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Old 24th May 2004, 04:52 PM   #1
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Unhappy Help i'm on a budget!!!!

Hi everyone. I am new to speakers and stuff and I am building my own sub. What i am having truoble with is finding the right sub speaker. Can you guys help? I want one under 40 , nice and loud, give a good vibration, good omff and be able to hear it from all round the niebourhood.

I have seen this one: http://www.maplin.co.uk/products/mod...moduleno=36764 is that any good?

This is what's going to be driving the sub: http://www.st-and.demon.co.uk/Audio/armstrong.html It is th 621 amp
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Old 24th May 2004, 09:42 PM   #2
sreten is offline sreten  United Kingdom
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http://maplin.co.uk/products/module....moduleno=36764

is a link that works, its a car subwoofer and hard to recommend.

Your amplifier link is confusing, is this your main amplifier
or an amplifier lying around you want to use for the sub ?

sreten.
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Old 24th May 2004, 09:44 PM   #3
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Your link doesn't work. You may want to check out Eminence or Peerless. Not sure if it's in your price range or not. Many of the drivers listed at Maplin look like they have high Fs.
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Old 24th May 2004, 11:36 PM   #4
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40W won't give you much volume...
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Old 25th May 2004, 08:43 AM   #5
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I am using the amplifier to drive the sub and the input for the amp will come from my sourround sound. I know one of you said that 40w isn't going to give me much power but it is in the old scale and i am going to link up two of the outputs to make 80w (has anyone tried thiss before?)

By the sound of the replys i don't think the car sub is to hot. Do you guys have any other ideas or links to "better" speakers to use?

Thanks for the help so far
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Old 25th May 2004, 08:47 AM   #6
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Also i really want that thump ringing through the house during the beats in my music and explosions in a film.

Thanks for any help

Also i have that WinISD programme for my PC how reliable is that for making the cabinate?
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Old 25th May 2004, 09:52 AM   #7
sreten is offline sreten  United Kingdom
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The simplest way of using both amplifier channels is using
two drivers, in parallel for high volume, or isobaric for a
small sub with more modest volume capability.

Though if you add say 0.33R series resistors to each channel
you could probably drive a 4 ohm subwoofer with the channels
in parallel. Do not connect the channels directly together.

Could use two of these isobaric (clamshell) ~ 60L tuned to ~ 28Hz :

http://www.bkelec.com/Diy/BSB12100.htm

sreten.
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Old 25th May 2004, 04:54 PM   #8
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So for each output have a seperate speaker??????????

Sorry for being a bit ignorant but i'm new to this.
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Old 25th May 2004, 07:24 PM   #9
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Quote:
Originally posted by sreten
The simplest way of using both amplifier channels is using
two drivers, in parallel for high volume, or isobaric for a
small sub with more modest volume capability.

Though if you add say 0.33R series resistors to each channel
you could probably drive a 4 ohm subwoofer with the channels
in parallel. Do not connect the channels directly together.

Could use two of these isobaric (clamshell) ~ 60L tuned to ~ 28Hz :

http://www.bkelec.com/Diy/BSB12100.htm

sreten.
That waterfall plot is hilarious.
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Old 25th May 2004, 08:05 PM   #10
sreten is offline sreten  United Kingdom
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Quote:
Originally posted by Dannyball
So for each output have a seperate speaker??????????

Sorry for being a bit ignorant but i'm new to this.
Yup. Other options are a dual voice coil woofer, paralleling the
channels as detailed and theorectically bridging the channels
but I don't think the latter would work well.

Paralleling the channels (via 0.3 ohm resistors) and a 4 ohm
12" speaker reflexed in a say 2cuFt ( 55/60L) cabinet looks
about the easiest, but I don't know a source of good cheap
subwoofer drivers in the UK.

sreten.
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