Rear Views, RR-215, RR-131, RR-231

(unbalanced). The extra outputs may be used if, for example, a signal split is needed to feed both a tape recorder and a PA system.

CONTROLS AND INDICATORS

Power on-off

Range: Allows selection of ±6 dB or ±12 dB boost or cut. Color-coded LED’s indicate the range selected.

Bypass: Toggles the EQ between IN and OUT (bypassed). A yellow LED glows to indicate Bypass.

Low Pass Filter: Decreases the higher frequencies. Useful in reducing hiss or sibilance. The filtering range is continuously adjustable from 3 kHz up to 50 kHz.

High Pass Filter: Decreases the lower frequencies, to combat rumble, footsteps, wind noise, etc. Continuously adjustable from 10 Hz to 250 Hz.

Level Control: This control may be used to compensate for any changes in volume caused by the EQ settings.

Clip LED: Indicates a distortion-causing overload. Adjust the Level control to compensate for clipping.

EQ Sliders: These sliders allow boost or cut of either ±6 dB or ±12 dB (depending on the setting of the Range switch) over a narrow frequency band.

Ground Lift: Fights hum or buzz by separating the signal and chassis grounds.

WARRANTY INFORMATION

The RackRider RR-Series Graphic Equalizers are protected by a limited ninety (90) day warranty covering manufacturing defects. Warranty service is provided by Furman at the address below.

 

SPECIFICATIONS

Channels:

RR-131: one; RR-215, RR-231: two

Bands per Channel:

RR-215: 15 (25, 40, 63, 100, 160, 250, 400, 630,1k, 1.6k, 2.5k, 4k, 6.3k, 10k, 16k)

 

RR-131, RR-231: 31 (20, 25, 31.5, 40, 50, 63, 80, 100, 125, 160, 200, 250, 315, 400,

 

500, 630, 800, 1k, 1.25k, 1.6k, 2k, 2.5k, 3.15k, 4k, 5k, 6.3k, 8k, 10k, 12.5k, 16k, 20k)

Boost/Cut Range:

±6 dB or ±12 dB, switch selectable

Slider Travel:

20 mm with center detent

Input Connections:

Active balanced XLR and ¼" TRS; unbalanced RCA

Impedance:

Input: 20 kbalanced; 15 kunbalanced; Output: Less than 600

Maximum Levels:

Input: +18 dBV; Output: +16 dBV

Signal to Noise Ratio:

93 dB at 1 kHz

Distortion:

.02% THD, 1 kHz, all sliders at center

Frequency Response:

20 Hz to 50 kHz, +0, -3 dB, all sliders at center

High Pass Filter:

RR-131, RR-231: 10 Hz To 250 Hz Variable; RR-215, 40 Hz fixed; 12 dB/octave

Low Pass Filter:

RR-131, RR-231: 3 kHz To 50 kHz Variable; RR-215: 16 kHz fixed; 12 dB/octave

Dimensions (W X D X H):

RR-215, RR-131: 19" X 8.66" X 1.75"; RR-231: 19" X 8.66" X 3.5"

Weight:

RR-215, RR-131: 5.22 lbs (2.9 kg); RR-231: 9.36 lbs (5.2 kg)

Power Requirements:

100-120 VAC, 60 Hz, or 200-240 VAC, 50 Hz, switch selectable; 15 watts

Safety Agency Approvals:

CE, TUV, EMC. Pending: NRTL

3-0110

963002-2751

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Furman Sound manual Rear Views, RR-215, RR-131, RR-231, Specifications, Controls and Indicators, Warranty Information

RR-215, RR-131, RR-231 specifications

Furman Sound has long been recognized for its cutting-edge power management equipment, and the RR series, including the RR-231, RR-131, and RR-215, exemplifies this legacy. These rack mount power conditioners are designed to meet the unique needs of audio and visual professionals, providing reliable power management along with advanced protection features.

The Furman RR-231 is lauded for its impressive capabilities in power filtration and management. It features a robust voltage regulation system that ensures consistent power delivery, protecting sensitive equipment from voltage spikes and drops. This model includes a series of AC outlets, allowing users to connect multiple devices while using sophisticated surge protection to eliminate the risk of damage during power surges. The RR-231 also incorporates Furman’s unique Linear Filtering Technology (LiFT), which ensures that any noise generated from other electronics in the same power circuit is minimized, resulting in cleaner power and improved audio fidelity.

On to the RR-131, this unit strikes a balance between functionality and affordability. It comes equipped with essential features that make it a valuable addition to any professional setup. The RR-131 includes a built-in digital voltmeter, providing users with real-time feedback on their power supply, which is crucial for monitoring electrical health in performance and studio situations. Furthermore, the unit also supports eight outlets for easy connections and has an LED indicator for power status, ensuring users can quickly ascertain the condition of their equipment.

The RR-215 model represents the high-end of the Furman lineup, and it boasts an impressive array of features. It is particularly praised for its advanced technology such as AC line filtration which significantly reduces electromagnetic interference (EMI) and radio frequency interference (RFI), providing a cleaner power signal. The RR-215 also includes a programmable sequencer, allowing users to queue their equipment to power on and off in a specific order. This is particularly beneficial for preventing loud pops and thumps that can occur from equipment powering on simultaneously.

In summary, Furman Sound's RR series power conditioners—RR-231, RR-131, and RR-215—are engineered to deliver exceptional performance, protection, and convenience. With features like linear filtering, digital voltmeters, and programmable sequencing, these models provide audio professionals the security and reliability they need for their critical applications. Whether for live performance, studio recording, or installation, the RR series ensures that equipment operates at peak performance while safeguarding against power-related issues.