Bryston-10B-xo-sch维修电路原理图.pdf

RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 BRYSTON SST PERFORMANCE DRIVEN 1 Brystons Model 10B Electronic Crossover combines ideal signal-handling with an enormously flexible control function. Simple, direct front-panel switches allow any crossover curve to be set instantly, and the signal purity is always maintained. MODEL 10B LR The 10B-LR, a fixed frequency plug in Linkwitz-Riley alignment with steep roll off curves of 24 dB/Oct. is also available. The crossover may be used in any of three connections: 2-way stereo, 3-way mono, and a special configuration, 2-way stereo with summed low pass out to allow the use of one sub-woofer. The 10B is available in two stock versions, a 10B sub incorporating frequencies more suitable to sub-woofer applications and a 10B standard which is more applicable to speakers reacquiring frequency control in the midband and tweeter areas. All crossover selections are extremely accurate and repeatable, being implemented with 1% selected metal-film resistors and polystyrene capacitors. All switches are heavily gold- plated, for lifetime protection from corrosion. The level- controls are precise 1dB increments, also derived from gold-plated switches and 1% metal-film resistors. Most important, however, is that the Bryston 10B Crossover uses NO integrated circuits in the signal path. All internal buffer and amplification stages are Brystons exceedingly linear and superbly quiet discrete op-amp circuitry. This means the signal is always maintained as “Audiophile Quality”, with stability and freedom from noise and distortion unapproached in other crossovers. From the point of view of adaptability, flexibility and signal integrity, the Bryston 10B Electronic Crossover is the ideal choice for the widest range of multi-way speaker installations. 10 B ELECTRONIC CROSSOVER The Model 10B features independently selectable crossover points for high-pass and low-pass, in case the speaker installation requires slightly overlapped, (or slightly staggered), response curves for the drivers. You can also independently select crossover slope, from 6, 12, or 18dB/Oct., where one driver requires raster cutoff than another in the same system. (I)(J)(K)(L)(K)(J)(I) 2 (A) MUTE SWITCH One each for low pass and high pass filters (B) LOW PASS FREQUENCY SELECTOR 12 selectable crossover points (C) LOW PASS SLOPE SELECTOR Sets low pass slope in decibels per octave (6, 12 or 18dB/Oct.) (D) HIGH PASS LEVEL CONTROL Sets high pass output level for channel. -5dB to + 5dB in 1dB steps. (E) HIGH PASS SLOPE SELECTOR Sets high pass slope in decibels per octave (6, 12 or 18dB/Oct.) (F) HIGH PASS FREQUENCY SELECTOR 12 selectable crossover points (G) STATUS LEDS (H) POWER SWITCH (PUSH BUTTON) (I) INPUT RCA OR XLR (FEMALE) (J) LOW PASS OUTPUT RCA OR XLR (MALE) (K) HIGH PASS OUTPUT RCA OR XLR (MALE) (L) MODE SELECTOR SWITCH Selectable frequencies 10B standard Selectable 40 Hz, 50 Hz, 60 Hz, 70 Hz, frequencies* 80 Hz, 90 Hz, 100 Hz, 200 Hz, 10B sub 250 Hz, 300 Hz, 400 Hz, 500 Hz Slope 6/12/18 dB per Oct. S/N ratio -90 dB Distortion 0.005% Input 15k ohms, unbalanced impediance 15k ohms, balanced Output 100 ohms impediance Features Stereo 2-way Monaural 3-way Stereo 2-way summed low pass Balanced or unbalanced Independent high and low pass frequency selection 5dB gain on high pass section Internal adjustments for up to 10 dB Dimensions 19 or 17 x 1.75 x 10 inches, 48.25 or 43.18 x 4.44 x 25.4 cm wt: 12 lbs, 5.5 kg * Custom frequencies available on request * 24 dB per octave with plug-in frequency modules also available Balanced version also available (B) (C)(D)(E) (F) (A)(G)(H)(A) (B) (C)(D)(E) (F) (A) 10B SWITCHING AND CONNECTIONS 70 Hz, 100 Hz, 140 Hz, 200 Hz, 300 Hz, 450 Hz, 700 Hz, 1 kHz, 2 kHz, 3 kHz, 4.5 kHz 23 The Bryston PowerPac Amplifiers are a modular monaural version of our very popular stereo amplifiers but designed to be utilized in applications where portability, sound quality and flexibility are of prime importance. The PowerPac Amplifiers are a perfect choice for use as a portable power amplifier which can be attached directly to the rear of your loudspeaker. This provides for the use of very short speaker leads resulting in a much improved loudspeaker/ amplifier interface. The PowerPac Amplifiers can also be bolted on the wall for utilization in audio/video surround systems (left/right/center/rears/backs) where a non-conspicuous power module is required. A further application would be in multi-room audio systems where single or multiple amplifiers are needed to provide music in adjacent rooms. Finally, with the recent popularity in passively or actively amplifying the individual drivers in your stereo loudspeakers the Bryston PowerPacs would be ideal for use in this capacity. POWERPAC 120 SST MONAURAL AMPLIFIER The Bryston PowerPac 120-SST amplifier, is a superior quality, modular, single channel power amplifier delivering 120 watts