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Technical support servicesPlease read this installation guide before you install your new drive. If you are not familiar with the proceduresoutlined here, have a qualified computer technician perform the drive installation. If you need assistance installing this drive, first consult your dealer, who can help you with system conflicts and other technical issues. If you need additional assistance, use one of the services listed below,408-456-4496.SeaBOARD: Australia 61-2-9756-2359Singapore England 44-1628-478011Taiwan France 33 1-48 25 35 95Thailand Germany49-89-140-9331USASeaTDD:specialist.Internet Connections:Compuserve Forum:L I M I T E D W A R R A N T Y S T A T E M E N TS e a g a t e w a r r a n t s t h a t y o u r S e a g a t e d i s c d r i v e w i l l b e f r e e f r o m d e f e c t s i n m a t e r i a l a n d w o r k m a n s h i p a n d w i l l p e r f o r m t o S e a g a t e ’s a p p l i c a b l e s p e c i f i c a t i o n s f o r S e a g a t e ’s t h r e e -y e a r w a r r a n t y p e r i o d . T h e w a r r a n t y p e r i o d w i l l b e c a l c u l a t e d f r o m t h e d a t e o f o r i g i n a lp u r c h a s e .S e a g a t e w i l l r e p l a c e , a t n o c h a r g e , a n y d r i v e t h a t d o e s n o t m e e t o u r w a r r a n t y . T h e d r i v e m u s t b e r e t u r n e d i n t h e p a c k a g i n g p r o v i d e d b y S e a g a t e w i t h t r a n s p o r t a t i o n c h a r g e sp r e p a i d t o t h e a u t h o r i z e d S e a g a t e d e s t i n a t i o n .T h i s w a r r a n t y i s v o i d i f d e f e c t h a s r e s u l t e d f r o m a c c i d e n t , a b u s e , u n a u t h o r i z e d r e p a i r o rm i s a p p l i c a t i o n .W I T H R E G A R D T O T H E D I S K M A N A G E R S O F T W A R E , T H E R E A R E N O W A R R A N T I E S O FM E R C H A N T A B I L I T Y O R F I T N E S S F O R A P A R T I C U L A R P U R P O S E A N D A L L S U C HW A R R A N T I E S A R E E X P R E S S L Y A N D S P E C I F I C A L L Y D I S C L A I M E D .D I S C L A I M E R : E X C E P T F O R T H E A B O V E E X P R E S S L I M I T E D W A R R A N T I E S O R C O N D I T I O N S , S E A G A T E M A K E S N O W A R R A N T I E S O N T H E P R O D U C T S , E X P R E S S ,I M P L I E D , O R S T A T U T O R Y , A N D S E A G A T E S P E C I F I C A L L Y D I S C L A I M S A N Y I M P L I E D W A R R A N T Y O R C O N D I T I O N O F M E R C H A N T A B I L I T Y O R F I T N E S S F O R A P A R T I C U L A R P U R P O S E . T h i s l i m i t e d w a r r a n t y g i v e s y o u s p e c i f i c l e g a l r i g h t s . Y o u m a y h a v e o t h e r s ,w h i c h v a r y f r o m s t a t e t o s t a t e .I N N O E V E N T W I L L S E A G A T E ’S L I A B I L I T Y O F A N Y K I N D I N C L U D E A N Y L O S T P R O F I T S ,L O S S O F U S E , L O S S O F D A T A , O R A N Y S P E C I A L , I N C I D E N T A L , O R C O N S E Q U E N T I A L D A M A G E S , E V E N I F S E A G A T E H A S K N O W L E D G E O F T H E P O S S I B I L I T Y O F T H E P O T E N T I A L L O S S O R D A M A G E . S o m e s t a t e s d o n o t a l l o w f o r t h e e x c l u s i o n o r l i m i t a t i o n o f l i a b i l i t y f o r c o n s e q u e n t i a l o r i n c i d e n t a l d a m a g e s , a s s u c h , t h e a b o v e l i m i t a t i o n s m a y n o t a p p l y t o y o u .D o c u m e n t a t i o n : S e a g a t e T e c h n o l o g y m a k e s n o w a r r a n t y o f a n y k i n d w i t h r e g a r d t o t h i s m a t e r i a l , i n c l u d i n g , b u t n o t l i m i t e d t o , t h e i m p l i e d w a r r a n t i e s o f m e r c h a n t a b i l i t y a n d f i t n e s s f o r a p a r t i c u l a r p u r p o s e . S e a g a t e T e c h n o l o g y s h a l l n o t b e l i a b l e f o r e r r o r s c o n t a i n e d h e r e i n o r f o r i n c i d e n t a l c o n s e q u e n t i a l d a m a g e s i n c o n n e c t i o n w i t h t h e f u r n i s h i n g , p e r f o r