Definitive Tech Owner's Thread

[Sonnie]

I'd be interested in seeing a response sweep graphed on these. I know they will probably play down to 17hz but at what kind of output... especially when you have them out in the room and not corner loaded.

I haven't heard them but I have often heard good things about them overall. I have a friend who owned their sub for a while and he was extremely impressed... for whatever reasons he now owns a Velodyne CHT-15.

[khellandros66]

I don't have a means to yet, I will once I gots the money for a DEQ2496 and all that shanangins that you need for it.

Below 17Hz it slopes off about -30dB. Brian Bunge and I figure it has a subsonic filter. The driver is an 8in Vifa (not sold to comsumers) that has an initial Fs of 25Hz and 350w RMS/750w Peak. Considering it has two passive radiators and an PEQ precalibrated and built into the amp it can achieve the listed FS.

I measured one at 20hz at 93dB and both towers at 95dB. At 17Hz I get 88-90dB depending one or two towers in use. 15Hz is well down at 62dB range. This leads me to believe that Definitive lists -6dB ratings which I have seen others like Paradigm and B&W do.

BTW: This was done with WinISD Test Tone Generator and RS Digital Meter "C Weighted" "Fast"

~Bob

[Adz]

My passion for Definitive Technology started over 13 years ago when I bought my first pair of BP10s from upscale The Listening Room in Scarsdale, NY. I still have those tower speakers in my living room today. Then I purchased the BP2000TLs, and swapped those out for my beloved BP7000SCs which I currently show in my showroom along with the CLR3000 and four BPVX bi-polar surrounds.

I am a HT enthusiast first, & a custom installer/dealer second and nothing yet has sounded better in my room or else it would be there instead of my seven Def Tech speakers with their 26 6.5" drivers and 13 1" tweeters producing simply awesome immersive surround sound.

I am probably one of those posters who passionately stresses maching Def Tech driver size "all-around". When it comes to home theater, the real treasure in the Def Tech line are in its Bi-polar surrounds (BPVX/P, BPVX, BPX, BP2X, BP1.2X). The key is to mount these surrounds high up on the wall about 2-3 feet above the listener as this adds a sense of spaciousness and extends the front soundstage outward and around the listener. A huge front soundstage using their towers and then up to 4 matching bi-polar surrounds is the most immersive home theater experience I have ever listened to.

[Adz]

A couple of interesting Def Tech installs - first one I just completed. Another one starting in January.


In historic Williamsburg (Brooklyn) NY. I was in a pretty sweet $1MM+ apartment replete with walls of glass overlooking the East River/Lower Manhattan Skyline installing Def Tech 7002s, CLR2500 powered center, BPX surrounds, Supercube and a Denon 4306. For TV, my customer decided to go with a 46" Bravia 1080p LCD (note: we do not carry Sony), and the picture was stunning. It did Digital non-HD cable very well but HD cable as well as DVD (upcoverted through a Samsung DVD player) was spectacular. Bi-polar sound works very well in those high City apartments -- Great Acoustics in his vaulted livingroom -- the Def Techs really rocked in this set-up.

In this upcoming job in which I'm still finalizing the specs, I'll be wall mounting the Sharp 57" LC D90U 1080p LCD along with 6x Mythos Eight speakers (3 for the fronts and 3 for the surrounds) with a Supercube Reference up front. The Mythos Eight has Two 5 1/4" bass/mid drivers, two 5 1/4" pressure-driven bass radiators, & one 1" pure aluminum dome tweeter. I know it will sound unbelieveably amazing and I love the idea of using identical 8's all around espeically matching the center. Although rated down to 38Hz, I plan to use one crossover at 80 Hz and let the SC Reference handle all the bass below 80 Hz. Also going in is a BDI Avion Noir with either an Arcam AVR 350 (or Cambridge 640R) powering the Mythos set-up. Everything routed into a Shunyata power conditioner (type still TBD). I'll be sure to take pictures and post them.

[Jack N]

Adz, Soundwise, how do the Mythos compare to the original style BPs ? Obviously they don't have the soundstage, but I've heard they come up a little short on bass.

[Adz]

Dain Bramaged wrote:

Adz, Soundwise, how do the Mythos compare to the original style BPs ? Obviously they don't have the soundstage, but I've heard they come up a little short on bass.

Hi Dain-B,

This is my opinion and experience in comparing those two lines.

I have the original BP10s in my living room. They were my first pair of Def Techs that I bought in the early 90's. Still have them and still love'em for casual listening. I wouldn't put the Mythos in that set-up but likewise I wouldn't put the BP10s to the left and right of my Plasma/LCD either. As is their M.O., the BP10s really do deliver extraordinary bass given the driver config and cabinet size. For 2 channel listening which is whatI recommend them for, you definitely do not need a sub. OTOH, and some will disagree, I do believe the Mythos need a sub to complement their multiple driver configuration in that sized cabinet. But If you're looking for that sleek look to match with a Plasma or LCD, but retain that signature Def Tech wall of sound for true home theater surround sound immersion, I personally haven't demo'ed anything that sounds better (at its price points) than the Mythos.

By the way, Def Tech just announced at CES, a completely new Mythos speaker, the "ST" which focused on improving the low end and they also upgraded the Gem surrounds with the new Gem XLs. You can read here:

http://www.tektruth.com/moxie/news/newprod/ces-2007-definitive-unvei.shtml

[Jack N]

Thanks for the info.

I think DT went over the edge this time in their claims for their new tower. I seriously doubt the frequency response, and the performance that they claim. Hence I think it's way over priced. Although I like the sound that DTs deliver, I've found that their frequency response specs aren't always truthful.

[Adz]

We'll see. They believe they have a big winner here and a major breakthrough in speaker design/performance.

If you check out AVS, there were some CES attendees (consumers, not Def Tech affiliateS) who are reporting that the ST's are the real deal.

I'm taking pre-orders now and the first ones to hit my showroom, I will compare to my 7000SC and report back.

[Adz]

I installed my first pair of the Mythos STs yesterday. They are beautiful looking and a lot bigger than the Mythos One. I definitely recommend black over silver. The black makes a statement around a black encased Plasma or LCD. They feature a new tweeter and subwoofer design by Def Tech. The first thing you notice about them is the incredible tight bass these speakers pump out. They deliver full range and I'm thinking could easily keep up with the 7002 and maybe the 7001 line which means these are a great choice for around that wall hanging Plasma or LCD. Unfortunately, I didnt get to hear too much material but they do deliver that awesome Def Tech signature soundstage - the huge wall of sound was there which I could never get from the Mythos line before.

[goatfarm]

My impressions about DefTech specs goes back many years. I use an old PF 1500 sub that they claimed was good to 13Hz in their ads. A friend has a PF 1800 which they claimed was good to 10Hz!!! I believe their claims are probably valid if one accepts down 10dB instead of the normal 3dB. Also they never ever list THD or at what volume level their subs will produce this frequency. With a BFD I've been able to coax 18Hz at 80dB out of my 1500. I don't have the equipment to run distortion tests.

I'd gladly trade mine for an SVS 16-46 (I do like pipe organ).

Greg