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THX cinema with pro cinema audio gear

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Andysu

Andysu

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Sooty could eq a loudspeaker better than anyone else even me. I learned a lot from Sooty his knowledge exceeds even the top human experts.
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Andysu

Andysu

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I may change the Behringer EPQ304 the frequency roll-off is depressing me :( I mean I can get it flat with some altering the frequency but generally its the design of the amp.
Sweep is from 200Hz to 22.000KHz - DCX2496 crossover 401Hz to highest as the top end crossover is left off.
Red is Behringer ECM8000 on axis against the projection screen and even the projection screen alters some of the frequency. I switched off the Behringer PEQ on the DCX2496 for the in-room sweep.

Blue is direct amplifier return measurement though the THX crossover monitor to pc computer where it is flat of course since it it isn't interacting with the room.

RTA sweep.jpg
 
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Andysu

Andysu

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This few years ago, Sound in background in home THX cinema on the JBL 2371 HF horns only the bass bins are muted.

 
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Andysu

Andysu

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On the other five screen JBL - not tried the same opening scene on the newer JBL cinema professional yet sure it would go down a bit more lower on that BASS SLAM! Of the screen channels and LFE.1 "baby boom". It sounds like pre THX deep note with the music and choir then SLAM bright daylight!

 
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Andysu

Andysu

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Enough about my THX cinema, time for some cats.

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Bear, my what mighty big teeth you have.

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Magic licking his mouth, oh feeding time....

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And my sweeties Sooty, miss him dearly each single moment.
 
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Andysu

Andysu

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Look at those snappers, will you. Surprised how good the Laserdisc is on the Denon, Oled the Denon using some of it's upscale gives a nice stable image in some areas. Look at those snappers, will you. The only lacking with Denon AVC-X8500H is a chroma level adjustment so I can reduce the rainbow colour effect on Ralph's hat.
 
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Andysu

Andysu

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Basic Instinct (1992) PAL Laserdisc looks remarkable good for Laserdisc on Denon AVC-X8500H to LG OLED 65C9MLB that is mostly used and less with the 4k laser projector that has 35,000hrs onit and hardly used since I got early this year, or was it late last year? The region 2 DVD last spinnedit years ago, trying to give Laserdisc a comeback cos fed up with 4k format.
 
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Andysu

Andysu

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Sooty, understood calibrating EQ more than myself and anyone else for that matter, Sooty, could get perfect sub bass anywhere in the room.
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Sooty, the true JBL sub bass kitten.
 
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Andysu

Andysu

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Bear, understands sub bass. This is as far as we ever been able to get.
 
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Andysu

Andysu

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Arrived today, 'Basic Instinct' (1992) Laserdisc - NTSC Dolby Digital
Had the PAL Laserdisc pressing since 1993.

basic 1.jpg


The transfer colour is different between the NTSC and PAL.
The Dolby Digital pressing was released on 1997.

Also have region 2 DVD that was released on 2002. The colours are nicer on the region 2 DVD thou maybe some video manipulation has been applied as some scenes have far too much contrast on "the beach house" scene, that washes out some ocean waves in the background.
The PAL laserdisc has slightly better red colour than a later NTSC pressing or it's the "Never Twice The Same Colour" issue? Or the colourest messing with computer altering the tone of the red?

Red is good on the region 2 DVD. The NTSC red is just paler looking on a traffic light same goes with orange a fraction paler.
I could get used to the NTSC for Dolby Digital that is better than the region 2 DVD that sounds like a near field remix.
One scene that stands out clearer is where "Catherine Tramell" flicks a cigarette-butt with her fingertip is far clearer on the NTSC Dolby Digital and less so on the region 2 DVD where I can only hear a muffled sound of flicking the cigarette-butt.

Several release formats for 'Basic Instinct;' Dolby Stereo SR and France LC-Concept Digital Sound, that got into big troubles during the earl 1990's and lasted for mere few films.

Pictures taken with Canon EOS 750D DLSR

NTSC pressing
NTSC 1.jpg


PAL pressing

PAL 1.jpg



NTSC pressing
NTSC 2.jpg


PAL pressing
PAL 2.jpg


NTSC pressing
NTSC 3.jpg

PAL presssing
PAL 3.jpg


NTSC pressing
NTSC 4.jpg


PAL pressing
PAL 4.jpg
 
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Andysu

Andysu

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Basic Instinct Laserdisc review of the picture and soundtrack.

The AC-3 Laserdisc sounds far better than dvd and most likely blu-4k atmos.

The Behringer ECM8000 microphones are placed near close to the projection screen of the JBL 2380A but the bass end is too much! I may lower the EQ for the bass on the audio mixer and use a low pass filter as its way too high in bass level. Third mic ECM8000 is placed near to my seating position so I can comment.

 

73hadd

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Hi! Do you prefer the sound of the 8330A or the 8330? I wish the 8330A still had the "flat" response switch. I couldn't find xover schematics to determine if it would be an easy mod.
 
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Andysu

Andysu

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Hi! Do you prefer the sound of the 8330A or the 8330? I wish the 8330A still had the "flat" response switch. I couldn't find xover schematics to determine if it would be an easy mod.
Let me see, I have look into it.
 
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Andysu

Andysu

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Schematic found here for crossover https://usermanual.wiki/JBL/8330.948437242

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Magic wants to jump inside it like he did, few years ago.

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Switch for ISO2969 X-curve. I leave it in the off position.

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Passive crossover three-way

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JBL 8330 mkII THX Approved and cat approved as well.
 
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Andysu

Andysu

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Mic 1 close to screen centre HF horn JBL 2380A
Mic 2 at centre front row seat

2 mics REW.jpg


speaker test.jpg


Resolution is fuzzy when microphone is moved away further from the speaker kinder like a camera that isn't focused on the subject. Of course I can use smoothing on the fuzzy graph to focus for sharpness of the frequency. The wavelengths of the upper high frequencies is very narrow down to millimeters in length.

test speaker.jpg


test 2.jpg

Ra out of PEQ filters on the Behringer DCX2496. I think I may get another cheap DEQ2496 or maybe FBQ2496 then I can daisy-chain the FBQ2496 channel A to channel B and have a maximum of 40 PEQ bands to tackle the HF horns with the DCX2496 for fin tuning between the bass-mid to HF horn.
 
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Andysu

Andysu

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LCR JBL 2445 CD / 2380A horns
Ran out of PEQ. I should have some extra PEQ to trim this better by next week. Sounds good with dialog pans in Die Hard 2 (1990)

LCR.jpg


dh.jpg

I can still hear the whisper "(wtf)" as it was in Dolby SR back in 1990 at UCI tower park.
 
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Andysu

Andysu

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I can always hear that squeaky sound on the higher highs with DSP computer software. I hear it on my laptop and on the pc.

 
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Andysu

Andysu

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Doing some FBQ2496 simulations to see how many PEQ bands. 20 PEQ bands okay not bad I guess it would sound good so have to wait till the other FBQ2496 arrive as I only have 1 FBQ and and need x2 more for the five screen HF channels. FBQ has narrow Q bandwidth filters that can use to iron out the smoothness a few minor creases won't bother me as long as they are within tiny +- dB.

REW with Bear.jpg


REW.jpg
 
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Andysu

Andysu

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Finlandia, end credits Die Hard 2, Bear and Magic haven't been sat close to each other for months.

 
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