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The Official Quested LT Series Thread

post #1 of 19
Thread Starter 
As many will know I have been on a Quest to recreate the ultimate Holosonic experience without fatigue and at high spl levels. While for a decade i traded in B&W, Meridian, McIntosh and everything else in between fro Dynaudio Esotar based systems, these proved to be reliable workhorses in the era of compressed soundtracks. The appearance of uncompressed audio formats forced me to look lesewhere in order to stop blowing mid and high drivers.: )

After the experiment at our CEDIA 2009 3D Stadium with the CINEPRO horns, I ventured into the high spl horns with the System Skoll Pro audio tech. While we were able to release the Kraken equally as scarily as in the CEDIA event, I am still missing clarity during such high spl peaks.

Much like I told Tom Hollman during his Official introduction to THX to a group of CEDIA pre organizers in June 1990 CES, during a demonstration in a great chicago movie theater, the one in between the Hyatt and Marshall fields, it has a corkscrew parking lot that is lots of fun. While after the presentation during an unusually sycophant Q and A session, i stood up and opined on the sizzlingness of the sound:" I dunno but it sounds to me like someone is frying eggs behind the screen"- the guy had a fit as if I had torpedoed his luxury liner.

Well I don't want to hear eggs being fried behind the screen and am afraid Horns just do that. I also had considered the ribbons of Steinway, to a very disappointing "the stage stays behind the screen effect".

I do like the Adams that I have heard.

Enter the best recorded soundtrack on a 3d movie. Despicable Me" Fun Fun Fun" track by Pharell W. It turns out out the sountrack for that was made on the Quested $65,000ea. 4x15 monitors, these sound amazing at 3-4 meter.
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But our home cinemas are 5 to 7 meters in range.

The quested LT series guarantees the exact same accurate and uncolored sound that you get in the Hans Zimmer lab, but at the correct viewing distance. That is exciting indeed.
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post #2 of 19
Thread Starter 
Attached is PDF showing the change in HF response with tweeter behind a Stewart Studitek 130 microperforated screen. The screen sample I have is from 2004, don't know if the performance has improved since then.

The distance between the tweeter and screen makes very little difference.

Please ignore the low frequency content, we had to run the measurement equipment thru a bass driver as well for it to function. The tweeter is running from 2kH upwards.

The red trace is the tweeter, the pink is the effect of the screen, the yellow with 5dB of shelving EQ.

We also measured maximum continuous SPL in an open space, the car park, a single LT20 with 2 subs will deliver 118dB at 5 Metres, 16 feet.

459
post #3 of 19
Quote:
Originally Posted by CINERAMAX View Post

As many will know I have been on a Quest to recreate the ultimate Holosonic experience without fatigue and at high spl levels.

I'd love to hear them properly set up.

Always a pleasure discovering emerging high output/low coloration designs. I recognize the MF/HF drive units, but the LF drives I'm not familiar with. It would be interesting measuring what, if any,.. measurable diffraction component exists due to the cabinet grill edges. Once installed, one would think the clear preference would be no grill listening.

I can appreciate your endeavor to find such reproduction, as I too have been on a similar journey. There are many differing priorities that professionals and enthusiasts utilize as their personal benchmark for what they're striving for in playback characteristics. Me, absolutely coherent dynamic realism,... absent of the typical associated colorations in both the time and frequency domain.

High SPL, high resolving power, low distortion, .... easy. What characteristics/sonic attributes do you feel result in subsequent fatigue?

Thanks
post #4 of 19
Can anyone tell me what the LT20's go for?
post #5 of 19
My next theater is going to have these all round, absolute perfection.

The Quested HM415
post #6 of 19
Prices in pounds.

http://www.prosl.com/quested.pdf

Very cool stuff. No horns, no dynamics!
post #7 of 19
Actually I think it's in euros?

Nice pricings.
post #8 of 19
I assume the actives include the amps.....thats pretty good value.

