How obvious is the difference between a 20hz capable subwoofer and 25hz, 30hz, etc?

[Howard]

Glue does not hold for long.

For f***'s sake, are you serious?

Sure can use epoxies, but speaker drivers can not be installed while it is drying. Screws are actually used for strength. If using screws at an angle, the screw is very strong. Though if using screws from an alloy, the screw is very, very strong.

Sorry, I don't care what you think about me, and you are again wrong about two things. One is the intent of that post, and that was to show the most effective use of screws in simple construction. The second thing you don't seem to understand that in the typical construction of an enclosure made with the typical material (MDF), screws are far weaker. Why don't you put two boxes together, one with properly glued butt joints and the other with screwed butt joints (even with backing blocks), and destroy both? I can tell you which one will fail first at the joint even before you begin.

You are the worst poster in this forum. The Internet is the same as meeting in person, so this how you treat others? If so, we do not serve your kind.

Cry more, because that's all you can do. Even if you could answer my questions (which you can't), you'd be wrong time and time again.

 

[s44]

You are the worst poster in this forum.

Unintentional hilarity alert!

 

[alcoholbob]

This thread is classic. Part of the joys of no-moderation.

 

[Number1]

Glue does not hold for long. Sure can use epoxies, but speaker drivers can not be installed while it is drying. Screws are actually used for strength. If using screws at an angle, the screw is very strong. Though if using screws from an alloy, the screw is very, very strong.

That's just non sense. You have obviously never put a wooden box together. After reading this, it really puts into question ANYTHING you say.

Howard has really shined a bright light on your posts in here and it doesn't look good.

Thanks Howard.

 

[Aharami]

does someone else want to take up my questions?

 

[Number1]

does someone else want to take up my questions?

I modelled the driver into BassBox pro and it looks like a pretty good driver that will go fairly low.
This is an 8 Ohm driver so it would only get 100 W from that amp. Definitely not powerful enough.

 

[sdifox]

does someone else want to take up my questions?

Given your room size, go 15.

 

[Aharami]

I modelled the driver into BassBox pro and it looks like a pretty good driver that will go fairly low.
This is an 8 Ohm driver so it would only get 100 W from that amp. Definitely not powerful enough.

well if I do with the SW-12B, I'll go with two drivers in parallel creating 4ohms total load. I believe the SA-1 amp is rated at 200W at 4 ohms

the main thing that's attracting me to this combo is the price. Even PE can't match that price with just 1 woofer

 

[Howard]

Looking back at my posts last night, it seems I've erred in terms of untoward aggression. I apologize for any offense I may have caused.

This doesn't mean that I've changed my mind about how qualified you are to offer advice on this forum, though.

 

[kornphlake]

I don't think anybody is intentionally trolling here, but obviously there is one person who is posting information they don't fully understand.

If you're interested in loudspeaker design there is plenty of accurate information available on other forums such as DIY audio, HT Guide and the Parts Express Tech Talk board. I suggest turning to one of these forums for advice, generally the ignorant post is either ignored or thrashed into oblivion. The membership at AT doesn't have enough expertise in audio to really be considered a reliable source of information as we see above.

 

[Number1]

well if I do with the SW-12B, I'll go with two drivers in parallel creating 4ohms total load. I believe the SA-1 amp is rated at 200W at 4 ohms

the main thing that's attracting me to this combo is the price. Even PE can't match that price with just 1 woofer

I looked at your link and only saw the deal with one driver and the amp, I should have scrolled down.

 

[jlee]

Installed and set up with Audyssey using settings found at AVSforum and it pales in comparison to my Z560's..there's something wrong, and I have no idea what. If I set the volume at 3ish, the receiver adjusts it by -5db after Audyssey. With volume at 5, it's at -9.5db.

It's next to a wall now - rear port about 5" away. I may try moving it to a corner to see what happens, but at this point I think there's some setting or something that I have horribly wrong.

 

[s44]

Maybe you're not used to relatively flat bass? Play an action movie and you'll feel some serious difference.

 

[sdifox]

Installed and set up with Audyssey using settings found at AVSforum and it pales in comparison to my Z560's..there's something wrong, and I have no idea what. If I set the volume at 3ish, the receiver adjusts it by -5db after Audyssey. With volume at 5, it's at -9.5db.

It's next to a wall now - rear port about 5" away. I may try moving it to a corner to see what happens, but at this point I think there's some setting or something that I have horribly wrong.

You may just had the z560 set too high :biggrin:

 

[vi edit]

How do you have it hooked up? Coax cable from the LFE output on the receiver? Or are you doing the highpass hookup and running your mains through it?

Also do you have the LFE on the receiver set to LFE only are you sending the L/R channels through it too?

One more thing...what's the crossover on the sub set at? do you have it cranked all the way up to 150hz? Maybe back that down to 100hz or so (depending on your fronts) and try rerunning and see what happens.

I don't really like the receiver autosetup on subs. My Onkyo sets it way too hot. My H/K sets it way too low. I've always trusted what sounds good to my ears more than teh receivers.

 

[Howard]

Installed and set up with Audyssey using settings found at AVSforum and it pales in comparison to my Z560's..there's something wrong, and I have no idea what. If I set the volume at 3ish, the receiver adjusts it by -5db after Audyssey. With volume at 5, it's at -9.5db.

It's next to a wall now - rear port about 5" away. I may try moving it to a corner to see what happens, but at this point I think there's some setting or something that I have horribly wrong.

