20-amp power conditioner/surge protector/voltage regulator
Item #: 756SPR20I
Your price: $1,699.00 Earn up to 1,699 Rewards points
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Item #: 756SPR20I
Your price: $1,699.00 Earn up to 1,699 Rewards points
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.
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.
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.
Before I bought the Furman I was the previous owner of Monster products. I had the HTS-5100 which was connected to the AVS-2000. I had recently noticed that this combo was only keeping my system at 118.5 volts on average. I was beginning to suspect that the 5100 was the problem. Also at least once a day both systems acted as if a huge surge was coming in and as a result the display on the 5100 would dip down to 117 volts. I was also noticing that the picture from my 60inch Sony LCD was not as sharp as it used to be, it looked rather dull and lifeless. So I took a chance and bought the furman and am I glad I did. The first thing I noticed was that my tv now looked sharper and the colors a little more vivid. The Furman is also better built than the 5100 and it weighs about 11 pounds more. The 2000 and the 5100 do have a dimmer switch while the Furman does not even though the instruction manual says so. Furman actually confirmed that was a typo and will send you a corrected version of the manual upon request. It was for that reason I gave it only a four star rating. The blue display is very bright and if placed a few feet to either side of your tv it will be noticeable. A great purchase that I do not regret.
Pros: Pricey but worth it.
Cons: No dimmer switch for the bright blue display even though the manual says it has one.
Converting to high-grade audio tube equipment using KT-120 or KT-88 output tubes last year, I was encountering some wild voltage swings from our utillity, especially voltage jumps to 123VAC. These were murder on the rectifiers, which at $55 a pop are not pleasant to replace. Research led to the discovery that in the best of circumstances, under the U.S. ANSI standard, voltage to your house's service entrance can swing through about 12 volts (+ or minus 5% of 120 VAC) with even greater permissible short-term deviations. Since putting the Furman on line to a dedicated 20-amp breaker last winter, I'm on the same rectifiers, my tubes are happy, and I have enjoyed improved audio quality as well. My Fluke meter verifies Furman's claim that the Furman keeps output voltage rock-steady at 120 VAC, plus or minus less than a volt. Why expose expensive audio equipment to the vagaries of unacceptable but perfectly legal over- and under-volt situations?
Pros: Does its job as advertised. Essential for tube gear.
Cons: Spendy. But so are $50 rectifiers, $100 output tubes and capacitors.
|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:
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.
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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