2800W 4-Channel Amplifier with NomadLink Network Monitoring and Dedicated Control for Install Applications
The C 28:4 is one of two mid-power, four-channel amplifiers in the C Series family. Attractively packaged in a 2U chassis, it provides 4 × 700 W output into 4 ohm loads.
C Series amplifiers are uniquely capable of adapting to a wide variety of demanding load conditions. Each channel has an individually configurable Voltage Peak Limiter (VPL™), which allows the output to be optimized for any loudspeaker load – whether a single large subwoofer or a series of small 100/70 V loudspeakers. VPL works in combination with adjustable input gain to achieve maximum headroom regardless of input levels or output impedances.
Every C Series is ready for the NomadLink® network right out of the box. With NomadLink, key amplifier parameters are displayed via DeviceControl software, and remote control of channel mutes and power on/off is under network control.
Specification
General
| Number of amplifier channels |
4 |
| Peak total output all channels driven |
2800 W |
| Peak output voltage per channel |
141 V |
| Max output current per channel |
12 Arms |
Max output power (all channels driven)
| 16 ohms |
600 W |
| 8 ohms |
700 W |
| 4 ohms |
700 W |
| 2 ohms |
300 W |
| Hi-Z per ch. (all ch.’s driven): 70 Vrms / 100 V peak |
700 W |
Max output power bridged
| 16 ohms |
1400 W |
| 8 ohms |
1200 W |
| 4 ohms |
600 W |
| 2 ohms |
Not recommended 1 |
| Bridged per ch.: 140 Vrms / 200 V peak |
1400 W |
Performance
| THD 20 Hz – 20 kHz at 1 W |
<0.1% |
| THD at 1 kHz and 1 dB below clipping |
<0.05% |
| Signal to Noise Ratio |
>112 dBA |
| Channel separation (Crosstalk) at 1 kHz |
>70 dB |
| Frequency response (1 W into 8 ohms) + 0 / -3 dB |
6.8 Hz – 34 kHz |
| Input impedance |
20 kOhm |
| Common Mode Rejection (CMR) |
>50 dB, 20 Hz – 20 kHz |
| Output impedance @ 100 Hz |
30 mOhm |
Gain, Sensitivity and Limiters
| VPL, selectable per ch 2 |
141, 118, 100, 85, 71, 59, 50, 42 V |
| VPL, when bridged 2 3 |
282, 236, 200, 170, 142, 118, 100, 84 V |
| Voltage Peak Limiter mode (per ch.) |
Hard / Soft |
| Amplifier gain selectable (all channels) – rear-panel switches 3 |
23, 26, 29, 32, 35, 38, 41, 44 dB |
| Default gain |
35 dB |
| Level adjustment (per channel) |
Front-panel potentiometer, 21 position detented from -inf to |
Connectors and Buttons
| Input connectors (per ch.) |
3-pin Phoenix, electronically balanced |
| Output connectors (per ch.) |
Barrier strip 2-pole screw terminals |
| Output bridge mode |
A+B and/or C+D, inputs A and C are input source |
| NomadLink network |
On board, 2 x RJ45 connectors IN and OUT |
| Intelligent fans (on/off) |
Yes, depending on presence of output signal |
| Power |
Individual switches on front panel |
| Cooling |
Two fans, front-rear airflow, temperature controlled speed |
Front-panel user interface
| Common |
NomadLink Network; Power Average Limiter (PAL)5; Power on |
| Per channel |
Signal present / High-impedance; -10 dB and -4 dB output signal;Voltage Peak Limiter (VPL); Current Peak Limiter (CPL): Very High Frequency (VHF); High temperature; Fault; Mute |
Power
| Operating voltage, 230 V / 115 V nominal |
130-265 V / 65 -135 V 4 |
| Minimum power-up voltage, 230 V / 115 V |
171 V / 85 V |
| Power Average Limiter (PAL) 5 |
Yes |
| Power Factor Correction (PFC) |
No |
| Soft-start / Inrush Current Draw |
Yes / max. 5 A |
| Mains connector |
230 V CE: 16 A, CEE7; 115 V ETL: 20 A / NEMA 5-20P; C16:4: 15A/NEMA 5-15P |
Dimensions
| Dimensions |
W: 483 mm (19”), H: 88 mm (2 U), D: 343 mm (13.5”) |
Weight
| Weight |
12 kg (26.4 lbs) |
Finish
| Finish |
Black painted steel chassis with gray painted steel front |
Approvals
| Approvals |
CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC |
Prompt Delivery and Professional Packaging
Our long-standing partnership with UPS FedEx DHL and other global carriers lets us offer a range of shipping services. Our warehouse staff is extremely skilled and will package your items according to our precise and exact specifications. Your goods will undergo an extensive inspection and be safely packaged prior to being sent out. Each day, we ship to thousands of customers in many countries. The fact that we are committed to becoming the biggest online retailer in the World is clear. These warehouses are in Europe in the same way as they are in USA.
Note: Orders that include more than one item are assigned a processing period depending on the item.
Before shipping, we will inspect thoroughly the items you have ordered. Most orders are shipped within 48 hours. Expected delivery time is between 3-7 days.
Returns
Stock is dynamic. It's not entirely managed by us since we are involved with multiple entities, including the factory and the storage. The actual stock can change at any moment. It is possible that your order may be out of stock once the order has been placed.
Our policy lasts for 30 days. We cannot exchange or refund your order if it has been 30 days from the date of purchase.
For your item to be returned it must be in its original packaging, unopened and in the condition you received it. The item must be in its original packaging.
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