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I have an old but still good Technics stereo system. I want to keep the system but replace the large, klunky speakers with a smaller, more modern pair. Can I buy any, or are there any considerations which I need to be aware of?

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To protect the system, check the Ohm (ω) rating for the original speakers, which are most likely 8 Ohms (or perhaps 4). This is a measure of their resistance. You should only replace them with speakers of the same resistance (or higher). If you match them, you'll be OK, but if not, there is a vast amount of information on this topic available on the internet.

Note also, that it would be useful, but not critical to match the speaker sensitivity, which is measured on a dB scale - unfortunately, this specification is not always available. If the sensitivity is much lower on the replacement speakers, they will play quieter than you were used to with the original setup. If you have to crank up the volume to more than 80% of max on your system, than you may start to get distortion and will strain the system.

Posted on Dec 01, 2008

  • bug powder
    bug powder Dec 01, 2008

    Note - the symbol for the Ohm didn't display properly in the solution text (at least for my view). It's the Greek symbol, Ohm.

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Can I replace the speakers on this system? Speakers are too large for space & want to replace with another brand.


make sure impedance is the same so 6 ohms and the power rating of speakers is no less than 200 watts peak rms.And bare wire ports on back of speaker.
The power rating is so the speakers can handle the maximum power delivered by stereo amplifier without burning out speakers coils.

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How do i replace capacitors in an old tube radio


With care! Some of them can hold a nasty charge still!

You can use modern types, just stick to the same ratings of the old ones. The modern types might be smaller than the originals. So getting them to fit might be a problem. You might have to get some clamps or cable ties to keep them in place.

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My technics sh-eh780 stereo seems to work but the sound is very dull in sound


Unless there's an issue with internal components of the amplifier or speakers, a common cause of this is reversed speaker polarity.

The wires between the + and - terminals of the speakers MUST connect to the same + and - terminals on the back of the stereo amplifier. The speaker wires that came with the stereo are color coded to help prevent mis-wiring. If you did not pay attention to this or used different wires for any reason, you need to ensure that the wires between the each of the speaker's 4 terminals connect to the correct group and + / - terminals on the amp.

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See page 6 of the manual here: https://support.panasonic.co.nz/docstore/SC-EH780%20Operating%20Instructions.pdf

Make sure that the surround and center speakers are connected correctly, too.

Good luck!

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Any 5.1 surround system will work with this. It is better to be high in impedence than too low.

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Is there any good record players for under 100 pounds? (UK ONLY)


A brand that has a solid reputation but may be hard to find in your area is technics. I would think you could find one to fit in that price range. You could for sure find a Pioneer in that price range and they are not bad at all. These are vintage, not new, I am talking about but they will outperform most consumer made ones of today.

Nov 12, 2012 | Audio Players & Recorders

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I inherited a technics SL-6 turntable system and a very old sears audio by fisher am/fm stereo receiver along with 1 pair of kenwood ks-401ht front speakers and cant get any sound. I have the technics...


Your connections seem to be right.

Let's distill this down to its simplest configuration... does the onboard FM produce sound? If not, nothing will.

NEVER USE MAXIMUM VOLUME FOR TROUBLESHOOTING.

Turn the volume control to something medium.

The errant switch, control or condition may change and you will suddenly release the amp's full power and possibly destroying your speakers. If a signal isn't audible at 1/2 volume it's probably not there.

Carefully examine the front panel for clues like a misplaced Mute or Tape Monitor control or Multichannel Analog Input selected.

There is a good chance that a common control may have developed a high-resistance or 'dead' spot through idleness and is causing your symptom. Turn the POWER OFF and operate every control throughout its range a number of times, especially rarely-used ones like Tape Monitors and the Mute control.

Turn the volume to something reasonable and see if that helped.

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Over Load light turns on and then we have no sound


please disconnect each speaker one by one and test it until you find the bad one-start with cable change and then the speaker itself.

Jul 04, 2008 | Technics Audio Players & Recorders

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Can't hear any sound from the large left or right speakers


is sterio in a ch ? not b or is it in b and not a when u hooked it back up

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'stereo' speaker problems


Yer man there a load of **** i've got 2 x DV290's one for the back of my studio & one powering the front,your lucky you only had 2 **** speakers i had 4 lol.
but there is light at the end of the woofer,they have to be wired together its as if one makes the other one work,so you put GRAY & BLUE in you get BASS or hum ,you put BLACK & RED in you get HIGH or top end you put all four in you get nice mixture.
I've also had it another by mistake & it worked, i put the + & - side by side instead of top & bottom so it was RED / GRAY & BLACK / BLUE if you know what i mean.then cut the plugs off the surrounds & wired them in aswell & it's all good in de hood.
oh a tip before i go,get some rubber legs off the bottom of something or the casters off an old chair or stool & GET THEM SLAPPED BETWEEN THE AMP & THE SOUND PROCESSOR for ventilation coz Fu*"*k me they don't half get hot man!
good luck pal....later








Aug 12, 2007 | Technics SC-DV290 System

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