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Author Topic: Build the FFRSMark 4:20i. plans/parts here!  (Read 78778 times)
Henry
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« Reply #195 on: January 16, 2016, 01:11:18 PM »

I now have four FFRS (two originals and two in stoneware) and have listened to them for a few weeks.  They are running in stereo (2+2) and wired in parallel presenting something close to a four ohm load to the Crown amp.

If you can swing making four I highly recommend it for several reasons.  I have the four distributed on the front wall, a few feet apart on ether side of the speakers (I don't have corners and the Horns sound best a couple of feet from the wall in this room).  The bass is impressive with its effortlessness; even at low volume something special is happening.  It's coherent and dynamic, seemingly augmenting/improving the imaging of the presentation.  

The low-frequency room modes have greatly diminished in my 15' square room with 10' ceiling.  The front wall is live and the back is fairly dead with upholstered sofa, and 6'x2'x4" bass panels on each side of a draped double window.  There is a thick wool rug covering most of the wooden floor.  The additional woofers made a big improvement in the room's acoustic colorations for sure.

So, I have more coherency and dynamics and the square-room peaky bass modes have been vanquished.  My stuff has never sounded better and a few hundred bucks is all it took. Smiley

Henry are you running an  infividual set of speaker wires to each sub, or,daisy chaining from one left sub to the second left sub?

Have you tried both ways and seen any differences?

Also what guage wire are you using?

Thanks

I meant to say they were wired in series using the Walmart extension cord (14ga.)  I haven't tried them in parallel.
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tone deaf
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« Reply #196 on: May 10, 2016, 10:04:55 AM »


    I am just getting around to building these suds. ED said he is adding a phase reversal switch. But he didn't say why. Could someone tell me why I would want to reverse the phase of one or both sub woofers, please? I'd really appreciate it. I'm about to close them up. Should I get some switch's first? Huh
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Steve F
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« Reply #197 on: May 10, 2016, 03:10:13 PM »

A phase reversal switch is a convenience thing. You could just switch the positive and negative wires on each sub too. Mine had dual banana plugs so it was easy. Just remember that both subs must have the same wiring or they will cancel out each other.
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tone deaf
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« Reply #198 on: May 10, 2016, 10:03:38 PM »

   Yes, but why would I need to reverse the polarity of the sub woofers?
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Steve F
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« Reply #199 on: May 11, 2016, 07:39:36 PM »

Sometimes room placement will get things out of phase. It's just not her tool to experiment with. When I had them, mine worked best in phase. YMMV.
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tone deaf
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« Reply #200 on: May 11, 2016, 08:55:02 PM »

 Thank you Steve.
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tone deaf
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« Reply #201 on: May 13, 2016, 06:23:19 PM »

   Just finished my pair of bucket subs a few hours ago. Hooked them up in parallel, bridged mono. I haven't fooled around with the crossover yet. Just set it at 56Hz low pass. Magic cables with 600 ohm resistors, from my Tube Lab 300B amp speaker binding posts, to the Crown XLS 1500.
     Put on Reference Recordings, Virgil Fox, The Bach Gamut. Man, that organ hits some low notes. And the two buckets reproduces then effortlessly. I have the volume of the Crown at about twelve o'clock. I think I might be able to lower it one notch. I'll have to listen some more. Also, so far, it sounds really good with the crossover set at 56 Hz.
      The Crown signal LED lights up, but not one of the signal level LEDS light up. But I guess its getting enough power with the 600 ohm resistors, because it sounds great. Really fills in the lower end that the BK-16's couldn't do. And blends very well. You can't tell that the bass is coming from the buckets. I am a happy camper. Grin
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Steve F
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« Reply #202 on: May 13, 2016, 06:52:02 PM »

Tone, The Crown seems to have just unlimited current delivery for the buckets. Keep playing around with your set up. The buckets seem to work best below an 80HZ crossover point. I'm guessing that at your volume setting, the amp is pretty much coasting. That is ideal. Lots of current, big time adjustability and no clipping. Next you need to try the Horns, and eventually add the Heils. Ed even uses electronic crossovers between the Horns and Heils.

I think Henry uses Model 2 Horns and four of the bucket subs? The point is, besides being jealous, all of Ed's stuff can be built upon, without getting obsolete. Only a few brands can claim that.

Enjoy your system,

steve
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johnnycopy
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« Reply #203 on: May 13, 2016, 07:37:02 PM »

Just finished four bucket subs and run them with a crown xls 2000 running them at 53 hz.

They are wicked good.  Thanks ed for sharing and thanks to ed and henry for their helpful questions during my build.

