How To Set Up My New Subwoofer..?? - AVS Forum
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post #1 of 15 Old 08-26-2012, 11:39 AM - Thread Starter
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Here`s what I have: A simple 2 ch music setup.
I use a phono preamp with a volume control feeding straight into my amp (Parasound HCA1500) that powers my speakers. The Parasound has an extra pair of RCA outs if that helps.
Now here`s where I`m looking for advice/suggestions.
I bought a Passive subwoofer..nothing but a box with a woofer that has ONE (+) and ONE ( -) speaker wire terminals that`s it.

I need a x-over and amp that will allow me to relieve the speakers from low bass duty 60-80 hz would be fine. 500-1200 watt 4 ohm capable amp is probably needed.

So how would the experts here go about this ?

Steve
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post #2 of 15 Old 08-29-2012, 05:16 AM - Thread Starter
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Nothing !?
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post #3 of 15 Old 08-29-2012, 08:34 AM
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Niles Audio SWA-500M looks like it might be a possible solution for your needs. Outside of this, I recall Boston and Polk making component amps for passive type subs.

What type of passive sub do you own?
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post #4 of 15 Old 08-30-2012, 04:42 AM - Thread Starter
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I`ll look into that. The sub is a Revel Ultima Sub-15
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post #5 of 15 Old 08-30-2012, 06:19 AM
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Ahh...you need much more than the idea I posted. The sub you have was designed for use with an amp known as the LE-1...capable of driving two Sub 15's if desired. Needless to say, locating a LE-1 would be a tough task. Moreover, cost would be an issue in my mind. At a cost of $750.00, I think you need to check out the SVS STA-800H. It's loaded with options and has more than enough power to properly drive that Revel.
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post #6 of 15 Old 08-30-2012, 04:03 PM - Thread Starter
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Won`t work no speaker high level connections..But Thanks
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post #7 of 15 Old 09-02-2012, 11:21 AM
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Ask the DIY guys on AVS. They know all about pairing amps with passive subwoofers (typically after they build the sub, of course smile.gif )

Just let 'em know you need an external amp in your post title.

Your questions are answered: Speaker FAQ
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post #8 of 15 Old 09-02-2012, 05:36 PM - Thread Starter
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Thanks..I posted there,but so far, not really much in the way of help.
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post #9 of 15 Old 09-03-2012, 08:28 AM
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Interesting scenario. I know of no ideal, one box solutions.

But, I believe you could approach this somewhat differently, and it could turn out even better (I know, someone re-engineering the wheel eek.gif ).

How's this; Buy the ubiquitous Velodyne SMS-1, utilize it for high passing your mains and alleviating un-necessary and undue strain with them. Then via the low side you've got an outstandingly versatile manual or fully automatic EQ with the great SMS-1. It comes with a mic, cable, mic stand etc,. It really is a terrific product. It's had updates and refinements throughout over time, and still today, it possesses a strong feature set and performance and the price has steadily dropped little by little.

Additionally, it's truly wonderful to have both;
a.) various EQ curves that you can pull up at the punch of a button
b.) also subwoofer system volume control at your finger tips

This product has sold thousands of units. Upon it's release, it was heralded as the greatest thing since sliced bread by all the audio press, ...being it was ahead of it's time and essentially, the first of it's kind. It's really stood the test of time. I bought one to experiment with a couple years ago, it's great. There's so many user guides out there too.

So, unless there's some aspect that I'm not familiar with, I think it could perform the tasks you need. heck it out and see what you think.

Still, you're going to need an amplifier, there's many inexpensive, high performance subwoofer amps. I don't know exactly how much power you need, but Behringer's offerings, either I-Nuke, or EP2500/EP4000 would be fine. Crown's similarly priced offering would be great too. If fan noise is an issue, look at Yamaha's inexpensive amps.


Good luck

btw; be mindful of upgrading to dual subs, so you may buy amp accordingly

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post #10 of 15 Old 09-03-2012, 09:29 AM
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Dayton SA1000 amp is a popular option.

http://www.parts-express.com/pe/showdetl.cfm?partnumber=300-811

If fan noise is not a problem I'd strongly recommend looking at the pro amp alternatives. I am personally using Behringer INuke 3000DSP.

