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DT-99
The Monacor DT-99 is a good value replacement for old 100mm tweeters such as the Audax HD100 series, Peerless DT-100 and LR-10-DT, as found in many 1970s/80s designs.
The DT 99 has an excellent radiation pattern with a smooth rising response curve and offers a level of performance that is is unparalleled at this price point.
Resonant frequency (fs) | 1500 Hz | Nominal impedance (Zn) | 8 Ω |
Effective diaphragm diameter | 25mm | DC resistance (Re) | 5.7 Ω |
Ferrofluid ? Y/N | Yes |
Max power handling | 80 W |
Recommended crossover | 2.5kHz/12dB | Faceplate diameter | 100 mm |
Sensitivity (2.83V/1m) | 93 dB | Cutout hole diameter | 70 mm |
Bought these tweeters for an upgrade project .. Wharfdale Denton XP2's .. what a transformation from the originals ..
Super service from Willy's .. delivered on time ! Good value tweeter this ..
Will play now a bit with crossover to make the speakers a little less bright ..
Thanks for the review James!
Will & Caroline
Be aware this may physically replace the DH100T ( 811815) and many other 100mm face plate tweeters but there the similarities stop. Electrically and acoustically they are worlds apart from the early Peerless offerings . The DT99 has a rising frequency from 3K up to 20K to a mind boggling 96 db . It is a 92db driver but at 3k so be warned if a direct swop for a DH100 is envisaged . A few tweaks to the cross over, mine at 3500hz ( at 12db/ octave ) , plus a gargantuan lpad of 5/ 10 ohm and measurement wise it all fell into place . Measurement wise its not too bad . Listening wise ,no smearing and captures trailing cymbols / highs nicely . The manufacturers FR is a bit choppy but baffled up it measures not to bad apart from the slight drop of 2db at 5k plus ish . This drop is not too wide and could you hear it ... I doubt it . Off axis ( which the manufacturer isnt keen on showing ) again is pretty good up to 45 degrees . it nose dives after that at 7 K plus . ) Perfect it aint . but at this money ..?.May be really well suited to a 2 way BBC smiley face FR monitor than 3 ways IMHO. Listening wise could you tell the difference , if unamended in the cross over definitely . Corrected ,,, the jury is out . Great value though and well put together . Thanks Will for pulling the stops out on this and continued top grade service .
Thankyou for your review !
Will & Caroline
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I always knew that Linn should never have stopped using Hiquphon tweeters. What I don't know is why it's taken me thirty years to fit a pair in my old Kabers. It's often hard to describe sonic character ....but to pinch Linn's old line from back in the day ...they're Simply Better.(even straight out the box with soldering iron still warm)
As my Kabers are passive,I had been a little concerned that the the 8 ohm nominal impedence of the OW1 would mess with the crossover slope. I needn't have worried....if its shifted the crossover point its much for the better.
Warm thanks also to Will and Caroline for a service in keeping with the outstanding quality of the Hiquphon product.
Alan
Been looking for a supplier of replacement drivers for some years.
Willy's HiFi had just the parts at a good price and they arrived in a couple of days.
Excellent service. Even a personal thank you hand written on the invoice.
A quick delivery and the tweeters are perfect on my mission 753 freedom speakers. Easy to fit . Highly recommend.
I’m no expert when it comes to speakers, but after some research (and a strong recommendation from ChatGPT), I went with the SB Acoustics SB65WBAC25-4 as a reference full-range speaker in this size range.
Having now tested them, I can confidently say they’re probably the best speakers I’ve ever owned. The clarity is outstanding—every detail comes through with incredible precision. The bass is surprisingly full and punchy for a speaker this size, and they handle power impressively well. For anyone looking for a high-performance compact full-range driver, these are hard to beat.