20-amp power line conditioner, surge protector, and voltage regulator
Our take on the Furman SPR20i by Crutchfield's Steve Kindig
The SPR20i's outlets accept both 20-amp and standard 15-amp AC plugs. Its power cord must be plugged into a 20-amp receptacle.
Protection and power conditioning for 20-amp circuits
If you have a heavy-duty 20-amp circuit powering your audio/video system, Furman's SPR-20i prevents unstable AC power from holding back its performance. It also guards against harmful power spikes and surges, and filters out the noise riding along on your home's electrical wiring. Never heard of Furman? Most studio engineers have. The company's spent over 30 years meeting the extreme AC power demands of professional recording, film, and broadcast studios.
An oasis of stable power for your system
As heavier and heavier demands are placed on the nation's aging power grid, inconsistencies in the quantity and quality of every home's AC power will only get worse. These fluctuations may not affect your refrigerator or dishwasher, but they can cause problems for the delicate circuitry in audio/video equipment, shortening your gear's lifespan and degrading both picture and sound quality. The SPR20i maintains an unwavering 120 volts — you can check it on the front-panel display. And unlike most voltage regulators, this one is designed to work with heavy-duty 20-amp circuits.
See and hear the signal, not the noise
The SPR20i's wide-bandwidth filtering cuts way down on the AC "line noise" that can mask subtle ambient sounds and fine picture detail. Twelve AC outlets on the back panel are divided into three banks, to isolate your system's digital and video circuits from analog components and amplifiers. This helps prevent noise created by one component from affecting the power going to your other plugged-in equipment. These outlets will work with 20-amp or standard 15-amp AC plugs, and they've got hospital-grade connectors that grip your gear's plugs securely.
- 12 AC outlets with 3 isolated banks (outlets are compatible with 15-amp and 20-amp AC plugs):
- one "Audio" bank of 4 filtered outlets
- one "Video" bank of 4 outlets with additional ultrasonic filtering for digital or video components
- one "Audio/Video" bank of 4 filtered outlets
- 7-ft. AC power cord with NEMA 5-20P plug (requires a 20-amp circuit and a 5-20R T slot receptacle)
- AC outlets use hospital-grade connectors to grip plugs firmly
- voltage regulation circuitry ensures that your equipment receives a consistent, optimal amount of power
- Series Multi-Stage Protection surge suppression system can withstand multiple catastrophic voltage spikes
- Extreme Voltage Shutdown circuitry monitors incoming AC and automatically cuts off power to connected equipment if overvoltage is detected
- wide-bandwidth EMI/RFI noise filtering for clearer sound and picture
- Ultrasonic Bi-filtering isolates digital and video circuits from analog components
- three sets of coaxial RF connections for cable/satellite/TV antenna
- RJ-11 phone line input and output
- front-panel display lets you check input voltage or current, and output voltage
- maximum current rating: 20 amps
- 17"W x 4-1/8"H x 18-3/8"D
- weight: 31 lbs.
- warranty: 5 years
- Our 60-day money-back guarantee
What's in the Box:
- Voltage Regulator
- 7' AC power cord with NEMA 5-20P plug (requires 5-20R T-slot receptacle)
- 2 Piece power cord bracket
- 2 Machine screws
- 2 Rack mount brackets
- 6 Rack mount machine screws (each with star lock washer attached)
- Owner's guide (English/ French)
- Warranty registration card
This unit is the best yet. We install this equipment in limousines running a Crestron system in front of a suite of AV equipment. In this "challenging" environment, the SPR20i is the first unit to perform flawlessly.
David, Boise, ID
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Features and Specs
|Total AC Outlets||12|
|Powerline Network Compatible||No|
|Connected Equipment Guarantee||$500 deductible|
|Parts Warranty||5 Years|
|Labor Warranty||5 Years|
Stable Power: The SPR-20i's exclusive Stable Power AC Voltage Regulation Technology maintains 120 volt AC output with higher and lower voltage inputs, allowing power amplifiers and powered subwoofers to perform at their full potential. Using the SPR-20i, your home theater is supplied with constant, virtually unwavering AC voltage. Fuman's zero-crossing solid state technology provides 60 amps peak current, avoiding the current limiting found in AC regulators that convert AC power into DC, then synthesize an AC output signal.
