I have also heard them at Troels Place, and I was very happy with them. The are very dynamic and tweeter, midrange and woofers are very well integrated. the bas is exceptional transparent and resolved. They are great speakers.
Troels is using a 40W !! SET amp, with two 6C33 in parallel, in each channel.
Troels is using a 40W !! SET amp, with two 6C33 in parallel, in each channel.
I'm not very good at describing sound but I will try to do it.
What I like most about them is the midrange part. Integration between tweeter and midrange is superb. Voices and instruments coming out from this speakers sound very real. Bass is tight, fast and dry. They create a huge soundstage.
Basically the sound described by the people from builders response, I found to be true.
Regarding your last question, I wish I would have build the OBL-11 version, but the size of my room is too small for these type of speakers.
My system: TPA Buffalo DAC with Legato, Goldmund 27 clone preamp, Aleph 5 power amp.
True, I've build Borbely's 6C33C SE amp and got 15W from a single tube per channel.
sounds like a strange question. There are so many posts and threads about this design.
I built several, based on Fostex 103Sigma.
Now something no-one heard: a little story.
My sister got one of the pairs, and once in a while there were strange noises in the house, hard to place. Far away low echo's.
After much pondering I found out.
She has the strange habit to turn down the volume on her Yamaha Class A amplifier (some do that to keep the amp warm . . .), but not to zero.
The TQWT has a narrow peak with resonance, so if the level was turned down below what was hearable normally (on the radio) then every so often some music did get the TQWT into excitation.
That made the slight trumpet sounds 😱
I've built them (4x10") and they are my primary speaker. Attached is the pic before I mounted the drivers and buffed them down a bit.
I'm fairly new to the audiophile obsession and these were my first build. My overall impression is they are very smooth. They seem to be fairly tolerent of placement and amplifiication. It seems to be the one part of my system that I really enjoy. I demoed serveral speakers before I tried to build my own and compared to my demos I'm very happy. Where are you located 2muchRice?
I'm fairly new to the audiophile obsession and these were my first build. My overall impression is they are very smooth. They seem to be fairly tolerent of placement and amplifiication. It seems to be the one part of my system that I really enjoy. I demoed serveral speakers before I tried to build my own and compared to my demos I'm very happy. Where are you located 2muchRice?
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Forgot to tell you about the minuses that I've found on these speakers. Lack of sub frequencies (some freq. of church organ are attenuated).
If you are looking for bright sounding speakers like Triangle, you will not get that, but instead a life like sound.
Regards.
If you are looking for bright sounding speakers like Triangle, you will not get that, but instead a life like sound.
Regards.
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Hm, my t-tqwt subs are tuned down around 23 cycles, they're anything but gentle 😉
It all depends on the driver you use and the tuning.
What kind of drivers are you using? I plan on using the 12 Eminence DeltaLite II 2512 that he recommends.
I'm in Dallas, TX
What kind of drivers are you using? I plan on using the 12 Eminence DeltaLite II 2512 that he recommends.
I've build them with Eminence DeltaLite 2510, 10". Maybe with some room gain below 35Hz you can get better response on these frequencies. My room is not working on these frequencies unfortunately. Anyhow like most of the speakers there is a compromise. Here on the upper bass, drum kit sound so real.
I've build them with Eminence DeltaLite 2510, 10". Maybe with some room gain below 35Hz you can get better response on these frequencies. My room is not working on these frequencies unfortunately. Anyhow like most of the speakers there is a compromise. Here on the upper bass, drum kit sound so real.
I guess the company doesnt wants to sell any kits. Ive emailed them twice now with no response. [FONT=Verdana, Arial, Helvetica, sans-serif]contact@jantzen-audio.com I cant really call them cause they are in denmark :S
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In my room they are sitting now at 35 cm, but i've played with them as close as 20 cm(I have a small room 17 sqm), but I recommend this tweak :Tweak #2
Damping rear radiation from the Eminence bass drivers, in case you want to have them close to the wall.
The break in time depends on the way you do it.
Listening to music and wait for break in, it will take minimum 300hrs.
You can try also to feed to eminence drivers 20Hz, place them face to face, reverse polarity and keep them for at least 30-50 hrs.
Hi! I've built the Troels' DTQWTs and I can say that the JA8008 midrange (and mainly the human voices) takes at least 300/400 hours to get rid of an unwanted heaviness.
I actually counted the usage time by the means of the Squeezebox Touch music server. I'ts 300 hours for real. Now, the sound fantastic.
About the Eminence woofers, they take only 20-30 hours to start pumping great low frequencies. Before that, the DTQWTs sound like a transistor radio hidden under a pillow, so be patient !
Last night I had the visit of two "golden ears" friends. Both of them own a stereo set on the >70k $ range. Wilson Sasha, FM Acoustic, Basis-Graham-Lyra.. that kind of stuff, and come from a life of Quads, Ensemble, Magico, Spectral..
One of them is a La Scala aficionado since decades (we live near Milano).
So I was a bit afraid of their judgement on my new loudspeakers coming from my basement 🙂
I drive them with a Dussun V6i chinese SS amp, fed by a Squeezebox and occasionally by a Philips CD-880. Not exactly a top notch setup 🙂
Ok, the verdict was something like this:
"Definitely better than my former Magico's"
"Bass is fantastic, extremely good voices, transparency is almost electrostatic"
"Maybe the Sasha's are a bit more clear but, ok, look at that crappy Squeeze thing, what about driving them through a real audiophile set.."
Tonight I'm waiting for another guy who is carrying a Sun Audio 300B amplifier. Let's see how it performs..
About the efficiency. I'me used to listen at a pretty high level. Around 90db at the listening point, 2,5 meters from the speakers. The Dussun is rated for 150W/ch (more than overkill..). The volume pot stays at step 2, 2,5 out of ten. More than that, and the furniture start shaking. The room is about 25 sq/m.
bye. Carlo.
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