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Author Topic: Old Peavey SP1 cabs, what's the deal?  (Read 34060 times)

Ivan Beaver

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #20 on: October 16, 2010, 09:30:37 am »

David A. Parker wrote on Sat, 16 October 2010 08:43

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.

It wasn't the horns that were causing the HF dip-the drivers themselves didn't go that high.

But they were loud down in the vocal range-very durable-cheap to put dipahragms in and you could get replacements in just about any town across the US.  A very good thing for the average working band.  The 22A helped out a lot of bands.
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Danley Sound Labs

isaac anthony

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #21 on: October 16, 2010, 05:29:09 pm »

Douglas R. Allen wrote on Sat, 16 October 2010 06:01

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




Douglas, thanks!

I knew there had to be something missing.

So the MB2 was loaded with BW as well, but just because of how it was shaped and/or x-over it covered the "hole" that has been mentioned prior.

I actually am looking at these for mostly dance music and was counting on buying a couple SRX728s or similar to pair with the combo that has been offered to me.  Looks like I should keep my eyes open for the MB2's and ditch the FH1's altogether...
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David A. Parker

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #22 on: October 16, 2010, 06:09:45 pm »

isaac anthony wrote on Sat, 16 October 2010 16:29

Douglas R. Allen wrote on Sat, 16 October 2010 06:01

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




Douglas, thanks!

I knew there had to be something missing.

So the MB2 was loaded with BW as well, but just because of how it was shaped and/or x-over it covered the "hole" that has been mentioned prior.

I actually am looking at these for mostly dance music and was counting on buying a couple SRX728s or similar to pair with the combo that has been offered to me.  Looks like I should keep my eyes open for the MB2's and ditch the FH1's altogether...


I think the MB2 had a 12 in it. Of course, it was horn loaded, not a folded horn. The driver was forward facing but set back in the cab, with a horn in front of the driver. I'm sure if anyone did smaart measurements on one of the old project 2 setups, they'd find some serious alignment problems. But still, they sounded decent and were extremely efficient. I heard at least 3 concerts that used project 2 setups, and I owned a pair of SP1's, the later version that were separates.
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David Parker
Lost and Found Sound
http://www.lostandfoundsoundco.com/

Douglas R. Allen

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Re: Old Peavey SP1 cabs, what's the deal?
« Reply #23 on: October 16, 2010, 07:49:32 pm »

[/quote]

Douglas, thanks!

I knew there had to be something missing.

So the MB2 was loaded with BW as well, but just because of how it was shaped and/or x-over it covered the "hole" that has been mentioned prior.

I actually am looking at these for mostly dance music and was counting on buying a couple SRX728s or similar to pair with the combo that has been offered to me.  Looks like I should keep my eyes open for the MB2's and ditch the FH1's altogether...[/quote]

The MB-2 were designed to work with the FH-1's. Sad to say but they only go down to 250hz. Like the FH-1 ( "F"olded "H"orn) but in a direct horn loaded form the MB-2 ("M"id "B"ass) is horn loaded box and will unload below 250hz.  

A good setup would be.
Mfx-1 for highs 12k down to 1.2k
Mb-2 for 1.2k down to 250hz
Fh-1 for 80 to 250.
A good 2-18 box for 80hz and below.
A 4 way system.

Second best would be.
Horn 12k to 800hz
Fh-1 800hz to 80hz
Sub 80hz and below.
Stack you SRX subs upright and put the fh-1's and mfx-1 on top. I would just run 1 horn per 1 fh-1 sub stack.
Long ago I used a PL-800eq can on my Sp1s and they sounded fine. The FH-1s seemed to me *at the time* back in 1989 or so to sound ok crossover at 800hz.

You would have to have a crossover with good amount of delay but if you can get these boxes cheep it may be a good bar band,music playback system. Question is would you want to lug it with all the modern boxes out there? As an install this of course would not be an issue. Still it would be fun to hear one set up right.

As a side note there was a band in my town that had 4 of the mb-2s in a garage. I'll ask if they are still around. It has been a few years. They may have gone to a bonfire.

Douglas R. Allen
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