at 8 Ohms, or 200 watts into 4 Ohms. The PowerPac 120-SST is essentially a monaural version of our very popular 3B-SST stereo amplifier but intended for use in applications where portability and flexibility are of prime importance. POWERPAC 300 SST MONAURAL AMPLIFIER The Bryston PowerPac 300-SST amplifier, is a superior quality, modular, single channel power amplifier delivering 300 watts at 8 Ohms, or 400 watts into 4 Ohms. The PowerPac 300-SST is essentially a monaural version of our very popular 4B-SST stereo amplifier but intended for use in applications where portability and flexibility are of prime importance. VERSATILE FEATURES Allows direct attachment or adjacent placement to loudspeakers. On-wall mounting. Easy application in any multiple driver active or passive stereo system. Balanced or unbalanced operation at the flick of a switch. Gold plated 5-way banana jacks, RCA and XLR connectors. Level control adjustment. Detachable power cord. POWERPAC SPECIFICATIONS SLEWING RATE Greater than 60 volts per microsecond POWER BANDWIDTH Less than 1Hz to over 100kHz DAMPING FACTOR Over 500 at 20Hz, ref. 8 ohms IMPEDANCE 50k unbalanced, 20k balanced FEATURES Regulated power supplied to all voltage gain stages Gold plated input and output connectors Switchable balanced XLR -1/4” and RCA unbalanced inputs Remote power turn-on. 12 v AC/DC Power Clipping Indicator POWERPAC SST MONAURAL AMPLIFIERS POWER PAC 60 SST MONAURAL AMPLIFIER The Bryston PowerPac 60-SST amplifier, is a no-compromise, modular, single channel power amplifier delivering 60 watts at 8 Ohms, or 100 watts into 4 Ohms. The PowerPac 60 is a modular monaural version of our very popular 2B-LP stereo amplifier but designed to be utilized in applications where portability, sound quality and flexibility are of prime importance. 4 POWER PAC COMPARISON CHART POWERPAC 300 SSTPOWERPAC 120 SST MODEL WATTSDISTORTIONNOISEINPUT SENSITIVITY AND IMPEDANCE DIMENSIONS POWERPAC 60 SST 60 watts 8 ohms 100 watts 4 ohms 101dB below full output .75V in for 60 watts out 8 ohms 50k unbalanced, 20k balanced 12 x 1.8 x 7.1 inches 30.5 x 4.7 x 17.9 cm wt: 5 lbs, 2.6 kg POWERPAC 120 SST 120 watts 8 ohms 200 watts 4 ohms 104dB below full output 1.0V in for 100 watts out 8 ohms 50k unbalanced, 20k balanced 12 x 3.6 x 7.25 inches 30.5 x 9 x 18.3 cm wt: 10 lbs, 4.5 kg POWERPAC 300 SST 300 watts 8 ohms 400 watts 4 ohms 106dB below rated output 1V in for 100 watts 8 ohms 50 Kohms unbalanced 20 Kohms balanced 17 x 8.4 x 4.5 inches 43 x 21 x 11.5 cm wt: 24 lbs, 11 kg POWERPAC 60 SST We at Bryston, do not think cables should be voiced to sound a specific way. The best cable is NO cable at all so we contend that the best cable is the cable that changes the signal the least. The geometry (where the plus is relative to the minus) of a cable determines the inter-relationship between the measured performance of a specific cable. These measured performance criteria are call the Primary Constants. They are R-resistance, L- inductance, C- shunt capacitance and G-shunt conductance. You can play around with all types of exotic packaging and add-on appendages you like but ultimately the measured performance (primary constants) tell the tale. COAX INTERCONNECT CABLES An analogue Preamp/Amplifier connection is a high impedance interface therefore; you are looking for low measured Capacitance. An interconnect cable acts like a capacitor in the signal path so the better that capacitor the better the interconnect. We use an interconnect wire with (very low capacitance) and the RCA connectors are made for us in Switzerland. The RCA cables make and break ground first and last when connecting and disconnecting. This prevents ugly pops and bangs from going through your system with the possible negative results. XLR INTERCONNECT CABLES The XLR cables we use are also very low in capacitance. Actually the XLR cable we are currently using is in fact low noise balanced microphone cable with 100% shield coverage against RF. The advantage of Balanced XLR cables is that they have a noise canceling effect know as common mode noise reduction. This helps prevent noise and hum from affecting your system. With todays complexity of audio and video surround systems this is a big plus, so if you got em-use em. DIGITAL CABLES VIDEO CABLES Video cables also operate at very high frequencies - typically 5-6 MHz for Composite and S-Video and 8-30 MHz for Component Video depending on the scan rate and resolution. So again understanding the wavelengths of the signals and interfaces involved is important. 