You may get decent results by running the mains full range. Let them overlap with the sub and set the low pass filter on the sub as high as you can without running into localization issues. I'd try at least 120Hz for the LPF.

good luck
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post #11 of 15 Old 09-03-2012, 06:09 PM - Thread Starter
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Thanks FOH, Zheka. The SVS-1 and the Dayton are on the list for consideration. I`ve used the Behringer EP1500 with my Magnepan 1.6`s and they do have some grunt to them absolutely. The class D stuff..
not sure I want to delve into that as I really only listen to vinyl.
That`s one reason the SVS may work for me. I also didn`t know that there were different versions of it out there. I`ll look into it a little closer.

As far as running the mains full..I`m looking forward to what they can do when they don`t have to work so hard. I think they (F52`s) were crossed over to something like 80Hz with the LE-1 Ultima Sub 15 combo.
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post #12 of 15 Old 09-03-2012, 07:37 PM
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Quote:
Originally Posted by pinkey View Post

As far as running the mains full..I`m looking forward to what they can do when they don`t have to work so hard. I think they (F52`s) were crossed over to something like 80Hz with the LE-1 Ultima Sub 15 combo.
Limiting the mains to 80Hz and up is probably a good idea. Still I'd suggest you try to run the sub higher, overlapping with the mains, sort of like flanking sub scenario. The idea is to have as many sources in the modal region as possible.
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post #13 of 15 Old 09-11-2012, 06:11 AM - Thread Starter
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Well I decided to use the Dayton SA 1000. The crossover for the mains looks right for one and should have enough power for my conservative 2 ch listening. Will see.
http://www.parts-express.com/pe/showdetl.cfm?partnumber=300-811
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post #14 of 15 Old 09-11-2012, 06:37 AM
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Quote:
Originally Posted by pinkey View Post

Here`s what I have: A simple 2 ch music setup.
I use a phono preamp with a volume control feeding straight into my amp (Parasound HCA1500) that powers my speakers. The Parasound has an extra pair of RCA outs if that helps.
Now here`s where I`m looking for advice/suggestions.
I bought a Passive subwoofer..nothing but a box with a woofer that has ONE (+) and ONE ( -) speaker wire terminals that`s it.
I need a x-over and amp that will allow me to relieve the speakers from low bass duty 60-80 hz would be fine. 500-1200 watt 4 ohm capable amp is probably needed.
So how would the experts here go about this ?
Steve

The classic subwoofer crossover is the Berhringer DCX 2496. You can hook it to the extra set of RCA jacks on the Parasound with RCA-To-XLR adaptors.

The power amp that goes with the DCX 2496 is is the Behringer EP 4000.

I'm surprised you haven't looked into the Revel LE-1 crossover/amp

http://www.revelspeakers.com/downloads/products/prod_171_634698341538168808_Sub-15%20&%20LE-1%20Owner's%20Manual.PDF
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post #15 of 15 Old 09-11-2012, 07:02 AM - Thread Starter
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Quote:
Originally Posted by arnyk View Post

The classic subwoofer crossover is the Berhringer DCX 2496. You can hook it to the extra set of RCA jacks on the Parasound with RCA-To-XLR adaptors.
The power amp that goes with the DCX 2496 is is the Behringer EP 4000.
I'm surprised you haven't looked into the Revel LE-1 crossover/amp
http://www.revelspeakers.com/downloads/products/prod_171_634698341538168808_Sub-15%20&%20LE-1%20Owner's%20Manual.PDF

I did look at the specs of the LE-1 and I would be hesitant to buy one even if I could find one somewhere. For $6K they had problems and AFAIK non serviceable.
The mains cross at 80Hz with 12db slope..exactly what the recommendation from Revel is.
I`ve had Behringer and I have nothing against them at all.
This amp seems to have what I`m looking for..I hope:)
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