SB Acoustics Gema 3 way speaker kit

Name: SB Acoustics Gema 3 way speaker kit
Brand: SB Acoustics
SKU: 1654
Price: 1169 EUR
Availability: InStock

In stock 1 pcs.

In Stock

€ 1,169.00

Tax included

Gemma

DIY kit with free access.

It does not come complete with ready-made boxes.

The set includes- 6 pcs. speakers and parts for 2 pcs. passive crossovers with Mundorf elements.

The rest of the components are offered at the customer's choice - input terminals, wires, screws, cotton wool and are not included in the indicated price.

Please ask for details.

Specifications

Frequency Range: 36 – 24000 Hz
Sensitivity ( 2.83V / 1m ): 87 dB
Nominal Impedance: 6Ω
Max SPL: 108 dB
Recommended Amplifier: 50 – 200 W
Crossover Frequency: 680/ 3000 Hz
Enclosure Type: Bass reflex
Port tuning Frequency: 28 Hz
Drive Units: SB26STAC-C000-4, 4 inch SB12NRX25-4 & 12 inch SB34NRXL75-8

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12" | 6 Ω | 80 W

Gema

Open Source Kit: Not available as full kit, read below for details.

Gema is a large 3-way speaker paying homage to the classic speaker of the 1970’s. Generous enclosure proportions fitted with large bass drivers were the bee’s knees at the time. And for good reason! The Gema is our take on a retro-styled speaker, and the much loved 12 inch SB34NRXL75-8 lays the foundation of a deep, well controlled and tuneful bassline.

The dedicated midrange is covered from 680Hz and all the way up to 3kHz by the 4 inch paper cone SB12MNRX2-25-4 which is characterized by good efficiency, low moving mass and great linearity resulting in excellent midrange clarity.

To perfectly match the articulate and open midrange the top end is handed over to the 1 inch soft dome SB26STAC-c000-4 equipped with die-cast aluminium faceplate, optimised rear chamber and full copper cap.

The well braced cabinet is designed with a large slot port tuned to 28 Hz opening to the front of the speaker and a generous sealed enclosure for the dedicated midrange. We highly recommend building the speakers from high quality 18mm plywood.

A good starting point for the replacement of the Gema would be a spacing of 2.5-3 meters between the speakers with generous clearance to any side and rear walls and ideally on a stand or plinth elevating the speaker about 25cm from the floor and tilted back at about 6 degrees and a slight toe in. The tweeter and midrange are intended to be on the outside, but this will depend on the room – as usual, we encourage you to experiment with speaker placement to suit your taste and listening space.

Open Source Kit

Gema is an open source kit meaning the speaker is fully developed and documented by SB Acoustics and you are free to use the plans.