Bose 1801 Service Manual
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Bose 1801 Service Manual
LED PCB Layout LED PCB Schematic Diagram Amplifier Schematic Diagram Amplifier PCB Layout Use the part numbers listed below when ordering these transis- They include the following parts: Use the part numbers listed below when ordering these transis- tors.Use only replacement parts that have critical characteristics recommended by the manufacturer. 2. Make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit before returning the unit to the customer. They also have a power monitor display using a light emitting diode array and in the case of the 1801 signal meters as well. Rear Panel Removal 9.1 Perform procedure 5. 13.1 Perform procedure 1. 9.2 Remove the gain control knobs. One with two or three wires and one single wire. The later pro- 4.3 Turn the gain controls up to the point. Connect the wire directly.This problem was caused by a change we were forced to make when RCA discontinued the manufacture of the transistor we had been using as Q3 on the 1800 PCB's. The new output transis- tors are not compatible with the original 102433 transistors. Please do not offer the downloaded file for sell only use it for personal usage. Looking for other manual? For this no need registration. May be help you to repair. You could suffer a fatal electrical shock. Instead, contact your nearest service center. Note! To open downloaded files you need acrobat reader or similar pdf reader program. In addition, Also some files are djvu so you need djvu viewer to open them. These free programs can be found on this page: needed progs If you use opera you have to disable opera turbo function to download file. If you cannot download this file, try it with CHROME or FIREFOX browser. Translate this page: Relevant AUDIO forum topics: Bose Sounddock 1 tapegyseg csati Sziasztok. Egy baratom megkert, hogy talaljak vagy gyartsak egy tapegyseget a Bose dokkolojahoz.
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Sajnos az eredetiket aranyarban adjak, igy gyartanom kell egyet. Talatam is egy elegans kis 4 pines csatit, de fennakadtam az eredeti csatlakozo labkiosztasan. Talaltam egy rajzot de nem tudom eldonteni, hogy a kabelen levot abrazolja, vagy a dokkoloban levot. Basszus vegfoka 2-3mp mulva megfut vagy pozitivba vagy negativba ha nincs a hangszoro rarakva, hangszoroval azonnal letilt, (amikor a kimeneten eljut DC 4V-ig a vedelem lekapcsolja relevel az erositot). Mikor a MUTE hibat kerestem, volt olyan eset is, hogy nem futott meg a kimenet es szolt a basszus rendesen, de ujboli bekapcsolaskor ha nem halkitottam le a potit akkor kikapcsolt a rele, ha lehalkitottam akkor jo lett, de nagyon susogott, arra hasonlitott mint amikor FM radio nincs az allomason, van egy kozos mute tranzisztor az kapcsolja az osszes tobbit, ha azt kiszedtem akkor is megmaradt a susogas, szerintem visszafele jott valamelyik oldalrol ezert szedtem ki mindegyik oldalrol a tranzisztorokat, nem akartam bajlodni vele, hogy honnet jon a susosgas vissza. Mi lehet a gond? BOSE bekotesi rajz Legyszi legyszi ha valaki tudnasegiteni egy BOSE AMP2440-as erosito bekoteseben,azt nagyon szepen megkoszonem. Ez AUDI A3-asbol van, a steker nincsmeg. Bose Lifestyle CD-20 FLC kijelzo halvany Sziasztok! A fenti keszuleknek halvany a kijelzese. Eleg erdekesen van megoldva a kijelzo tapfesze, sokban fugg a bejovo 12VAC feszultsegtol. Kerdesem az lenne, hogy a futest probaljam emelni, vagy a -24V-ot. A D8-on a 30V is kevesebb, de az AC 4.5V is. Melyik befolyasolja jobban a fenyerot. A futes, vagy a negativ tapfesz? Udv: Jacint Similar manuals: You can write in English language into the forum (not only in Hungarian). By submitting a comment, you are declaring that you agree with these rules: Although the administrator will attempt to moderate comments, it is impossible for every comment to have been moderated at any given time.
