RAM CB series – 2×560 Watt Amplifier

CB Series ?  CB 1402
Rugged Power Amplifier

Presentation
The CB Series is a medium cost ensemble of amplifiers covering the most used power specifications. The four offered models share the well proven RAM Audio topology for ease of servicing.

The latest breakthrough in component assembly and manufacturing processes are present in this new Series.

All the models are equipped with high efficiency toroidal transformers and long life capacitors in a common, sturdy two U steel chassis.

The sum of these specs put them on the front row of cost/effectiveness for all fixed and mobile uses.

Features
 2U heavy duty steel chassis
 Modular construction for easy servicing
 Symmetrical layout for even weight distribution
 High efficiency toroidal main transformer
 Oversized, high energy, linear power supply
 Dual, parallel or bridged operation
 Twin balanced inputs (Neutrik XLR connectors)
 Three dedicated Speakon outputs
 High quality components used throughout
 Efficient back to front cooling
 Dual, continuously variable speed axial fans
 Fault, signal, and clip indicators
 Functional integrated front panel design
 Heavy duty alloy carrying handles

Protections
 Calibrated mains fuse
 Independent channel supply fuses
 Input signal muting at turn on
 Continuous short-circuit protection (CSP)
 Thermal overload protection
 Intelligent clip-limiter (ICL)
 Progressive Ramp input signal
 Currentless relay operation (CRO)

Technical Specifications
Output Power  
Continuous Average Power RMS, 1kHz, 1.0%THD+N

@ 2 ohms: 2x 710W
@ 4 ohms: 2x 560W
@ 8 ohms: 2x 390W
Bridge @ 4 ohms: 1420W
Bridge @ 8 ohms: 1120W

Pink Noise 12dB Crest Factor

@ 2 ohms: 2x 1100W
@ 4 ohms: 2x 750W

Frequency Response
Power Bandwidth ±0.25dB  20Hz - 20kHz

Phase Response
@ 1watt 20Hz - 20kHz  Â±15deg

Total Harmonic Distortion
20Hz - 20kHz  
Intermodulation Distortion
SMPTE  
Crosstalk
20Hz - 20kHz  >75dB

Voltage Gain
dB  33dB

Sensitivity
Rated Power@4ohms  1V

Signal-to-Noise-Ratio
A weighted  110dB

Required AC Mains 230V/50Hz or 120V/60Hz
1/8 rated power (230V@4ohms)  3.7A

Dimensions
W x H x D  483 x 89 x 450 mm
19 x 3.5 x 17.7 in

Weight
Shipping: 18.8 Kg - 41.5 Lbs
Net: 18 Kg - 39.7 Lbs

Protections
Soft-start, Turn-on Turn-off transients, Muting at turn-on, Over-heating, DC, RF, Short-circuit (CSP), Open or mismatched loads, Overloaded power supply, Input overload (ICL), CRO

A full model revision takes Yamaha's high-end PC-N power amplifiers to the next level - the PC-1N Series. The new PC-1N Series amplifiers feature an extraordinarily solid low end, rich midrange, and superbly defined highs. They also deliver fast response and exceptional stability even in the face of serious power supply limitations. Refinements throughout this expanded five-model lineup make these amplifiers the new benchmarks for quality, reliability, and versatility in professional applications. Frequency Response: 10 Hz – 40 KHz. Output Power: 2 x 500 Watt / 8Ω RMS, 2 x 800 Watt / 4Ω RMS, 1600 Watt / 8Ω bridge RMS. Weight: 12,5 Kg.

- Power levels matched to the most popular speakers used by entertainers
- Optimized for maximum real-world headroom into 4 ohm and 8 ohm speaker systems
- Inputs: XLR, 1/4" TRS and phono input connectors for compatibility with any source
- Outputs: Speakon(R) combo accepts, 1/4" (TS) plugs or Speakon 2-pole and 4-pole plugs (connects 2 poles only). Binding posts support all other speaker wiring systems
- Minimum depth chassis (10.1“/257 mm) fits in compact, inexpensive effects racks
- Lightweight - GX7 is only 15.5 lbs (7 kg)
- Detented gain controls for precise setting and matching of sensitivity
- GuardRail(TM) automatically protects the amplifier and loudspeakers from damage due to temperature rise or overdrive without shutting down the show
- Front panel LEDs monitor Power, Signal and Clipping
- Subwoofer/Satellite crossover built-in
- 230V 16.5 lbs (7.5 kg)

Power Rating    

Stereo Mode:
8Ω EIA 1 kHz 1% THD - 500W
4Ω EIA 1 kHz 1% THD - 850W
2Ω EIA 1 kHz 1% THD - 1250W

Bridged Mono:
8Ω EIA 1 kHz 1% THD - 1700W
4Ω EIA 1 kHz 1% THD - 2500W

Damping Factor     Not Specified By Manufacturer
Input Sensitivity     26dB Setting - 3.28V
32dB Setting - 1.60V
Input Impedance     > 10kΩ balanced, or unbalanced
Gain     34.5dB
Frequency Response     20Hz to 20kHz, +/- 0.2dB
Signal-to-Noise Ratio     -106dB
Total Harmonic Distortion (THD)     0.02% @ 2Ω
0.005-0.01% @ 4Ω
0.002-0.01% @ 8Ω
Input Connections     Input: XLR Male, XLR Female and 3-pin detachable terminal blocks (1 each per channel)
DataPort: HD-15, input signal in parallel with XLR input connectors
Output Connectors     Output: Neutrik Speakon (ch 1 wired to both channels) and 5-way binding posts
Controls Front Panel     AC Power Switch
Gain Controls, 21 detents, 1 dB steps (each channel)
Controls (Rear)     Input Mode: Bridge (Yellow), Stereo (Green), or Parallel (Orange)
Gain / Sensitivity: 26dB (Orange), 32dB (Green), or 1.2V (Yellow)
High Pass (each channel): 3Hz (Off), 30Hz (Yellow), or 50Hz (Orange)
Clip Limiter (each channel): Off, On (Yellow)
Indicators     Clip Limiter (each channel): Off, On (Yellow)
Camera Resolution     Flow-thru air path and solid aluminum heat sinks
Power Consumption     120V 50/60Hz - 8.5A
230V 50Hz - 7.5A
Power Requirements     Not Specified By Manufacturer
Dimensions (WxHxD)     19 x 3.5 x 15.63" (48.3 x 8.9 x 39.7cm)
Weight     33.5 lbs (15.2kg)
Specialties     Parallel Dataport, XLR/M and XLR/F connectors for simple loop-through connectivity

Number of Channels: 2

Output Power: (per channel)

8 ohms     450W
4 ohms  850W
2 ohms 1550W



Output Power: (bridged)

8 ohms 1700W
4 ohms 3100W


THD%: (@1dB below max output)

@ 1kHz