Naim 500 series connected to vintage Technics SB-7000 speakers

Posted by: Salvo on 27 November 2018

Hi all,

(Hope I will be allowed to post this)

sometimes ago I did write to the group wishing I had a chance to connect a vintage pair of Technics SB-7000 to my 500 kit. Well after months of searching I found a pair of the speakers in terrible terrible conditions but wit all the potential to make them good again. so I embarked on a restoration job that has taken me a month to finish. Of the original active components only the drivers and part of the crossover remain, the rest has been upgraded to today's standard. The end result is GOOD, and it makes me appreciate the old engineers did for music listening pleasure. Below is an overview of the steps taken. Hope you enjoy it. I am ;-)

BR,

Salvo

ps. additional modifications have been installed, e.g a 15 cm specially made stool to sit the speakers higher and other bits and pieces.

What I purchased

The restoration process all by hand

 

Posted on: 27 November 2018 by Ardbeg10y

Now, that are woofers, Salvo!

Thanks for posting - I like the looks of these old Technics loudspeakers.

Anyone on here having 10000 series?

Posted on: 27 November 2018 by james n

Nice work on the speaker refurbishment, Salvo. That's an interesting selection of kit you have there

Posted on: 27 November 2018 by Gazza

Really nice job Salvo

Posted on: 27 November 2018 by Tabby cat

Great post Salvo,

Are the Technics useing 12" or 15 " drivers ?

Love the fact you have upgraded the crossover.

Years ago a mate had some big Teac speakers which he lent to me for a couple of months and they sounded great.I can imagine your Technics sounds superb.

BTW is that a Micro Sekki Turntable ?

Posted on: 27 November 2018 by Richard Dane

Very nice work there Salvo.  Did you have to fabricate the grilles?

p.s. Awesome looking Micro TT, by the way.. 

Posted on: 27 November 2018 by Salvo
Richard Dane posted:

Very nice work there Salvo.  Did you have to fabricate the grilles?

p.s. Awesome looking Micro TT, by the way.. 

 

Richard,

not one inch of the speaker was left without intervention;  the grilles have been re-furbished.

Regarding the Micro RX-5000, when I purchased it years ago in was in perfect mechanical order but black finish was in bad shape and the motor needed a service.  I decided to disassemble it in pieces, remove the old finish, change all the caps to the motor electronics and had it powder coated. What you see here is a result of an effort that you make once and never again ;-)

Salvo

 

Caption

 

Posted on: 27 November 2018 by james n

Salvo - that's some piece of kit. I assume the motor is in the box on the left with the speed controls on it. What's the unit to the right of the platter for ? Is it some sort of flywheel arrangement or doing something else ?

James

Posted on: 27 November 2018 by Salvo
james n posted:

Salvo - that's some piece of kit. I assume the motor is in the box on the left with the speed controls on it. What's the unit to the right of the platter for ? Is it some sort of flywheel arrangement or doing something else ?

James

yes James you are right. The motor is on the left and the right there is the flywheel to further stabilize rotation to 0,00% of the 12Kg platter

salvo

Posted on: 27 November 2018 by Richard Dane

Fantastic work Salvo.  It looks amazing.  I'm wondering - with longer belts you could have one part on each top level of three stacks of Fraim.  Hmmm...

I take it that spike on top of one of the leg struts that looks like it belongs on top of a model of the Empire State building is for some sort of dustbug or record sweep?

Posted on: 27 November 2018 by Salvo
Richard Dane posted:

Fantastic work Salvo.  It looks amazing.  I'm wondering - with longer belts you could have one part on each top level of three stacks of Fraim.  Hmmm...

I take it that spike on top of one of the leg struts that looks like it belongs on top of a model of the Empire State building is for some sort of dustbug or record sweep?

Richard, over the years I have tried different combinations. Once I had the motor and platter 1,5 meter apart using an open reel tape. It worked wonderfully, the marriage  was not however :-) 

you're right about the Empire State Building its for the dust sweeper ( you cam see it on the left behind the level bobble).

salvo

Posted on: 27 November 2018 by Tony2011

Pretty impressive what you’ve done, Savo. I rather like the “discreetness” of the Studer in the corner all well.

Enjoy it!

Posted on: 27 November 2018 by Japtimscarlet

That's an amazing collection of kit

You are a talented restorer

Posted on: 27 November 2018 by Salvo

Just for the sake of clarity, The large blue kits you see in the overall picture are not what you may be thinking, They are 2 VUMeter boxes that I have built in order to "see" my music. I would not exchange my 500 series.

Posted on: 27 November 2018 by Tony2011

I hardly see anyone using DAT machines. That’s one format I could not get used to. How frequently do you play that Sony?

Posted on: 27 November 2018 by Salvo
Tony2011 posted:

I hardly see anyone using DAT machines. That’s one format I could not get used to. How frequently do you play that Sony?

not much but I enjoy it when I do!

s

Posted on: 27 November 2018 by james n

Thanks for the info on the TT Salvo i'll have to have a google and find out a bit more about that amazing looking TT.

Interesting about the VU meters as I thought you had some McIntosh kit hidden in there too. 

Anyway, great setup - looks like a lot of fun 

Posted on: 28 November 2018 by LarsDK

How does it sound :-) impressive refurb!

Posted on: 28 November 2018 by Ravenswood10

Nice Studer by the way!