps.
I prefer to sell as pick up.
https://www.crownaudio.com/en/site_elements/studio-reference-manual
Studio Reference
Stereo mode (with both channels driven):
1,160 watts into 4 ohms.
780 watts into 8 ohms.
Bridge-Mono mode:
2,220 watts into 8 ohms.
1,580 watts into 16 ohms.
Parallel-Mono mode:
2,315 watts into 2 ohms.
1,565 watts into 4 ohms.
Frequency Response: ±0.1 dB 20 Hz to 20 kHz at 1 watt
(see Figure 6.5).
Phase Response: +5 to –15 degrees from 20 Hz to
20 kHz at 1 watt (see Figure 6.8).
Signal-to-Noise: (A-weighted)
Studio Reference : Greater than 120 dB below rated
full bandwidth power.
Total Harmonic Distortion (THD): Less than 0.02% at
rated low-distortion 1 kHz power. Less than 0.1% at rated
full bandwidth power.
Intermodulation Distortion (IMD): (60 Hz and 7 kHz 4:1)
Studio Reference : Less than 0.005% from full bandwidth
power to 78 watts rising linearly to 0.025% at
78 milliwatts.
Damping Factor: Greater than 20,000 from 10 Hz to
200 Hz, and greater than 2,500 at 1 kHz (see Figure 6.6).
Crosstalk:(At rated full bandwidth power)
Studio Reference : Better than 100 dB from 20 Hz to
100 Hz falling linearly to better than 70 dB at 20 kHz
(see Figure 6.10).
Common Mode Rejection (CMR): (At rated full bandwidth
power) See Figure 6.9.
Voltage Gain: (With level controls set for maximum output)
At the 26 dB gain setting, 20:1 ±3% or 26 dB ±0.25 dB.
Studio Reference : At 0.775 volt sensitivity, 103:1
±12% or 40 dB ±1 dB; at 1.4 volt sensitivity 57:1 ±12%
or 35 dB ±1 dB.
Includes:
two amps, factory boxes and packing, Orignial manuals, adapters, bridging plug, FX XLR cards.