FBT KEIRON 8S Point Source Subwoofer Owner’s Manual

KEIRON 8S Point Source Subwoofer

Specifications:

• Code: 46385 (Black), 45175 (White)

• Configuration: 1-way

• Low Frequency Woofer: 8 inch

• High Frequency Driver: 1.5 inch coil

• Frequency Response (@-6dB): 42 – 300 Hz

• Sensitivity (@1W/1m): 89 dB

• MAX SPL (cont/peak): 114 / 117 dB

• Dispersion: Omnidirectional

• Crossover Frequency: External, Recommended HP
  filter 38 Hz – 24 dB/oct

• Input Connectors: 4-pin Euroblock in &
  thru

• Recommended Amplifier: 300 W RMS

• Long Term Power: 150 W

• Short Term Power (IEC 268-5): 600 W

• Nominal Impedance: 8 Ohm

• Cabinet Material: HDF

• Net Dimensions (WxHxD): 390 x 190 x 390 mm /
  15.35 x 7.48 x 15.35 inch

• Transport Dimensions (WxHxD): 460 x 225 x 460
  mm / 18.1 x 8.9 x 18.1 inch

• Net Weight: 8 kg / 17.64 lb

• Transport Weight: 9.5 kg / 21 lb

Product Usage Instructions:

Installation:

1. Place the KEIRON 8S subwoofer in the desired location,
ensuring it has proper ventilation.

2. Connect the input source to the 4-pin Euroblock input
connectors.

Amplifier Connection:

1. Use a recommended amplifier with a minimum power of 300 W RMS
for optimal performance.

2. Connect the amplifier to the subwoofer using appropriate
cables.

Settings Adjustment:

1. Adjust the crossover frequency and HP filter settings
according to your audio requirements.

2. Set the volume levels on the amplifier and subwoofer to
achieve the desired sound output.

Maintenance:

1. Clean the cabinet and drivers regularly with a soft, dry
cloth to remove dust and dirt.

2. Avoid exposing the subwoofer to moisture or extreme
temperatures.

FAQ:

Q: Can I use the KEIRON 8S subwoofer outdoors?

A: It is recommended to use the subwoofer indoors or in covered
areas to prevent damage from environmental factors.

Q: What is the recommended amplifier power for the KEIRON

8S?

A: A minimum of 300 W RMS amplifier power is recommended for
optimal performance of the subwoofer.

Q: How should I adjust the crossover frequency?

A: Adjust the crossover frequency settings based on your audio
source and desired sound output, following the recommended HP
filter specifications.

Point Source Subwoofer
MAIN APPLICATIONS
· Music and live program reinforcement for permanent installations: · Houses of worship · Cruise ships · Corporate and industrial rental · Conference rooms · Pubs
MAIN FEATURES
· High excursion 8″ subwoofer · 300W RMS recommended amplifier · Input connectors 4-pin Euroblock (in & thru) · Wooden cabinet with scratch-resistant paint finish · Dedicated Installation bracket for easy flush-mounting (optional) · Removable 4 feet for ground · Available in black (code 45385) and white color (code 46175)

KEIRON 8S

DESCRIPTION
The FBT KEIRON 8S is an ultra-compact subwoofer designed to extend the bandwidth of KEIRON series in installation applications requiring discretion and elegance. The FBT KEIRON 8S features one 8″ transducer with 1,5″ voice coil. The power handling capacity of 300W RMS provide high fidelity sound for both speech and music applications with a maximum SPL of 117dB. The FBT KEIRON 8S can be stacked on the ground or mounted on the wall with dedicated hardware. The audio input and link to another subwoofers are connected via Euroblock 4 poles connector. The FBT KEIRON 8S enclosure is constructed from birch plywood with an impact resistant paint finish. CAUTION | No internal passive crossover, it needs external processing.

TECHNICAL SPECIFICATIONS

GENERAL
Code
Configuration Low frequency woofer High frequency driver

Black White way inch inch

46385 45175 1 8 – 1.5 coil —

ACOUSTIC SPECIFICATIONS

Frequency response (@-6dB) Hz

Sensitivity (@1W/1m)

dB

MAX SPL (cont/peak)

dB

Dispersion

H° x V°

Crossover frequency Recommended HP filter

Hz Hz – dB oct

42 – 300 89 114 / 117 Omnidirectional External 38 – 24

INPUTS & OUTPUTS Input connectors

4-pin Euroblock in & thru

AMPLIFIER
Recommended amplifier Long term power Short term power (IEC 268-5) Nominal impedance

W RMS W W Ohm

MECHANICAL SPECIFICATIONS

Material

Cabinet

mm Net dimensions (WxHxD)
inch

mm Transport dimensions (WxHxD)
inch

kg Net weight
lb

kg Transport weight
lb

300 150 600 8
HDF 390 x 190 x 390 15.35 x 7.48 x 15.35 460 x 225 x 460 18.1 x 8.9 x 18.1 8 17.64 9.5 21

FBT ELETTRONICA S.p.A. strive to improve their products continuously, and therefore reserve the right to make changes to the drawings and technical specifications at any time and without notice. FBT ELETTRONICA SpA – Recanati (Italy) | www.fbt.it | info@fbt.it

DIMENSIONAL DRAWING

KEIRON 8S
390mm / 15.35″

190mm / 7.48″ 390mm / 15.35″

CONTROL PANEL

ACCESSORIES

KR-W 8S
Wall Mount Bracket Code: 38894
675 x 70 x 285mm 26.57 x 2.75 x 11.22inch

FBT ELETTRONICA S.p.A. strive to improve their products continuously, and therefore reserve the right to make changes to the drawings and technical specifications at any time and without notice. FBT ELETTRONICA SpA – Recanati (Italy) | www.fbt.it | info@fbt.it

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