SP-20AB MANUAL

O NOFF

120 VAC

60 Hz

130 Watts

GND

INPUT

LIFT

LEFT / MONO

 

INPUT

/ REMOTE

RIGHT

SATELLITE

M O N O

 

 

STEREO

SPEAKERS

 

LEFT

RIGHT

BRIDGED

USE FOR BRIDGED

contact between chassis, as in a rack with metal rails. Sliding the Ground Lift switch up completely isolates all signal grounds from the chassis, breaking any ground loops. The chassis always remains connected to the ground pin on the AC cord for safety and to provide shielding against RF interference. Try both positions of the Ground Lift switch, and leave the switch in the position that results in the least hum in your system. Note: The ground lift can be rendered ineffective by 3 pin audio connectors that tie pin I (signal ground) to the metal shell of the connector (chassis ground). The connection from pin 1 to the shell is optional on all 3 pin connec- tors, and can be removed if present, by opening up the connector on the cable and disconnecting it.

MODE SWITCH: This three position slide switch determines the SP-20AB’s mode of operation The three choices are:

MONO: This position is also referred to as “Dual Mono” because while both channels are operating separately (each driving its own speaker), there is only one input, which appears at both outputs. The input must be connected to the “Left/Mono Input” jack.

STEREO: This position is for normal stereo operation, where there are two inputs (left and right) and two outputs.

BRIDGED: This position should be used for straight mono operation, when there is

only one input (plugged into the “Left/Mono Input” jack) and all the SP-20AB’s power is to be concentrated into one output. Note that under some circumstances, this can amount to more than double the rated 20 watts pet channel for stereo .- to as much as 50 watts. Therefore, in bridged mode, for adequate protection, the speaker connected should be able to handle approximately 100 watts without damage. See “SPEAKER OUTPUTS” below for details of how to connect the speaker.

SPEAKER OUTPUTS: These outputs should be used for driving speakers. The connections are via multiple-use terminals, which can accommodate either dual banana plugs, bare wires, or wires terminated in spade lugs. For stereo or dual mono operation, connect one speaker to the left pair of terminals and the other speaker to the right pair. Observe proper polarity - make sure that the wire connected to the top (red) terminal on the left channel connects to the red terminal of the left speaker, and that the wire connected to the top (red) terminal on the right channel connects to the red terminal of the right speaker. If the wires to one speaker are reversed, the speakers will be of opposite polarity (or “out of phase”), and a severe loss of low frequencies may, result.

If Mono Bridged operation is desired, the single speaker must be connected to the

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Furman Sound SP-20ABE manual Noff
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SP-20ABE, SP-20AB specifications

Furman Sound is a name synonymous with high-quality power management solutions for professional audio, video, and broadcast systems. Among their impressive lineup, the SP-20AB and SP-20ABE power conditioners stand out as essential tools for those who demand reliability and performance in their setups.

The SP-20AB and SP-20ABE are designed to safeguard audio equipment from power surges, electrical noise, and other fluctuations that can jeopardize the integrity of a performance. One of the main features of these power conditioners is the Advanced Power Factor Correction technology. This innovation enhances the efficiency of connected equipment, ensuring optimal operation even in electrically noisy environments.

Both models come equipped with a robust circuit breaker, providing added protection against overloads. The front-panel displays include LED indicators that keep users informed about the power status and any potential issues, ensuring peace of mind during critical operations.

A significant characteristic of the SP-20ABE is its built-in Ethernet connectivity, which allows for remote management and monitoring capabilities. This feature is invaluable for sound engineers and technicians who need to manage multiple devices from a single interface. Such connectivity enhances efficiency and simplifies troubleshooting in larger setups.

The SP-20AB and SP-20ABE also incorporate Furman's proprietary Series Multi-Stage Protection. This multi-layered defense system gives users the assurance that their equipment is secured from damaging transients. The design also includes extensive filtering that minimizes electromagnetic interference (EMI) and radio frequency interference (RFI), ensuring cleaner audio signals and enhanced sound quality.

Both models feature a rugged, roadworthy chassis built to withstand the rigors of touring and on-site performances. This durability means they’re not only suitable for studio environments but also perfect for live applications where reliable power conditioning is crucial.

In summary, the Furman Sound SP-20AB and SP-20ABE power conditioners are vital assets in any audio professional's toolkit. With advanced technologies focused on efficiency, protection, and monitoring, they provide a blend of performance and reliability that ensures your audio gear operates optimally in any setting. Whether in the studio or on the road, these power conditioners represent a wise investment for safeguarding your audio investments.
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