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Anyone personally used any of the light weight Class D with switching power supplies for subs? I'm looking for an amp for a sub I built. Needs to be bridgeable and about 500/700 watts into 8 ohms bridge mono..There was a time when these amps were not recommended for subs. They couldn't keep up.I'm interested in the Crown xls1500. Can get it at MF for $340 which is a great price & it also has a built in variable xover.No matter what the price though if it doesn't do the job it's not worth buying.
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Some one has got to have an opinion!
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John,
I started to answer earlier but was interrupted.
It's hard to go wrong with Crown. I have used them in my racks when I was doing live sound and all the better fixed installations tended to have them, too. They are just about indestructible. If MF has a decent return policy you have nothing to lose by giving it a try.
Another brand worth consideration is Peavey. I was dragged kicking and screaming to the conclusion that they are very good and cost effective. They are also American-made, if that is important to you.
HTH,
R.
"My primary musical instrument is the personal computer."
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I've used Crown as well years ago when they were Class AB and had a big old heavy power supply transformer. When the light weight amps first came out they were Class D with switching power supplies. They were horrible for low end especially things like kick drum. This is well documented. All the lit you now read tries to state that this has been overcome. I wonder is all.I'm still sort of laying low for now & am not in immediate need so have time to research more.
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Repairin' a LOT of the Crowns the past couple years, John. Under warranty, they often blanket replace whole circuit boards, after warranty the only option is sometimes the same, although they can be repaired at component level as well, but Crown has been taken with the idea of amp networking via standard network cabling and all that jazz, my thoughts are that something that complicated is not called for just to run a subwoofer at the gig, YMMV.
QSC amps may cost a wee bit more, but I think it is worth it if you are looking for topline workhorse stuff. Often sighted in use on pro tour stuff these days.
Of course, you might find a good deal on another brand, as well, for example, I picked up a Samson awhile back and can't complain. It isn't class D, but is a fine example of mature class AB and features a toroidal power transformer which makes for a rather compact rackmount. Of course it is likely a bit heavier than the equivalent Class D with switcher, but I couldn't pass up the price...
--Mac
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Quote:
Repairin' a LOT of the Crowns the past couple years, John. Under warranty, they often blanket replace whole circuit boards, after warranty the only option is sometimes the same, although they can be repaired at component level as well, but Crown has been taken with the idea of amp networking via standard network cabling and all that jazz, my thoughts are that something that complicated is not called for just to run a subwoofer at the gig, YMMV.
QSC amps may cost a wee bit more, but I think it is worth it if you are looking for topline workhorse stuff. Often sighted in use on pro tour stuff these days.
Of course, you might find a good deal on another brand, as well, for example, I picked up a Samson awhile back and can't complain. It isn't class D, but is a fine example of mature class AB and features a toroidal power transformer which makes for a rather compact rackmount. Of course it is likely a bit heavier than the equivalent Class D with switcher, but I couldn't pass up the price...
--Mac
It seems all the co. putting out these low cost low weight amps are suffering. Even Carvin that has been a good choice for those on a budget have terrible reviews.
Mac are you saying that the lightweight QSC GX series have better ratings and history then the Crown. I was originally contemplating the QSC.Both have built in xover but the Crown xover is more flexible. It's variable. Qsc is fixed at 100Hz which for a sub is were I'd set it anyway.
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John, Never used the Crown, but have a QSC PLX1804 running our small PA. Couldn't be happier. If you're looking at the GX series, you can type in your sub specs in this page and match the sub to the QSC amp. http://qscaudio.com/products/amps/advanced_amp_selector.htm If you decide on the QSC, PM me - I know a QSC dealer in California who might me able to give you a better price than a retailer. Regards, Bob
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My issue is limited funds.I'm looking at either the Crown or QSC.
I have an adequate amp that now powers the tops. I was looking for something just for the sub. Can't bridge the QSC GX amps.
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Quote:
My issue is limited funds.I'm looking at either the Crown or QSC.
I have an adequate amp that now powers the tops. I was looking for something just for the sub. Can't bridge the QSC GX amps.
John,
Have you considered buying used? You can get a lot of bang for your buck, and might be able to get more amp for your limited funds. Here is a link to the PSW Marketplace. There are some good deals on used gear there.
http://srforums.prosoundweb.com/index.php/f/14/0/
Regards,
Bob
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Ask sales and support questions about Band-in-a-Box using natural language.
ChatPG's knowledge base includes the full Band-in-a-Box User Manual and sales information from the website.
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Update Your PowerTracks Pro Audio 2024 Today!
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Handy flash drive tip: Always try plugging in a USB device the wrong way first? If your flash drive (or other USB plug) doesn't have a symbol to indicate which way is up, look for the side with a seam on the metal connector (it only has a line across one side) - that's the side that either faces down or to the left, depending on your port placement.
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Thank you to everyone who has contributed!
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