m a n c e ,o r u s e o f t h i s m a t e r i a l. S e a g a t e r e s e r v e s t h e r i g h t t o c h a n g e , w i t h o u t n o t i c e , p r o d u c to f f e r i n g s o r s p e c i f i c a t i o n s .S e a g a t e ®, S e a g a t e T e c h n o l o g y ® a n d t h e S e a g a t e l o g o a r e r e g i s t e r e d t r a d e m a r k s o f S e a g a t e T e c h n o l o g y , I n c . S e a F O N E T M , S e a T D D T M , S e a B O A R D T M a n d S e a F A X T M a r e t r a d e m a r k s o f S e a g a t e T e c h n o l o g y , I n c . O t h e r p r o d u c t n a m e s a r e r e g i s t e r e d t r a d e m a r k s o rt r a d e m a r k s o f t h e i r o w n e r s .© 1996 S e a g a t e T e c h n o l o g y , I n c . A l l r i g h t s r e s e r v e d .N o p a r t o f t h i s p u b l i c a t i o n m a y b e r e p r o d u c e d i n a n y f o r m w i t h o u t w r i t t e n p e r m i s s i o n f r o m S e a g a t e T e c h n o l o g y , I n c . P /N 21200049-001, R e v . A , S e p t . 1996I M P O R T A N T P R E C A U T I O N S•D o n o t f o r m a t y o u r n e w d r i v e b e f o r e r e a d i n g t h e i n s t r u c t i o n s i n t h i s m a n u a l . F o r m a t t i n g t h e d r i v e r e m o v e s t h e D i s k M a n a g e r s o f t w a r e t h a t i s s u p p l i e dw i t h t h e d r i v e .•A l w a y s h a n d l e t h e d i s c d r i v e c a r e f u l l y , h o l d i n g i t s e d g e s o r f r a m e . D o n o t t o u c h t h e c o n n e c t o r s o r a n y p a r t o f t h ep r i n t e d c i r c u i t b o a r d .•K e e p t h e d r i v e i n i t s a n t i s t a t i c b a g u n t i l y o u a r e r e a d y t oi n s t a l l i t .•S e t t h e d r i v e d o w n o n l y o n a f l a t , p a d d e d , n o n -s t a t i cs u r f a c e .•T h i s d r i v e i s s u s c e p t i b l e t o d a m a g e f r o m e l e c t r o s t a t i c d i s c h a r g e . B e f o r e h a n d l i n g t h e d r i v e , g r o u n d y o u r s e l f b y t o u c h i n g t h e g r o u n d e d c h a s s i s o f y o u r c o m p u t e r . F o r o p t i m u m p r o t e c t i o n , w e a r a g r o u n d e d a n t i s t a t i c w r i s ts t r a p .•M a k e s u r e y o u r c o m p u t e r i s t u r n e d o f f b e f o r e o p e n i n g t h e c a s e . D o n o t u n p l u g y o u r c o m p u t e r i f y o u w i l l b e u s i n g i tf o r a n t i s t a t i cg r o u n d i n g .•D o n o t r e m o v e t h e d r i v e c o v e r . T h e d r i v e c o n t a i n s n ou s e r -s e r v i c e a b l e c o m p o n e n t s .•S a v e y o u r S e a g a t e p a c k i n g m a t e r i a l s f o r f u t u r e u s e .U s i n g a n y o t h e r c o n t a i n e r o r p a c k i n g m a t e r i a l v o i d s y o u rd r i ve w a r r a n t y a n d m a y d a m a g e y o u r d r i v e .Q UICK I NSTNSTALLA ALLA ALLATION TION G UIDE Medalist 1720 (ST31720A)Medalist 852 (ST3852A)Connecting cables and mounting the drive1.Connect the interface cable to the drive. Make sure that pin 1 on theinterface cable (colored stripe) is attached to pin 1 on the drive (see above) and pin 1 on the host adapter.2.Partially insert the drive into the drive bay. Select an unused powerconnector from the power supply and connect it to the drive. Ifthere are no unused power connections on the power supply, you can purchase a “Y” cable adapter from your dealer. This connector will allow you to add another power connection for your new drive.3.Secure the drive with four 6-32 x 0.25 screws. CAUTION: If you usescrews longer than 0.25 inch when mounting the drive, you may damage the drive’s circuit board. The maximum insertion depth for the bottom mounting holes is 0.25 inch; the maximum insertion depth for the side holes is 0.125 inch.About Disk Manager SoftwareThis Seagate drive is shipped with free Disk Manager software installed on a temporary partition on the drive. This software partitions and formats the drive and allows older computers to access the drive’s full capacity.Before you can use the Disk Manager