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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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Up and running again exactly what I needed. Great job Willys. 10/10👊🏻🫵🏻. From start to finish will be use again in near future for crossover upgrade. 1st time using. 100% will use again
Since 1991, I've had Linn Keilidh speakers, which I upgraded a year later to an active system using the Linn Wakonda and two LK100 power amplifiers. Over the past few years, I’ve considered replacing my audio setup with a more compact active system. However, the downside is that it would require a significant investment to achieve a comparable sound quality.
In the end, I opted for an upgrade of the tweeters and new speaker covers after more than 30 years.
The upgrade itself went smoothly using the supplied solder. I’m very pleased with the end result. The upgrade has had a noticeable impact on the soundstage: the bass, midrange and treble all have more space and clarity within the stereo image. This first became apparent to me when listening to vocals—it’s as if you can perceive the space surrounding the voice. And the longer you listen, the more this spatial detail stands out.
I’ve turned the amplifier up slightly, as creating that sense of space seems to require a bit more power.
It’s an upgrade I can definitely recommend.
Wow, just had my Mission 753 upgrades of crossover and also tweeters. What a difference it’s made! The high frequencies are more refined and OMG, the separation and richness of mud and bass if awesome…..much thanks to Willy’s for giving my 753’s a new life 😀😀
Excellent advice from will as usual and exactly what I wanted. These have improved the sound of my current speakers and taken them to another level. Sounds superb I can hear tonal difference's between things that I never heard before. Superb bass drivers dig so deep.
As usual will has been outstanding.
Brilliant to deal with always helpful and gives great service.
What a brilliant capacitor, from first listen exceptional clarity and depth. Bargain will be buying more.