It costs me ~A$4500 to build something similar DIY (same twetter and mid, +18"), so for a pro version, thats quite reasonable......wish there was a dealer in Sydney
post #9 of 19
The LT20 is a nice compact unit. Should suit even those of us with quite small rooms with mere 3 metre listening positions? If the quoted price of an active LT-20 does indeed include the amps, then it really would be great pricing (this would seem to good to be true).

Peter,

How are these for music blu-rays, say compared to an equivalent PMC set-up?

Sean
post #10 of 19
No idea, but I can say I've never heard dynamics like I have from that mid/tweeter combo - not in any other speaker design. World class "transient response" is something often spoken about.

The really cool thing about these AMT is high SPL that is basically distortion free, good off axis response and "smooth". That mid is superb, but lacks < 80hz, which I assume the two 10" take care of. I'd be interested in the LT20's 40-60hz performance

I am 99% sure I use the same mid and a very similar tweeter - I am extremely pleased for music or movies.
post #11 of 19
Quote:
Originally Posted by Elill View Post

No idea, but I can say I've never heard dynamics like I have from that mid/tweeter combo - not in any other speaker design. World class "transient response" is something often spoken about.

The really cool thing about these AMT is high SPL that is basically distortion free, good off axis response and "smooth". That mid is superb, but lacks < 80hz, which I assume the two 10" take care of. I'd be interested in the LT20's 40-60hz performance

I am 99% sure I use the same mid and a very similar tweeter - I am extremely pleased for music or movies.

Hi Peter,

My question was for Peter a.k.a Cineramax, but your input is very welcome smile.gif. I have been mulling over some PMC IB2i coupled with Bryston 300w Powerpac amps lately, but these Quested are very interesting indeed, especially their active capabilities. I'm looking forward to hearing more reports.

Cheers,

Sean
post #12 of 19
LOL, I thought that might have been the case.

I am a HUGE fan of that mid and AMTs - done properly they far surpass any compression driver out there (and I've heard most of them now). I dont have any of the measurements handy, but what I could do DIY with them is outstanding......I've been wanting to see a commercial application like this for 3-4 years now
post #13 of 19
Thread Starter 
Hi All,

I will report in 5-6 weeks when we start commissioning the ALBIORIX moon atop this building.





post #14 of 19
Peter,
Do you have some place where we can see a gallery of some of your finished theaters ?

Art
post #15 of 19
Quote:
Originally Posted by Art Sonneborn View Post

Peter,
Do you have some place where we can see a gallery of some of your finished theaters ?

Art

There are a few pictures here http://cineramax.com/projects/

Sean
post #16 of 19
Thread Starter 
Hi Art,

This new website is just under construction, no content per se. But you have seen the projects here over the years.

Helene in 2008, prometheus in 2009-10, pandora in 2011, Skoll in 2012. I don't do too many since i will never repeat a technical design so these are high maintenance engineering and support intensive, reliability is due to over engineering mostly.

Stay Tuned we are working on 3 fast track projects overseas.

A new first : Air conditioned seats. Winter clothing is funny, sometimes you can sweat unnecessarily. I thought air conditioned seating was a necessity in the virgin islands, it's way more in Moscow, go figure. Individual chair air conditioning puts the icing on the experience.

USA conceptual:

post #17 of 19
Quote:
Originally Posted by Elill View Post

No idea, but I can say I've never heard dynamics like I have from that mid/tweeter combo - not in any other speaker design. World class "transient response" is something often spoken about.

The really cool thing about these AMT is high SPL that is basically distortion free, good off axis response and "smooth". That mid is superb, but lacks < 80hz, which I assume the two 10" take care of. I'd be interested in the LT20's 40-60hz performance

I am 99% sure I use the same mid and a very similar tweeter - I am extremely pleased for music or movies.

Is that a PHL mid they are using? Am curious to find out more about your DIY speakers. I've been impressed by all the AMTs I've heard.
post #18 of 19
Thread Starter 
Theyre made in ESPANA. Custom tweaked for RQ.
post #19 of 19
Beyma mid and AMT?
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