EMI and RFI Filtration: EMI and RFI noise entering your A/V system through the AC power line couples to the components and masks low level signals, compromising performance. This low level content is critical because it relays the harmonics and ambience in audio, and the depth and clarity in video. Furman's exclusive Linear Filtering Technology dramatically reduces noise, ensuring consistent peak operation regardless of load conditions or the time of day.
Series Multi-Stage Protection (SMP): SMP is maintenance-free surge suppression, offering AC protection without sacrificing itself in the event of a catastrophic surge. The SMP circuit senses voltages so high that operation is impossible and turns the power off before damage can occur; if the voltage exceeds 140 volts power is removed from all the outlets and the Extreme Voltage LED lights.
EVS: The Extreme Voltage Shutdown (EVS) circuitry constantly monitors the line voltage for unsafe over-voltage conditions. When an extreme voltage is recognized all 12 outlets are automatically disconnected to protect your equipment. Once the line voltage returns to normal the outlets are reconnected.
12 AC Outlets: The Furman SPR-20i features 12 rear-panel outlets in three sections; all the outlets are 3-prong NEMA 5-20R T-Slot receptacles and will accept either standard NEMA 5-15 or NEMA 5-20P plugs:
- Video Bank: The video bank has four outlets. In addition to the linear filter, an ultrasonic filter specifically benefits video components (DVR, DVD player, projector, Plasma and LCD TVs, etc).
- Audio/Video Bank: The audio/video bank has four outlets, EMI and RFI noise is removed by the linear filter.
- Audio Bank: The audio bank has four outlets, EMI and RFI noise is removed by the linear filter.
Transient Voltage Surge Protection: The SPR-20i features transient voltage surge suppression for standard telephone lines, coaxial cable TV lines, and coaxial satellite lines. There is one pair of phone input/output jacks and three pair of coaxial input/output jacks. The coax jacks are bi-directional and pass both DC carrier signals and high bandwidth HD signals with an insertion loss of less than 0.1 dB. All the in-line surge suppressors feature Furman's exclusive Zero Ground Contamination technology; this aids in eliminating audio buzzing and the video hum bars that can result from typical in-line suppressors.
Rack Mount: Brackets are included to rack mount the SPR-20i.
- Power: power switch; turns all outlets on/off
- Display: the blue LED display illuminates when the power switch is on; you can switch between showing the line input voltage and the input current
- Protection OK LED: illuminates to indicate that the wall outlet is properly grounded and Line/Neutral polarity is correct
- Extreme Voltage LED: illuminates to indicate the incoming voltage is too high and all the outlets have been disconnected
- Display Switch: toggle the display between showing the line input voltage and the input current
- Video Outlets: four linear filtered and ultrasonic filtered outlets
- Audio/Video Outlets: four linear filtered outlets
- Audio Outlets: four linear filtered outlets
- Phone Jacks: input and output for standard telephone line
- Coaxial Jacks: 3 pair of threaded F-type coax input and output terminals
- NEMA 5-20P: The included power cord has a NEMA 5-20P plug (three-prong with one of the blades turned 90°), so it requires a 20-amp NEMA 5-20R receptacle.
- Current Capacity:
- Input: 20 amps
- Output: 20 amps RMS (19 amps continuous @ 113 volts AC)
- Voltage Regulation: continuous 120 volt AC output (+/-1.0 volt) with input from 113 volts AC to 126 volts AC (the SPR-20i will regulate well beyond 113 to 126 volts, but not within +/-1.0 volt)
- Linear Noise Attenuation: Transverse
(Differential) mode (from 0.05 to 100 ohm line impedance)
- 10 kHz - 100 kHz: >40 dB
- 100 kHz - 1 GHz: >80 dB
- Power Consumption: 12 watts for display and control circuits (plus actual load)
- Over-voltage Shutoff Threshold: 140 volts AC (+/-3 volts)
- Weight: 31 pounds
Connected Equipment: Furman Sound's Connected Equipment Warranty covers equipment that is damaged by a transient voltage while properly connected through the Furman SPR-20i to a properly wired AC power line with a protective ground in an indoor location. Furman's Connected Equipment Warranty is limited to the amount of the deductible on the Purchaser's personal property insurance policy, up to $500.00. The Connected Equipment Warranty is in effect for a period of five years.
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At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.
Why did you buy this?
Performance to price - need it for a Super high-end system [ Peter Dec 11, 2017 ]
I choose the Furman SPR-20i because is a reliable voltage regulator. I choose Crutchfield to buy it because Crutchfield is a reliable and authorized Furman seller. Thank you! [ JOSE Dec 20, 2016 ]
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