software, you must transfer it from the temporary partition on the drive to a bootable diskette with at least one Mbyte available. To create a bootable diskette, see your DOS manual. Transferring the software to a bootable diskette1.Insert a bootable diskette into drive A.2.Simultaneously press [CTRL], [ALT], and [DEL] to reboot yourcomputer from the bootable diskette.3.During the start-up process, enter your computer’s system setupprogram (sometimes called BIOS or CMOS setup). This is usually done by pressing a special key, such as [DELETE], [ESC], or [F1] during start-ups. See your computer or motherboard manual for system-specific instructions.4.Within the system setup program, configure your new hard drive asDrive Type 2, or enter the following values for a user-definable drive type: 615 cylinders, 4 heads, and 17 sectors per track. Thesetemporary settings allow you to access the Disk Manager software on your new hard disc.5.Save the drive-type settings and exit the system setup program. Youwill have to reboot your computer for the changes to take effect.6.After you reboot your computer, you should be able to access thesoftware on your new hard disc. If your new hard drive is drive C, type C:\SEAMOVE. Press [ENTER]to transfer the disc supportsoftware. Use a different drive letter if necessary.The SEAMOVE program transfers the Disk Manager files from your new hard disc to the bootable diskette in drive A. After all the files have been transferred, SEAMOVE deletes all the files from the hard drive, along with the temporary partition that held them. Running Disk Manager from your bootable software diskette 1.Simultaneously press [CTRL], [ALT], and [DEL] to reboot yourcomputer from the bootable diskette that now contains the DiskManager software. During the start-up process, enter yourcomputer’s system setup program, as described previously.2.Within the system setup program, make sure that a drive type islisted for each ATA hard drive in your computer. Some newercomputers can automatically determine drive-type characteristics, using the Auto drive-type setting. If your computer does notprovide this option, you must manually enter the number ofcylinders, heads, and sectors per track for your new drive, asshown in the table below.Model Heads Cylinders Sectors Capacity*ST31720A163,305631,705 MbytesST3852A161,65263852 Mbytes*1 Mbyte = 1,000,000 bytes3.Save the drive-type settings and exit the system setup program.You will have to reboot your computer for the changes to takeeffect.4.At the DOS prompt, type A:\DM. Press [ENTER] to run DiskManager5.Follow the instructions on your computer screen. From the mainmenu, select (E)asy Disk Installation. Then press [ENTER].6.At this point, Disk Manager lists all the hard drives that it canrecognize. You should see your new Seagate drive and your oldhard drive (if any). If Disk Manager recognizes all your drives,select the new drive you wish to install and press [ENTER]. DiskManager will format and partition your new drive.If a hard drive is not recognized, exit Disk Manager and turn offyour computer. Check all cables, jumpers and BIOS settings. Then run Disk Manager again.7.Follow the instructions on the Disk Manager post-installationscreens. You're done!NOTES:1) If your computer does not require software support for large hard drives, Disk Manager will optimize your system BIOS settings, then partition and format your new hard disc.2) If Disk Manager has installed software to help your computer access a large hard drive, you should see a blue Disk Manager banner each time you boot your computer. In this case, if you need to boot from a diskette instead of from your hard drive, see the Disk Manager online manual for instructions.3) To view the Disk Manager online manual, insert the Disk Manager diskette and type A:\DM /H. Then press [ENTER]. You can also view the online manual from within Disk Manager by selecting (V)iew/Print Online Manual in the main menu.only if the drive does。