I added sexy grilles on mine for an extra 12 dollars (for all 4)

Tried to add a picture but it said upload folder is full.
« Last Edit: May 13, 2016, 07:40:26 PM by johnnycopy » Logged
Henry
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« Reply #204 on: May 14, 2016, 12:26:53 AM »

Hey guys, I have two xls 2500 amps running four subs in bridged mode.  It isn't about volume. It is about how fast they start and stop.  This is what makes music real to me. 

Who would have thought Ed could do this?  Grin
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tone deaf
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« Reply #205 on: May 14, 2016, 03:57:56 AM »

      They are sounding great. I can play with the cross over, but set at 56Hz it is seamless.
       I saw someone's buckets that were black, and they put chrome car door trim around the edge of the top of the subwoofer (bottom edge of bucket). I did the same. Except that I used gold car door trim on the black bucket, and the black waffle grills from Parts Express. They look really good for a bucket. Now I need to find someone to make a dress for them, with an elastic waist band, to slip over it to dress it up a bit more. I'll even let my wife pick the color material. I think with a nice dress on them they will even be wife acceptable. Although, my wife hasn't complained about the idea of me putting two buckets in the den.
   When I was looking for single driver speakers, I think it was just before  Ed came out with the cube. I looked at Ed's speakers first because I heard some much great thinks about them. But I didn't have any corners to put them in. So I bought a pair of Madisound BK-16's. So far they sound great. And now with the subs they are awesome! Mind you, I live at the south west corner of hell, and I've hadn't the luxury of hearing any other full range speakers to compare. Anyway, I'm really happy for now. Thank you all for all the help you all have been. Wow that's a lot of all's. When I get the dress's made Ill post some pictures. Can't photograph my little girls naked. Child subwoofer porn. Oh no! Roll Eyes
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tone deaf
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« Reply #206 on: May 16, 2016, 02:33:49 AM »

    I put on a CD with a lot of stand up bass in it, and I guess since this instrument spans the frequencies where the cross over point for the subwoofer should be, it's a good CD to set up the subs.
    With this CD it didn't sound right set at 56Hz, so I upped it to 59Hz. This made a big difference. Now even the bass notes that are not going to the sub seem to have more weight and body to them, as does the rest of the music.
     Tomorrow, I'll try upping it up one more notch, but I think that might be to high. It sounds so good at 59Hz. Gee this is fun.
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Ed Schilling
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« Reply #207 on: May 16, 2016, 04:08:11 PM »

Thanks guys, how great is it that something so simple works so freakishly well? It really is a "SUB woofer" not a bass augmenter like the Cube.

TD, I am at 63hz and have been once I set it in the beginning. There's simply no need for me to screw with it...........again, I find that crazy too. Many guys constantly adjust levels on their subs....mine has been "set and forget"

I'm ecstatic you guys are happy!

Ed
ps...get the women in your life "Sabre Red Crossfire" pepper gel....get one for you. Trust me here, I was forced to use mine. The results were spectacular. Way better than fighting or shooting Smiley and man oh man did it do the trick.  http://www.ebay.com/itm/Sabre-Red-Pepper-Spray-MK-3-Crossfire-1-8oz-Gel-OC-Spray-/181355084332?hash=item2a399afa2c:g:HaEAAOxy7odRyu0~
I did not have to break my hand hitting him! Over in 2 seconds Smiley And I mean OVER!
Make sure the expiration date is long.....mine is 2021...you and your "significant other" will be very well protected, I promise. Test fire it....it holds plenty Smiley
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Steve F
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« Reply #208 on: May 16, 2016, 08:40:56 PM »

I think that's where I ended up setting my subs too.

I also assume that printing a pepper spray incident would not be a good thing.

steve

PS: Don't break your hand, how would you solder?
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Ed Schilling
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« Reply #209 on: May 16, 2016, 10:05:29 PM »

Hey Steve, no worries.......self defense is cool. Had I been trying to rob the liquor store I'd probably not mention it Smiley

Get the women in your life Sabre Crossfire..all y'all. With luck they'll never need it. It could save their life if they do need it. I was stunned at how insanely effective it was. It also causes no real lasting damage so there is no reason to threaten anyone with it. If you think they need to be sprayed, just do it and walk away, you won't even need to run.

Many people will not carry a gun......we are not them. Keep in ind the police carry guns AND Tasers (not "stun guns") AND pepper spray. Of the 3,  a woman that does not shoot is best served with pepper spray IMO and if it's Sabre Red Crossfire she's well protected.
Ed




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