Sansui au 919 service manual

For more on the , go here. With the DB versions, there is often a problem in the Dolby section, causing intermittent channel dropouts. We disable the Dolby section by bypassing completely. We have become quite experienced with this series, and replace output transistors with matched pairs.

We buy power transistors in quantity. We also sell these pairs in our parts section. Optionally, the Diff Mod can be added to these receivers to enhance the sound quality even more. These are the best stereo receivers ever built in Japan, in my opinion.

The combination of high power, excellent tone controls, and Sansui tube-like sound make for an unbeatable combination. These amps, especially the , are just amazing little amplifiers. They used old technology for the time with capacitive coupled outputs. With todays 10X better quality caps, and increasing that output cap to a very large value, these amps really shine.

If you only need watts, this amp will astound and really deliver. These amps are very simple inside, and so require a minimum of work to rebuild. The AU is my favorite two channel amp, ever made, of any brand or price. There are a bunch of people on Audiokarma who feel the same way. Audiokarma is a techie Audio newsgroup, with some of the sharpest vintage audio guys I know.

There are several design mistakes in the AU, not surprising, as it was way back at the beginnings of the solid state amp revolution, and many design issues had to be worked out. Many early amps are this way, but the basic sound of the is so fantastic that a bunch of people on Audiokarma, including me, have put a lot of effort into fixing all the little things that are wrong with it.

When made right, it is very clean and musical, with outstanding imaging and detail, and a low end that sounds like it is a DC amp. The changes are many: removing the protection circuit, re-biasing the tone amp stage, adding additional coupling caps to extend the low end, and a mod to the input of the amp section. First and foremost, though, is a complete recap.

As is, the amp will only put out about 30 watts per channel before going into serious distortion. All these mods make the full 70 wpc available. Same price to restore. Often paired with the CA series preamplifiers, these amps feature a toroidal coil winding power transformer, and certainly put out plenty of power. On the BA we add in-line fuses to rail voltage, as often we see blown output transistors. These models can be hard to to work on due to the board mounting style, but have some of the best looking VU Meters around.

For those who want control over every aspect of their sound, the CA preamp offers accurate and extensive tone and amplification adjustments to suit almost any sound desired. Designed to be paired with the BA The AU is the factory upgraded version of the AU The lacks the Mylar coupling capacitors of the AU, which we can add back in, making for a stellar sounding amp.

The is very powerful and probably has the most uncolored, neutral sound of any Sansui, while maintaining the warm and musical nature that is the Sansui signature sound. Sansui made a lot of very expensive looking separates and integrateds later on, but none of them can best this amplifier. These are very powerful amps with big expensive caps, and are difficult to work on, with no plug in boards.

Worth the effort though, if you want that big sound. The power supply board is mounted on the caps and the diamond differential circuit requires extra alignments. We empty the can and put new caps in, allowing the power supply board to mount normally. These are large and very beautiful amps. They are also quite difficult to work on, with no plug in boards, and a rewiring nightmare to rebuild the amp section. The and cost more than the because those two models use the large power supply caps as mounting for a PCB.

These units are also hard to troubleshoot, as board accessibility is just about nil. We have rebuilt quite a few of them, and they are definitely worth the hassle. Probably some of the best looking amps ever made. This is probably the most complicated stereo receiver ever made.

Some parts, like the big oval caps, have to be replaced with components that do not look the same. Although, we have recently found a procedure to open those caps up and put the new ones inside, for aesthetics. Almost twice the power of the series. They sound very good, and are particularly attractive to look at.

They put out way more power than they are rated for. They are somewhat difficult to work on because of the strange method of heat sink mounting.

My first Sansui that I rebuilt was an AU These are nice stereo receivers with a DC amp stage. About 55 wpc — these make a good compact amp for a medium room size. We increase the value of the output capacitors to allow for more low-end. To purchase AU spares or accessories, please contact the company via their website or visit an authorised retailer. Gallery Requests Search. Reviewed Sep 03rd, by jvbeers Superb amplifier.

Submitted by mafer on November 30th, User login Login. Create new account Request new password. Re: Need Assistance Gallery Images. Reviewed Jul 20th, by w7ms. The AU has been in my life since The AU still rocks! Reviewed May 30th, by barsic3. A great amp, One of the best from decade. Nothing to compare with modern amplifiers, only few amp over Anyone out there have the original owners manual that included hooking up the external components such as tape deck, tuner, equalizer, and other components.

I took my amp out to clean it up and vacuum out and cannot remember which wires went where. I took a picture but it did not work. All information appreciated Could any Sansui fans share their listening experience in this regard. Got an Au and just fixed it l First time in 25 years I've heard one love it.

Now want one of these. This website is not affiliated with or sponsored by Sansui. To purchase AU spares or accessories, please contact the company via their website or visit an authorised retailer. Gallery Requests Search.

Sansui Integrated Amplifiers AU Reviewed Jan 11th, by chrisphantom7 Great Amplifier from Japan solid contruction not so great performance on low frequencies. Reviewed May 20th, by bungee Wow what an amp. Reviewed Feb 27th, by Smoke Screen A true top class integrated amplifier.

Reviewed Dec 24th, by jackson magayane It is long life and never lose its sound, heave duty machine. Reviewed Feb 01st, by phcassa It's an amazing amplifier! Reviewed Jan 26th, by coltfan Can any one tell me where to take my amp to get recapped? Reviewed Nov 07th, by ika Perfect for 8 Ohms speakers. Reviewed May 14th, by adlerk76 I purchased the used about 10 years ago.

Reviewed Jul 20th, by w7ms The AU has been in my life since Reviewed May 30th, by barsic3 excellent. Submitted by parsecaudio on August 23rd, Submitted by grump1 on June 29th,