How come I can't bottom my subs (1 Viewer)

[Greg Br]

Well its been a couple of weeks since I added the Samson amp to my Dual SVS 20-39cs with the Improved driver and no matter what I do I have never heard a "clack". I see the amp clipping hard but hear no clack. I assume since I am not hearing it bottom, if there is no distortion I could keep pushing these subs to see what they can do. I was reference +5 db's and I had no problems on TPM THX. Maybe these new drivers are extremely hard to bottom.

 

[GabrielC]

These expert users quickly discovered far better resistance to bottoming at extreme levels, stronger, deeper bass, and dropped jaws like they hadn't been dropped since they first unboxed their SVS's

-SVS site
Well, Tom and Ron have always lived up to their word, just smile

 

[ColinM]

Describe that experience for me....

 

[Greg Br]

Thats a tough one, for starters TPM Intro, the ball exploding is picture knocking but the sweep down never did alot for me but last night when I was +5 I could really FEEL some good stuff at the very end.

The best intro for me is the T2 THX intro, when I played that my wifes eyes got real big and my daughter whent running for a different room. Visualy think of Close Encounters of the Third Kind, when the ships come around and it looks like all hell is breaking loose, ok well maybe thats a stretch, at least till I get a couple of SS'S in th room.

 

[Greg Br]

Colin, I thought I posted alot but 599 posts and you have only been logged 4 days longer than me, congrats on a quick 600!

 

[ColinM]

Boring desk job

HT obsession

I look for questions with zero replies, I like to help.

If I don't know WTF is going on, I shut up. 600!!! WOOOO!

Thanks!

 

[Earl J]

Hey Greg, do you have the Gain all the way up on the amp? Have you calibrated your speakers? Just curious cuz that TPM THX intro does a number on my 2039CS (new driver on the way )

 

[Craig_B]

Greg,

I had no problem bottoming mine, but I guess I was about 5 to 10db over reference with a new single 20-39cs and Samson S700 calibrated to the Denons internal test tones. Now that I have it calibrated to VE, it will just start to bottom at reference at the intro on Toy Story 2 when the name "Toy Story 2" comes on the screen. Is the TPM THX intro lower and louder than the Toy Story logo intro? I usually use the pod race as a demo, so I will have to try out the THX ball exploding. Can you get directly to it from the scene index?

 

[Greg Br]

I have not tried Toy Story, and all the movie intros are on the new S&V Home Theater disk so that is where I get it from. Its a good thing that it does not bottom, I just want to make sure I am pushing them the way I should be.

I have the Samson at -10dbs so its not quite full gain, this helps reduce the ground loop

 

[Dustin B]

Figure out how to change titles on your DVD player. Then the THX intro is title 10. Bloopers are title 3.

 

[Dalton]

Greg,

I know this isn't topic related but i have seen some users that have only been here 2 months with over 1000 posts! BTW, i am installing my ISD's on my 25-31's right after i get off the computer. Can't wait to hear em!!

 

[JohnMW]

Warning: The THX into on TPM will wreak havoc on your SVS. I have dual 20-39CS+'s w/ Samson 1000 (calibrated w/ AVIA @ 88db) and @ -10db on my 3802 I hear a "pop" when the ball explodes, and it doesn't sound very good when doing so.

 

[Greg Br]

I have to be honest, I feel like I have alot of room still to push these. I am calibrated I am sure of that, I might really push these subs tonight and take some measurements as well, but if I can calibrate 5db's hot and then I am +10db's over reference and hear nothing then I am going to think that something is wrong.

 

[Troy_K]

Greg,

You may not believe me, but...

I have the S&V disk, and I rented TPM this week. There is a difference between the 2 THX intros. My SVS will "pop" during the ball explosion on the TPM Disk, but I can push the S&V disk much higher (above reference like you stated) and it will not bottom out. I bottom at -12 on TPM.

My sub is calibrated equally with all speakers - not hot!

Go figure...

Troy

 

[Greg Br]

I agree, I am sure they know it is a sub killer. Its like the normal THX intro, depending on the DVD it sounds louder, for me the THX intro on T2 is by far the loudest. I have yet to bottom on anything yet, tomorrow I will have Toy Story 2, I am going to push it.

 

[Craig_B]

Troy,

I don't understand how you can be calibrated at 75 and then the sub will bottom at -12. Can you play any of the other bass heavy scenes at reference or will they all bottom the sub? I was having a similar problem and then I found that the internal test tones I had calibrated off of were not correct and I ended up lowering my sub by about 8 after using VE to calibrate.

Craig

 

[VinhT]

The way you guys talk about bottoming-out due to high volume levels... I was under the impression that bottoming-out occurs when the frequency being played goes too far below the F3 of the sub. Could someone correct me on this?

 

[Troy_K]

Craig,

To my knowledge, I have not bottomed out on any other source material, and I play it very loud. I have reached 115 db easy when I watch TS2 for example.

Troy

 

[Drew Bethel]

Ok, what is TPM?

 

[Dave Schofield]

Star Wars: Episode 1 - The Phantom Menace