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A bit of Nostalgia

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Re: A bit of Nostalgia

Postby vinyl master » 11 Dec 2016 03:41

Tinkaroo wrote:More great ads Klaus!

I have two receivers from the next generation of Pioneer receivers, the SX-535 and SX-939. They made some very attractive receivers in that era.

I also have a pair of the Dynaco A-25 as well as some D-20XL and A-40XL speakers. The A-40XL is similar design to the pictured A-35 except it uses the next generation of drivers which were supposed to be more efficient. Same divided box design however. They were great value considering they have lasted as long as they have and are still sought after.


Do love those ads...Especially the Dynacos...When it comes to those A-25's, "Unquestionably the greatest value" is still true today! =D>
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Re: A bit of Nostalgia

Postby dualcan » 11 Dec 2016 05:52

Let's put a bit of blood sweat and tears into this nostalgia!
72-8-2.jpg


...and now for a bit of book-learnin':
72-9-06.jpg

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Thank goodness the copy editor didn't invert both H and K's for that 150+ :-" ....

Moving right along, we get even more of everything!
72-9-08.jpg


And because the Duals are selling like hotcakes (we couldn't supply enough at this time), it was time for Noresco to be honest- honestly 8) :
72-10-01.jpg

Stay tuned for more- Honestly!
k
Klaus Adlhoch, fmr. Assistant Service Manager,
Noresco -N.Q.I.-Dual of Canada,
Area of expertise: Tech Training and Consumer Service P.R.
Associated with Dual till Thompson era.
Favorite Duals: TG 12a, 1009, 721.
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Re: A bit of Nostalgia

Postby vinyl master » 11 Dec 2016 07:05

Well, Bobby is right about one thing...There are a lot of toys on the market masquerading as hi-fi...And what he said then still holds true today, except they don't try to hide it!
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Re: A bit of Nostalgia

Postby Tinkaroo » 11 Dec 2016 13:47

I have a couple of Pioneer receivers from the next generation, a SX-535 and SX-939.

The SX-424 and others from that lineup used the plug in speaker connectors that seem to have been easily lost over the years so generally cost a lot more to replace than they should.
They dropped that connector on the next series and went with the more common type.
They are a very attractive looking series however,and undoubtedly one of the best looking from that era.

The SX-424 is rated at 12 watts/channel RMS at 8 ohms.

A good competitor on that level is the Harman Kardon 330B which was also more reasonably priced for the entry market. Many young people started out with equipment like this they could afford and worked there way up.

The top of the line SX-828 had a MSRP of $470 and put out 54 watts/channel RMS at 8 ohms which is similar to the Sansui 5000A which is also a very fine receiver.
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Re: A bit of Nostalgia

Postby vinyl master » 12 Dec 2016 08:31

Tinkaroo wrote:
The top of the line SX-828 had a MSRP of $470 and put out 54 watts/channel RMS at 8 ohms which is similar to the Sansui 5000A which is also a very fine receiver.


You're right, Tink...They're very similar...I believe my 5000a puts out 55 wpc, and although I also like my SX-450, I wouldn't mind finding a 727 or 828 at a nice price...These are all fine receivers, and very well-built...A newbie would do well with any one of them... :)
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Re: A bit of Nostalgia

Postby Tinkaroo » 12 Dec 2016 12:31

vinyl master wrote:
Tinkaroo wrote:
The top of the line SX-828 had a MSRP of $470 and put out 54 watts/channel RMS at 8 ohms which is similar to the Sansui 5000A which is also a very fine receiver.


You're right, Tink...They're very similar...I believe my 5000a puts out 55 wpc, and although I also like my SX-450, I wouldn't mind finding a 727 or 828 at a nice price...These are all fine receivers, and very well-built...A newbie would do well with any one of them... :)


It was with the next series that the receiver power wars really started to heat up with the SX-1010 being rated at 100 watts/channel RMS. This is considered to be the first of the monster receivers. My SX-939 is rated at 70 watts/channel. Most of the big players in consumer electronics followed suit such as the Sansui 9090 at 110 watts/channel as one example.

The SX-450-1250 series brought a complete change in style with the silver Pioneer styling.
The SX-1250 has a lot of power and is highly sought after, but some of the models below the top were also great performers and can often be more easily found at more reasonable prices.
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Re: A bit of Nostalgia

Postby dualcan » 17 Dec 2016 20:27

Let's start this set with a new Lenco, the GL85P:
72-10-08.jpg


Next, we hop over to merry olde:
72-10-09.jpg

This next ad was the one which enticed me to purchase a quantity of these instruments for Noresco in Montreal and for myself:
72-10-10.jpg


The test apparatus next, is actually an outstanding Polish product from the firm Meratronik:
http://www.meratronik.com/
Its original name is meratronik V640 and its incredible 72 ranges allows for a display of 1.5mv (full deflection). That level easily permits measuring cart outputs including moving coil, directly. It was also sold by Marconi as TF 2650.
In almost all my service pictures, this unit can be seen on my worktable and still performs that function today. It was invaluable for tape and cassette alignments as well.

