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HiVi TN25 Fabric Dome Tweeter

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HiVi TN25 Fabric Dome Tweeter

Brand:|Model: TN25|Part # 297-408
HiVi combines a hand treated 1" fabric dome, large non-resonant rear acoustic chamber, and a Ferrofluid cooled voice coil together in the TN25, creating a high performance tweeter with small faceplate for close driver placement.
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Part # 297-408
  • Inherently shielded neo motor
  • Fabric dome for a smooth, natural sound
  • Large acoustic chamber reduces Fs for low crossover points

Product Details

HiVi TN25 Fabric Dome Tweeter

HiVi combines a hand treated 1" fabric dome, large non-resonant rear acoustic chamber, and a Ferrofluid cooled voice coil together in the TN25, creating a high performance tweeter with small faceplate for close driver placement. Self-shielded neodymium motor protects sensitive electronics will focusing the magnetic flux in the gap.

Product Specifications
  • Tweeter TypeSoft Dome
  • Cone / Dome Diameter1"
  • Impedance5 ohms
  • Power Handling (RMS)20 Watts
  • Frequency Response2,500 to 22,000 Hz
  • Sensitivity89 dB 1W/1m
Thiele-Small Parameters
  • Resonant Frequency (Fs)1,500 Hz
  • DC Resistance (Re)4.60 ohms
Mounting Information
  • Overall Outside Diameter2.13" x 2.13"
  • Cutout Diameter1.69"
  • Depth2.50"
HiVi TN25 Fabric Dome Tweeter
  • BrandHiVi
  • ModelTN25
  • Part Number297-408
  • UPC844632021794
  • Product CategoryTweeters
  • Unit of MeasureEA
  • Product Rating
    (20 Reviews)
  • Weight1 lbs.
  • California Prop 65

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

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HiVi TN25 Fabric Dome Tweeter
HiVi TN25 Fabric Dome Tweeter is rated 4.75 out of 5 by 20.
Rated 5 out of 5 by from High Quality on a BudgetUsed a pair of these in a vented MTM tower design in conjunction with 4 HiVi B3N's. Similar design to a prominent Japanese manufacturer's MTM tower of about 44" in height... but for about $140 for the entire project including the paint instead of $600 for the pair.Fantastic little tweeters. Nice and clear all the way past what I can hear (which is still up to about 17.2KHz... not bad for an old guy). Detailed but not harsh. This pair of towers ended up in my parents' new home in TX and they couldn't be happier. I put them through their paces with a few of my usual test tracks (Yello, Lady Gaga, Bela Fleck, Rodrigo y Gabriela) and they came through with flying colors. I decided to throw the worst thing I could find at them... Bogoroditse Devo from Rachmaninov's Vespers. (dense choral writing, huge dynamic contrast, and loud Russian baritones) I've heard a handful of speakers that don't shred the end of this track, and this is one such pair.At $14, these are absolutely worth the investment. A word of caution: Best to wire up your leads to these BEFORE mounting to your baffle. The connectors are pretty short, so getting a quick-connect or a soldering tip into the gap can be tricky. And as with any tweeter, choosing the crossover point makes a big difference. I used a pair of Dayton 2-ways that were from an odd batch and had funny specs. X-over is at 2.5K, which is a little lower than I'd like for these, but in this application I got away with it. 3.0K or 3.5K would probably be even better.TL:DR - Competes against MUCH pricier options. Worth it.
Date published: 2015-09-24
Rated 5 out of 5 by from High ValueBought five of these for temporary replacement of Morel mdt 44 when a voice coil burns out. These HI VI's don't sound as good as the Morel's but at about 1/10 the cost of the Morel's they deliver a good 50% of the performance.
Date published: 2014-05-09
Rated 5 out of 5 by from Mellow, clean sound with a small mounting diameterPE was having a special on these at the same time that I got an itch to build a pair of bookshelf speakers, so I picked up a pair along with two Dayton RS125-8 5-inch Reference woofers.A custom Linkwitz-Riley crossover at 5kHz is significantly above the minimum that these can tolerate, but even so, the high-end output from these units is extremely clean and mellow. I can listen to them all evening without getting fatigued, and the off-axis response is adequate for my use as nearfield monitors on an office cubicle desk.The 89dB rated response is a fairly good match for many smaller woofers, although I did L-pad them for a better match to my 85dB-rated woofer. Also, the relatively small diameter of the rear chamber means the baffle can be cut with a hole saw, rather than requiring special work with the jigsaw or plunge router.I would definitely consider these again for another bookshelf speaker project.
Date published: 2013-08-29
Rated 5 out of 5 by from Amazing Tweeter For The Price!!Pros. - Clean, Natural sounding easy to listen to. Also handles high volumes well. Fantastic tweeter I have 3 sets of them in different builds and love them all.Cons. - Small faceplate makes mounting a bit more difficult. "Measure twice cut once as they say."X-Over Pros preloaded specs for this speaker as of Dec 31 2000.Fs=1500, Qms=2.201, Cms=0.0184 in/lb, Mms=0.00381 oz, Rms=1.016lb/s, P-Dia=.984 in, Sd=.761, Qes=5.33, Re=4.6 ohms, Le=.0388 mH, Z=5 ohms, BL=.21 lb/A, Pe=20 watts, Qts=1.558, 1-W SPL=85.6 dB, 2.83-V SPL=88 dBHope these specs help!!
Date published: 2013-04-03
Rated 5 out of 5 by from SmoothFor the price this is an excellent tweeter. A clean sweet sound equal to drivers 2 or 3 the cost.
Date published: 2013-02-20
Rated 5 out of 5 by from Fit My Needs & sounded good!I bought two of these based on favorable reviews and electrical/acoustic parameters. I have a mediocre pair of old aftermarket Sony 4 ohm 6x9" speakers on the rear deck my car. My plan was to disconnect the crummy mylar tweeters and mount the new HiVis next to the existing speakers on the deck. I used 14.7uF of capacitance each and protected them from direct sunlight with speaker cloth stretched over a flange I manufactured for them that recesses the tweeter slightly so the fabric does not come into contact with the dome. After connection, voila! Worked perfectly, voicing transitioned well with the adequate bass of the Sonys and efficiency matched nicely as well. The Sonys didn't have a true crossover as apparently the manufacturer just used the natural roll-off of the woofers, so my solution, (around 2,200Hz 1st-order x-over), worked just fine! Previous comments concerning transparency and detail were accurate. I am pleased.
Date published: 2012-04-22
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Product Q&A

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HiVi TN25 Fabric Dome Tweeter

Is the faceplate on these made of plastic or metal? Hard to tell from the pic.

Asked by: drufus
The face plate on this is plastic.
Answered by: MattP
Date published: 2015-10-06

Looking to build a pair of 3-ways using this tweeter, the hivi 4" mid (297-434), and 8" woofer (297-446).  Just wondering if they will play well together and if there's an ideal crossover PE sells that will work with this.

Asked by: Aaron2477
Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-12-31

Crossover question.

If I'm using the HiVi TN25 and a HiVi M4N 4" Aluminum/Magnesium Midbass in a small boombox, about the size of a lunch box, is a crossover recommended? Thx.
Asked by: Reelz
very much so! A crossover is required to keep the bass frequencies from destroying the tweeter. With a 4 in driver you can get away with a higher crossover point, I would guess that a crossover point of around 3000-3500 hz with 2nd order filters would do nicely. But it would be best to model the drivers and create a custom crossover with Jeff B's spreadsheets or a similar modeler. Good luck!
Answered by: GingerDude
Date published: 2012-07-31
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