ATC Loudspeakers R4-150 Pro Quad-Mono 150W/Channel Rack Mount Amplifier
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Description
Each of the four 150 W discrete MOSFET Class A/B amplifier channels features its own dedicated power transformer, ensuring very low crosstalk and the ability to deliver full rated power with all channels driven.
A class leading input stage provides exceptional common mode rejection across the audio bandwidth, reducing unwanted interference at the input by at least 10,000 times. This makes the amplifier ideally suited to electrically noisy environments such as busy machine rooms and complex multi-room facilities.
With fan-less convection cooling, the R4-150 Pro operates silently - perfect when installed in control rooms - while thermal and dc offset protection and remote power on/off trigger inputs allow flexible and reliable installation.
Features
• Quad-Mono 5U/19" power amplifier engineered for a wide range of demanding Pro Audio installation applications.• 4 x Independent high performance 150W grounded-source MOSFET AB power amplifier channels.
• Very Low Noise & Crosstalk plus exceptionally high common mode rejection balanced XLS inputs & speaker level audio outputs via Neutrik NL4 connectors.
• Front panel mounted bi-colour LEDs display power on/off and limiter 'active'.
• Rear panel mounted remote trigger on/off inputs.
• Thermal and DC offset protection.
• Convection cooled.
Specifications
Balanced Input: Rear Panel Mounted Female XLR, pin 2 hot.Input Impedance: 20kΩ (differential).
CMRR: > 80dB (20hz to 20kHz).
Input Sensitivity: 8.9dBu / 2.15Vrms (ref. 150W).
Amplifier type: Grounded Source MOSFET Class AB, convection cooled.
Output Power: 150W (continuous, at a a given distortion level, 8Ω).
THD+N: 0.0007% / -103dB (1kHz, 20kHz bandwidth, 1dB below full power).
Residual noise: 39uV (20hz to 20kHz).
S+N/N : 119dB (ref. 150W unweighted).
Frequency Response: < 5Hz to > 400kHz (-3dB).
Crosstalk: > 100dB (20Hz to 20kHz).
Damping factor: > 500.
Limiter: ATC Active FET Momentary Gain Reduction, limiter 'active' indicated on front panel.
Output Connection: NL4 (pins 1+, 1-).
Electronic Amp Protection: Amplifier D.C Offset and over-temperature indicated on rear panel.
Power Consumption: Standby 4W / 4.6VA, Idle 82W / 117VA, 1/8th power 361W / 478VA,
Full power 956W / 1161VA.
Mains Input: 220-230V, 115V - Factory set. Please observe panel markings and labels.
Heat Output: Standby 13.6 BTU/hr, Idle 278 BTU/hr, 1/8th power 975 BTU/hr, Full power 1215 BTU/hr.
Additional: Standby mode via 1/8"/3.5mm Jack socket & 3.5mm right angle header
Q & A
Reviews
Protect your investment with the Long & McQuade Performance Warranty
A warranty can be a very important factor when making a buying decision. Because repairs can be very expensive in terms of parts and labour costs, manufacturers usually only provide one year limited warranties that generally only cover items that malfunction due to a manufacturer’s defect. With an important purchase such as a musical
instrument or piece of studio gear, however, many people want to have the peace of mind in knowing that their investment will be protected should the product no longer be performing at 100%.
Because of this, Long & McQuade provides our customers with a FREE one-year Performance Warranty on most of our products. The Long & McQuade Performance Warranty supplements the manufacturer’s warranty to ensure that our customers receive complete “no hassle” warranty coverage within their first year.
How does the Long & McQuade Performance Warranty differ from most manufacturers' warranties?
- Performance Guarantee: Normal wear and tear is covered, so your product will be performing as well as the day you purchased it for the entire duration of the coverage. Band and Orchestral Performance Warranty does not include replacing pads or cleaning for woodwind instruments, unless deemed necessary by our repair staff. Ultrasonic cleaning for brass instruments will be provided if deemed necessary by our repair staff, but is not routinely offered under the Performance Warranty.
- Product Replacement: If your product cannot be fixed or costs too much to fix, we will replace it with the equivalent model for no additional charge. If this is not possible, a full refund will be provided.
- No Lemon Policy: Your product will be replaced should the same problem occur multiple times.
- Convenient: Easy drop off and pick up of the product at any Long & McQuade location.
- Guitar Setup: Guitars purchased at Long & McQuade come with 1 free setup, to be redeemed within 1 year for new guitars and 90 days for used guitars.
- Loaners Available: A loaner product may be given while the product is being repaired.
- Power Surge Protection: Your product is covered even if damaged from a power surge.
- Accessory Coverage: Any peripheral devices or accessories that come with your product (i.e. foot pedal, case) are also covered.
- Commercial Use Coverage: Music and recording professionals who purchase gear for “heavy-use” commercial purposes will still be covered.
Long & McQuade reserves the right to restrict the purchase of additional years of Performance Warranty. Used products come with a 3-month Long & McQuade Performance Warranty. Some products (i.e. computers, software, cymbals and other items) are covered only by the manufacturer‘s warranty. Consumables (i.e. strings, reeds, drum sticks, batteries, tubes, cross faders) are excluded as they are designed to be replaced. Cosmetic Damage, Accidental Damage, or problems caused by Humidity or Temperature Issues are not covered. Speakers damaged by overpowering are generally not covered. Our coverage does not provide compensation for loss of use. As of June 2018 the Performance Warranty is no longer transferable. The warranty is only valid in Canada.
Purchasing additional years of coverage
Some manufacturers provide warranties for longer than 1 year; however, these are usually limited warranties that do not provide the same coverage as the Long & McQuade Performance Warranty. Customers interested in more complete and convenient (but not necessarily longer) coverage are still able to purchase additional years of the Performance Warranty.
If you are interested in receiving this coverage for longer than one year, you have the option of purchasing additional years of the Performance Warranty. The pricing is as follows:
- NEW products: Starting at 4% of the current new selling price to double the warranty from 1 year to 2 years. Starting at 4% for each additional year.
- USED products: Starting at 4% of the current new selling price to increase the warranty from 3 months to 1 year. Starting at 4% for each additional year.
- GUITARS: 4% of the current new selling price to double the warranty from 1 year to 2 years. 4% for each additional year. $45 maximum. An additional free setup is not included with additional purchased years of Performance Warranty.
- BAND and ORCHESTRAL instruments: 4% of the current new selling price to double the warranty from 1 year to 2 years. 4% for each additional year.
Reserve in Store
| Product | SKU | Qty |
|---|---|---|
| R4-150 Pro Quad-Mono 150W/Channel Rack Mount Amplifier | 837026 |
