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Here are some pics of The Fez's LOVELY AU-20000 which is here for the full dayspa treatment (but we're not going as far as a triple-bypass, boob-lift, tummy-tuck etc as this amp is in such great nick

Sharing few pictures of my new gear. Sansui AU20000

Okey dokey... @@The Fez 's AU-20000 pictured earlier has been serviced and is now singing beautifully!   A few controls were crackly and the connected/separated switch had the typical corrosion and

23 minutes ago, Shanghai Wally said:

This is a very clear and powerful sounding unique Sansui AU-9500 Clone designed and handcrafted by a unknown Japanese Audiofreak

 

 

Very interesting!
 

I'd probably describe it as something other than a 'clone' (which means an exact replica). It looks to have the AU-9500 heatsinks and outputs, but the rest is quite different and it certainly looks worlds apart.

 

An interesting amp nonetheless!

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Posted (edited)

Hi Pete

You right my discription isn't correct this is very much a handmade amp using parts from the AU-9500  unfortunately dont have any schematics so it would be pretty difficult to repair if major problems show up

well luckily till now the amp works without any issue anyway sooner or later will sell cause to many goodies in the cave

In the moment traveling the V-Fet road with Yamaha  B-3 in BTL Modus with very good results beside the Sansui BA-150,TAC-505 and Yamaha B-2 system this Combo sounds also very good in my ears and create abit the feeling  my Soundjourney could have arrive the final destination 

sorry about my lousy english

cheers mate keep on rockin and have a nice weekend

🍻

 

 

15938112708047033746984914564731.jpg

Edited by Shanghai Wally
adjust layout
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4 hours ago, Shanghai Wally said:

Hi Pete

You right my discription isn't correct this is very much a handmade amp using parts from the AU-9500  unfortunately dont have any schematics so it would be pretty difficult to repair if major problems show up

well luckily till now the amp works without any issue anyway sooner or later will sell cause to many goodies in the cave

In the moment traveling the V-Fet road with Yamaha  B-3 in BTL Modus with very good results beside the Sansui BA-150,TAC-505 and Yamaha B-2 system this Combo sounds also very good in my ears and create abit the feeling  my Soundjourney could have arrive the final destination 

sorry about my lousy english

cheers mate keep on rockin and have a nice weekend

🍻

 

 

Very nice mate! So glad to hear that you're enjoying your current setup so much.

 

And please don't apologise for your English... I was being a bit picky regarding your wording. You communicate very well indeed! :)

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On 05/07/2020 at 7:18 AM, ThestylusGuy said:

Why do Sansui Amplifiers & Receivers still arrive at Scrap Metal yards !!!

Because the world is a very imperfect place.

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IMG_1211.thumb.JPG.3fe425ec980c1df14369a295e17d4ae5.JPG

My new Sansui Room.  Sounds very nice!

Also, it has something to teach me, there is something interesting going on in the combination of those speakers and the rest of the gear.  I think I've worked it out but I need a few more hours to repeat a few tests.  I really love it when a system teaches me something new, it always comes as a surprise.

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1 hour ago, Reidy12 said:

WOW, what is that monster on the floor??  Is this and the alpha 100V Japan models?

That is a B-2302 power amp.  

 

And yes, all the Alphas are 100 volt. 

There are a few exceptions, there were some 230 volt DR series amps (made for the European market I believe) and the somewhat better known MRX versions of the MR series but these are very few and very far between.

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10 hours ago, Cafad said:

That is a B-2302 power amp.  

 

And yes, all the Alphas are 100 volt. 

There are a few exceptions, there were some 230 volt DR series amps (made for the European market I believe) and the somewhat better known MRX versions of the MR series but these are very few and very far between.

Jeff, we need some close ups of both the B/C combo please?? How does it compare to say the newer design NRA?

Edited by Sansui77
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I can do that.

