Question about KLH 1230SB Main / Stereo Speaker

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Tweeters & Midrange Speakers

I have a pair of 3 way speakers. The tweeters and midrange speakers stopped working after playing at a reasonably high volume. The bass speakers still work in both speakers. The sound is now muffled because I only have sound coming through the bass speakers. Did something blow out in the receiver?

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If you have a Ohm Meter, check the resistance to the speakers. If it is very high, the speakers are burned, (or the crossover is (just capacitors, and resisters...cheap)). If it is close to 4 ohms check the wiring and connectors..to and at the speakers, most likly the receiver/amp is not blown.

Posted on Apr 20, 2008

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What is the impedance of the midrange speaker and the tweeter speaker in the Pioneer cs r5100 ? I have the crossovers and the woofers I use for my front channels (L&R)


If you are running three 8 ohm speakers in parallel then the total impedance would be 2.667. If running two 8 ohm and one 6 ohm speaker in parallel you would have 2.4 ohms. This will burn out your amp pretty quick. And very possible won't play at all. Though I have never attempted to play a home amp down that low in ohms. Guessing you may have an older model Denon type amp.

Aug 01, 2014 | Pioneer Speakers & Subwoofers

Tip

How To Bi-Amp And Bi-Wire Speakers!


What is the difference between bi-wiring and bi-amping?
Bi-wiring is using the same power source (amplifier) but separately connecting that power source to a woofer and a midrange/tweeter on a speaker.

Bi-amping is using two separate power sources (amplifiers) and connecting one amplifier to a woofer and the other amplifier to a midrange/tweeter on a speaker.

How do I bi-wire?
Your speaker must have two separate positive and negative connections (one set for the woofer and one set for the midrange/tweeter). Connect one wire between the positive terminal on the amplifier/receiver the positive terminal on the speaker. Connect the other wire from the negative terminal on the amplifier/receiver to the corresponding negative terminal on the speaker. Remove the jumper straps connecting the two sets of speaker inputs. Repeat this process for the second set of terminals on the speaker, connecting them to the same positive and negative terminals on the receiver/amplifier. Repeat the steps for each speaker you wish to Bi-Wire, connecting them to the appropriate terminals on your receiver/amplifier.

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How do I bi-amp?
Bi-amping is similar to bi-wiring, but involves separate amplifiers: one for the woofer and one for the midrange/tweeter. Passive bi-amping involves a direct hookup between each amplifier and the speaker terminals. True bi-amping involves hooking the preamp to an electronic crossover that replaces the passive crossover network in the speaker. The active crossover then connects to multiple power amplifiers.

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on Jul 13, 2010 | Speakers & Subwoofers

1 Answer

My speaker sounds muffled. Its alot of low end put not that much high. All my eqs are adjusted fine, and when i plug the same wire into my Mackie, NO PROBLEMS. It's definetly the speaker


well it sounds like you know what the problem is already, the first thing you need to determine is if the fuze is blown, jbl's are expensive speakers and usually there is an internal and sometime an external fuze, sometimes the midrange and tweeters are fuzed sepeataly. I'm ont familiar with that particular model, but if it not a fuze then most likely you have overloaded the high end speakers and they may have blown out, the high freqency drivers and not cheap and if they are new and under warranty you might have a chance to get new tweeters/horns free but if it is your fault e.g. too much power going in, then you will have to pay for them. You can get replacemdent JBL or other good speakers at www.martinsoundproducts.com they are out of Cleveland Ohio and you can call them when you get their number off the website..

Mar 20, 2011 | JBL PRX512M Speaker

2 Answers

Diamond 8.4 serie are there 2 way or 3 way


Hi,

These speakers are 3-way there are 2 woofers and 1 tweeter per speaker. Here are the technical specifications of each speaker:

Two 6.5-inch Kevlar woofers and 1-inch silk-dome tweeter per speaker
86 dB sensitivity
20 to 150 watts recommended power (per channel)
6 ohms impedance
30 to 20,000 Hz frequency response

Please rate my answer if this helps.

Many thanks,

Chris

Mar 02, 2011 | Wharfedale Diamond 8.4 Main / Stereo...

