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Chip Amps Amplifiers based on integrated circuits

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Old 7th May 2012, 06:32 PM   #21
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http://www.amazon.com/gp/aw/d/B000NG...6415493&sr=8-3
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Old 7th May 2012, 08:36 PM   #22
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decent stuff.
was hoping for a car sub driver, then tda7294 would had been more than enough.

If i was You i would not try to build a suitable amplifier.
Maybe it would be cheaper (and a lot safer) to purchase a used one.
And probably an EQ too, subs with 40 hz at -10 dBL require such thing to function properly.
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Old 7th May 2012, 09:15 PM   #23
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Originally Posted by Arty View Post
decent stuff.
was hoping for a car sub driver, then tda7294 would had been more than enough.

If i was You i would not try to build a suitable amplifier.
Maybe it would be cheaper (and a lot safer) to purchase a used one.
And probably an EQ too, subs with 40 hz at -10 dBL require such thing to function properly.
Literally just clicked on the TDA7294 datasheet as you posted this. I think if i decide to build my own amp i am going with the TDA7293(You can parallel/bridge better and it has a clip light). Thanks for the help! I may look into buying an amp or i may just buy an EQ and build my own amp. Also How do you know a 7294 would be more than enough? Im looking at using this to DJ.

Thanks!
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Old 7th May 2012, 09:36 PM   #24
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Im looking at buything 2 of these.

TDA7293 Parallel 255W Mono Power Amp Audio Assembled Board G020 | eBay

And then bridging them.
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Old 7th May 2012, 09:50 PM   #25
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If you read the owners manual it says 450 watts from 100 to 250 Hz. So at 40 Hz figure it is good for 72 watts. A 1500 watt amplifier should be able to blow it out in a few seconds.
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Old 7th May 2012, 10:00 PM   #26
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Originally Posted by simon7000 View Post
If you read the owners manual it says 450 watts from 100 to 250 Hz. So at 40 Hz figure it is good for 72 watts. A 1500 watt amplifier should be able to blow it out in a few seconds.
What amp is this for?
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Old 7th May 2012, 10:01 PM   #27
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usual cheap car subs that have nice stickers with (insert your favoured big number here) watts on them can't handle more than 100 watt. And there are a nother bunch that can handle more, but has less than 85 dBL sensitivity. (a more proper term for those is noisy space heater).

This is a decent PA speaker, and probably can handle high power, and has high sensitivity too.
Drawback is the verry narrow band it can reproduce.

Not familiar how the bridge+parallel mode works, or if those kits can do it.
Allso consider the price of a proper PSU for this setup.
And the needed heatsinking.
And speaker protection, and so on... Many things that factory made amplifiers have,
and at this level, are good to have.

I would stick with a used power amplifier in the range close to 1K watts.
Probably will cost less than a DIY attempt that may/may not work.

I think anything over 200 watt is not realy for DIY making.
And i can be prooven verry wrong
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Old 7th May 2012, 10:19 PM   #28
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Quote:
Originally Posted by Arty View Post
usual cheap car subs that have nice stickers with (insert your favoured big number here) watts on them can't handle more than 100 watt. And there are a nother bunch that can handle more, but has less than 85 dBL sensitivity. (a more proper term for those is noisy space heater).

This is a decent PA speaker, and probably can handle high power, and has high sensitivity too.
Drawback is the verry narrow band it can reproduce.

Not familiar how the bridge+parallel mode works, or if those kits can do it.
Allso consider the price of a proper PSU for this setup.
And the needed heatsinking.
And speaker protection, and so on... Many things that factory made amplifiers have,
and at this level, are good to have.

I would stick with a used power amplifier in the range close to 1K watts.
Probably will cost less than a DIY attempt that may/may not work.

I think anything over 200 watt is not realy for DIY making.
And i can be prooven verry wrong
You may be right. I may start looking into buying a used amp. It seems like a lot of work for such little wattage. I will also contact the ebay supplier and get the details on if they can bridge.

Thanks!
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Old 8th May 2012, 08:55 AM   #29
AndrewT is offline AndrewT  Scotland
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A PA speaker rarely has much if any low bass output. They are designed to be loud from mid bass upwards.
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regards Andrew T.
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Old 8th May 2012, 01:10 PM   #30
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Originally Posted by binsky3333 View Post
What amp is this for?
That is the spec's for the speaker you tagged. If you build a real 1000 watt amplifier it will toast the speaker just from a power burp.

Last edited by simon7000; 8th May 2012 at 01:12 PM.
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