Up next is an Elac test report:
72-11-1.jpg

Keep an eye on the wow and flutter results, I'll come back to that in a while.

Last item today, is a family portrait of Dynaco including the electronic items.
72-11-6.jpg


Regards,
k
Klaus Adlhoch, fmr. Assistant Service Manager,
Noresco -N.Q.I.-Dual of Canada,
Area of expertise: Tech Training and Consumer Service P.R.
Associated with Dual till Thompson era.
Favorite Duals: TG 12a, 1009, 721.
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Re: A bit of Nostalgia

Postby dualcan » 11 Jan 2017 18:19

Time to dust this thread off for another year.
The first item is a light discussion on the "loudness factor" and the ubiquitous Loudness button that can be seen on many amps. Here is a paper from Dr. Toole:
72-11-2.jpg

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and here are some units with these "loudness compensators":
72-11-7.jpg

72-11-8.jpg

Till next time,
k
Klaus Adlhoch, fmr. Assistant Service Manager,
Noresco -N.Q.I.-Dual of Canada,
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Associated with Dual till Thompson era.
Favorite Duals: TG 12a, 1009, 721.
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Re: A bit of Nostalgia

Postby Tinkaroo » 11 Jan 2017 20:47

I don't remember the Hitachi receivers ever catching on but they made nice TVs.

The Sansui Seven is a really nice receiver. The Eight and Eight Deluxe were the top of the line from that series.

Harman Kardon called their loudness position a "contour" switch.
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Re: A bit of Nostalgia

Postby vinyl master » 11 Jan 2017 23:15

That Seven is lovely, Klaus...I wouldn't mind owning one myself, if one came up at the right price...Of course, the "Eight" series models are also keepers...
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Re: A bit of Nostalgia

Postby Klaus65 » 12 Jan 2017 23:06

Great article on the "Loudness" function Klaus. I knew that feature was a bit questionable at best. I bypass all tone controls and have been for some time. In other words I run my amp completely flat. Love reading this tech stuff!!!
Klaus K:"Reinvigorated vinyl enthusiast"
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Re: A bit of Nostalgia

Postby Melos Antropon » 13 Jan 2017 05:41

Tinkaroo wrote:Harman Kardon called their loudness position a "contour" switch.


Some years before that, Stromberg-Carlson ("console" stereo era) also called their loudness control "Volume Contour".

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Re: A bit of Nostalgia

Postby H. callahan » 13 Jan 2017 07:28

I´m really fond of these technical articles about audio - that´s why i´m afraid, but i think you missed to scan p.23 on the Loudness-article. There´s a "gap" in reading and the article says "continue on p.23" but the next one is p.46 - where it says "continued from p.23".

Sorry for nogging, but would love to read p.23, too!
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Re: A bit of Nostalgia

Postby Guest » 13 Jan 2017 08:36

Klaus65 wrote:Great article on the "Loudness" function Klaus. I knew that feature was a bit questionable at best. I bypass all tone controls and have been for some time. In other words I run my amp completely flat. Love reading this tech stuff!!!


You must have the only acoustically "perfect" listening room in the world then.
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Re: A bit of Nostalgia

Postby dualcan » 13 Jan 2017 19:56

Hi,
The absence of page 23 was purely tactical to see if the stuff was being read 8) :^o :mrgreen:
Without further delays, here is page 23:
71-11-23.jpg

Next we have a revox family portrait. ----Hopefully Charles will be able to resist this Euro beauty because this one is "big bucks-no whammies"....:
71-11-revox.jpg

To get an appreciation of the prices for TT's in 1972, here is a listing of many manufacturers:
72-12-2.jpg

72-12-3.jpg

It might be a good idea to skip the Wow and Flutter specs in these two pages-
the 1214 seems to outperform the 1229- not!

Just to "round" out this set, a nice shot of a Thorens:
72-12-1.jpg


My scan folder is empty and until the next 12 issues are loaded, have a good one!
Regards,
k
Klaus Adlhoch, fmr. Assistant Service Manager,
Noresco -N.Q.I.-Dual of Canada,
Area of expertise: Tech Training and Consumer Service P.R.
Associated with Dual till Thompson era.
Favorite Duals: TG 12a, 1009, 721.
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