C A R A UD I O P R O D U C T S2021Floating Display Multimedia Source UnitEntertainment Center General InformationI SO 2-DIN Chassis Installs in Most Newer VehiclesUniversal Mounting Brackets & Hardware IncludedApple CarPlay With Siri Eyes Free Built-In (VRCPAA only)Android Auto With Google Assistant Built-In (VRCPAA only) SiriusXM-Ready™ (vehicle tuner and subscription required) (VRCPAA only) Vertical Adjustment Mechanism for Optimum Viewing (VRCPAA-106) SmartSense Clear Glass Capactive TouchscreenBluetooth 4.2 Phone Calling + A2DP Audio Streaming10-Band 14dB Boost/Cut Equalizer & Preset EQsAdvanced FM/AM Tuner with RDBS Data DisplayAccepts OEM Steering Wheel Control WiringWireless Direct Select Remote Control IncludedRear View Camera Input w/ Manual & Auto-TriggerFront Camera RCA Input w/ On-Screen Trigger SiriusXM Satellite Radio Ready(VRCPAA only)Only SiriusXM® brings you more of what you love to listen to, all in one place. Get over 140 channels, including commercial free music plus the best sports, news, talk, comedy and entertainment. Welcome to the world of satellite radio. A SiriusXM Vehicle Tuner and Subscription are required. For more information, visit . vehicle tuner and subscription required. Sirius, XM and all related marks and logos are trademarks of Sirius XM Radio Inc. All rights reserved.Turn-by-Turn GPS Navigation(VRN only)Turn-by-Turn GPS Navigation w/ Route Guidance, Powered by iGo USA Map & +17 Million Point-of-Interest Database IncludedMap & POI Updates Available from Choose Destination by Address, POI, or GPS LocationOn-Screen & Audible Text-to-Speech CommandsHighway & Major Road Lane Departure GuidanceVRCPAA-106In-Car Entertainment System w/ Apple CarPlay, Android Auto,SiriusXM-Ready TM & Swiveling High Definition 10.6” LCD2FRONT & REARCAM READY3Multimedia In-Dash Source UnitsPhoneLink for Android (VRN & VR only)Enabled Smart Device Mirrors Display to Head Unit2-way Communication Enables Mobile Device ControlStay Connected without Handling Distracting Devices Retains Use of Smart Device’s Voice Recognition Service Connection Requires Original USB Charging Cable2A USB Charging Maintains Battery Life (front)Dynamic User Interface w/ SmartSense TouchHD 10.6” 1,024x600 TFT LCD w/ Adjustable Backlight (VRCPAA-106) HD 7” 800x480 TFT-LCD w/ Adjustable Backlight (7D & 7HB) Pinpoint Accuracy Capacitive TouchscreenLow Reflection Industrial Grade Glass Top PanelLarge Format User Interface Reduces Distraction7 Color Selectable Touch Key Illumination Bluetooth V4.2 Hands-Free Wireless Connectivity Hands-Free Profile Dials & Receives Calls & Displays Call Logs Phone Book Access Profile Displays Caller ID Info & Contacts Audio/Video Remote Control Profile Enables Playback Controls Advanced Audio Distribution Profile Streams Audio Wirelessly USB Audio/Video PlaybackVideo & Audio Playback from DVD, DVDR, CD, & CDR DiscsMP3 & WMA Audio Files from 64GB USB or Micro/TF SDMP4, & H264 Video Files from 64GB USB or Micro/TF SDID3 MP3 Tag Reading for Track & Artist InformationAudio/Video Configurations4Ch. 300w Max Class A/B Full Range