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I might be interested in the 3 channel if I knew the model number and price.

Hi Saul, TC Sounds website lists 3.5ft3 net for this driver in a sealed enclosure for home use. The driver itself displaces .14ft3 http://www.tcsounds.com/tc3000.htm

Hi Kevin, The CT-120 can be can be a bit boomy at times but is still no doubt a great sub for the price you paid. It digs far deeper than the Klipsch. Nousaine measured it at 87db@20hz in his 7500ft3 large room back in the day.

I owned the CT-120 and have heard a similar Klipsch sub. The CT-120 is noticeably better. Being that it would be essentially free, go for it.

Hi Derek, I think what Thomas is saying is if you can stretch your budget ever so slightly, the increase in performance of the Quatro would be more than worth the extra $20 or so dollars. Another option would be to look at a used driver like a Shiva or Tempest or possible an Atlas if you're...

That's not too bad for an entry level Velodyne. I don't think I would go too much higher (over $200) though. You can find it online for $330-$350 shipped brand new.

Thanks Robert. I didn't realize this. It looks like I inadvertently tuned the last box I built too high. Can I put a flared port closer to the back of the enclosure than a straight port? I seem to remember the port should be at least one port width away from the back wall. I am hoping I can...

Thomas, You obviously have more knowledge on the subject than I. Can you please tell me why you would add an additional 1" to the port length? Thanks.

Mackie, Thanks for your thoughts. I just didn't realize there would be that large of a difference. After all, HSU does make some subs that are considerably even more powerful still than an STF-3. Like you, I also went from a Velodyne (CT120) to something far more potent, a CS Ultra. Of course...

Sonnie, You ordered a couple of the highest bang for buck subs SVS offers, I think you will be impressed. Mackie, that is a bit surprising to me that the STF-3 would be that much better than the SPL-1000. HSU builds some quality stuff!:emoji_thumbsup:

Hi Justin, The first question I would have is... What do you have so far? Perhaps you have something currently that would not need replacement. If that is the case, you could afford to spend a bit more in areas that might make the biggest difference. Not knowing what you have currently, I...

I already know objectively how SVS stacks up against the HGS Velodynes but would be curious to hear your subjective impressions.

Hi Sonnie, Because your room is so small, I would lean towards the Velodyne route myself. I do tend to believe TomV has a valid point (as usual). If it's slam you're after, more tactile feel, the Earthquake subs may be better. Is SVS an option for you? Being that you have had Velodyne in the...

Hi Henry, I would put the amp as low in the rack as you can and still be able to connect with the cables you currently have. The amp is most likely one of your heavier components and would be most stable down low. As for your other components, arrange them in a way that is most ergonomically...

Hi Eric, The CT120 was my first home theater sub. It did a very respectable job for the money I spent which at the time was $400. So, for $150, I think it would be a great addition to your system. Tom Nousaine had high praise for it when he reviewed it several years ago for Stereo Review. It...

Eclipse has some pretty incredible subs. Many are (were) made by TC Sounds. Most are low FS as well. Unfortunately, most have heard of them, although many have not actually heard them. Incredible drivers if you can get past the fact that many have heard of them. They can be found inexpensively...

Thanks Patrick. That's what I thinking. I just wasn't sure how much of an effect it would have.

I am builing a sub for a friend and need advice on porting. The sub is an Atlas 15. The internal box volume is 8ft3. I will be using two 4" flared precision ports and am looking to tune the box to about 22Hz. I do not really want to tune lower because the room the sub will be used in is huge...

Maybe. But if that's the case, you'd really suffer from upgradeitis with the Sunfire.

Sounds like a no risk proposition to me...

OK, I'll say it. As far as clean, undistorted output and extension, this is no contest. The SVS wins hands down. If space is an issue, which I assume it is not, the Sunfire might be appealing. If you take a look at a review at Secrets (subwoofer...

It may still be a good buy, but... the price has doubled to $799 which puts it in the same price range of alot of very good competition. I think part of the draw of the original was the price/bang for the buck. I have not seen any reviews on the new ones' performance to evaluate whether the...

I agree with Mikey 100%. I normally use my Ultras in the 15Hz tune because there is alot of material at this frequency and below. Just because you can't hear it, doesn't mean you can't feel it. Movie soundtracks are demanding more and more from the LFE channel.

Hi Dick, I agree with you. The impedance of a speaker (in this case a transducer) is not static, it varies with frequency. 8 ohm drivers measuring 3-6 ohms and 4 ohm drivers measuring 1.5-3 ohms has not been my experience. While they often times measure a bit lower than their stated...

Yes, it could cause the amp to burn up. Most amps are not rated for that low of impedance. Series wiring is definitely going to be easier on the amp. The only downside to series wiring would be less overall power.

Yeah, when I measured with an ohmeter, they were lower. If Aura says they can be run in parallel off that amp, I would give it a shot. Don't be too surprised if the amp runs pretty warm though...

When i measured my Aura pro bass shakers, They were roughly 3.5 ohms each. Parallel wiring would equal a 1.75 ohm load at the amp which is mostly likely too low. Your only choice if this is a single channel mono amp, which it sounds like it is, is to wire your shakers in series.

Hi Chuck, Save yourself some money and go for the better sub, the Dayton

They look like pretty decent woofers. 38Hz resonant frequency is good for a 6.5" (165mm). I looked at the other parameters as well. Do you know what the Xmax is? If you can email some pics to me at [email protected], I can probably give you some ideas on how to install them. We will figure...

John, I just rechecked and you are right, the AM15 bass module is powered. Should not affect things too much as long as Fred stays with an 8 ohm load it should be an easy load to drive. If I remember correctly, the passive unit was tested in a magazine years ago and had an efficiency of 84-85db...