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You acknowledge that all comments express the views and opinions of the original author and not those of the administrator. You agree not to post any material which is knowingly false, obscene, hateful, threatening, harassing or invasive of a person's privacy. The administrator has the right to edit, move or remove any comment for any reason and without notice. Failure to comply with these rules may result in being banned from further commenting. Did you miss your activation email ? List of things to carry out so far: Refinish front fascia New knobs for front panel New lighting Speaker protection circuits to be fitted Recapping more to come. Have to say this is the most hefty amp ive ever worked on, it makes my 2275 look likes a fetus. I have removed the perspex and taken it back to 800 then back to 1200 ready for polishing. I gave the amp a run in once i confirmed the readings from the terminals and it works fine, however it does have a hum in the right channel. On first look the right amp module has been replaced and is IMMACULATE. The left channel looks original (bit worse for wear) and has had field modifications for power resistor flaring up and a few other issues near the zener diode. I am looking over a modification page i found which has some interesting upgrades made also. Having said all that i'm amazed that Bose could build such an amp, seeing its chassis with 3-4mm thick aluminum all around and then there are the heatsinks.they make great grab handles trying to lift it on the work bench. Bose suck at service manuals and there are components missing from the list left right and center, not to mention duplicate names. Silver Mica caps have arrived to replace all those nasty ceramic caps Looking over the amp boards, it seems that the newer amp module has metal film resistors fitted compared to the older one which is definitely carbon films. Either way im rebuilding both modules to mirror each other.
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I pulled every one from the board and metered them out followed by looking up their rating values. Ive compiled a list here for you and a pic of the resistors i removed, feel free to let me know if you can identify any of them such as their power handling etc as i cant work out the last few and ill update the list. Also removed the front plate from the amp chassis, removed the VU meters and starting rebuilding them, both needed realignment and new foam as they are falling down into the housing. Heres now the front faceplate is looking at the moment It still works however I am missing one output transistor in one channel. The amp was damaged in a fire some years ago and I restored it except I could not get a replacement device for the one damaged. The amp still functions almost as new, a little less output potential in the one channel. I cleaned it up and it really looks new. I don't use it much however. It is so heavy, when I received it years ago it came by Road Way express semi!!! Aparently not interchangable according to the service manual however there hasn't really been many changes to the amp design. I have a batch of MJ15024's to replace all of them on both modules. The originals were not available, so I have one missing. I keep the amp for sentimental reasons. The amp had several strong straps around it so you could lift it out of the carton. Oh, never lift it by the front panel!!! There are changes some characteristics aswell but we will see how they go once assembled, i am replacing all at once anyway I think it said a frequency limit of 4 Mhz, which is fine. I guess it depends on the other characteristics. This is only an audio application so one would think anything close should work, but all have to be the same to balance the load. Stop rotating the trimmer as soon you see the crossover distortion disappear. Leave the amplifier on, without signal and load, and check the heat sinks temperature (with your hand).
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If the temperature goes up on one channel, reduce the bias setting on it. I have had some where if you use a replacement the improved transition frequency causes it to oscillate, as the original output devices were so slow that they made a low pass filter, so the new devices needed an extra base emitter capacitor to roll them off. Old and current 2N3055's are a case in point, the original planar device would struggle to deliver high gain at 10kHz, while the EPI one would work up to a few MHz with no problem. Not too good if you had a 360 degree point in the feedback loop at some point over 50kHz, then it would get hot or burn out tweeters for no apparent reason ( Here's looking at you Phase Linear). Most impressive amount of work. Where did this amp comfe from. The corrosion on the aluminum and rust suggests it was in a fairly humid environment, even near the ocean. Pots dried up, to its credit though the amp fired straight up with no issues on either channel. However there was a significant different between channels due to 1 being replaced mid life, my goal is to have the 2 channels matching by the end Seems you're doing a great job. Funnily enough my item suffers from the same power cord fraying as yours. Upon opening it up to attempt to replace the power cord found a number of things.The other channel board has the following changes that I can see: 3 output transistors replaced with ones marked 2n3442 all sorts of component changes a resistor soldered on the back side about a quarter of the copper tracks heavily and really sloppily tinned blackened molex(?) connector (I guess the board had been swapped to the other side at some point. So my conclusion is, at some point one of the channels failed, possibly taking one of the psu 'lyitcs with it and was replaced. The other one had a number of repairs done by someone who couldn't care less (I think the amp was used in a PA system).
My aim is to restore this with quality components but keeping as close to the original as possible. I'll probably start by locating transistors, carbon resistors etc.Later on, I'll attempt reforming the psu caps. I think I'll also go with replacing the ceramics with silver mica or polystyrenes though. They just look naff - original or not. I would like to clean the boards too and remove the sloppy tinning carefully (hopefully it's not there to repair track damage underneath) I'd be keen to hear of any advice and find out how your restoration is coming along. If finished, are you pleased with the sound. Made any additional changes. Best regards Stelios. We have 3 Bose Diagrams, Schematics or Service Manuals to choose from, all free to download.This Website contains a compilation of information already available elsewhere on the internet and therefore considered to be in the public domain. We make every effort to ensure the information contained here is as accurate as possible, but we will not be responsible for any errors or omissions, or anything resulting thereof. However, we do not accept any liability for any loss, damage or inconvenience, of any kind, as a result of downloading any information from this site. Always scan any information downloaded from the internet with an up to date virus scanner before opening the downloaded information. Something went wrong. View cart for details. All Rights Reserved. User Agreement, Privacy, Cookies and AdChoice Norton Secured - powered by Verisign. All Rights Reserved. All trademarked names, logos, and brands are property of their respective owners. All company, product and service names used in this website are for identification purposes only. Their use does not imply endorsement by any brand unless expressly stated. Learn more - opens in a new window or tab This amount is subject to change until you make payment.
