ELECRAFT SP3 Owner's Manual

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ELECRAFT

SP3 Speaker

OWNER’S MANUAL

Introduction

The SP3 is a high-quality, front-facing speaker that complements Elecraft’s K-Line both aesthetically and
functionally. It can be used with any receiver capable of driving a 4-ohm load. The speaker is passive (non­amplified), ensuring no susceptibility to RFI in the present of a transmitted signal. The SP3’s custom-built,
wide-range driver has excellent sensitivity and deep bass response.

The A/B switch on the front panel of the SP3 can be used to select one of two mono sources. Further, when used

in conjunction with a second SP3 this switch can be used to select one of two stereo sources. The Elecraft K3

and K3
well as user-adjustable left/right balance between main and sub receiver audio.

Rear-panel input jacks accept either mono or stereo cables, simplifying station wiring. An output jack is
provided for connection to a second SP3. When two SP3s are used, the A/B switch on the first unit controls
source selection for both.

S transceivers take full advantage of this feature, since both provide rich binaural audio effects (AFX), as

E740273 Rev A, October 9, 2015, Copyright © 2015 Elecraft, Inc.

Specifications

Dimensions (see Figure 1)

The tilt stand height matches the Elecraft K3 and K3
Panadapter.

Allow an additional 2" (5 cm) space behind unit for rear panel connectors.

Figure 1. SP3 Speaker External Dimensions.

S transceivers, the KPA500 Amplifier and the P3

Weight: 4 lb, 12 oz ( 2.2 kg)

Speaker Size: 3” x 5” (77 x 127 mm)

Speaker Impedance: 4 ohms

Magnet Type: Neodymium

Power Handling Capability: 15 W

Frequency Response: 100-20,000 Hz

Sensitivity: 90 dB SPL

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