JAMO SUB 200 Посібник користувача - Сторінка 7

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In/Outputs

All the subwoofers features speaker level inputs if there is lack of a line level/LFE

level output on the amplifier/receiver.

All subwoofers also have both left and right line level input in case of stereo

sources and a loop through capability, i.e case the signal needs to be routed

through to a second subwoofer.

The SUB 650 also features a 12V trigger, allowing it to be turned on

automatically together with the receiver/controller if the receiver/controller has

the presence of such an output.

Drivers

The drivers used throughout the sub series are constructed with heavy magnet

systems , long VCs and very stiff paper membranes.

This enables a very fast attack and a high degree of control.

Sub 250

For the SUB 250 the woofer is an 8" driver with an

Ø 38mm 4-layer voice coil with an X-max at +/-10mm allowing for high

excursions. The heavy magnet system features a vented pole piece in order to

avoid over/under pressure behind the dust cap (mechanical damping) when

the cone is moving.

Sub 450 & 550

For the SUB 450 & 550 a 10" driver is chosen.

The driver features an Ø 38mm 4-layer voice coil with an X-max at +/-15mm

allowing for high excursions. The heavy magnet system features a vented pole

piece in order to avoid over/under pressure behind the dust cap (mechanical

damping) when the cone is moving.

Sub 650

For the SUB 650 a 12" driver is chosen . The driver features an Ø 50mm, 4-layer

voice coil with an X-max at +/- 18mm allowing for high excursions. The heavy

magnet system features a vented pole piece in order to avoid over/under

pressure behind the dust cap (mechanical damping) when the cone is moving.

Cabinets

All subwoofer cabinets are made of heavy MDF board, a solid and resonance

dead base for the drivers to work in.

However, the Slotted Bass reflex Port is probably the most remarkable feature

of the SUB 250, 450 and 550 cabinets.

The slotted port is an integral part of the construction, which braces the

surfaces, making the overall construction extremely rigid.

The Slotted Bass reflex Port is very long allowing a low tuning frequency

together with a large radiating area compared to a conventional round port,

giving a high efficiency and low distortion.