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For additional information, see the Global Shipping Programme terms and conditions - opens in a new window or tab This amount is subject to change until you make payment. If you reside in an EU member state besides UK, import VAT on this purchase is not recoverable. For additional information, see the Global Shipping Programme terms and conditions - opens in a new window or tab Learn More - opens in a new window or tab Learn More - opens in a new window or tab Learn More - opens in a new window or tab Learn More - opens in a new window or tab Learn More - opens in a new window or tab Contact the seller - opens in a new window or tab and request post to your location. Please enter a valid postcode. Please enter a number less than or equal to 1. Sellers may be required to accept returns for items that are not as described. Learn more about your rights as a buyer. - opens in a new window or tab You're covered by the eBay Money Back Guarantee if you receive an item that is not as described in the listing. All Rights Reserved. User Agreement, Privacy, Cookies and AdChoice Norton Secured - powered by Verisign. Use the part numbers listed below when ordering these transistors. Reference Designator Q4 Q5. Description SIM, 2N2219 SIM, 2N5415. Part Number 102428-1K 102429-1K. Note 1 2. NOTE: The part numbers listed are kits. They include the following parts: 1. Q4 kit: 1 102428 transistor 3 264371 extension pins 1 192527-S1 supplement. 2. Q5 kit: 1 102429 transistor 3 264371 extension pins 1 192527-S1 supplement. Supplement. Part Number 192527-S1. Contents. Specifications. 2 Safety Information.Share it: Was this file useful. Share Your thoughts with the other users. User ratings and reviews for this file: Date User Rating Comment Average rating for this file: 0.
00 ( from 0 votes) Similar Service Manuals: BOSE 270000-SM rev2 pages38-49 - BOSE AV-3-2-1 SM - BOSE 321 main pcb layout sheet 2of5 - BOSE Bose Service Phone - BOSE KnexTuner-270575 Rev 00 sheets1-3 - BOSE 270000-SM rev2 pages50-58 - BOSE 270000-SM rev2 pages1-17 59-60 -. It may not display this or other websites correctly. You should upgrade or use an alternative browser. Check out our 20th Anniversary Mugs, Classic Logo Shirts and much more. Discussion here. Have to say this is the most hefty amp ive ever worked on, it makes my 2275 look likes a fetus. Where do you plan on getting replacement knobs from. Just look at the size of those heatsinks compared to the heatsinks on the 2775!It is possibly the best sounding 6x7 metre shed in the country. I once inadvertently shorted the speaker output. The amp never missed a beat. Through a spark like shorting a 12v car battery. But kept on rockin.It is without doubt one of the ugliest amplifiers that I have seen. Much like most Bose products however. Great though if you have a room done out in 1970s decor that you want to use it with.It is without doubt one of the ugliest amplifiers that I have seen. Much like most Bose products however. Great though if you have a room done out in 1970s decor that you want to use it with. Click to expand. Other than that i have flattened out the sides that were bent ready for sanding. I think i have the plastic polishing down pat, i start with a 800-1200grit with the random orbital then polish it up with metal polish Also i made up the input cables for the amp since they dont resemble anything i have and the amp works.Silver Mica caps are on the way from overseas to replace all those nasty ceramic caps Your last restoration thread was good, will keep an eye on this one. I've got a decent old Kenwood KA-501, still looks great and works fine, but could do with a bit of resoration work (the input selection pot mostly).
