7/13/2010

TECHNICS PHASE LINEAR SPEAKERS - SB4500A

In the late 70s Technics started making speakers with a "linear phase array" design wherein the transducers were staggered so that all their coils were lined up in the vertical plane. This led to a number of unique speaker styles, many of which never had much of an impact in North America judging by how rarely I have ever seen them around. There were two main styles: a "box" style where the mid-range and high-range transducers were simply enclosed in boxes stacked atop the woofer enclosure, and a "horns" style where the mid-range and high-range transducers were fronted with horns. The latter style had rosewood-veneered woofer enclosures, and if you were a US serviceman living in Germany you could get them with drab-olive enclosures. Crazy!
Apart from being good speakers they are unique furniture pieces, with rosewood veneer woofer enclosures and dark fabric covers, and two charcoal-grey drivers.There's not a lot about them on the web. I do like the look of them. They have a real vintage feel and still settle in nicely to a rooms decor without causing a major domestic. ;(
I will be posting the reconditioned images upon completion. I Hope to update the crossovers as well.






18 comments:

  1. Yes, the Technics line of speakers sounded quite good on most any equipment; much better than their electronics(receivers and amps)

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  2. I have two of the Technics SB-4500 speakers (the little brothers of the ones shown in the picture above). They don’t have any wooden furniture (well, they are made of wood, but black painted).
    And I agree – they really sound great and punch a lot of bass (also treble). Mine are in mint condition too, which makes them just awesome together with my Technics SU-7300 amplifier.

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  3. I have just picked up a set of these and am yet to test them out but the drivers are in good condition. They also came mounted on some unusual stands, I'm not sure if they were some kind of option for them or simply a previous owners idea.

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  4. where can i get a set of these

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    1. Ive just put a set on ebay one needs tweeter and sub refurb
      cheeck it out

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    2. I just posted a pair on Craigslist Indianapolis:
      https://indianapolis.craigslist.org/ele/6049926880.html

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  5. These are hard to find. This set is the only one I have come across. I am in the process of restoring them to perfection. I will keep you all updated!

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  6. Thanks for the comments. Technics did not have an optional stand for these cases so I suspect yours were an aftermarket add on. Glad you like them as much as I do!

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  7. I have two of the Technics SB-4500 speakers too with Technics SU-7300 amplifier. bought in 1978 by my older brothers and still sound great.
    greetings from Tarapoto-Peru.

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  8. I just bought a pair of these speakers used. I am only missing the plastic cylinder that screws on back to hold the speaker wire on. Does anyone know what they are called, and does anyone know where I could get one. If I can't, could I use something else in its place?? Thanks so much!!

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    1. These are usually called Speaker Terminal cups or wiring cup. Your best bet is a hifi repair shop or ebay to try to find the proper replacements. Thanks for visiting!!!!

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    2. I lost the terminal wiring cups in a move. I replaced them with pieces of 7/32" (inside diamter) soft plastic hose.

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  9. wow, these suck. The driver quality is poor but I do like the cabinet design. I bet if you mod the crossover and use a better tweeter- Seas or Audax etc.. these could kick. Otherwise, Technics in the 60's and 70's -vintage audio peak, were way down on the totem pole of best bet audio. Harman Kardon, Luxman, Marantz, Yamaha all offered better receivers, integrated and power amps. Technics, with the exception of their higher end turntables and power amps, were more entry level than the others

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  10. hey whats up folks. Just picked up technics 4500 speakers from my moms house. Bought them in Germany in 1978 while in the Air Force. Married, with kids, home, car, career, everything else. Just bought the Crossley AM-FM/cassette/album-to-cd system. Works fine, but needs a boost in the sound department. Even though the Crossely uses a ceramic needle, when i hooked up the 4500s, "BOOM", just like the good old days. My speakers are still in mint condition, sound great, and kept me from going to Best Buy to buy a new pair of "whatever" speakers. I must give everyone a tip (if you didn't know already): Always use Monster Cable for anything thats dealing with speakers. Nice chatting with you guys. I'm out. "TECHNICS FOREVER".

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  11. A friend of mine gave me a pair of these the other day. I plugged them into my existing setup and only one plays. I tried the reset buttons on the back and still nothing. When I took th ebroken one apart and put my speakers wires to the terminals of the broken very little sound came out of the woofer. I am a complete noob to this so if anyone could provide me a direction to go in before trying to have the woofer replaced. Thanks.

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    1. I have a different model but similar also kind of rare... technics SB L 300 . they have a mid and then a horn above that. These speakers rival many high end speakers out there today for clarity and great bottom end and I don't see too many on the web recently either... I sold audio equip in the seventies but never looked twice at technics speakers back then..

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  12. Hello Everyone, I have had a pair of the Technic's speakers with the mid-range and tweeter mounted on top of the cabinet. The #'s I see on the back are SQX4691, but they look like the photo I see of the SB-6060. A friend gave them to me bout 15 years ago and I used them for a while and they sounded awesome, great bass! they have sat in my warehouse for a few years and I just decided to sell them, but discovered the foam around the woofers and the woofer cones themselves have holes in them. When I plugged them in and cranked the volume, I could not believe they still sounded great! No vibrating from the holes at all! I live in San Diego, anyone interested in these speakers? I could e-mail you photos. Bret

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  13. I just got a pair of Technics SB-4500. They were stored in a warehouse for a long time, but are in a perfect condition.
    I plugged them in to a Sansui AU-7900 AND i REALLY WAS SURPRISED for the terrific sound, specially in the bass spectrum. The rigid construction and the good quality of the drivers make them excellent performers specially of rock music.
    If you see a pair of them, don´t miss the oportunity ... get them.

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