• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Technics SB-7000A

Project 2501 asked some time ago about replacing foam that was being discussed for the 7000. I have found that the speaker surrounds have a type of rubberized foam, and do not deteriorate, as evidenced from ownership since 1975. They are still fine. The foam that deteriorates after about 10 years or so is the foam piece that was placed originally under the midrange driver's ledge to tame it somewhat. I replaced it with pieces of leftover carpeting I had. They are thin and have rubber backing. I hand trimmed them to fit, and they work fine.
I'm seeing less and less of these Technics speakers available for sale over the years. The ones I do see once in a while tend to be beaten and/or missing drivers. Not only that, but the prices are also going for around $600 on up. A far cry from those that said in the past that they wouldn't pay more than $200 for them! I don't doubt for one minute that they will be found selling for a grand pretty soon [in good condition]. There was a pair of 6000's recently that looked like they were pulled from a lake. They were beaten and the seller was asking way too much. They should have been left in the lake. lol
 
I can see the price going up with a very , very clean set . I would part with my set for 800.00 in near perfect condition , one owner , I think they are selling a single tweeter for 200.00 a piece. You could probably part them out for over a 1K on the low end .Have extra tweeter I would be selling as part of a deal ? Not looking to sell , but I could use a little room , with some AR-90 waiting to do some work on , Kef 104.2 & 103.4 , NewFoam Reserch V645 here..
These speakers love power , 15 inch drivers are you kidding me . My Sansui 9090DB gave its all to them .135 watts a channel .Really
 
Last edited:
ive had those and the sb-7070..i think the woofers are the same 14 inch..i sent my to simply speakers to be redone on the sb7070....those are nice speakers.
 
I have a pair of SB-7000a that need surrounds. Mine are torn. I’ve looked around and couldn’t find the right size foam or rubber surrounds. Everyone says bigger surrounds have to be cut down to fit.

Maybe I’ll contact Simply Speaker and ask them if they have the right ones.
 
Mine are also very clean and I won't [at this time] sell them. I am the original owner and have kept them almost in mint condition over the years. I have an extra tweeter and a pair of midrange drivers stored if I ever need them. If I ever do sell the 7000's I will let the extra drivers go with the speakers or sell them separately. Your correct about the tweeters going for $200.00. I've seen them for as high as $250.00. The woofers [mine are still perfect] are an 'off size' being 14 inches. The surrounds should last very long, like mine if treated well. I won't be needing new surrounds for a long time...possibly never. The only service the speakers ever had was a recap. 1975 they were purchased. I read on another thread if replacing them, they must be cut down from other surrounds, just as elitopus states. Those AR 90's are nice speakers. I auditioned a pair at one time years back. Had the Kef 104.2 at one time, until it needed new foam doughnuts, and crossovers......then my kid put one of his toys through a woofer. He's with his mother now...lol. Just kidding...that was sooooo long ago. Mom and I are now 70 and retired.
I also had a Sansui 9090db with 125 watts per channel. Sounded great while it worked. It lost the left channel, which I had repaired...then lost the right channel which I again had repaired. Received it back from the shop, and a channel went out again. I had enough and traded it in on new equipment. With hindsight, the problem with the Sansui was the Dolby circuitry which was very difficult to maintain and gain access to. The Sansui 9090 without Dolby [110 wpc] was a better receiver I believe as far as reliability. I had a Marantz 2325 restored in 2010 and it has been a champ ever since. Thats another story.
 
I'm not looking to increase my speaker collection at this time. Too many others and the house can't handle any more.

Magnepan MG 3.6
Technics SB 7000a
B&W DM 610i
Polk Sda 1a
General Electric G506
B&W DM 602 S2
JBL L100a
Polk S4
Toa G300

Subs:
Rythmik HP 15
Infinity 12"
Boston Acoustics 10"
Bic 10"
Elac 10"

THE HOUSE IS FULL
 
Wade Kuzen said:
I'm not looking to increase my speaker collection at this time. Too many others and the house can't handle any more.

