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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Soundstream 705s, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Soundstream 705s one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Soundstream 705s. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Soundstream 705s should contain:
- informations concerning technical data of Soundstream 705s
- name of the manufacturer and a year of construction of the Soundstream 705s item
- rules of operation, control and maintenance of the Soundstream 705s item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Soundstream 705s alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Soundstream 705s, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Soundstream service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Soundstream 705s.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Soundstream 705s item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
1 REFERENCE 705s 5/3 Channel Power Amplifier OWNERS MANUAL AND INS TALLATION GUIDE[...]
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Page 2
2 CONGR ATULATIONS! You now own the REFERENCE705s Amplifier , the product of an uncompromising design and engineering philosophy. Your Soundstream REFERENCE amplifier will outperform any other amplifier in the world. To maximize the performance of your system, we recommend that you thorou ghly acquaint yourself with its capabilities and features. P[...]
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Page 3
3 TABLE OF CONTENTS Features .............................................................................................................. 4 - 5 REFERENCE705s Diagram ................................................................................ 6 - 7 REFERENCE Power Supply Design .................................................................[...]
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Page 4
4 DESIGN FE ATURES • Uncompromising Design and Construction including mil - spec glass epoxy circuit boards and high current custom gold - plated solid brass connections that will accept up t o 4 gauge power/ground wire. • High Power/High Current Capability (subwoofer channel only) - Soundstream’s exclusive circuitry permits customization of [...]
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Page 5
5 be stable into any impedance, down to 1/2 ohm. • Six Dual Discrete Class A Drive Stages - Over six times the drive current of most amps, which guarantees maximum performance into any load. • Drive Delay TM Muted Turn - on/off Circuit - A unique circuit which completely eliminates amplifier - related turn - on/off noises. • Flexible Input Se[...]
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Page 6
6 Reference705s[...]
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Page 7
7 Key to Callouts 1. Fault LED - Indicates a blown fuse. 2. High Power LED - Indicates amplifier power on in "High Power" mode. 3. High Current LED - Indicates amplifier power on in "High Current" mode. 4. Main Fuse - Main power supply fuse. 5. +12V - Connected to a fuse or circuit breaker, then to the battery's positive po[...]
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Page 8
8 4 Ohm Sub Channel Watts 12 volts 14.4 volts 0 50 100 150 200 250 REFERENCE POWER SUPP LY DESIGN The Reference705s employs an extremely efficient unregulated pulse - width modulated power supply. Like the rest of the REFERENCE amplifiers from Soundstream, the Reference705s is rated at 12 volts but is designed to take advantage of the additional vo[...]
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Page 9
9 INS TA LL ATION STEP 1 SETTING THE HIGH POWER/HIGH CURRENT SWITCH (applies to subwoofer channel only) The Reference705s’ subwoofer channel can be switched between “High Power” and “High Current” modes. This allows the Reference705s to maximize power and efficiency at impedances ≥ 1 Ohm in “High Power” mode, or down to 1/2 Ohm in ?[...]
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Page 10
10 SELECTING THE CROSSOVER MODES The Reference705s incorporates a sophisticated, fully adjustable electronic crossover for each of its two pairs of channels and subwoofer channel. The Reference705s can drive a full system without need of an outboard electronic crossover. Before installing the amplifier, make certain the switches on the bottom are s[...]
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Page 11
11 SELECTING INPUT MODES The Reference705s can be driven with either one, two, or three pairs of stereo inputs. If your source unit has front and rear outputs, you can take advantage of its fading capability by driving the Reference705s in 5 channel mode with two pairs of inputs . When operated in the 5 channel mode with 2 pairs of inputs, the lowp[...]
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Page 12
12 INS TA LL ATION STEP 5 WIRING POWER AND GROUND To assure maximum output from the Reference705s, use high quality, low - loss power and ground cables. The Reference705s will accept up to 4 gauge power and gr ound cables, which is the only size recommended. For system examples and diagrams, see pages 18 - 21. COHERENT STEREO™ / BRIDGED MONO The [...]
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Page 13
13 WIRING DIAGRAM WIRING (continued) CIRCUIT BREAKERS/FUSES EXTERNAL Like all car audio amplifiers, the Reference705s must be protected with a fuse or circuit breaker located within 18” of the batt ery. This will prevent a fire in the event of a shorted cable. The value of the circuit breaker or fuse should be between 60 and 80 amps. INTER NAL Th[...]
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Page 14
14 INS TALLATION AND MOUNTING 1. AMPLIFIER LOCATION The Reference705s employs highly efficient circuitry and Soundstream's unique Chassisink TM design to maintain lower operating temperatures. Additional cooling may be required if the amplifier is located in an area wit h poor air flow, or when driving especially low impedance loads at extreme[...]
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Page 15
15 INS TA LL ATION STEP 7 LEVEL SETTING The input levels are adjusted by means of the input level controls located on the front of the amplifier. This is a unique dual - stage circuit that adjusts both level and gain. This topology maintains better Signal to Noise ratio s even with low output sources. In the ideal situation, all components in the a[...]
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Page 16
16 CROSSOVER ADJUSTMENTS In most car audio ins tallations, there is a tendency for a “midbass boom.” Because of their interior dimensions, most cars will resonate or ring at these midbass frequencies. If we design the system so there is less musical information in this region, the final response is v ery smooth and natural sounding. The Referen[...]
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Page 17
17 INS TA LL ATION STEP 9 LSE.Q THEORY AND USE LSE.Q is a proprietary subwoofer control circuit included with the Reference705s amplifier. It is capable of both removing subsonic energy in program material and providing a variable boost at low frequencie s. The circuit consists of two controls. One adjusts the frequency of operation, and the other [...]
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Page 18
18 SAMPLE SYSTEM #1 2 - way front to rear fade with constant bass 4 channels of input 4 channels of 2 - way high pass, sub channel in low pass[...]
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Page 19
19 SAMPLE SYSTEM #2 3 - way with midrange bandpass 2 channels of input 2 channels of tweeter high pass, 2 channels of midrange[...]
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Page 20
20 SAMPLE SYSTEM #3 3 - way with midbass bandpass and subwoofer to midbass/satellite fading 4 channels of input 2 channels of midbass bandp ass, 2 channels of high pass, sub channel in low pass (High Current; < 1 Ohm)[...]
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Page 21
21 SAMPLE SYSTEM #4 2 - way in 3 channel mode with fading bass 4 channels of input 2 channels of bridged high pass, sub channel in low pass[...]
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Page 22
22 PROTECTION CIRCUITRY Your Reference705s is protected against both overheating and short circuits by means of the following circuits: • Main power supply fuses (Maxi - fuse at 40 amps) • Smart Power Supply Thermal Rollback activating at 85°C. • A fail - safe thermal protection circuit activating at 95°C. • Self - resetting circuit break[...]
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Page 23
23 SPECIFIC ATIONS POWER OUTPUT CROSSOVER SPECIFICATIONS (all continuously variable): 2 - way High Pass: 12 dB/octave, 60 - 240 Hz Low Pass: 24 dB/octave, 30 - 120 Hz 3 - way Tweeter High Pass/Midrange Low Pass: 12 dB/octave, 1 K - 4 KHz Midran ge or Midbass High Pass: 12 dB/octave, 60 - 240 Hz Mid High Pass/Midbass Low Pass: 12 dB/octave, 240 - 96[...]
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Page 24
24 SOUNDSTREAM TECHNOLOGIES 120 Blue Ravine Road Folsom Ca lifornia 95630 USA[...]