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Table of Contents
Related Manuals for JAMO D 7LCR
Summary of Contents for JAMO D 7LCR
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Page 1: Technical Description
Technical Description Jamo D 7 system... -
Page 2: Table Of Contents
Technical Description Contents: 1. General system description 2. The products: 2.1. D 7LCR 2.2. D 7SUR 2.3. D 7SUB 3. Driver explanation 3.1. Tweeter 3.2. Midrange 3.3. Woofer 3.4. (Sub) woofer 4. Electronics (D 7SUB) 5. Cabinets Jamo D 7 System... -
Page 3: General System Description
400 sq. ft. /40 sq. m., one subwoofer will be more than sufficient for rooms smaller than this. This is in fact one of the reasons why Jamo has chosen to make a more compact subwoofer – giving the consumer freedom of choice depending on his room size and personal preferences –... - Page 4 The black fabric is shaped with an arc shape over the “midrange/ tweeter array” in the centre and with a thin vertical aluminium line on each side of the arc. On the top of the front frame is an exclusive oval aluminium badge with the Jamo - and THX Ultra2 logo.
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Page 5: D 7Lcr
Of course the further away from the break up point the better. In D 7LCR the crossover frequency for the woofers is 400Hz and the diaphragm’s break up point occurs above 2k Hz. -
Page 6: D 7Sur
The dipolar surround speaker D 7SUR, use the same drivers as the D 7LCR. This is done to achieve seamless timbre matching with D 7LCR and to obtain the same high level of detail in the sound reproduction. D 7SUR is equipped with one 5½” woofer, four 2½”... -
Page 7: Tweeter
However, under certain circumstances this can create a problem, which is why THX Ultra2 decoders feature a Boundary Gain Compensation filter. filter compensates for the room influence at low This frequencies, as any room amplifies the lowest frequencies. The magnitude of the room’s amplification depends on the room and where you are positioned –... -
Page 8: Midrange
The magnet features a vented pole piece leading into a chamber at the backside. The chamber and the “ventilation hole” in the pole piece are tuned in for achieving the very low resonance frequency at 600Hz (normal res. freq. for a tweeter is around 1.5k Hz). The voice coil former is made of aluminium for optimum heat disposal. -
Page 9: Sub) Woofer
Amplifier The D 7SUB features a 400 Watt Class D amplifier that operates at a highly efficient 85%. This means that 85% of the power consumption is dedicated to the speaker, and only 15% is dissipated as heat. (Motional Feed... -
Page 10: Cabinets
Due to their compact size and the fact that the cabinets are made of MDF board, they are a heavy and resonance dead base for the drivers to work in. The MDF board used for the D 7LCR front baffle is 22 mm , the rear baffle is 25 mm, and the bottom/sides are 19 mm thick.