Magnepan MG 3.6
Technics SB 7000a
B&W DM 610i
Polk Sda 1a
General Electric G506
B&W DM 602 S2
JBL L100a
Polk S4
Toa G300

Subs:
Rythmik HP 15
Infinity 12"
Boston Acoustics 10"
Bic 10"
Elac 10"

THE HOUSE IS FULL
Click to expand...


I have a pair of B&W 604 S2's and love them. And a B.I.C. 12"..very happy with that as well.

I always lusted for the Technics gear from that time period, it coincided with my developing an interest in audio at the time.
 
My Technics came from a guy who used them in his metal fab shop. Needless to say, they had a lot of metal stuck to the magnets. I got them dirt cheap along with this Technics integrated.

I’d like to either find some surrounds for the woofers, or find a pair of donor woofers.

Btw, I checked with Simply Speakers. The only surrounds they carry that will fit the SB-7000A have to be cut to fit.
 

Attachments

  • 4B708F8B-621D-460F-A539-31065A9F054E.jpeg
    4B708F8B-621D-460F-A539-31065A9F054E.jpeg
    202 KB · Views: 42
  • 1122229C-25BE-41B1-A346-7D798EB75558.jpeg
    1122229C-25BE-41B1-A346-7D798EB75558.jpeg
    125 KB · Views: 39
WOW! Bet those were fun to clean up. How did you do it? You are correct. I read in forums from way back that those woofers surrounds needed to be cut to fit for replacement, as they were not ever made available. I also read that the woofers were made by Jbl, whether or not that is true. I own one of the earlier released 7000A pairs. These are the ones without the fuses placed behind the tweeters.
 
Technics always had great gear. Their turntables received most of the attention. They had great reel to reel and cassette decks. Great amplifiers and receivers. Depending on the speakers, some were really great. Some just so...so... The linear phase were some of the very good ones. They had some monsters also, but mainly released in Japan.
 
Wade Kuzen said:
The 6000s were nice as well. Not as much bass, and thinner midrange; but the treble was just about as nice. Very nice sounding, until my friend blew both tweeters. I have seen two different variations of the tweeter on the 6000s. the only difference I could see was that on one of them the tweeter magnet protruding from behind was thinner than with the 7000s. I remember my friend had quite a hard time keeping the cat's claws away from those grilles. lol. Wished I would have taken them off his hands when he got rid of them. The linear phase speakers from Technics are getting more and more harder to find, let alone nice ones. One must be a handy man with repairing them.
Click to expand...
The 6000a’s have an upgraded tweeter .. it’s not the same as 7000a .. they sound great .. I got both sets
 
comish4 said:
Sold these speakers new as with the entire Technics line in that era. Had a set myself up until a year ago as wife was yelling about too many large speakers had to thin the herd also. Great speakers and if the tweets stop working they are an easy fix, I believe i posted it on this site years ago.. Good luck
Click to expand...
I search for your tweeter fixing instructions but no luck .. do you have a link on that ?
 
I remember the instructions very well on how to repair them. I experimented on a used/not working unit to no avail. You have to first unscrew the four allen nuts holding the tweeter together from the front. Carefully pull off the square silver front away from the extremely strong magnet. Leave the fiberglass stuffing in the dome part of the tweeter intact. What you are looking for from the underside of the tweeter are the voice coil wires...as thin as a hair. they are wrapped around the circular metal piece and then routed to the end of the tweeter. You must make sure there are no breaks, and if so, they must be repaired. I was unable to do this. You need a razor blade to work with, and an allen wrench. There is a type of thin paper on top of the voice coil wires which may have to be scraped off to perform surgery on the tweeter wires in an attempt to splice/solder back together. While at it, check for any rust and scrape off. That whole procedure is a test of one's skills. I am not talented enough to do this, but it can be done successfully. Another thing to be careful about is reassembling the tweeter as those magnets must be centered, which is a hard thing to do because of the strength of them. Sometimes they shift and just need to be recentered, thus making all of the other steps unnecessary.
 
You must log in or register to reply here.
Back
Top Bottom