Speaker Amplifier Built-inAUX Audio (3.5mm) Input for External Devices on Front Panel5ch 4V Preamp RCA Outputs; Front + Rear + SubwooferAudio/Video RCA Input & Video Output for Auxiliary DevicesVR-7HB DVD Audio/Video + PhoneLink for AndroidVRN-7HB GPS Navigation + PhoneLink for AndroidVRCPAA-7D In-Car Entertainment System w/ Apple CarPlay, Android Auto, SiriusXM-Ready TM & 7” LCD4REFERENCESUBWOOFERSThird Generation Soundstream Reference FrameOversaturated Motor Structure for Increased Magnetic Strength 12mm Vented T-Yoke & Top Plate Improve Low Frequency Dynamics 317oz Double Stack Magnet, T-Yoke & Top Plate2.5” 4-Layer Voice Coil w/ Large Gauge Wire Increases Power Handling High-Temperature Tolerance Adhesives Resist Thermal FailureInverted Roll Polyether Foam Surround w/ UV & Chemical Protection Oversized Concave IMPP Primary Cone Increases Effective Surface Area Non-Transfer Spruce Pulp Cone w/ UV & Chemical Protection Acoustic Canceling Polyvinyl Chloride Gasket & Trim Ring Nickel Plated 12ga Spring-Loaded Compression Wire Terminals Stitched Voice Coil Leads Prevent Potential DamageDual Poly-Cotton Suspension Dampen Violent AccelerationsSUBWOOFERSIn recent years, our subwoofers have evolved to meet various performance and placement goals, keeping your, the Soundstream fanatic, suggestions in mind. New for 2020, we inroduce Reserve subwoofers, avilable exclusively to our Soundstream Reserve dealers. Premium materials & performance characteristics include over saturated 12mm top plate and t-yoke, high density poly-ether foam surround, & a massive 1,000w 3” voice coil. High density Spruce pulp cone and double poly-cotton blend suspension hold everything together. These behemoths are not for the faint-hearted....Reserve SubwooferRSW.122RSW.152MAX Power (watts)1,800w 2,600w RMS Power (watts)900w 1,300w Efficiency (1w/1m dB)83.5dB 88dB Voice Coil Configuration 3” DVC 2Ω3” DVC 2ΩMounting Depth 6.25”9.25”Optimum Sealed Box 0.75ft32.00ft 3Optimum Ported Box1.25ft 34.00ft 3RESERVE Reference R5R5.122R5.124MAX Power (watts)2,000w RMS Power (watts)1,000wEfficiency (1w/1m)85.00dBVoice Coil Configuration 2.50” DVC 2Ω2.50” DVC 4ΩMounting Depth 7.00”Optimum Sealed ft31.00ft 3Optimum Ported ft 32.00ft 3Overcompensating Motor Structure for Increased Magnetic Strength 12mm T-Yoke & Top Plate Improve Low Frequency Dynamics Vented T-Yoke & Frame Reduces Voice Coil Heat Build-up Non-Magnetic Non-Resonate Die-Cast Aluminum Frame3” 4-Layer Voice Coil w/ Direct Connect Wire Increases Power Handling High-Temperature Tolerance Adhesives Resist Thermal Failure Non-Transfer Spruce Pulp Cone w/ UV & Chemical Protection Stitched and Glued Surround/Cone Joints for Strongest BondingExtended Excursion Poly-ether Foam Surround w/ UV & Chemical Protection Dual Poly-Cotton Suspension Dampen Violent Accelerations 1-pc Gasket/Trim Ring w/ Concealed Mounting Holes IncludedRS.42RS.52RS.69RS.65RS.575SPEAKERSWhen it comes to making affordable speakers worth listening too, you must think outside of the box. Reserve speakers uses non-traditional materials to be innovative, while