I have cut the plate and fitted a proper IEC connect so no more broken power cords for this unit. I wish Bose still had this level of quality because even the depth of the metal is a challenge with the amp. I moved all the stickers around also for histories sake currently on the hunt for appropriate gold dual binding posts and mono 6.5mm connectors. Ill settle for normal stuff if i have to but it was mainly for aesthetics and to give the amp some classy feel. Phono inputs have been replaced with RCA's (was actually a good thing with gold phonos costing alot. Half of the binding posts are installed however i need more rubber mounts before i can finish and some coupling resistors for the input. It is quite a challenge to replace the connector hardware as all the standards have changed since then and i had to be inventive with my isolation to keep all the connectors off the chassis. Santa just dropped off all my Silver Mica caps today to replaced every ceramic Im glad i found a source for these puppies otherwise they would have sent me broke buying them here. I pulled every one from the board and metered them out followed by looking up their rating values. Ive compiled a list here for you and a pic of the resistors i removed, feel free to let me know if you can identify any of them such as their power handling etc as i cant work out the last few and ill update the list. Other than that ive been looking over the board and coming up with some replacements for the parts. Will most likely replace the outputs also but i just need to check why BOSE say the new drivers are not interchangeable as 1 module in the amp has the old 2N5840's and the new one has the newer Motorola MJ15011's. Id like to replace both units with ST - MJ15024's. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Bose 1801 Service Manual.
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To get started finding Bose 1801 Service Manual, you are right to find our website which has a comprehensive collection of manuals listed. Our library is the biggest of these that have literally hundreds of thousands of different products represented. I get my most wanted eBook Many thanks If there is a survey it only takes 5 minutes, try any survey which works for you. The thing weights 37 kg, has one huge transformer and two 14000 uF 100V caps. After a few hours of measuring and replacing the rectifier, power cord and several times the current limiting resistor, it seems like i got a working power supply. And i haven't killed myself yet. I made some pic's, here they are: Now i got some questions: 1. When i measure the 2N5840 resistors with my cheap multimeter in diode mode, i get some values from B to E and from B to C. They are around 500, what are these values? 2. Can i use these values to match pairs? 3. The service manual says that for some models the 2N5840 can be changes to MJ15011 transistors (much easier to get), yet it also says they are not compatible. Can anybody help me there. I'm not sure about the important specs to look at when searching for replacement transistors. 4. I read alot here the last few days and one of the things was that old opamps (70's) are crap.From the schematic, it looks very similar anyway.Or better even, etch a new one, that's probably quicker than desoldering and repairing the thing. It could be fun to build a board using this design, upgrade it a bit with more modern solid state and listen to the difference between the channels. I've got some reading to do, i'll be back.From the schematic, it looks very similar anyway. The new design also used an op-amp input stage (LF412) and a push-pull VAS, making it more similar to the BGW amps.The Leach uses comp difff amps the Bose uses an IC in the front endTake it apart, clean it, check the solder joints. I am able to get most working.Resources saved on this page: MySQL 15.
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Please try your search again later.You can edit your question or post anyway.Find out more about our Delivery Rates and Returns Policy If you are a seller for this product, would you like to suggest updates through seller support ? Since those early days, Bose engineers have kept their focus on creating better technology. You'll find that focus exemplified in the Bose 161 speakers. About The Product These compact bookshelf speakers are a versatile option for enjoying both your films and music. They provide balanced audio in a sleek design that works with both home cinema- and stereo components. Integrated Stereo Everywhere and Articulated Array technologies help to deliver top notch sound quality to just about everywhere in a room. Versatility and performance Bose 161 stereo speakers bring Bose sound performance to your living room, study or office. And, if you prefer not to use them as bookshelf speakers, custom mounting brackets are included to increase placement options throughout your home or office. They come with custom mounting brackets, giving you more options of where you can place the speakers in your office or home if you don't want to use them as bookshelf speakers. And, because you can use them with your existing home cinema components, they are also the ideal choice as home cinema speakers, so that you can experience Bose-quality sound when watching your favourite films. You can use the speakers with an SA-3 amplifier to experience Bose-standard sound from your existing Bose Lifestyle system in another room in your home. In fact, you can even listen to music in one room, while your children watch films in another, simultaneoulsy, using the same system. More features The speaker design incorporates Articulated Array, including precisely positioned drivers that produce a wide, consistent audio field. Enjoy balanced stereo sound across a large area thanks to Stereo Everywhere speaker performance.
