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Summary of Contents for ModWright Instruments LS 300
- Page 1 LS 300 Owner’s Manual Manufactured by ModWright Instruments, Inc. www.modwright.com...
- Page 2 Home Theater Pre/Processor or other source WITH built in volume control. When the LS 300 is powered down, the HT/BP input defaults to HT/BP mode. When unit is powered up, any source connected to HT/BP input may be operated in HT/BP mode.
- Page 3 Only after this, should the power cord be connected to the external power supply. The LS 300 has two sets of fully balanced inputs, located on the back of the unit, labeled ‘BAL IN 1’ and ‘BAL IN 2’. The next two inputs are single ended RCA connections, labeled ‘III’...
- Page 4 You may ONLY operate both XLR and RCA outputs at the same time with the Ground toggle in the GND(0) position. You may only operate the XLR outputs in fully balanced mode with the ground toggle in the GND(1) position. In this setting, the preamp will operate with fully balanced XLR outs ONLY, but not RCA and XLR outs at the same time.
- Page 5 The left rotary knob is input select and the right rotary knob is volume control. The power button is located to the right of the input selector knob. The Power LED will illuminate when the unit is powered on. The aesthetics of the LS 300 are intentionally spare and elegant.
- Page 6 LS 300 in HT/BP mode, signal level is controlled by the preamp/processor before entering the HT/BP input of the LS 300 and routed straight to the main outs, connected to the front L/R channel amplifier(s). In Home Theater Bypass (HT/BP) mode, the preamp is essentially out of the circuit, acting only as a straight-wire to the signal.
- Page 7 Vacuum Tubes: The LS 300 uses two 6922 (6dj8 or 7308) signal tubes and two (5AR4 or equivalent) rectifier tubes in the preamp. The tubes operate at moderately high temperatures. Care should be taken when replacing or removing tubes after being in recent use and after being disconnected from AC power.
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Page 8: Technical Specifications
Technical Specifications: Tube Complement: (2) 6922/6dj8/7308 signal tubes, (2) 5AR4/GZ34 (or equivalent) rectifier tube. Gain: ~10dB. Input Impedance: 30Kohm. Output Impedance: ~110ohm. Frequency Response: 10Hz – 150Khz (-1dB) Noise Level: -110dB. Weight: 29 lbs. (34 lb. packed) Dimensions: 17-1/2”W x 12-1/2”D x 4-3/4”H. Basic Specifications: (2) Pair XLR inputs, (2) pair RCA Inputs. -
Page 9: Design Philosophy
Design Philosophy: The LS 300 was designed to offer World-Class Performance. It uses the best components and proprietary circuitry to offer a full, fast and accurate recreation of the entire frequency range. Bass is deep, tight and authoritative and high frequencies sparkle. The tonal balanced is designed to be accurate and detailed without edge or glare. - Page 10 Warranty: All ModWright Instruments products are warranted for a full five years from date of purchase. Any problems with unit not attributed to abuse, neglect or mistreatment shall be covered at no cost to owner. Customer will be responsible for all shipping costs. Tubes are warranted for a period of three months following date of purchase.
- Page 11 Contact Information: If you have any questions about ModWright Instruments products or ModWright modifications or products, please do not hesitate to contact us via phone, e-mail or conventional mail. PH: 360-247-6688 EMAIL: info@modwright.com ADDRESS: ModWright Instruments Inc. 21919 NE 399 Amboy, WA 98601 Thank you for purchasing a ModWright Instruments product.
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