15" of pure pleasure

[blktre]

Re: 15" of pure pleasure

thanks for that in depth post blktre. 3 feet sealed, seems kind of big, but probly goes lower likewise.

whats the advantage to the 500 watt amp other then the extra controls? its twice the power, but dosent that just put at +3 dB? not worth the extra money. i was consitering making a (perhaps tube) pre amp, tone control box, gain ajuster to set on my reciver, for control at my finger tips, any ideas on that? plans? maybe a link to an amp building forum??

Cubic feet. So the box will be no bigger than 22" cubed which includes internal support. And yes, a smaller box will get you a little lower, but Qtc goes up.

What i like about the amps linked to is that they have built in EQ which is something your going to want. I cant help you on your tone control box. Sounds like an interesting project.

[philiparcario]

Re: 15" of pure pleasure

I own the rss390hf-4 sub my build is an IB works really good as an IB. I had it as a sealed box design but it needs a bigger amp then the sa240. In a sealed box. It is why I said go with the dvc 15 inch sub and use the stellar amp it is 156 dollars with the discount i paid 201 for a few and then got a lot at 156. with free shipping I bought 2 at a time so i was over 200 and I had the 15 % discount. For 156 plus 14 shipping It is really good value. you could even run a pair of 15 inch quatro's stack them like this. see thumbnails.

forget the graphs the titanic will not sound as good for music. been there done that.

the quatro's cost 256 for a pair the amp is 156 it is 412 total pick up the behringer xover for 79. you are at a 503 total. yeah i know its close to 500 but two 15 inch subs a xover and a 235 watt amp for each channel is a lot of gear for 500. your f3 is 36hz and your f6 is 28hz .
you need 3 ft boxes. plus it will let you high pass the three ways as low as 44hz. some one said you have nice 3 way speakers this would free them up from the deep bass. kick drums would sound nice on this system. I chased bass in my house or apartment since 1986. I finally feel like I caught it this year. two nht1259's 50hz to 100hz and the rss390hf-4 in an IB from 18hz to 50hz did the trick.

[Green Machine Mowing]

Re: 15" of pure pleasure

I cant help you on your tone control box. Sounds like an interesting project.

that would be great, problem is that my electronics experience is limited to a blinking led kit i built in middle school and a pair of x-overs, but id love to learn more.

id like to include, gain, sub boost, high and low pass filters maybe phase and some sort of grapic eq from 15 to 120 hz?
sounds like some serous work, mostly to design

id love to have thoes 2 15" and monster amp, but with collage in the near future and a crappy econemy, thats not where i SHOULD spend my money, allthogh, it is where i WANT to.

[Todd G.]

Re: 15" of pure pleasure

todd what does that thing do exactly? ive read bits and peices of the article and cant figure out what it does that could potentialy be a part of the sub control box that i was talking about making

It gives you many bands(20 total I think) of parametric EQ. You can essentially duplicate Linkwitz transform functions if desired, or the similar ESP ELF-type EQ that I linked to above. Looking at your lastest post about the tone control/high pass/etc that you want to build, I would suggest that you look at the Behringer DCX2496. I think it will do all that you want and then some, plus it has extensive EQ abilities.

Look at the Behringer DEQ2496 and the FBQ2496 too before you start building stuff.

As to amps, I would take a hard look at the Behringer EP1500 as a first choice. It could easily handle a second sub down the road if that were necessary, so it could be less expensive in the long run.

[blktre]

Re: 15" of pure pleasure

I

Look at the Behringer DEQ2496 and the FBQ2496 too before you start building stuff.

As to amps, I would take a hard look at the Behringer EP1500 as a first choice. It could easily handle a second sub down the road if that were necessary, so it could be less expensive in the long run.

I chose the FBQ2496. Excellent deal at $150, free shipping thru PE. As far as the Ep1500 goes, its only around $50 less than the Ep2500. And that's where money vs watts can come into play. Could go either way.