IMG_1216.thumb.JPG.9738e1c5fee09b00bc675307a9473405.JPGIMG_1218.thumb.JPG.8608d57748c3da3c20f82a329ff99cb2.JPGIMG_1219.thumb.JPG.79ed133346b64ff368cc27e90487f25d.JPG

 

The 907NRA has more of a smooth polish to its sound, it certainly doesn't seem to miss much detail when you are listening to it but compared to the C-2302/B-2302 combo I'm afraid it is.  The 2302's are a little more dynamic and a bit more relaxed in their presentation as well. 

 

That comparison above is while using the conventional volume pot on the C-2302, if you use the "source direct" function (which bypasses the volume pot and utilises a stepped attenuator set up instead) then both dynamics and detail improve noticeably.

 

In the area of hard-sung vocals the NRA is right up there with the best but when it comes to soft and delicate instruments the pre/pwr has more detail and a more natural decay.

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Baby sitting a very nice AU 7900 c/o @Phil sydney will be starting a new life in Queensland with @Zedamon lucky boy - She had a sleep over at Dr. Pete Mac's clinic last night, a few small adjustments a sponge bath and a clean bill of health was given. Suggested change of diet.

 

Did a spot of near field listening this afternoon, excuse the cables had to traverse pass a speaker to run a turntable. I don't have any decent MM carts at the moment so the Sansui path is slightly tainted with an external phono.

 

Ortofon Rohmann ruby cantilever - SR 525 - Exposure 26 - AU 7900 - JBL 4313b 

 

Put some flac FLAC files through also which didn't disappoint, could think of worse things to be doing on a Sunday afternoon 

 

IMG_0803.thumb.PNG.4c739b196407f8d5896a295304e8c42a.PNG

 

IMG_0805.thumb.PNG.acb79d18ae24cd48602d9e56e0dcddc7.PNG

 

 

IMG_0802.thumb.PNG.da3e70ccef504eeb0f4b2bb39ea56480.PNG

 

 

Edited by Powerglide
So Luc can sleep
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@Powerglide    Is that TV leaning to the right? It is isn't it. Straighten it up. 😨

 

I keep looking at it... damn this ocd! 🙄

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28 minutes ago, Powerglide said:

It's  the whole house Luc, check the cabinet ..... photo trickery 

Check again it's the sansui..😋that's one heavy bugger

Enjoy the amp @Zedamonand I will be visiting soon to ur wood palace @Powerglide

 

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I have a 7900 and it's not tipping my bench to the right so you need to get up outta the chair and touch the left hand side and pull it down a little bit🤪

 

 Cable management system is a bit similar to mine too as are the your cupboards.👍

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4 minutes ago, Zedamon said:

’m very excited to have a play with it

You'll love the thing.  It has 'utility' in spades and yes it harks back to another era but that's where it shines; got grunt✔️ got phono stage which aint to shabby✔️ got headphone input✔️ you can do lots of things with it and you'll get to know the 'Sansui' sound of these 70's era amps...it's special.

 

I'd doubt you'd ever need to turn the wick up past 11-11.30 on the dial unless you have no neighbours then you could see what it'll really do...

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2 hours ago, Powerglide said:

 She had a sleep over at Dr. Pete Mac's clinic last night, a few small adjustments a sponge bath and a clean bill of health was given. Suggested change of diet.

 

 

 

 

'Twas a pleasure - both to give her a once-owner and tweak, and also to finally meet you good sir! :)

 

@Zedamon you are in for a treat! A superb example of an AU-7900.

 

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  • 2 weeks later...

I started with Sansui AU999, my first Sansui unit.  Tried few different speakers like Celestion Ditton 66, KEF Concerto, Tannoy Arden and B&W804s. 

It performed really well with all of them. It was sad to let it go to welcome the monster Marantz 2600.

 

But my love for vintage sansui remained deep inside in my heart and been lucky to find an AU20000 recently.

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On 3/2/2015 at 8:03, skippy124 said:

Creo que es solo una pausa antes de la tormenta .........

