Definitive Tech Owner's Thread

**khellandros66** · **06-08-06, 01:25 PM**

Hey all you Deftechies out there!!! This is the section to hang out and ask related questions about Definitive Technology Speakers.

~Bob

**khellandros66** · **06-08-06, 03:34 PM**

I am gonna kick start the apocolypse here and post some pics of my system.

~Bob

**Otto** · **06-08-06, 05:35 PM**

I thought that name was familiar from AVS. Here's a link to my "hello" page here at the Shack. I'm going to take some better ones for the other pages sometime, but not today...

http://www.hometheatershack.com/foru...-hi-there.html

I definitely enjoy my DTs!

-- Otto

**Exocer** · **06-08-06, 06:59 PM**

Awesome speakers, I like I like...just how many drivers are there in that tall speaker?

**khellandros66** · **06-09-06, 11:28 PM**

Well the BP7006's I have use the followingp;

Two 4-1/2" high definition cast-magnesium basket polymer upper bass/midrange drivers.

Two 1" pure aluminum dome tweeters with silk surrounds.

One 8" long-throw subwoofer coupled to two 8" infrasonic radiators. Powered by a 300w RMS Digital Amp.

Freq. Response: 17 Hz — 30 kHz
Rec. Assoc. Amp.: 20 — 250 Watts/channel

The internal x-over is set to crossover the upper section at 120Hz so anything below that is automatically taken care of by the internal subwoofer.

~Bob

**mikegh** · **06-17-06, 10:44 PM**

I heard the 7006's when I was in magnolia a while back, nice speakers. I've always liked def tech's.

Mike

**GregBe** · **06-19-06, 05:15 PM**

I have always liked the way Def Techs sound. I think they really do themselves a disservice by over inflating their specs (speakers and subs low end). Because of this, they really get slammed on a lot of the other forums, by many people that have never even heard them before. Those that own them are usually really happy with them.

**Exocer** · **06-20-06, 05:30 PM**

Woah, output down to 17hz? Do you even need a sub?

Edit: Just read the above post, I figured 17hz was a bit optimistic. Not that it takes away anything from the speaker's sound... At a Best Buy I heard a pair of Def Tech towers for the first time playing King Kong, It sounded really good.

**FlashJim** · **06-20-06, 05:42 PM**

I lead a sheltered life. I've never heard of them until I opened this thread. I'll have to do some research.

Nice looking speakers, Bob.

**khellandros66** · **06-22-06, 09:49 PM**

FlashJim you will be in for a wild ride

~Bob

**Sonnie** · **06-22-06, 11:49 PM**

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** · **06-23-06, 01:59 AM**

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** · **11-21-06, 09:06 PM**

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** · **12-26-06, 05:35 PM**

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** · **01-18-07, 08:59 PM**

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** · **01-20-07, 07:21 AM**

Quote:

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/n...ve-unvei.shtml

**Jack N** · **01-20-07, 08:19 AM**

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** · **01-20-07, 08:47 AM**

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** · **04-01-07, 08:12 AM**

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** · **04-02-07, 05:41 PM**

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

**khellandros66** · **04-04-07, 01:46 PM**

The newer subs are all -10dB, and because of the Passive radiator desing a filter is used to reduce SPL so that thermal peak and xmax are not over run.

For instance the BP7006 are rated to 17hz, they are more then likely tuned to 25hz like most other passive/ported designs. They more then likley get near xmax at 17hz so they anticipate issues and use a filter of -10dB per octave below the tuned Fs (25hz).

~Bobby

**Brian Bunge** · **04-13-07, 11:20 PM**

If the driver has an Fs of 25Hz and the PR's are tuned to 25Hz then that will go a long way to help limit overexcursion of the driver below Fs. That should give you a system that falls off at 24dB/octave (4th order). If they also use a subsonic filter it's probably a 2nd order (12dB/octave) filter to further reduce output down low.

**04-16-07, 11:27 PM**

Has anyone found real numbers for the reference sub from DT? I have recently purhased, not installed and I am curious of what I can expect. I would like to see real data of these subs. I am posting in DT section as I might be more likely to get an answer.

**khellandros66** · **04-18-07, 06:36 PM**

#1 Try it for a few days see what you thnk of it.

#2 If you like it, enjoy it and don't let what others say effect your feelings of the decision

#3 I like it a lot better then the SC I, II, and III which I think are bloated specs. They are good but for the money DIY is adirection I'd take before I'd get any of these...

~Bobby

**01-29-08, 04:46 PM**

Hey everyone,
Just joined the forum. I don't own any DefTech products yet but I've been listening to the BP7002 and BP7004 and may buy a set soon. I joined the forum so I could hopefully reap the benefits of your knowledge and experience with these products.

I listen to a lot of contemp and classic jazz, but still throw on some Led Zep now and then. I still have a large collection of rather old first release LPs that I occasionally listen to in two channel mode. That being said, my prime concern is to first get a really good set of full range floor standing fronts (max $2000 price range), and add matching surrounds later. I've listened to quite a few brands, some that are considered more "audiophile," such as Canton, Vienna Acoustics, Mirage, Martin Logan, and although I can point to areas where some of these sound better than the DefTechs, one can't deny the openness and soundstage of a bipolar design.

So the questions are:
Do you feel you gave up a little sound quality in order to get the bipolar design?
Are owners of the BP7002/BP7004/BP7006 happy with them?
Any and all thoughts are appreciated.

Side note:

Quote:

khellandros66 wrote:

The internal x-over is set to crossover the upper section at 120Hz so anything below that is automatically taken care of by the internal subwoofer.

I just got an email from DefTech and they said the crossover on all 3 models (7002/7004/7006) is 80hz for info coming from speaker wires thru crossover. However, the crossover is bypassed for LFE input. So if you have AV processor LFE connected and set to (ie) 100hz, the sub would get 80hz and down from speaker connection, but would get up to 100hz from LFE. In other words, for LFE the sub will bypass the crossover network and get whatever your LFE setting is in your AV processor setup.

Is the guy from DefTech wrong?
Does someone have something in writing that says 120hz?

Thanks for all your help.

Dave

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