Buyout Special

1/2" Mylar Dome Shielded Tweeter 8 Ohm with 3.3 Ohm Resistor

Brand:| Model: 1-2TW-SD84
Save up to 65% off the original, discounted retail price on this 1/2" Mylar dome shielded tweeter through this Parts Express exclusive factory buyout. A bypassable 3.3 ohm padding resistor is included.
  • Low mass Mylar dome extends response
  • Phase correction faceplate also protects diaphragm
  • Includes bypassable 3.3Ω, 5 watt padding resistor
  • Magnetically shielded ceramic motor
  • 1/2" diameter dome for superior off-axis response
Part # 
Weight: 0.2000 lbs.  
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Product Details

1/2" Mylar Dome Shielded Tweeter 8 Ohm with 3.3 Ohm Resistor

This shielded tweeter is perfect for replacing tweeters in many classic speakers. The 1/2" diameter Mylar dome diaphragm offers superior off-axis response and is protected by the built-in phase correction on the faceplate. For greater power handling, and 3 dB of padding, a bypassable 3.3 ohm, 5 watt resistor is included.

Save up to 65% off the original discounted retail price through this Parts Express exclusive factory buyout. Act fast, quantities are limited!

Product Specifications
  • Tweeter TypePoly / Mylar Dome
  • Cone / Dome Diameter1/2"
  • Impedance8 ohms
  • Power Handling (RMS)30 Watts
  • Frequency Response4,000 to 20,000 Hz
  • Sensitivity88 dB 1W/1m
Thiele-Small Parameters
  • Resonant Frequency (Fs)2,500 Hz
  • DC Resistance (Re)9.30 ohms
Mounting Information
  • Overall Outside Diameter2.88"
  • Cutout Diameter1.88"
  • Depth1.25"
1/2" Mylar Dome Shielded Tweeter 8 Ohm with 3.3 Ohm Resistor
  • BrandFactory Buyouts
  • Model1-2TW-SD84
  • Part Number279-001
  • UPC848864012681
  • Product CategoryTweeters
  • Unit of MeasureEA
  • Product Rating
    (6 Reviews)
  • Weight0.2000 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Similar Products

View similar products to the 1/2" Mylar Dome Shielded Tweeter 8 Ohm with 3.3 Ohm Resistor
in the Tweeters product category.


1/2" Mylar Dome Shielded Tweeter 8 Ohm with 3.3 Ohm Resistor
1/2" Mylar Dome Shielded Tweeter 8 Ohm with 3.3 Ohm Resistor is rated 4.8333 out of 5 by 6.
Rated 5 out of 5 by from Can't go wrong for 99¢Fixed up some old Optimus sts-50's with these. Granted, I'm no audiophile (and, granted, they weren't the best speakers, anyway), but these certainly fixed them up. I'd been thinking about purchasing 6 of these for replacing the paper cone tweeters in my hodge-podge, thrift store, home theatre setup. The sts-50's were just a trial run. At this price, I think I might as well buy the 6 more.
Date published: 2014-07-31
Rated 5 out of 5 by from Great buyUsed two to repair a set of large bookshelf speakers with blown tweeters. I had to make mounting/backing out of hard masonite for a mount to cover old hole. They seemed to sound OK and fill in the highs. Should have bought a couple more to have on hand and saved some shipping costs.
Date published: 2014-07-11
Rated 5 out of 5 by from Surprisingly GoodI have a pair of Sony speakers (SS-B-1000) that I was given as a gift. The stock model sounded very odd. Vocals were recessed, the midrange was lacking which was strange from a small 'bargain' bookeshelf speaker. I read a few reviews on the web which show the stock cap crosses over the tweeter way too high, creating a gap in the midrange.I ordered a pair of these tweets, and a pair of 3.3mfd caps. Installed them today and the result is very nice. I kept the pad resistor in place, otherwise it was not matched to the other driver.No cabinet mods needed, it dropped directly into the Sony cabinet. If you try this and it doesn't quite fit, turn it 1/3 of a turn and it will drop in. The screw holes line up and it is a simple mod that is quick to do.Cures the mid-range issue and adds a nice top end. I was on the edge of giving the speakers away, but now I like them.Thanks Parts Express! It is amazing the stuff you sell for 99 cents!
Date published: 2014-05-18
Rated 5 out of 5 by from Nice little tweeter.......Just what I needed to replace an older tweeter from a pair of 3-way pioneer's..
Date published: 2014-05-16
Rated 4 out of 5 by from for $1.00bought 6 tested one w/4.7 uf cap bypassing padding resistor puts out very good response use of 2 per speaker would be better maybe even remove blocker protector piece in front of mylar dome . . At 1.00 ea it's a steal
Date published: 2014-04-25
Rated 5 out of 5 by from GREAT SOUND!Bought these to rebuild some old horn tweeter that sounded terrible.Popped off the the backes of the old horns, and cut off the rear bowl.Then I took off the circular expanding ring on these thats that gives them a larger OD and super glued them one! sound 10x better. Really a great sounding tweeter.I have a 4.7uf Dayton film cap on there.
Date published: 2014-01-02

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email  for a prompt reply.
1/2" Mylar Dome Shielded Tweeter 8 Ohm with 3.3 Ohm Resistor

Would this be a suitable replacement for an infinity HTS-10 Satellite speaker?

Asked by: Asbot
Unfortunately we do not have a cross reference available for this type of thing. Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-07-21

I want add this tweeter to an existing 8 ohm woofer, and an amp that is approx. 20 watts per. Would that require a crossover, or just the 3.3 ohm resistor, and how would it be wired?

Asked by: Mooncalf
You will want to use a high pass filter of some kind with this, but the crossover frequency will have to be determined by the woofers frequency response. I would suggest nothing lower than 6,500 Hz second order with this tweeter. The resistor can be used if the tweeter is too bright, or can be bypassed if not.
Answered by: MattP
Date published: 2014-07-18

Does the SPL rating of 88 dB/watt/meter include the resistor's padding effect?

Asked by: Clarkia
Yes this is with the resistor in place.
Answered by: MattP
Date published: 2014-04-21

What is the distance between the holes ?

Asked by: molecules
The distance between screw holes is 2".
Answered by: MattP
Date published: 2014-02-10

What size cutout do they require?

Asked by: aronc
These require a 1-7/8" diameter cutout.
Answered by: MattP
Date published: 2014-04-21

Is the 30 watt continuous rating the tested or rated power handling?

Were these tweeters tested to verify that they can actually handle 30 watts continuously with a 5kHz crossover? Thanks!
Asked by: Robocam
This is likely a rated power handling. Being a buyout item we have very limited information from the manufacturer.
Answered by: MattP
Date published: 2014-04-27

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