maintaining great sound. Everyone agrees paper sounds better, right? Taking your listening experience to the next level, Reserve speakers use pulp fiber cones reinforced with mica, a crystalline structured additive. Mica increases the cones dimensional stability, stiffness, and strength, suppressing cone radiated distortions. Tweeters of Reserve speakers are made with a woven poly-nylon synthetic material formed into a dome shape. This textile material generates mild upper frequency tones, while the contoured dome widens the sound wave dispersion patterns.RESERVE Natural Pulp Fiber Cone w/ Mica Crystalline Additive 3/4” Woven Poly-Nylon Hemispherical Dome Tweeter Integrated Passive 6dB High Pass Crossover FilterRear-Attached Surround Increases Effective Cone Area Poly-Cotton Damper w/ Woven Braided Tinsel Leads 1” O.F.C. Copper Voice Coil on Aluminum FormerPowder Coated Mesh Steel Grill Included (select sizes)RESERVE SPEAKERSRS.69RS.65RS.57RS.52RS.42Size and Configuration 6”x9” 2-way6.5” 2-way5”x7” 2-way5.25” 2-way4” 2-way RMS Power (watts)80w 60w 60w 50w 40w Resonant Frequency 47.3Hz 64Hz 63Hz 97Hz 115Hz Efficiency (1w/1m dB)88.986.687.585.584.3Mounting Depth3.00”2.25”2.25”2.00”2.00”Digital Pre-Amp AmplifiersDigital Pre-Amp amplifiers offer innovative Korean made approach to traditional sound pro-cessing. DPA amps include a digital signal processing integrated circuit module which opens the door for precise tuning of crossovers & gain settings. Keeping the user in mind, all functions are controlled by top surface mounted keys, needing only a fingers press & knob turn. Select-ed crossover frequencies and gain levels are displayed on an adjacent LCD, showing operating voltage & temperature while idle. Full featured pre-amp options, including band-pass & subsonic crossovers, bass boost, & even variable phasing make DPA amps a go-to for any enthusiast.High Efficiency Class D Full Range & Monoblock Amplifiers Hybrid Aluminum Alloy Heatsink for Optimum Dissipation2-ohm Stereo & 4-ohm Bridged Impedance Stability (DPA4 & DPA5) MOSFET Power Supply w/ Audiophile Grade IR TM Transistors Military Grade SMT PCB Maintains Dynamic Performance Direct Short, Thermal, & Overload Circuits Protect Amplifier Advanced Digital Pre-Amp Processing for precise tuning 200mV-6V High/Speaker Level or Low Level/RCA InputQuick Disconnect High L& low level Wire Harnesses Included Quick Disconnect Speaker level Output harnesses Included Low-level thru-pass output to Daisy chain multiple amplifiers Variable 12dB High, Low, Band-Pass, & Subsonic Crossovers Variable 1800 Phase Shift to match polarity of system speakers Dash Mount Gain Control Module Included (DPA1 & DPA5)Digital Pre-Amp Series DPA4.1600D DPA5.2000D DPA1.2000D Max Power1,600w2,000w2,000wRMS Power 4Ω80 x 475 x 4 + 200 x 1250 x 1RMS Power 2Ω160 x 4125 x 4 + 400 x 1400 X 1RMS Power 4Ω Bridged320 x 2250 x 2 + 400 x 1 (2Ω)-RMS Power 1Ω Bridged--700 X 1Remote Gain Control-Included IncludedDimensions (4”w x 1.75”H)9.00”11..5”9.00”6Reserve Micro Amplifiers Don’t let these little monsters fool you. The