Question about Vintage Jukebox External Speakers Shelf System

1 Answer

Hifi speakers can you explain how to use a multimeter to check my hifi speakers. i think they may need to be reconed. thanks

Posted by on

  • Alan Hood May 11, 2010

    Hi Calu,



    Have you looked at your speaker cones to check if they require reconeing?

    You need to look for any tears in the cone or if it has a foam surround see if this is perished.



    Regards

    Alan Hood

    ami-man

    UK

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 4,234 Answers

An ohm meter can determine only if the coil is open. For an 8 ohm speaker (impedence), the resistance measurement will be around 6 ohms. Why do you think these need reconing? Are they noisy?
Dan

Posted on Mar 18, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Sony hi fi mhc-55 no sond


The audio output chip is probably shorted, check speaker wires for shorts just in case, if okay! the audio output semiconductor needs to be replaced.

Mar 20, 2012 | Sony Multi-System Mini Hifi Systems / DVD...

Tip

Basic HiFi troubleshooting.


First things first. The unit doesn't switch on.
- Is it plugged in?
- Is the fuse blown?
- Does it look like it's suffered damage?

It switches on, but won't play anything / the lights come on, but no sound.

- We'll start at connections. Is your MP3 player/ iPod/ CD player/ record deck plugged in correctly?
- Are the speakers plugged in correctly/ at all?
- Is it in protection mode - this is a pretty standard thing now, where the amplifier tries to deliver more than it's rated current (ie, into a short circuit), and it cuts out. The only way to fix this is to take it to a local hifi shop, who will reset it (there's usually a small fee involved). The unit will be fine after that.

------- There is no bass. ----------
A few causes for this, so there's a few solutions.
- The speakers are out of phase. This is where one speaker is wired normally, one is wired in reverse. The bass from each speaker is "opposite" and would cancel out. To solve this, Make sure the + on the speaker is connected to the + on the amplifier. There's usually a stripe on the cable to help you determine this.
Cause # 2
The eq settings on your ipod/ unit have been messed with.
Set all the equiliser settings to flat, then readjust them to taste.
Cause # 3 (nasty one)
You've blown a woofer. The explanation is this - the speakers have taken in too much power, the bass unit has got too hot and the glue holding the coil in place has melted. Usually, the woofer can't be physically pushed when this happens. To solve this, it's new speaker time. An alternative is to see if you can get a recone kit for said speaker, and try to fix the voicecoil yourself. This isn't recommended to those who are new to the idea.

I hope this helps the reader.
Chris

on Jan 08, 2010 | Sony LBT-ZX6 Shelf System

2 Answers

Hi Thanks for your help, One year old Sony mini


sir i think ypur unit is ok and run correctly... try to check your speaker maybe your speaker got open or burnt... you can test it by swapping your speaker to another unit or you can test your speaker using multitester...just point your selector at resistance test a speaker has 8ohms reading....


the speaker has a two terminal.. a positive terminal and a negative terminal... your multitester has a two lead.. red lead which is a positive and a black lead which is negative..
measure-speaker-impedance-1.1-800x800.jpg Multimeter probe sockets (NL Graphics) Insert the probes of a digital multimeter in the correct sockets of the multimeter. There may be several different sockets for the probes depending on what parameters you're measuring. Look for the sockets marked "impedance" or displaying the ohm symbol. Different models and brands of multimeters will vary in their labeling, so check your multimeter's manual if you're not certain about which one to use.

  • 2 Select the range for the multimeter. Since you'll be measuring fairly low resistance levels with a speaker, choose a range that will encompass readings in the 2-16 ohm range. It's extremely rare to find speakers that will have an impedance outside of that range.
  • 3 Touch one probe to each of the speaker terminals and check the reading. This will be the impedance of the speaker. Record the measurement, and when you're done, turn off the multimeter to preserve the batteries for the next time you need the multimeter.

  • Read more: How to Measure Speaker Impedance ' eHow.com http://www.ehow.com/how_5068180_measure-speaker-impedance.html#ixzz1OsNOPSq3
    if you think this help please rate me thanks...

    Jun 10, 2011 | Sony CMT-HPZ9 Shelf System

    1 Answer

    I wired a set of mission 700 speakers to a tecnics hifi and now it wont come off stand by what could be wrong.


    The way you say "a" Technics hifi implies the SCEH790 might not be the model.

    Whenever you DO something and a malfunction appears, UNDO it to get back to square one.

    UNwire the speakers and see how that works out. OR you shorted the speaker wires.

    May 30, 2011 | Technics SCEH790 CD Shelf System

    1 Answer

    Hi i have a set of 203 JPW floor standing hifi


    remove grill and approximately 6 to 8 screws hold speaker to box. Follow appropiate wiring in removal as replacement. Check crossover while you have it appart

    Mar 08, 2010 | Sony MHC-RV888D Shelf System

    1 Answer

    How to connect MHC-RG222 speakers to my pc


    If you have an output function at the back of your mini HIFI then surely you can.What you need is a Dual RCA [from the mini HIFI] to 3.5 mm Stereo Jack [to the PC]. The cable is easily available in the market...go to this site n you'll get the idea http://www.vpi.us/cable-audio.html

    Jun 17, 2009 | Sony MHC-RG222 CD Shelf System

    1 Answer

    Pushed power protect


    speaker protection turned on.it can be happend because of bad power amlifire section.can you remoove the powe ramp board with large heatsink.its very easy to repair.and i can help.
    nuwan

    Jan 09, 2009 | Sony Multi-System Mini Hifi Systems / DVD...

    1 Answer

    Aiwa xrm98 hifi need the remote model number for this hifi


    I think your remote's part number would be RCZAT04 and you can get the current substitute from HERE.

    Hope that fixed Ya...

    Geno

    Mar 28, 2008 | Audio Shelf Systems

    1 Answer

    JVC MX-J900 CD-RW


    just connect the hifi to the player of your cd rw disc and put the speaker output.check it out.

    Feb 19, 2008 | Audio Shelf Systems

    1 Answer

    Problem with my MX Gt 88!!


    use the speakers it came with it works fine for me i have mine hooked up to a 300w inverter anything less i dont get the best sound you cant turn the volume up too loud on the reciever it will draw too much power and shut it off or blow the fuse in you car unless the inverter you are using has an external fuse on it my inverter warns me that i am drawing to much power so when i hear the beep i turn it down a notch and works fine but ya try using the speakers th system came with

    Nov 02, 2007 | JVC MX-GT88 CD Shelf System

    Not finding what you are looking for?
    Audio Shelf Systems Logo

    Related Topics:

    244 people viewed this question

    Ask a Question

    Usually answered in minutes!

    Top Vintage Audio Shelf Systems Experts

    phil

    Level 2 Expert

    567 Answers

    Dave Jukebox

    Level 2 Expert

    211 Answers

    Colin Stickland
    Colin Stickland

    Level 3 Expert

    21949 Answers

    Are you a Vintage Audio Shelf System Expert? Answer questions, earn points and help others

    Answer questions

    Manuals & User Guides

    Loading...