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Table of Contents
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Summary of Contents for JAMO 250
- Page 1 Technical Description Jamo SUB 250, 300, 550, 650...
- Page 2 The Products SUB 250 SUB 250 is the smallest subwoofer in the line up. But do not let this deceive you. With an long-throwing 8” subwoofer driver housed in a Slotted Bass reflex Port cabinet...
- Page 3 Many subwoofers fall of very drastically above 100Hz (or some even under, see picture 2) making them very hard to integrate with small speakers. Of course the SUB 250 is also well suited for use together with bookshelf or floorstanding speakers when there is a need for additional low frequency Picture 2 used here as in the SUB 250.
- Page 4 The SUB 650 is intended for high performance bookshelf and floorstanding speaker systems. The SUB 650 is capable of reaching down to 24 Hz which is why we have here incorporated the continuously variable Boundary Gain Compensation for optimum integration into the home environment.
- Page 5 Electronics The important things on subwoofer amplifiers are the ability to deliver high power – especially peak burst are important to reproduce e.g. an explosion or a bass drum with full fidelity. This has to be done with a minimum of distortion and a very tight control of the woofer.
- Page 6 Most of today’s subwoofers have an auto on/standby feature whereby the subwoofer switches itself on if it senses a signal and switches in standby mode again a certain time after it has last sensed a signal. However, in movies (or typically classical music) with relatively quiet passages the subwoofer can switch to standby mode thereby “missing”...
- Page 7 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.
- Page 8 In normal setup, the port is radiating towards the rear wall, giving an even higher efficiency at very low frequencies.
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Page 9: Technical Specifications
Technical Specifications SUB 250 Speaker name Slotted Bass reflex System Port 8” down firing Woofer Peak power [W] 30-150 +3dB Frequency range [Hz] 22 kOhm Impedance [Ohm] 12 V trigger Yes, variable Phase 40-150 Cut off frequency [Hz] Limiter Boundary Gain. Comp.
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