2 Answers

Tweeter not working


Check the continuity of the removed tweeter with a VOM meter (I use an original Heatkit MM-1 available on eBay for $20) and do the 1.5 volt battery click & scratch test mentioned above.

Celestion A3 tweeters (also used in the A1 and A2 speakers) or the replacement diaphragms are no longer available from Celestion. A1 speakers show up regularly on the United Kingdom eBay website for $300 or less and are small enough to economically ship to the USA. You would also end up with a midrange spare speaker (assuming it is the same as in the A3 cabinets)

The part number for the A series 3 bar tweeter is T4969/P. The 3 bars refers to the 3 bars in the casting to protect the dome. I got this number from the box of my spare tweeter I have the earlier 1 bar castings in my A3's.

Go to www.ersatzteil-versand.at do an "artikelsuche" (article search) for the number T4969/P and something extremeley similar shows up except that they list the manufacturer as Onkyo. The part number and description are so similar to what is printed on my spare tweeter box it would be worth 81 euros to see what shows up.
I have designed an adapter plate for either a Scan-Speak Revelator Tweeter D2904/710002 4 ohm, 1" soft dome, 70 mm diameter magnet, $220 or a Vifa D27TG35-06 6 ohms, 72 mm diameter magnet, 91 db, $37.50..Both are available from:
http://www.speakercity.com/ in Burbank, CA


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I only modeled the front flange of the tweeter to save time. I have not built any of these yet but the price would probably be $400 for a pair of adapter plates and speaker flange modifications. But when you are done you would have replaceable tweeter for a long time to come. The 2 protective bars are drawer handles available for $3 each.

Other possibilities are:
http://www.audioloudspeakers.co.uk/boultons.shtml voice coil rewinding in the uk

http://www.speaker-repairs.com.au/coils.htm voice coil rewinding in australia

http://www.speakerex.com/diaphragms_new.html in Florida can rebuild the woofer and replace the midrange but no longer have the 4 ohm diaphragm for the tweeter.

If you want the drawings (and 3D geometry file necessary for the machinist to make the curved edges) for the adapter plate and tweeter flange modification contact me at mercedes280se-4@yahoo.com

Feb 11, 2010 | Celestion A3 Speaker

1 Answer

Midrange and tweeter driver not hit the the high range.


Are u sure u haven't messed up with the polarity of the speakers while rewiring the speakers? If all is ok and only u find that the speakers are not so vibrant as the other there cud be a possibility that the coil has shifted inside the magnet and is either scratching or not aligned. Also hav a look at the crossover

Aug 26, 2009 | KEF Audio Q75 Speaker

1 Answer

Tweeters????


Hi oddone

You may have a problem with either blown tweeters, or a faulty cross over, or both. If you have a multimeter, you can remove the tweeter, and check it DC resistance. They normally have their impedance marked on the back of the magnet. If not, you can assume they should measure 8 ohms. If they measure open circuit (high resistance), then they have failed.
A good speaker repair guy can often fix an open circuit tweeter as they often break where the very fine wires attach from the voice coil to the terminal. you can take a turn of the voice coil and reterminate to solve this problem. If the voice coils are burnt, they will need to be replaced.
If the tweeter meters ok, then you may have a problem with the crossover capacitors going dry. Generally they are 2.2uf to 6.8uf in value, the smallest cap in the crossover. If the plastic coating on them is split, or they look a different colour to the rest of the caps, replace them, if they sound "hollow" replace em, if you are not sure, replace em. other than that there is not alot more to look for with a speaker box tweeter Good luck and happy listening.

If you have any dramas, get back to me here and we can talk more about it.

regards
Graeme

Mar 16, 2008 | Speakers & Subwoofers

1 Answer

Speakers sound quiet and unclear


You probably burned tweeters and damage midranges but before disasembly check equalizer

Feb 27, 2008 | Speakers & Subwoofers

1 Answer

KLH tweeters stopped working


hi, have u first disconnected the tweeters and then checked, as if its on a cross over, the tweeter is in series with a capacitor,if u have a ohms meter or a continuety tester check the tweeter coil if its open,secondly you can have the coil replaced, check if u can get one before buying a new,let me know

Jan 11, 2008 | KLH HT-9930 System

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