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Old 9th April 2006, 10:00 PM   #1
jonnyq is offline jonnyq  Costa Rica
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Default 1st diy computer speakers!

Hi guys! Im new to this forum.
Ive been a car audio enthusiast for quite some time now. However, Ive got no clue how home audio works...

Last week I purchased a pair of computer speakers... Logitech Z-4.
They sound crappy to say the least. I am really dissapointed at them.\

So Id like to build my own computer speakers.
I have a pair of Dayton RS180 7" speakers from an old car audio project. They are unshielded, 4 ohm version.

Could I use this speakers?
What else would I need? amp? crossover? tweeter? sub?

Im really lost here guys, any help is greatly appreciated.

Id like to keep it under $150 if possible. I can get the Klipsch promedia 2.1 for around that amount, and Ive heard they are great speakers.

Please advice!
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Old 9th April 2006, 10:15 PM   #2
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As a bare minimum, you'll need a robust little tweeter with an Fs at about 1K, a capacitor and probably a coil for 12dB slope. The published FR of the Dayton says extension to 2,200Hz only so best to keep it below that.

If you understood what I just said then I'll continue. If not, we'll go back.
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Old 10th April 2006, 12:25 AM   #3
jonnyq is offline jonnyq  Costa Rica
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As a bare minimum, you'll need a robust little tweeter with an Fs at about 1K, a capacitor and probably a coil for 12dB slope. The published FR of the Dayton says extension to 2,200Hz only so best to keep it below that.

If you understood what I just said then I'll continue. If not, we'll go back.

Thanks for the reply.

I didnt understant a thing you said. I guess it has something to do with the crossover?
If possible, I woould like to purchase pre made crossovers. I dont think I have the tools or skills to get into detailed electronics.

As for the tweeters, I have heard good things about seas, dayton, and some neo3 planar?
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Old 10th April 2006, 03:42 AM   #4
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JUST going out on a limb here

why nto cross it to one of those 3" tang band fullrangers? they have very usable extension till quite high, sound quite good and if you wanted you could even cross at like 500hz or 250 with first order networks(im assuming that with a first order crossover the tang band has enough excursion that the lows that do leak through wont really deteriorate sond, and that a first order low pass at 250 or 500hz on the 7" dayton would have the output down enough by the time breakup becomes a problem) if not maybe a second order on the woofer and a first order on the fullranger.

ive heard very good things about first order crossovers in terms of efficiency dynamics and neutrality. i think its dunlavy that only uses first order networks and theyre supposed to sound phenominal.

clear this plan up wil cal first though, for he is far more knowledgeable than i.
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Old 10th April 2006, 04:11 AM   #5
clem_o is offline clem_o  Philippines
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Default Re: 1st diy computer speakers!

Quote:
Originally posted by jonnyq
So Id like to build my own computer speakers.
I have a pair of Dayton RS180 7" speakers from an old car audio project. They are unshielded, 4 ohm version.

Could I use this speakers?

Are you going to put the speakers anywhere near your computer monitor (and is it a CRT or LCD?)

IF you're using a CRT and IF you're going to wind up putting those speakers anywhere near - suggest you go and just buy that Klipsch. Magnetic shielding isn't easy to do...

Cheers!
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Old 10th April 2006, 05:47 AM   #6
jonnyq is offline jonnyq  Costa Rica
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warning: this could sound pretty stupid.

So I already have the Dayton RS180. These speakers could handle 2000hz and down.
I also have a spare set of infinity reference 6002i coaxials. Could I pair these drivers with the daytons to handle the upper frequencies (2000hz and up).
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Old 10th April 2006, 05:47 AM   #7
jonnyq is offline jonnyq  Costa Rica
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This is just and idea.

is it okay if speakers overlap frequencies?
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Old 10th April 2006, 05:47 AM   #8
jonnyq is offline jonnyq  Costa Rica
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Ive got a 19" Viewsonic LCD. Is shielding going to be an issue?
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Old 10th April 2006, 06:19 AM   #9
cotdt is offline cotdt  United States
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if you're using a 7" woofer, it won't be considered computer speakers anymore. they would be called bookshelf speakers.
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Old 10th April 2006, 09:21 AM   #10
clem_o is offline clem_o  Philippines
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It should be fine with an LCD.

You'd be better off using just one Infinity coaxial, with the dayton handling the lower frequencies if you wish (or, you could just stick to the Infinitys alone!).

The frequency range that each of those drivers can handle do overlap - which is a good thing. What you *do* have to put in is a crossover. Either design one or buy one, with the crossover frequency set to something below 1KHz. 500Hz should be fine. Or even lower if you wish.


Cheers!
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