latest and greatest of class D fullrange technology allows us to pack 10 lbs of KICK YOUR ASS in a 2-lb chassis.Once regarded as “dirty power”, class D’s stable performance, thanks to highpower capability, maximum efficiencies, and low tolerance components, rivalstraditional full range applications. Minimal power requirements, ultra microfootprint, unbelievable sound quality, and easy install makes Reserve Microamplifiers great for any car, motorcycle, boat, or off-road vehicle.Reserve Micro Amplifiers RSM4.1200D RSM1.2000D RSM1.4000DMax Power1,200w2,000w4,000wRMS Power 4Ω75 x 4360 x 1600 x 1RMS Power 2Ω110 x 4480 x 1850 x 1RMS Power 4Ω Bridged220 x 2--RMS Power 1Ω Bridged-600 x 11,200 x 1Remote Gain Control-Included IncludedDimensions (3.75”w x 1.75”H) 6.75”7.50”9.25”High Efficiency Class D Full Range & Monoblock Amplifiers Hybrid Aluminum Alloy Heatsink for Optimum Dissipation2-ohm Stereo & 4-ohm Bridged Full Range Operation1-ohm Minimum Impedance Monoblock OperationMOSFET Power Supply w/ Audiophile Grade IR TM Transistors Military Grade SMT PCB Maintains Dynamic Performance Direct Short, Thermal, & Overload Circuits Protect Amplifier200mV-6V High Level or Low Level RCA InputDirect Connect Power and Speaker Output TerminalsVariable 12dB High Pass, Low Pass, & Subsonic Crossovers12dB Bass Boost Increases Low Octave Harmonics (RSM1)Dash Mount Gain Control Module Included (RSM1)7A L L R I G H T R E S E R V E D. S P E C I F I C A T I O N S A N D D E S I G N S A R E S UB J EC T T O C H A N G E W I T H O U T N O T I C E.P R I N T E D I N U.S .A .© 2021 SOUNDSTREAM TECHNOLOGIES; MONTEBELLO, CA, U.S.A.Reserve amplifiers are the next step in performance and value. Taking ad -vantage of our tried and true class A/B full range and improved effi -ciency class d monoblock platforms, Reserve amplifiers continue down the road of reliability and longevity you know well. Satin silver chassis, engraving, and accents teetering on the edges bring a high end appeal to traditional performance.Class A/B Full Range & Class D Monoblock Amplifiers 2-ohm Stereo & 4-ohm Bridged Full Range Operation 1-ohm Stable Monoblock Operation for MAX Power Military Grade PCB w/ PWM MOSFET Power Supply Direct Short, Thermal, & Overload Circuit Protection High/Speaker Level & Low Level/RCA Input 200mV-6V Low Level RCA InputPre-Amp Low-Level RCA Outputs (select models)4g Power Wire & 8g Speaker Wire Outputs Variable 12dB High & Low Pass Crossovers12dB Bass Boost Increases Low Octave Harmonics1800 Phase Shift Improves Low Octave Dynamics (monoblock)Dash Mount Remote Control Included (select models)RESERVE AmplifiersReserve AmplifiersRS2.1200RS4.1200RS4.2000RS5.4500DRS1.5000DRS1.8000DMax Power 1,200w 1,200w 2,000w 4,500w 5,000w 8,000w RMS Power 4Ω150 x 275 x 4150 x 4100 x 4 + 500 x 1800 x 11,200 x 1RMS Power 2Ω220 x 2110 x 4220 x 4160 x 4 + 750 x 11,200 x 11,700 x 1RMS Power 4Ω Bridged 440 x 1220 x 2440 x 2320 x 2 + 1,000 x 1 (1Ω)--RMS Power 1Ω----1,700 x 13,000 x 1Remote Gain Control ---Included Included Included Dimensions (8.25”w x 2”H)10.75”10.75”13.00”13.50”11.75”15.75”。