5 BRYSTON INTERCONNECT CABLES BRYSTON ANALOG/DIGITAL/VIDEO CABLE BRYSTON BALANCED XLR CABLE With Digital interconnects things are a lot different. The wavelengths of digital signals are very short (same for FM) so the lengths and terminations are much more critical than with the analogue signals previously discussed. When the wavelength of the signal the cable is used for approaches 1/30th of the length of the cable then transmission line effects start to appear and much more attention has to be paid to the connection and termination. If not then reflections and cancellation of data is a real possibility. For instance the AES/EBU digital connection on the back of the Bryston SP2 should be used with a cable having an impedance of 110 ohms. I6 BRYSTON SPEAKER CABLES SPEAKER CABLES The Amplifier/Speaker interface is a low impedance connection. Therefore, in a speaker cable you are looking for low self inductance (because inductance rolls off the top end) as opposed to low capacitance required in the RCA or XLR analogue interconnect. For speaker cables we use a stranded 9 gauge linear crystal copper with Heavily Gold plated Spade lugs or Expandable Banana plugs specially made for Bryston. IN SUMMARY: 1. The connection should be of similar metals (preferably gold) and be airtight. If not airtight it will break down molecularly over time and begin to rectify or produce a diode effect on the signal. 2. With all the RF floating around today the better the Shield on the interconnect the less intrusive the RF will be. 3. The connection between your analogue Source components (Preamplifier, CD Player, Tuner, DVD Player etc.) is a High Impedance connection and the interface between your power amplifier and your speakers is a Low Impedance connection. So, the requirements are totally different for optimizing these interfaces. 4. Digital and Video cables are much more susceptible to reflection/phase/cancellation problems because of their short wavelengths relative to cable length. As you can see from the above, no surprise that people hear differences in cables when connected to the variety of equipment in the market today. Given the differences in input and output impedances between transistor and tube gear, the lack of understanding of the high impedance and low impedance interfaces, the world of RF, and the digital/video connection issues no wonder we have these differences of opinion. RECOMMENDATIONS: Bryston highly recommends keeping the speaker wires as short as possible and utilizing XLR balanced lines if available. Given the choice of long interconnects and short speaker leads or short interconnects and long speaker leads choose long interconnects (preferably Balanced) and short speaker leads. With digital and video cables finding out the sending and termination requirements is very important due to the very short wavelengths relative to cable lengths involved. BRYSTON SPEAKER CABLE BRYSTON SPADE BRYSTON BANANA BRYSTON 5YEAR CABLE WARRANTY Canadas largest independent manufacturer of high-end audio electronics for consumers and professionals Founded 1962 Bryston Limited P.O. Box 2170, 677 Neal Drive, Peterborough, Ontario, Canada K9J 7Y4 1-800-632-8217 bryston.ca In a world where most things seem to need frequent upgrading, repair, or replacement, how can Bryston offer a comprehensive, unconditional, and fully transferable warranty on every audio product we make? The answer would quickly become apparent if you were to tour Brystons plant in Peterborough, Ontario, Canada. State-of-the-art design facilities, with the latest CAD and circuit simulation software, and an inventory of some of the best and most reliable parts on the planet, combine with a manufacturing philosophy that eschews the artifacts of mass production robots, moving assembly lines, and, frankly, shortcuts. Every Bryston audio component is handcrafted by people who take great pride in building the very best. Starting with a bare circuit board, for example, each component is hand selected and installed, every wire is cut and bent by hand, every connection is hand soldered. On average, it takes thirty to thirty-five person-hours to assemble a single Bryston product. Is this just some romantic 19th-century notion of the artisan-craftsman, or is there a real benefit to you, the consumer? There is. Take the hand soldering, for example. We could do the job much faster by employing wave-soldering machines as many companies do. But that would mean exposing the entire circuit board to a molten-metal bath, a source of extreme heat shock that could result in long-term reliability problems. We dont skimp on testing or rush our products through some last-minute go/no-go check; at every stage individual parts, completed circuit-boards, sub-assemblies, and final assemblies are all put through rigorous inspection and testing procedures. When completed, every Bryston amplifier receives a comprehensive and carefully documented test of all its functions, and the printed results of this computer-aided analysis are actually packed and shipped with each unit. During this intensive procedure, we not only reject any product that falls outside of our advertised specifications, but also any not meeting an even narrower band of specifications that we use for internal testing. As a result, you can expect each Bryston product to perform