Legacy Thumper Owner'S Manual Download | Manualshive

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Summary of Contents for Thumper

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Page 2: ...stration 3 Owners Record 4 The Cabinetry Our Commitment Setup 5 Unpacking Your Speakers 6 Speaker Placement Installation 8 Hook up Cables 10 Speaker Connections Technology 13 Designer s Note 15 Specifications ...

Page 3: ... product Model No _______________________________ Serial No _______________________________ Date of purchase _________________________ Thank you for selecting a Legacy Loudspeaker System These hand crafted instruments will provide you with many years of listening enjoyment Please take a few moments to read this brief manual to insure maximum benefit from your speaker system ...

Page 4: ...bruised knuckles Each cabinet is impeccably finished on all exposed surfaces with select veneers The exquisite finish is hand rubbed several times to assure a patina at home with the most elegant decor Our Commitment A great deal of forethought love and satisfaction is instilled in each piece of Legacy workmanship We take pride in getting to know many of our customers on a first name basis Your pu...

Page 5: ...ected by a double wall outer carton with heavy V board corner protectors Molded foam end caps are used to protect the elegant cabinetry and a plastic liner is provided as waterproofing Please save this packing for future transportation If cartons become damaged or misplaced new ones can be purchased from Legacy Audio ...

Page 6: ... ceiling correspond to the wavelengths of the frequencies which will reflect in phase and thus reinforce bass output Therefore the actual dimensions of your listening room play a definite role in what ultimately arrives at your ear In fact rooms tend to have their own set of favored frequencies We can calculate what the most strongly reinforced frequencies in a room will be by the formula shown be...

Page 7: ...ance if the subwoofer is 2 ft from one corner wall then place it 1 5 ft to 3 ft from the other Placing the subwoofer in a corner will reduce the radiation angle and thus increase efficiency It will also excite the maximum number of room modes and decrease distortion A best case scenario is to actually use two subwoofers one to each side of the listener The subs should be placed 90 out of phase wit...

Page 8: ...nsidered insignificant in each cable because its effect is well out of the audio bandwidth inductance can be decreased at the expense of increased capacitance by keeping the conductor pair closely spaced How long would a cable have to be before inductance effects would impinge on the audio spectrum Approximately 300 feet of 12 gauge would be required to establish a corner frequency of 20 kHz with ...

Page 9: ...s What about resistance Finally we are getting somewhere Resistance is the controlling factor of the amplifier loudspeaker interface Excessive resistance can cause major shifts of speaker crossover frequencies The lower the impedance of the loudspeaker the greater the effects of series resistance A 20 foot run of 18 gauge cable can cause up to 10 deviations of crossover center frequencies That sam...

Page 10: ...he signal If using Left Right output jacks from the preamp the internal circuit module of the Thumper will sum the two channels together When using the left and right low level inputs on the subwoofer the internal crossover of the subwoofer is being used The crossover frequency and level will be controlled by the appropriately labeled controls on the back panel of the sub Connect the preamp proces...

Page 11: ...ct to the subwoofer The fixed outputs allow the signal to pass through without being effected by the StepOne Whisper Processor s processor Biamping If you are biamping your front channels the variable output from the StepOne Whisper Processor will be used to feed the low frequency amplifier input The fixed outputs of the StepOne Whisper Processor would require a Y adapter or signal splitter such a...

Page 12: ...elow 100 Hz to the main speakers A more precise management is possible through some surround processors NOTE 1 DO NOT use the output from a bridged amplifier output as a high level input to the subwoofer 2 When using high level inputs from a stereo amplifier be sure that they are polarized correctly with the power amplifier positive output to positive input negative output to negative input Failur...

Page 13: ...rest of your audio system as this will avoid hum from ground loops 2 Power Switch The power switch is on the upper left of the rear panel Three settings are available Off Auto On In the Off mode the amp is turned off In the Auto position the amp will remain off until a signal is applied After a long period with no signal the sub will return to its off state The On position will cause the amp to st...

Page 14: ...y This unit is bolted in compression to secure nearly 20 lbs of motor structure A high current 200 watt amplifier maintains control of Thumper s 12 sub bass piston Thumper features automatic turn on off when presented with an audio signal The high pass filter alleviates the deep bass demands from compact satellite speakers thus preventing low frequency strain due to long excursion A special Therma...

Page 15: ...Low Pass Filter Slope 18 dB per octave Maximum SPL 112 dB 40 Hz High Pass Crossover 85 Hz 6 ohms High Pass Slope 12 dB per octave Binding Posts 2 RCA 2 pair High Level binding posts Phase Adjustment 0 180 Frequency response 28 160 Hz 3 dB Input Impedance 10k ohms minimum low level inputs Dimensions 17 1 2 H x 14 3 4 W x 17 3 4 D Weight 40 lbs ...

Page 16: ...16 Notes ...

Page 17: ...17 2003 Legacy Audio 150 Locust Street Macungie PA 18062 Phone 610 965 0494 Fax 610 965 4915 ...

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