All systems go !
All systems go !
DRIVE UNITS BY MANUFACTURER:
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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Excellent driver and superb service and advice from Willy's hi-fi. Would certainly recommend and I will definitely be using again. Super fast delivery and great prices
They offer great advice genuinely helpful and knowledgeable.
Excellent service.
Very happy with this replacement part, especially once id fitted it correctly!! Sounds great so know where to go when the other one fails. 👍
Just as expected. Works perfectly as a subwoofer @400Hz in a mono bi-amped active internet radio set up in my study. Thanks!
Bought a pair of these to replace the failing drivers in my 20 year old Alesis M1 Active Mk2s. They are physically a near perfect match for the cabinets and are a good match electrically for the amplifier, but sound better than the original drivers. The only slight complication is the original drivers use one 2.8mm and one 4.8mm spade terminal, so you need to change one of the connectors. These have given my old monitors (now my 'kitchen speakers') a whole new lease of life. Next step is to replace the rubber surrounds with a grille.
There is a detailed review of these drivers over on youtube: https://www.youtube.com/watch?v=NCb-rzCSK2s
Great service from Willys. They were dispatched straight away and arrived next day, very well packed.
I recently installed the Linn Keilidh active Tweeter Upgrade Kits from Willys Hifi. It works great! It took
1 month to get here snd had to pay an additional 90 euros in taxes and customs fees but it was well worth it!