[Theronbo]

I watched the New Record Day review of the Caladan speaker.

I don’t have acceptable headphones… so listen on my X-Static + single double trouble OB sub.

The test playlist is really interesting,

However, on Faded Sun by Terje Isungset from the album Winter Songs…

The low frequency was just farting…
 

I turned the volume down to 1/3 from 2/3 no joy.

This sub has worked wonderfully for most music…

I’ll admit doing some bass stress test… it failed too… but… I be like oh, my that’s extreme  don’t need to worry….

Well, no I’m concerned I’m not getting the return on my investment in time & money.

An example of a heavy bass song that it renders beautifully is:

C’est Si Bon by Thomas Dutronc (feat. Iggy Pop & Diana Krall). - the opening few bars as a wonderful bass line… there’s also a sweet jazz guitar rift on an acoustic electric later on…

Other than driving up to Danny’s … I’m tempted… ideas?

[newzooreview]

C’est Si Bon by Thomas Dutronc sounds good on my HiFiman Arya headphones. Good, plucked bass. The Arya is not exactly masterful in reproducing bass, but it is competent.

Have you measured your in-room frequency response? It's possible the room has a suckout at or near the frequency that's disappointing.

A new speaker won't solve that, but it's also cheaper to address than getting new equipment.

[Theronbo]

Thanks…

No, it’s a large room 20x30’

C’est si bon has one of the heaviest low frequency intros of any song I regularly play. I mean it sounds okay without the sub… but is just sublime with the sub.

I did a lot of testing when first built… well especially considering I managed to wire it wrong… twice…

The servo amp control board gives you a few options.

I’m using the preamp outputs fron a Denon X3700 receiver… with LR X-Statics connected to the powered speaker outputs. Both are on LR connection, as is typical.  Have a full 7.2.4 surround system… with the ‘.2.’ Being 2 separate powered subwoofers … only enabled in surround. All the speakers are DIY.

Double Trouble is treated like its 4th driver for L+R … separate 2 subwoofers for pyrotechnics in surround sound.

[Early B.]

No, it’s a large room 20x30’

Whoa! That's a substantial size room for double troubles. I have triple troubles in a 13 x 20 room and I want quad troubles for the 0.003% of the time I'd need it.

[Theronbo]

Whoa! That's a substantial size room for double troubles. I have triple troubles in a 13 x 20 room and I want quad troubles for the 0.003% of the time I'd need it.

Yeah, I was wondering why people were acquiring 2 subs…

I mean for HT & pyrotechnics… 2 makes sense to create directionless effect.

For stereo listening…. I assumed that low frequency was omnidirectional anyway…

But now I kinda wish I had a pair. Not enough to actually build it though.

Oh, also room has 11.5’ ceilings…  sloped from 8’ over 7’ up to 11.5’  (about 30 degree angle). Speakers are on long wall.

[KTS]

Yeah, I was wondering why people were acquiring 2 subs…

I mean for HT & pyrotechnics… 2 makes sense to create directionless effect.

For stereo listening…. I assumed that low frequency was omnidirectional anyway…

But now I kinda wish I had a pair. Not enough to actually build it though.

Oh, also room has 11.5’ ceilings…  sloped from 8’ over 7’ up to 11.5’  (about 30 degree angle). Speakers are on long wall.

If you have not already tried it, you could lay the sub on its side facing you in the center of the room. I use dual double trouble subs in a smaller room than you have and I am happy with the results, they hit different than a boxed sub, but more accurate in my opinion.

[Early B.]

For your room size, you need a minimum of a pair of Triple Threats. I started my OB sub journey with a single dual sub, then went to two, then three for 2-channel only. When I had an HT system, I used a single 15" sealed sub. 

[Danny Richie]

So with most music it sounds wonderful, but on one track in particular is sounds farty?

You could be experiencing the differences in the quality of the recording.

I would also agree with a few others that your room is a little large for a single Double Trouble.

[Theronbo]

Seems it’s related to volume.

1. Turned down volume on the plate amp from 2/3 to 1/3..

Usual listen at 68 on receiver… which is around 80-85 db, for stereo, most all songs.

For Faded Sun the reading is 70 to 95 for mid upper range… but when bass kicks in it’s 105 & at that point I don’t believe my iPhone db app is accurate.

2. Listen at 61 on receiver mid to upper is 60-80db bass is 95. With very little distortion.

So, this recording simply has a much higher dynamic range than most?

[Danny Richie]

105db is really loud and a lot of bass output. Make sure the drivers aren't reaching or near mechanical limits.

If so, try turning on the rumble filter or moving the damping to a higher setting. Moving the extension filter setting up may solve it as well.