Hello skippy124, I am new to this forum and I would like to ask for your collaboration. It turns out that I have had a Sansui 317 amplifier for 6 years working in perfect condition. Now the left channel stopped working. It started with a background noise when turning it on and then it cut off (the protection relay started working), then it sounded and then it turned off. Now the left channel definitely doesn't sound.

I have checked the output transistors, resistors, capacitors and they also told me to check a capacitor that is connected parallel to the ignition swich. I've also checked the welds but I don't know what to do anymore. I know you have experience with this equipment and I would really appreciate it if you could help me. A while back I read that you repaired a Sansui amplifier.

 

Excuse my English

greetings and thanks

 

 

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Say Hello to my little friend 

 

IMG_0838.thumb.PNG.d7bb81ed0657d96e7eb361e046e841fa.PNG

 

Had this for about 6 years and never hooked it up to any decent speakers, spent all its time running some patio and ceiling mounts over the past summer months. 

A new record arrived today and had all the gear still in place from the 7900 visit so the stars aligned 

 

what a beautiful thing 

 

IMG_0837.thumb.PNG.4f77e27ec4c83447dffe0f72120508c1.PNG

 

Tweaked some Oak stools into makeshift stands (where are you taking those?) Big improvement, removed some booming I was getting at higher volumes, I expected a shift in sound stage but not as dramatic! especially when seated in the sweet spot.

Damm, that TV is on the loose again 

 

IMG_0839.thumb.PNG.a31eb6bb8ea05943cda59bb5d3beeb91.PNG

 

Edited by Powerglide
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I just unpacked a TU-9900 and a SE-9 to test them prior to sorting them out for sale. I have had them for over 13yrs but this is the first time they have been powered up and connected. I checked they are set to 240v before powering them up - didn't want any smoke escaping.

 

Unfortunately, there is very poor FM reception where I am so I couldn't get the most out of the TU-9900. But with the lights on and the meters working it looks fabulous and the switches and tuning knob are soooo smooth. And for lousy reception, it sounded great.

 

The SE-9 is beautifully built and engineered. The auto-magic sliders move effortlessly when the presets are selected. I don't have the set-up microphone but it does come with the rack mount handles which some aficionados will appreciate.

 

It almost makes me want to find an amp to match!

 

IMG_0345.JPG

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Just turned on my first Sansui.

ÀU 517 bought from fellow SNAer. (prob should have checked what a heavy lump it is). Connected to an old CDP with old Mordant Short bookshelf speakers.

 

Well..... It seems the Sansui was designed before the hot signal from CD players and it takes very little on the dial to get to my modest listening level.

 

Online comments even to the effect it can be sent into protection mode if wound up.

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9 minutes ago, eman said:

Just turned on my first Sansui.

ÀU 517 bought from fellow SNAer. (prob should have checked what a heavy lump it is). Connected to an old CDP with old Mordant Short bookshelf speakers.

 

Well..... It seems the Sansui was designed before the hot signal from CD players and it takes very little on the dial to get to my modest listening level.

 

Online comments even to the effect it can be sent into protection mode if wound up.

 

Congrats on your first Sansui!

 

If the 517 triggers the protection circuit when being driven hard, this is due to the overcurrent protection being triggered. This isn't affected by a hot signal... it's all about how hard the amp is being driven.

 

You can install a pair of RCA attenuators to reduce the signal level and provide more useful range on the volume dial (particularly given its a notched potentiometer which means you are forced to adjust the volume in 'clicks'. -12db works well in my experience.  The next model up (AU-717) has a -20db muting switch which is very useful when using modern sources. 

 

https://www.decibelhifi.com.au/harrison-lab-12db-attenuator-pair/

 

https://www.decibelhifi.com.au/rothwell-in-line-rca-audio-attenuators-pair/ (10 or 20db)

 

 

 

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8 hours ago, pete_mac said:

 

Congrats on your first Sansui!

