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SPECTRON BANDPASS SUBWOOFER 

Congratulations on your purchase of this SPECTRON bandpass
subwoofer system. 
Read and follow the operating and adjustment instructions for
this trunk box subwoofer model given below carefully, to
obtain best possible sound quality and performance from this
product.

KEY FEATURES

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LOADED WITH SPECTRON SP-S10/12 WOOFER 

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LARGE CROSS SECTION SLOT PORT FOR HIGH SPL

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CHROMED WOOFER GRILLE WITH BICOLOR 
LED ILLUMINATON

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MDF CABINET WITH INTERNAL BRACING

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SPACE SAVING SLOPED REAR WALL DESIGN

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CURVED ACRYLIC WINDOW FOR LOW FLEX 

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SPRING-LOADED TERMINAL

For safety and legal reasons, it might be prohibited using the box illumination while operating a car. Restrictions may apply
in certain countries. For making sure to follow all national traffic and vehicle regulations and not to distract drivers attention,
we recommend connecting the box illumination to the interior light of the trunk.

TECHNICAL SPECIFICATIONS

Model:

SP-110BP

SP112BP

Enclosure type: 

10” Bandpass Subwoofer

12” Bandpass Subwoofer

Frequency response: 

30 Hz – 120 Hz

25 Hz – 120 Hz

Nominal impedance: 

4 ohms

4 ohms

Sensitivity 1W/1m: 

90 dB

92 dB

Maximum power handling: 

400 W

500 W

Dimensions WxHxD: 

425 x 310 x 225/390 mm

485 x 375 x 235/435 mm

PLACEMENT OF BOX

This SPECTRON bandpass model is designed and engineered to be placed in the trunk of the car, to achieve full bass
perfomance and low end extension.  

POWER CONNECTION FOR LED ILLUMINATION

Connect the 3.5mm plug with the extension wire to the receptor inside the terminal. Connect the loose ends to an appropriate
switched 12V source like the trunk box illumination, if you intend to use the illumination feature of this product.  

AUDIO CONNECTION AND SETTINGS

Before any adjustments are attempted, “treble“, “bass“ and “loudness“ controls of the head-unit must be set to their neutral/zero
position. Your bandpass subwoofer needs a low-pass filtered signal with at least 12dB/oct. slopes for best results.

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Activate the lowpass function of the amp channel(s) driving your bass box.

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Set the lowpass crossover frequency of the channel(s) driving the sub to approx. 80 Hz

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Connect the speaker wire of your sub amp to the speaker terminal on the backside of the sub.  

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Increase the input gain of the subwoofer channel, until bass output is loud enough.

„In-phase“ connection of your subwoofer is critical – if your sub plays out of phase, the output at the  crossover frequency region
will be depressed due to cancellation effects. 
Thus one connection polarity of your sub will give you a „fatter“ and more dynamic bass reproduction in the 80Hz range. 
That’s the one to go for. 

manual SP-110BP_112BP:manual spectron 012W + WX  28.02.2008  15:06 Uhr  Seite 1

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