有哪些好的英语学习资源可以推荐？哎呦，学英语啊！这可是老生常谈了，大家肯定都听腻了吧？哈哈哈！不过嘛，今天我想跟大家聊聊，那些真正能帮到你的英语学习资源~其实吧，我最近有个特别真实的体验，就是我儿子（对，是我儿子，我也有孩子了哈哈）最近要参加一个英语考试，我看着他每天拼命学，还老担心考不好。

我就琢磨着，是不是有啥简单易懂、又实用的学习资源能帮到他呢？结果一找，哇！真是不得了，简直是琳琅满目，看得眼花缭乱，各种APP、网站、书籍… 搞得我都想重新学英语了！不过，经过我一番仔细筛选，发现了一些真正宝藏级别的学习资源，今天就来跟大家分享一下！先说我的儿子，他最喜欢用“可汗学院” 这个平台。

别看它的名字听起来挺严肃的，其实内容很丰富，而且特别适合自学。

重要的是它有各种各样的学习资源，比如视频讲解、练习题，还有互动游戏，学习起来很轻松，一点也不枯燥。

最重要的是，它是免费的！这一点简直是良心！我儿子用这个平台学习了一段时间，进步真的挺明显的，他能更轻松地理解一些难点，而且学习的兴趣也更浓厚了。

当时他还跟我说，他觉得这个平台的学习方式特别有意思，让他感觉学习英语不再是什么枯燥的任务，反而像在玩游戏一样。

我自己也试着用了下，发现它的“英语语法” 模块特别不错。

视频讲解通俗易懂，而且老师讲课很有意思，不像有些教学视频，感觉特别生硬，让人听了就头疼。

可汗学院的老师讲课，感觉就像朋友一样在跟你聊天，会时不时地讲一些小笑话，一下子把学习气氛就活跃起来了。

当然，除了可汗学院之外，还有很多其他学习资源也很靠谱，比如“BBC Learning English” 这个网站，它汇集了各种各样的英语学习内容，包括新闻、纪录片、英语学习教程等等，而且都是用地道英语制作的，还能选择不同级别的英语材料，绝对是提高英语水平的利器！还有“沪江网”，这个网站的功能就更全了，它不仅有英语学习课程，还有英语学习社区，你可以在这里找到很多学习伙伴，一起交流学习经验。

德语语音单词讲义欢迎使用新东方在线电子教材第一章引言1．德语是严谨，有规律性的语言。

2．发音的规律性，不需要注音标，看字母组合可发音3．语法较复杂，但严谨，不会产生歧义。

4．本课程内的“交际德语”部分既适用商务人员，也适用于留德学生，对德福考试（TestDaF）的听力部分和口语部分，其内容也有很好的借鉴意义。

德语语音及常用单词德语字母1德语字母与英语字母基本相同，但名称不同。

在字母表中以红色标明的是德语的特殊字母，其中Ää，Öö和Üü为变音（Umlaut），München = Muenchen , β在瑞士写成ss. 字母名称按德语发音规律。

2其中元音五个Aa Ee Ii Oo Uu；半元音一个Yy；变音三个：ÄäÖöÜü德语语音德语发音规律：德语单词第一音节一般为重读音节；德语里没有连读。

元音发音规律：1．元音在下列情况下发长音：a. 双元音和复合元音ie 发长音，如Saal, See, Boot, wie；b. 元音在不发音字母h前发长音，如Bahn, Sohn, ihnen, Uhr, gehen；c. 元音字母后没有辅音或只有一个辅音时，一般发长音，如Tag, gut, wer, Öl, du, ja 2．元音在双辅音或两个以上辅音之前时，发短音。

如essen, Post3．元音字母e 在词尾时发轻音（ə）。

如Name, Hose4．元音在sch, ng, nk 之前发短音, 如Tisch, lang, danke辅音发音规律：1. 浊辅音b, d, g在词尾时发相对应的轻辅音(p), (t), (k), dt在词尾发(t), th组合只发一个辅音（t）2. 辅音s的发音较多：a.s在元音前发浊音(z), 如sagen, See, Hose, suchenb.s在辅音前及词尾发轻音(s), Skizze, skeptisch, Gas, Busc.ss/β永远发轻音，β前的元音为长元音。