Yeah, my guess would be the Z560 has very boomy bass (high Q) and you're missing the midbass punch that you're used to.

EDIT: When you were using the Z560, was it in the spot that the new sub is in now?

 

[jlee]

You may just had the z560 set too high :biggrin:

Nope, it's been kept on the lowest setting for years.

Maybe you're not used to relatively flat bass? Play an action movie and you'll feel some serious difference.

I played all three Tron trailers and a bit of Terminator 2. It doesn't sound bad, but it doesn't seem to have any power behind it at all.

How do you have it hooked up? Coax cable from the LFE output on the receiver? Or are you doing the highpass hookup and running your mains through it?

Also do you have the LFE on the receiver set to LFE only are you sending the L/R channels through it too?

One more thing...what's the crossover on the sub set at? do you have it cranked all the way up to 150hz? Maybe back that down to 100hz or so (depending on your fronts) and try rerunning and see what happens.

I don't really like the receiver autosetup on subs. My Onkyo sets it way too hot. My H/K sets it way too low. I've always trusted what sounds good to my ears more than teh receivers.

Coax through LFE. The crossover on the subwoofer is disabled when set the way it is ("Digital 5.1/6.1/7.1 Receiver" vs "Pro-logic Receiver").

Yeah, my guess would be the Z560 has very boomy bass (high Q) and you're missing the midbass punch that you're used to.

EDIT: When you were using the Z560, was it in the spot that the new sub is in now?

No, they're in two different rooms. I'll try putting the F12 in the corner and see what that does.

 

[YOyoYOhowsDAjello]

There's also a chance that your Audyssey is messed up somehow. I don't know how likely this is, but it happened to me. I did a reset on the receiver and redid Audyssey.

I had an SPL meter to help me determine that I was right that the bass was actually lower than it should have been (and my ears just weren't deceiving me).

 

[jlee]

There's also a chance that your Audyssey is messed up somehow. I don't know how likely this is, but it happened to me. I did a reset on the receiver and redid Audyssey.

I had an SPL meter to help me determine that I was right that the bass was actually lower than it should have been (and my ears just weren't deceiving me).

I'll try that too - thanks. I might end up getting an SPL meter...will a $30 deal from Amazon do the trick?

 

[electroju]

That's just non sense. You have obviously never put a wooden box together. After reading this, it really puts into question ANYTHING you say.

Howard has really shined a bright light on your posts in here and it doesn't look good.

Thanks Howard.

A good wooden box is not put together with glue. It is put together based on friction. The glue makes the wood swell to improve friction. A good example how friction provides a good method to hold two or more objects together is MythBuster episode of using two telephone books. It took over 8000 pounds to overcome the forces of the friction between each page of the telephone books.

I would not build a house with just glue because nails and screws are technically stronger. There are houses that built using friction, but glue is not used. Using butt joints or miter joints for glue will not last because there will be no friction. Glue breaks when solvent is used or the environment goes out of its minimum and maximum temperatures.

You think I just said to just screw it instead of gluing. When glue breaks, the screws is another guarantee that is still together. It is best to use screws and glue to hold the joint together. Since the glue breaks in a subwoofer over time, the joints will have to be sealed using latex caulk or latex paint.

Howards statements is what he searched on the Internet. Anybody can do that, but applying them is a different story. His statements is actually dull since the immaturity paints an ugly picture.

 

[Howard]

nm, best troll ever

 

[Soundmanred]

nm, best troll ever

Most of them give up eventually, thank God.

 

[Number1]

Installed and set up with Audyssey using settings found at AVSforum and it pales in comparison to my Z560's..there's something wrong, and I have no idea what. If I set the volume at 3ish, the receiver adjusts it by -5db after Audyssey. With volume at 5, it's at -9.5db.

It's next to a wall now - rear port about 5" away. I may try moving it to a corner to see what happens, but at this point I think there's some setting or something that I have horribly wrong.

I have a Onkyo TX-SR607 with Audyssey 2EQ and my sub hooked up to the coaxial LFE output. I can only crank my sub amp (see my sig for details) to 1/4 of the volume before Audyssey's sub attenuation reaches 15 DB, the maximum. Music and movies sound good but the bass never sound overwhelming. It still rattles stuff throughout the house when I crank the receiver.

 

[Number1]

There's also a chance that your Audyssey is messed up somehow. I don't know how likely this is, but it happened to me. I did a reset on the receiver and redid Audyssey.

I had an SPL meter to help me determine that I was right that the bass was actually lower than it should have been (and my ears just weren't deceiving me).

How do you decide what level is right with the meter. Are inexpensive sound meters like the ones available at Part Express any good?

 

[moonboy403]

Installed and set up with Audyssey using settings found at AVSforum and it pales in comparison to my Z560's..there's something wrong, and I have no idea what. If I set the volume at 3ish, the receiver adjusts it by -5db after Audyssey. With volume at 5, it's at -9.5db.

It's next to a wall now - rear port about 5" away. I may try moving it to a corner to see what happens, but at this point I think there's some setting or something that I have horribly wrong.

How do you decide what level is right with the meter. Are inexpensive sound meters like the ones available at Part Express any good?

Get a SPL meter from radioshack and measure the frequency response of your two setup with Room EQ Wizrad and see the actual levels to check for anomoly. It's accurate to within 1db for up to 800Hz compared to much more expensive microphones.