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Author Topic: Old Peavey SP1 cabs, what's the deal?  (Read 34120 times)

Art Welter

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #10 on: August 09, 2010, 04:25:36 pm »

Jason James wrote on Sun, 08 August 2010 12:37

Hey thanks for the input guys. I'm still getting more and more calls, people wanting to buy them. So far I have a guy that wants to drive 3 hours (one way) and pay a hundred bucks for them. Sounds crazy to me.

I might just have to hook them up once before I sell them, just for fun.

They are loud, don’t have any highs or lows, and are fairly peaky in between.

For  shop speakers, or a noisy drunken club scene, they work fine, assuming they are working .

Get an adapter and plug your Ipod in directly, if you haven’t hooked them up already.  You will be surprised how loud they are, if they are working.
If they are not working, you should say so in your ad.
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isaac anthony

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #11 on: October 15, 2010, 03:01:40 am »

Bringing this back up because I was wondering...

Fella trying to sell 4 of them for $400.  I haven't seen what condition they are in, but I'll probably say yes if they've all got black widows in good shape...

I've been looking at posts about these cabs and from what I've read they've got a "hole" in freq response from 500-800hz.  Now here's where I'm a little confused, because if I'm reading the specs on the black-widow correctly, Peavy is saying 40-2khz for them.  So why not change the x-over freq from 500 to 800, seems like a relatively simple thing to do, my head can't wrap around the physical cabinet not allowing a higher freq to come out of the cabs ?

Thanks for any response!

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Ivan Beaver

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #12 on: October 15, 2010, 08:12:01 am »

isaac anthony wrote on Fri, 15 October 2010 03:01

Bringing this back up because I was wondering...

Fella trying to sell 4 of them for $400.  I haven't seen what condition they are in, but I'll probably say yes if they've all got black widows in good shape...

I've been looking at posts about these cabs and from what I've read they've got a "hole" in freq response from 500-800hz.  Now here's where I'm a little confused, because if I'm reading the specs on the black-widow correctly, Peavy is saying 40-2khz for them.  So why not change the x-over freq from 500 to 800, seems like a relatively simple thing to do, my head can't wrap around the physical cabinet not allowing a higher freq to come out of the cabs ?

Thanks for any response!



I am not sure about the later cabinets-but the early ones all used a stamped frame Eminance driver-not Black Widowns.

The reason their is a hole is that the low feq is horn loaded and it doesn't go real high.  And the High freq driver (22A) doesn't go that low.

Raising the crossover would not do anything to fix that.

But for what they are-they were a pretty impressive cabinet for the price-back in the day.

For what it is worth, I tried an expirement with a friend of mine on his pair.  I swapped out one of the eminance woofers with a premium JBL (2225) and the other eminance loaded cabinet ran circles around the JBL loaded one.

The reason was that the cabinet was designed around the Eminance driver and the JBL was not designed for horn loading (especially that horn) so it did not work as well.

Then we put them in regular ported boxes and the JBL outran the Eminance.

With horn cabinets- you cannot "improve" the sound just by putting "better" drivers in it.  The drivers have to work in that particular design.
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isaac anthony

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #13 on: October 15, 2010, 04:35:58 pm »

Thanks for the info, Ivan.

So I found this on another forum.

http://i199.photobucket.com/albums/aa306/smoothnads/gear/HC/live%20sound/fh1.jpg

Looks like the horn does decent up til 700-800hz and gets pretty bad around 1k.

I wish I knew the context of the graph and how they set up the x-over to get those results, because that actually looks fairly decent to me.  I would probably tri-amp the setup and get some decent subs to get some good low-end.

But yeah, I think if they have the black-widows in decent shape I'll probably pick them up...
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Mark Meagher

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #14 on: October 15, 2010, 08:13:49 pm »

Isaac,
The OP referenced the SP-1. The graphic you posted is for the FH-1. Two different animals. Just wanted to bring that to your attention so that you know for sure while you consider your purchase.

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isaac anthony

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #15 on: October 15, 2010, 08:22:09 pm »

Mark Meagher wrote on Fri, 15 October 2010 19:13

Isaac,
The OP referenced the SP-1. The graphic you posted is for the FH-1. Two different animals. Just wanted to bring that to your attention so that you know for sure while you consider your purchase.




Fair enough.

To clarify, the seller said what he's got is (4) "MFX-1 high frequency horns and a pair of FH-1 folded horns".

Which I thought were the individual components to the sp1 ?

That's why I put the graph up.  According to the other info presented about the sp1, the MFX go down to about 800hz, which looks like it would work fine, if that is the correct SPL for the FH1...
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Mark Meagher

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #16 on: October 15, 2010, 08:29:40 pm »

Isaac,
To clarify...the low speaker component of the SP-1 is the FH-1. The graph that you posted is for the FH-1 alone. If you were looking for a graph on the SP-1, the one you posted could serve to further confuse as it is not a response for the entire SP-1 box. I hope that makes sense.  Laughing

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Life isn't a destination, it's a trip. Just keep your hands and feet inside the ride.

isaac anthony

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #17 on: October 16, 2010, 12:01:04 am »

Mark Meagher wrote on Fri, 15 October 2010 19:29

Isaac,
To clarify...the low speaker component of the SP-1 is the FH-1. The graph that you posted is for the FH-1 alone. If you were looking for a graph on the SP-1, the one you posted could serve to further confuse as it is not a response for the entire SP-1 box. I hope that makes sense.  Laughing




I understand.  I'm a little confused as to how much of a "hole" there is in the freq response of the entire configuration if the MPX don't start rolling off up until 700-800hz.  It would be nice to have a graph for the system as a whole...
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Douglas R. Allen

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #18 on: October 16, 2010, 07:01:29 am »

The low freq. section of the SP-1 is of course the FH-1 low freq enclosure. The FH-1 / MFX-1 were a split version on the SP-1.
The FH-1 is a horn loaded Low Freq. box with a low freq limit of 58hz. Run the box below this freq and the driver unloads in the enclosure. Running the risk of excursion problems. A low cut of 58hz would be recommended. The fh-1 is more of a higher output low freq box than a sub.

http://www.peavey.com/assets/literature/manuals/80301013.pdf

http://www.peavey.com/assets/literature/manuals/80301017.pdf

I had the first sp-1 enclosures and I don't remember a big drop in output around 500/800 hz. The crossover point was 500hz between horn and low mid. The MB-2 was the midrange box designed to go with the mfx-1/fh-1 combo. I believe it was called Project 2.

http://www.peavey.com/assets/literature/manuals/80301016.pdf

The SP-1 and mfx-1/mb-2/fh-1 are some boxes that I would like to see eq'ed and time aligned with smaart to see what they could really do.
With a proper sub section they would be quite loud with just a few watts.


Douglas R. Allen

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David A. Parker

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #19 on: October 16, 2010, 08:43:26 am »

regardless what all the specs say, how it sounds is what is important. FH1's sounded good with kick drum. They wouldn't handle techno, with it's synthesized low frequencies, but they were fine for rock music, bass guitar and kick. Back then Peavey didn't have to worry so much about how the specs looked on paper, people just wanted something to sound good and go loud with whatever amps were available then. The big horns caused a bit of a drop above 12k as I recall when I would RTA mine, but there again, a nitpick would miss the "air", but the vocals still were crisp and audible.
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