The Official JTR Speakers Subwoofer Discussion Thread!

Jack1949

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Jun 9, 2017
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271
Location
Loveland, Colorado
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Yamaha RX-A3040
Additional Amp
KING 5-CHerry Amp - Digital Amplifier Co.
Universal / Blu-ray / CD Player
Oppo BDP-103D
Front Speakers
JTR 210RT
Center Channel Speaker
JTR 210RM
Surround Speakers
Ascend Acoustics Sierra Towers with RAAL
Front Height Speakers
Polk Audio RT55i
Rear Height Speakers
Polk Audio RT35i
Subwoofers
Dual JTR 118HT
Other Speakers or Equipment
miniDSP 2x4 HD
Video Display Device
Samsung UN60H6350
I also found the LF Adjust function to be a great help. I listen mostly to music and for a long time I ran with LFA set to max on my 118HT subs, but bass heavy songs would be overwhelming. I dialed back the LFA to just below the midpoint and that resolved the problem. The subs still produce very strong bass, but much more controlled and detailed.
 

Todd Anderson

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Jan 20, 2017
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9,225
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Balt/Wash Metro
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Preamp, Processor or Receiver
StormAudio ISP.24 MK2
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Emotiva XPA-5
Additional Amp
Emotiva XPA Gen3 2.8 multichannel amp
Other Amp
Denon X8500H
Computer Audio
AudioEngine A2+
DAC
THX ONYX
Universal / Blu-ray / CD Player
Kaleidescape TERRA, OPPO UDP-203, Panasonic UB9000
Front Speakers
GoldenEar Technology Triton One.R
Center Channel Speaker
GoldenEar Technology SuperCenter Reference
Surround Speakers
SVS Ultra Surround
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SVS Ultra Bookshelf
Front Height Speakers
SVS Prime Elevation x4 (Top Front, Top Mid-Front)
Rear Height Speakers
SVS Prime Elevation x4 (Top Middle, Top Rear)
Subwoofers
dual SVS SB16s + dual PSA XS30s
Other Speakers or Equipment
Behringer 1124p; Aura Bass Shaker Pros; SuperSub X
Video Display Device
JVC NX7
Screen
Seymour Screen Excellence, Enlightor NEO AT Screen
Streaming Equipment
iFi Audio Zen Blue
Streaming Subscriptions
Qobuz, TIDAL, Spotify, ROON
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LG Electronics 65-inch B6 OLED, Sony 65-inch X900F, ZeroSurge 8R15W x 2, ZeroSurge 2R15W x 2
This Captivator 2400XS hasn't launched yet, right?
 
Joined
Apr 25, 2017
Messages
26
Location
Union Grove WI
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Main Amp
Theater - 2x Lab Gruppen fp1000Q
Additional Amp
2 Channel - Cherry Amp Company, Megaschino monos
Front Speakers
JTR
Center Channel Speaker
JTR
Surround Speakers
JTR
Surround Back Speakers
JTR
Subwoofers
JTR
Other Speakers or Equipment
Cherry Amp Company - DAC DAC 2
Screen
Seymour - NEO

Sonnie

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Apr 2, 2017
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5,154
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Alabama
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StormAudio ISP Elite 24 MK3 Processor
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McIntosh MC1.25KW Monoblock Amps
Additional Amp
StormAudio PA 16 MK3
Computer Audio
Intel NUC w/ Roon ROCK
Universal / Blu-ray / CD Player
Panasonic UB9000 4K UHD Player (for media discs)
Front Speakers
RTJ 410
Center Channel Speaker
MartinLogan Focus C-18
Front Wide Speakers
JTR Neosis 110HT
Surround Speakers
JTR Neosis 210RT
Surround Back Speakers
JTR Neosis 210RT
Front Height Speakers
JTR Neosis 110HT-SL
Rear Height Speakers
JTR Neosis 110HT-SL
Subwoofers
JTR Captivator 2400 x6
Other Speakers or Equipment
VTI Amp Stands for the Monoblocks
Video Display Device
Sony 98X90L
Remote Control
Universal MX-890
Streaming Equipment
Kaleidescape | FireCube | Lenova Carbon X1 and Intel NUC for Roon
Streaming Subscriptions
Lifetime Roon Subscription
Tidal
qobuz
Netflix
Amazon Prime
Satellite System
Dish Joey 4K
Other Equipment
Zero Surge 8R15W-1 | Salamander Synergy Equipment Stand
JTR time... about to let all my SVS subs go and get down to some serious subwoofin' with JTR Captivators. Haven't decided on which ones or how many, but my initial thinking is 6 of the 2400 ported units. I'll be discussing it with Jeff tomorrow and hopefully figure out which direction I'll go.

DLART plays a factor in this, as it can defeat "room gain," which can be a result of decay. Example is my subs have extension down to 14Hz (-3dB) with the HTP-1 DLBC, but with my MK3 DLART, there is a sharp drop off at 20Hz. Measuring any of these subs nearfield shows significant dropoff below 20Hz that is gained back at the listening position due to room gain when using the HTP-1 DLBC, which is likely decay that DLART is eliminating using the MK3. No proof at this point, but a reasonable theory of why the measurements are different. I haven't been noticing the issue with music, which is mostly what I have been testing the MK3 with since I've had it, but here lately I've started testing some movies with bass and found the subs to be lacking on sub-20Hz scenes.

It seems like the subs actually need to be able to produce substantial output below 20Hz without room gain to get the best from DLART, and I think JTR's 10Hz tuned subs are probably the best option to get where I'd like to be on movies, yet still excellent on music.
 

Sonnie

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Apr 2, 2017
Messages
5,154
Location
Alabama
More  
Preamp, Processor or Receiver
StormAudio ISP Elite 24 MK3 Processor
Main Amp
McIntosh MC1.25KW Monoblock Amps
Additional Amp
StormAudio PA 16 MK3
Computer Audio
Intel NUC w/ Roon ROCK
Universal / Blu-ray / CD Player
Panasonic UB9000 4K UHD Player (for media discs)
Front Speakers
RTJ 410
Center Channel Speaker
MartinLogan Focus C-18
Front Wide Speakers
JTR Neosis 110HT
Surround Speakers
JTR Neosis 210RT
Surround Back Speakers
JTR Neosis 210RT
Front Height Speakers
JTR Neosis 110HT-SL
Rear Height Speakers
JTR Neosis 110HT-SL
Subwoofers
JTR Captivator 2400 x6
Other Speakers or Equipment
VTI Amp Stands for the Monoblocks
Video Display Device
Sony 98X90L
Remote Control
Universal MX-890
Streaming Equipment
Kaleidescape | FireCube | Lenova Carbon X1 and Intel NUC for Roon
Streaming Subscriptions
Lifetime Roon Subscription
Tidal
qobuz
Netflix
Amazon Prime
Satellite System
Dish Joey 4K
Other Equipment
Zero Surge 8R15W-1 | Salamander Synergy Equipment Stand
Got six of the JTF Cap 2400 units ordered with Jeff today... gotta start selling off SVS subs now.
 
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