Hoffman Amplifiers Tube Amplifier Forum

Other Stuff => Cabinets-Speakers => Topic started by: AZJimC on March 13, 2009, 07:50:23 am

Title: Radio Shack PA Speakers
Post by: AZJimC on March 13, 2009, 07:50:23 am
I was over at radio shack, and they had these little boxes, with a 15" and a horn in them, for something like 83 bucks. I just got a 20 channel Powered board, stereo with 2 600w amps. They say that is into 2-4ohm or 1-2ohm load, I think the 2 ohm is bridged, anyway, it looks like this would take 4 of these little boxes, and might do a good job. Any info on these speakers, or horns? I assume they are china made, but no Idea really, about the speakers or the horns.

Anyone have experience with these, or know of other similar priced units? I'll even take used, in Tucson area, if they are cheap.

Jim
Title: Re: Radio Shack PA Speakers
Post by: Frankenamp on March 13, 2009, 10:05:22 am
(speaking as a former RS store manager)

Those are built down to a price. On most retail speakers, figure the build cost to be 1/10th of full retail.
A 15 +horn (probably made in the same factory as Gem Sound- notoriously shoddy pa stuff) is probably priced to sell off sale at about 120. (thats $12 worth of speaker) 4*83=332. You can do better.

It's no secret I hang out at a certain speaker forum that is more or less dedicated to horn-loaded speaker design. That being said, If you want something in the 350-400 range, Build a pair of Omni-10's. Go to http://www.speakerhardware.com/omni_102x_dlx_kit-KOmni10DLx.php  and Leland will get you set up. 184/ea (beta loaded) 202/ea (S2010 loaded) or 269/ea (2510 loaded)  for everything except the 1/2" BB plywood (or any good quality plywood with 5 or more equal plies- no chinese plywood) and the plans. If you want cheaper, the MCM 10 will get you started. Leland is an Eminence distributor, and can get you the best prices there are.
Title: Re: Radio Shack PA Speakers
Post by: AZJimC on March 14, 2009, 01:08:08 am
That is a good thought, I have found a manual for the board, and it will take 4ohms per each of 4 jack, OR 2ohms each side, for 600W per, Lovely hard ass sand! So, it would take as many as 8 of the 8 ohm boxes to load it up all the way. a I get cheap, but it's gotta beat the 4x12's I am using now, Celestions are ok for a certain range, but not PA. I even thought about just building a couple of horn boxes, and I know I could get much better quality for the money, by building, but just plugging in isn't a bad thing either. Are there better boxes than the RS "Professional" speakers lol, for the same or less money elsewhere?

Later,
Jim
Title: Re: Radio Shack PA Speakers
Post by: Dynaflow on March 14, 2009, 10:47:32 am
 These of course are more pricey and I know how money is thats fo' sho', but this is what our band uses although these are like 400 watts handling, but I'll tell ya, the first time you heft one of these gems up on pole stands you'll thank God for Neo speakers and plastic cabinets. They sound great too for the price. If you get bass heavy you'd need subs to really kick the bottom end, but vocals and mic'ing guitar amps they work very well.

http://pro-audio.musiciansfriend.com/product/Peavey-PR-15-NEO-Passive-Loudspeaker?sku=601426

They have the 12's on sale for 170.00 a piece right now:

http://pro-audio.musiciansfriend.com/product/Peavey-PR-12-NEO-Passive-Loudspeaker?sku=601424&src=3WWRWXGB&ZYXSEM=0

Free shipping (not) I like how they do that (heavy or irregular shaped objects)  ::)

Regards,

Dyna
Title: Re: Radio Shack PA Speakers
Post by: Frankenamp on March 14, 2009, 05:17:56 pm
Hartley Peavey has a good rep and most of his stuff is pretty good. Those are a knockoff of the JBL  (Eon) stick speakers, and as such are a copy of a poor design. They are certainly better than the RS boxes, but a pair of JBL's or Peavey stick-speakers would be owned by a pair of O-10's. Try to get a spl chart from either one. Bass Players love 'em, http://billfitzmaurice.net/phpBB3/viewtopic.php?f=3&t=7812  and they work equally well as full-range PA speakers.  http://billfitzmaurice.net/phpBB3/viewtopic.php?f=12&t=2344  O-10's are roughly 100dB efficient at 1 watt @1 meter. Add 20 dB for 100 watts (120dB) another 3dB for 200 watts (123 dB) above this power compression sets in ... if that isn't loud enough, build another pair, and add 6 db. O-10's can be stacked in a line array- stick speakers cant.

It's your money. If it was me, I'd build, and have the satisfaction of knowing that I can take any of the big boys out behind the proverbial shed and whup'em like they never been. Ain't that half the fun of building your own? Making sawdust... pushing electrons through a vacuum (or sand) We do it because it's there, and we like doin' it. When it drys out and warms up, you'll know that your tools are all wanting you to come out and play! ;) O-10's are one of the fastest and easiest builds, no complex angles- designed to be (and has been)  built with just a circular saw.

Note on duratex: one guy did a veterans benefit gig and right in the middle of setup- the sky's opened up. His whole pile of DR200's & T39's were soaked. after the gig they cleaned up with a wet rag like new. I'm not sayin' go out and gig in the rain, but I'd like to see a set of Eon's take that and keep playing...