Author Topic: My Vintage Collection: Time for some Housekeeping - or not?  (Read 47497 times)

Online charles

Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #240 on: January 17, 2016, 04:23:02 PM »
I must stop reading your posts as it may be contagious.

Busy with a "new" acquisition.

Offline Family_Dog

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Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #241 on: January 17, 2016, 04:49:57 PM »
Charles, we are both goners, there is no hope nor cure for either of us.


-F_D



-Eric

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Offline King_Julian_S

Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #242 on: January 19, 2016, 08:30:47 AM »
Charles ... Am I reading right...
Are there KT88's in the AU111 ?
Never checked mine inside...

Non audiophile music lover...

Offline Family_Dog

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Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #243 on: January 19, 2016, 04:23:26 PM »
6L6GC, but KT88s will probably work. Haven't checked the specs yet to see if it is an exact match though, but I should imagine so.


-F_D



-Eric

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Offline King_Julian_S

Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #244 on: January 19, 2016, 07:04:51 PM »
Great ... Thx... I hope it can cause the. I can fit those exotic EAT kt88's and see what it sounds like...
Charles can you let us know if it is similar and just plug and play ?
Non audiophile music lover...

Offline Family_Dog

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Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #245 on: January 19, 2016, 09:41:52 PM »
So the "new" TA-N77ES with new meter lamps fitted...



Apologies for the crappy cell phone pic.

This is playing over the Tannoy Monitor Golds in enclosures built by Perfectionist a couple of years ago and coupled to the long-last ST-S222ES tuner and a TA-E2000ESD processing unit. Graphic equaliser not indicating anything because I am running it in flat Stereo mode.

The TA-N77ES amplifier uses 6 x 12v globes in series for the meter display. These were last selling at $17 each from Sony - and they did not last long at all. I find it much more economical to get hold of a rope light - the kind used for Christmas trees - and strip the rope lights for the 12v 100mA globes, exactly what the Sony uses. As I got these from a friend at work, they cost me a total of.... nothing! Don't know how long they will last but I do have a plan B in place if they do not last.

So Craig, what's next?


-F_D



-Eric

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Offline stevew82

Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #246 on: January 19, 2016, 09:50:50 PM »
FD, It reminds me of the power amps I used to stare at for hours at Hamrad when I was very young. Congrats - she looks fantastic

Offline Chingy

Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #247 on: January 19, 2016, 09:54:53 PM »
Sony es rca cables  :giggle:.
Now we just need a pic of both 77s running as mono :groovy:
VA BW Pre, Gunter Bolero Mono's, Tannoy Chevoits,Linn Index on Kan Stands, VA BW Mono's, Tara Labs Helix 8 BSM Termination
Power trio (guitar, bass, and drums)

Offline Family_Dog

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Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #248 on: January 19, 2016, 10:04:11 PM »
Steve, you and me both! And I simply used to drool over the McIntosh valve amps of the period as well.

They're in two different rooms, Craig. And as you know, they are damn heavy! I even repaired it onsite where the pic was taken - much easier to cart soldering iron, globes, screw driver & side cutters to the amp than to cart the amp to the workbench which still has an equally-heavy open Sansui AU-111 lying open on it. But I guess I need to make a plan - that would probably mean yet another visit to/from Ora69 for same.

During the repair process, the multi-tool Philips screw thingie fell out of the handle and deep into the innards of the amp. Of course. But with the able assistance of a torch and magnetic pick-up, I was able to retrieve it safely. Sure beats stripping the whole amp to find it.

The VU-meters give a brilliant red glow with the new (albeit second-hand!) bulbs fitted, the colour is not right in the pic, guess  I should have turned the lounge lights off when I took it. But then I would probably have tripped over the dog who was most interested in what I was doing.


-F_D



-Eric

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Offline Family_Dog

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Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #249 on: November 28, 2016, 07:04:50 AM »
Reading kubusi's thread on the restoration of his Mullard 5-10, I realised I had not yet posted pics of mine in this thread. For what it's worth, it is a rebuild of a nearly 50-year-old amplifier and I still have to build its mate. Once again it was totally stripped down and the chassis was powder-coated. The transformers are Partridge.


Here is the finished product undergoing some workbench testing:




It originally had a 8+8uF electrolytic cap as the DC filter caps but I replaced this with a modern 50+50uF cap, as evident in the pic.


-F_D
-



-Eric

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Offline Ampdog

Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #250 on: May 11, 2017, 12:52:11 PM »
Charles ... Am I reading right...
Are there KT88's in the AU111 ?
Never checked mine inside...

DANGER NOTE!

Just found this interesting thread while coming here from F_D's note regarding the Mullard 510 in another thread.

BUT:
I cannot seem to find the relevant post from Charles referred to above, but one does NOT put KT88s in the AU111!!  Beside a significantly higher heater current than 6L6, the characterisitcs are sufficiently different to upset the power stage. With due respect, some people think that merely replacing a power valve by a 'more powerful' one (sic) will give a higher output.

Such is not the case; the maximum output of any amplifier is governed by the available h.t. voltage and somewhat by the circuit design, NEVER by simply a 'stronger' valve. In the AU111 the power stages are somewhat unbalanced regarding phase compensation at high and super audio freuqencies, which may further be upset by valves significantly different from 6L6.

Sorry about the late remark (hopefully not too late!); I noticed the otherwise very informative topic only now.
« Last Edit: May 11, 2017, 12:55:28 PM by Ampdog »
Audio must be the only branch of engineering where lack of basics' knowledge is considered a superior form of wisdom. (Anon)

Offline King_Julian_S

Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #251 on: May 11, 2017, 02:06:38 PM »
Would never even try it anyway without asking an expert to do it ... was just asking when I had that spare set kt88 around...

Now I am disappointed cause Oom say this is the only post that was not informative

Non audiophile music lover...

Offline Family_Dog

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Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #252 on: June 30, 2017, 10:11:38 PM »
Just testing Postimage since Photobucket went belly-up



Pic is of a Trio 106 FM tuner, valves, that I bought with my Army pay back when the Government of the time decided the country would collapse unless I did my military service after leaving school. Notice the FM tuning range, which is common in Japan.


-F_D
« Last Edit: June 30, 2017, 10:19:13 PM by Family_Dog »



-Eric

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Offline fdlsys

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Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #253 on: July 01, 2017, 12:30:38 AM »
Not showing.
Forget it, it's my Tapatalk...
« Last Edit: July 01, 2017, 12:36:24 AM by fdlsys »
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Offline Family_Dog

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Re: My Vintage Collection: Time for some Housekeeping - or not?
« Reply #254 on: July 01, 2017, 09:40:27 AM »
Interestingly, I note that the US versions of this tuner cover the FM band from 80 - 108MHz, not 76MHz as my two units do.The unit above was bought new in 1963 from Wild & Marr and is original in all apsects, same valves. The tuner is standing on top of an upright piano which we were moving from one side of the lounge to the other and it took a tumble on to the parquet flooring A tiny dent in the blue metal cover which I managed to straighten, one valve popped out of its base (still worked when I plugged it back) and both 6.3v dial lights dropped their filaments. I replaced those.

Internals photo below courtesy of Radio Musuem.org




-F_D



-Eric

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