I still think for $245 shipped gets the OAudio 500w plate w/EQ and lots of other goodies, $160 for the RSS390HF w/free shipping. Add a little cash for MDF and finish material and for $500 or a tad under you got yourself a tight little boom box w/full EQ.
What i love about this place is all the different ideas and thoughts. Good stuff.

[Fatcat]

Re: 15" of pure pleasure

FWIW I built 2 subs for my 2 channel rig each having a RSS390HF-15 in just shy of a 5cu. ft sealed box (I had the room). I run them in stereo off a Carver TFM-55x amp with just a little boost applied on the lowest octave, they sound excellent and very smooth. They integrate very easily with my mains at 80 Hz.

[Todd G.]

Re: 15" of pure pleasure

FWIW I built 2 subs for my 2 channel rig each having a RSS390HF-15 in just shy of a 5cu. ft sealed box (I had the room). I run them in stereo off a Carver TFM-55x amp with just a little boost applied on the lowest octave, they sound excellent and very smooth. They integrate very easily with my mains at 80 Hz.

I can tell from your pictures that we share a similar lifestyle. I knew I was not alone!

[blktre]

Re: 15" of pure pleasure

I can tell from your pictures that we share a similar lifestyle. I knew I was not alone!

I wasn't going to say anything. I know how hardcore you guys can be

[Fatcat]

Re: 15" of pure pleasure

This just means we are all in good company!;)

[Green Machine Mowing]

Re: 15" of pure pleasure

i was thinking that for the box, its all going to be 1 1/2" (2 peices of 3/4 laminated. and have the baffel, top and back be pre veneered cherry and glue on some stainless steel on the sides. with an 15" dayton rss in it, should be quite nice

[Green Machine Mowing]

Re: 15" of pure pleasure

FWIW I built 2 subs for my 2 channel rig each having a RSS390HF-15 in just shy of a 5cu. ft sealed box (I had the room). I run them in stereo off a Carver TFM-55x amp with just a little boost applied on the lowest octave, they sound excellent and very smooth. They integrate very easily with my mains at 80 Hz.

thoes things are huge, but they look great!

[johnnyrichards]

Re: 15" of pure pleasure

Multiple subs seems to be the way to go, for sure. I have dreams (after my finances get back in line) of doing a battery of ten, eight inch subwoofers. Two in each corner plus two more, one on the left wall and another on the right wall.

The RSS series 8" wouldn't be bad for this, as it will play plenty low enough (~25 Hz), and with ten of them output shouldn't be lacking.

Someday, someday, someday...

[johnnyrichards]

Re: 15" of pure pleasure

However, I have to wait for the 8 ohm version for my plan to work. IF it is even in the works.

My alternative grand plan involves building a trio of 12" HF 8 ohm pairs. That would give me less flexibility in placement but be more than enough output.

[Dirk]

Re: 15" of pure pleasure

I can tell from your pictures that we share a similar lifestyle. I knew I was not alone!

Jeeze, you Star Trek fans are all alike. I bet you're still mad at Lucas for putting Tribbles in Return of the Jedi.

[Green Machine Mowing]

Re: 15" of pure pleasure

Guess i shouldnt of said walked on. But for performance in the size of sealed box your looking at the RSS390HF does very well compared.

The yellow line is the RSS390HF in a 4.0^3 sealed box w/a Qtc of 0.77.
The green line is the Titanic MKIII in a 4.5^3 sealed box w/a Qtc of 0.68.

The RSS390HF goes as deep in a smaller box and doesn't roll off as soon so it should play louder.



I messed with different box sizes and this size of sealed boxes for both drivers is the best i could come up with, including Q. A larger vented box for the MKIII would dig alot deeper, but this driver from all accounts isn't going to give you that tight, punchy sound your looking for. If you cant do the EP2500 and FDP, I suggest the OAudio 500w plate amp, which is my second choice and easily first choice when it comes to price. With the size of box you want, id think a 500w amp would work best imo...Altho, the amp that Phillip posted is an awesome price for what you get for sure, just not enuff watts for me.

http://www.diycable.com/main/product_info.php?products_id=675

EDIT: The RSS HO will need alot larger box to get the same performance as the HF in a smaller box.

do you have any experience with this amp??