 

If the 517 triggers the protection circuit when being driven hard, this is due to the overcurrent protection being triggered. This isn't affected by a hot signal... it's all about how hard the amp is being driven.

 

You can install a pair of RCA attenuators to reduce the signal level and provide more useful range on the volume dial (particularly given its a notched potentiometer which means you are forced to adjust the volume in 'clicks'. -12db works well in my experience.  The next model up (AU-717) has a -20db muting switch which is very useful when using modern sources. 

 

https://www.decibelhifi.com.au/harrison-lab-12db-attenuator-pair/

 

https://www.decibelhifi.com.au/rothwell-in-line-rca-audio-attenuators-pair/ (10 or 20db)

 

 

 

Thanks for the links.

I did see mention of 'attenuators'. Didn't realise how simple it would be. Might give it a go. Better digital inputs I have in mind might still benefit.

 

Would have thought -20db would be the go since they put that in the AU717 ?

I guess they were still not thinking of a digital input.

Did you try different levels before settling on - 12db ?

 

The Rothwell look much shorter than the Harrison. Do you know if that's actually the case or if it's a trick of the internet ?

Edited by eman
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7 hours ago, eman said:

Thanks for the links.

I did see mention of 'attenuators'. Didn't realise how simple it would be. Might give it a go. Better digital inputs I have in mind might still benefit.

 

Would have thought -20db would be the go since they put that in the AU717 ?

I guess they were still not thinking of a digital input.

Did you try different levels before settling on - 12db ?


Going for -20db attenuation would give a very useful reduction in gain and increase in volume control range. I’ve checked and I actually went with -10db back in the day - via Audio Principe attenuated RCAs and also a pair of DIY jumpers between the pre-out and main-in connections. The latter attenuated the preamp output, so this would also affect the other line-level and phono inputs which may not be desirable.

 

https://www.audiokarma.org/forums/index.php?threads/diy-10db-attenuators.392186/

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..My first Sansui - The AU-4900.  Still remember Skippy giving me the tip about the window cleaner + WD40 regarding the faceplate.. 

 

 

 

 

DSCN5743.jpg

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1 hour ago, The Fez said:

..My first Sansui - The AU-4900.  Still remember Skippy giving me the tip about the window cleaner + WD40 regarding the faceplate.. 

 

 

 

 

DSCN5743.jpg

Thats a ultra clean faceplate. ! :o

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On 07/08/2020 at 7:04 AM, pete_mac said:


Going for -20db attenuation would give a very useful reduction in gain and increase in volume control range. I’ve checked and I actually went with -10db back in the day - via Audio Principe attenuated RCAs and also a pair of DIY jumpers between the pre-out and main-in connections. The latter attenuated the preamp output, so this would also affect the other line-level and phono inputs which may not be desirable.

 

https://www.audiokarma.org/forums/index.php?threads/diy-10db-attenuators.392186/

Thanks. Ordered -20db.

 

Hooked in a TT today.

Only just completed testing to functional point but sounding fine.

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  • 1 month later...
59 minutes ago, Luc said:

Got any blacker?

😉

Yep

IMG_20200926_195040.thumb.jpg.21047b0cde96291db9eb0c8139508b8c.jpg

Got brighter 😉

IMG_20200926_171848.thumb.jpg.6ec0c115414add28cb87468de1d810cc.jpg

50 minutes ago, BLAH BLAH said:

Black Night is a long way from home...😉

I might just throw some Deep Purple on.....

Edited by Sansui77
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  • 4 weeks later...

Hey Sansui folk.

 

Having run my AU 517 a few times now I'm thinking of using the Pre Out to another amp.

 

It does not have preout/power in jumpers like I'm used to.

Instead it has a slide switch, which is fine, except it has two positions for 'separated' . Direct Coupled and Capacitor Coupled.

Can someone tell me what that's about please ?

 

Thanks.

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