Twiddler drivers use technology to create more movement of air from a tiny enclosure, producing a rich, low-frequency sound, which seems to come from much bigger speakers. You can now place your speakers close to your television without having them interfere with the picture quality, thanks to magnetically shielded speakers. To ensure the highest levels of reliability and quality in the sound industry, the speakers have been SYNCOM computer tested. For flexible placement possibilities and easy installation customised brackets have been included. In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading. Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness. Please try again later. Neo the One 5.0 out of 5 stars The speakers produce a rich sound which could be expected from larger and more expensive equipment - I'm delighted and happy to recommend these versatile speakers from BOSE.It looked like the box had already been opened - a big foot print on the instruction manual. Would buy direct from Bose next time.Hooked them up to. Denon CEOL for the kitchen and it works superbly.Wanted them as a set for my kitchen, with my system in another room--music only, mostly stereo LPs. Please try again Ich habe die 161 als Ersatz zu nicht so style-lischen LS angeschafft. Werden gut gepolstert geliefert und beim auspacken merkt man das Gewicht, ich hatte mit der Halfte gerechnet. Das Stereobild ist zu normalen Anordnungen der Chassis besser und interessanter. Klanglich ganz nett, ja es fehlt der Bass. Aber ein guter Grundton ist mit etwas nachhelfen erreichbar. Mitten -Hohen sind gut,fehlen tut da nicht viel. Bei mir dudeln die LS im Hintergrund und dafur sind diese perfekt.
Update: Ich habe sie zuruck geschickt, nach einer weile ist der Klang komisch. Bei Leiser Musik macht es den eindruck ob die Hohen drohnen wurden und vollig unsauber sind. Beim Grundton muss man nachhelfen mit dem Bassregler aber das klingt aufgedickt und ob immer noch was fehlen wurde. Fur Satelliten, Surround oder Atmos mogen sie funktionieren aber als Fullrange unbrauchbar.Sorry, we failed to record your vote. Please try again Die Luftungsschlitze suggerieren voluminosen Klang. Aber von Sound ist nichts zu horen, selbst bei 2x95Watt (Yamaha RX-S601D) Ansteuerung und hochgedrehten Bassen. Lacherlich, aber mein Bluetooth Lautsprecher JBL Charge macht mehr Klang. Mit einem Subwoofer konnte ich jedoch den gewunschten Sound erreichen. Am Ende hat die Form und Optik im Raum (Kuche, 20qm) im Zusammenspiel mit einem Subwoofer uberzeugt. Alleiniger Einsatz als Stereo Lautsprecher NICHT EMPFEHLENSWERT. Die deutlich gunstigeren JBL one waren da schon besser, leider wegen Optik nicht behalten. Die Teufel Ultima 20mk deutlich besser im Sound, aber gro?er und fur meine Kuche unpassend.Sorry, we failed to record your vote. Please try again En mi caso los puse para sustituir una Denon Piccolo y se nota la mejoria en calidad de audio. Eso si, imprescindible un subwoofer, son cajas muy pequenas para reproducir los bajos, y se pierden muchas notas. Ademas le falta cuerpo. Lo tengo conectado a un sonos ampSorry, we failed to record your vote. Please try again Elles sont assez imposantes, mais dans cette couleur blanche, fixees sur un mur blanc, elles se fondent parfaitement dans le decor. Bien entendu, il faudra un ampli entre votre source audio et les enceintes. Utilisees seules, elles manquent clairement de basses. Pour un ensemble Home Cinema, il faudra sans aucun doute ajouter un caisson de basses pour apporter un peu de profondeur et un peu de relief au son. En tant que satellite dans un ensemble 2.
1, elles jouent parfaitement leur role: le son est clair, bien equilibre entre mediums et aigus, ces derniers n'etant pas trop prononces ni trop agressifs. Une excellente paire d'enceintes, dont le rendu dependra ineluctablement du reste de votre installation (ampli, caisson).Sorry, we failed to record your vote. Please try again Sound quality is ok but cannot handle loud volume at all. You should only take this speaker if you're severely lacking space A subwoofer is obviously needed along with these speakers. Nice thing about them is that you can mount them above or below a big TVSorry, we failed to record your vote. Please try again I have couple of Bose system and all of them from my computer speakers to my hometheater.I love them. They're no different than others. Except for one. these have nice arc that blends with wall. Jut to try them out I unhooked one of my polkaudio Tower speaker and replaced it with Bose, I wouldn't say that it completely blew my towers but I'll say they performed 70 of my towers tho no that strong bass but again those are towers with three 6inch drivers and one twitter.. and they are almost 4 times the price.If you hook them up with subwoofer they are boom.Sorry, we failed to record your vote. Please try again These Bose speakers (no matter what other reviewers say) are not made to use without a sub woofer but sound fantastic and are a huge improvement over the main ones I had before. I don't use surround in the living room and if I did I would probably use the 305's or other larger speakers as mains with the 161's as rear surround. The 161's did improve the stereo image and the loudness up front for my living room size. I'm near 60 and have owned extremely high end equipment in the 70's and 80's until I decided it was time to spend my money on other things. As I get older I just need decent sound for movies and music while watching TV and these seem to do the trick.
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