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post #1 of 15 Old 05-25-2012, 11:20 AM - Thread Starter
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Guys I am in a contest with a friend to build bookshelf speakers.
First off no neither of us are any good but it is still happening.
I do not want to build my own crossovers and I have heard that the ones from partsexpress are not great. can anyone give me idea on good place to by crossovers from? They will be two way speakers. drivers are not yet decided on.
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post #2 of 15 Old 05-25-2012, 11:46 AM - Thread Starter
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post #3 of 15 Old 05-25-2012, 11:50 AM - Thread Starter
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post #4 of 15 Old 05-25-2012, 11:52 AM
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What is the contest for? If you are not building your own crossovers it sounds like you are not trying to design your speakers. Designing the crossover is the main effort in creating a DIY speaker design.

Are you both going to use the same drivers and crossover and just see who can build the better box? If that is the case, I would suggest you go with an existing design that includes a crossover. If you provide more info we can point you to several existing designs that should work.

You need to provide:
  • max cost for 2 speakers (for drivers and crossover, or for everything)
  • approx size of the speaker cabinets you want
  • location (against a wall, away from the wall)
  • usage (music, home theater system, indoors, outdoors, etc.)
  • any other constraints you think may impact the design/build (for example, if you have limited tools available)

Chris

"It hurts to admit when you make mistakes - but when they are big enough, the pain only lasts a second."
--Despair, Inc. "Regret"

My AviaTrix TM Build
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post #5 of 15 Old 05-25-2012, 12:08 PM
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If you dont want to build a proven design, at least have madisound measure and simulate a crossover for you

http://www.madisound.com/services/leap.php

You just have to pick from drivers they carry.
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post #6 of 15 Old 05-25-2012, 01:39 PM - Thread Starter
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Hmm that madisound seems like a good deal
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post #7 of 15 Old 05-25-2012, 01:51 PM - Thread Starter
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The competition is who can build a better sounding bookshelf in 2 weeks
Any drivers we want from parts express with woofer under 8" and total cost for woofers and tweets under 250
cost of crossover is 100max

everything else as in box and such price does not matter.

How bad are the crossovers they sell on partsexpress?
I was looking at a crossover like this
http://www.parts-express.com/pe/show...number=260-142
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post #8 of 15 Old 05-25-2012, 01:59 PM
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Bad. Go with a proven design
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post #9 of 15 Old 05-25-2012, 02:03 PM - Thread Starter
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a proven design?
I do not want to copy another speaker.
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post #10 of 15 Old 05-25-2012, 02:38 PM
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Good luck! Just try and find drivers with a smooth response, that have matched sensitivities, and impedances at the x-over point
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post #11 of 15 Old 05-25-2012, 02:54 PM
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Crossover for under $100 might be a tall order... I was spec'ing out the price on the MT speakers that John Marsh built on HTG and the cost of the crossovers was more than the speakers. IIRC it was almost $200 for the crossover parts alone. FWIW, I got one of the MTM speakers from PE using the dayton RS180s and RS28A and their crossover and it sounds amazing. As long as it's the right crossover for the speakers that are used I bet they would be acceptable...

Here's the thread I'm referring to: http://www.htguide.com/forum/showthread.php4?t=13154
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post #12 of 15 Old 05-25-2012, 03:53 PM
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Newer designs use smaller cheaper cross overs, if the designer puts thought into that. The modules use an insane cross over. $100 is lots for a 2-way xo, IMO. A recent design I did could be done for $30 in cross over parts. 1 inductor was it.
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post #13 of 15 Old 05-25-2012, 04:09 PM
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Quote:
Originally Posted by tuxedocivic View Post

Newer designs use smaller cheaper cross overs, if the designer puts thought into that. The modules use an insane cross over. $100 is lots for a 2-way xo, IMO. A recent design I did could be done for $30 in cross over parts. 1 inductor was it.

I've been pricing crossovers for Carody's builds and they do price out to well under $100 for 2-way crossovers.

To the OP:
I've been looking into doing the same, but it's not straightforward at all (quite the opposite). You'll need measuring equipment to get it right.
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post #14 of 15 Old 05-25-2012, 04:31 PM - Thread Starter
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Thanks for the info so far. I am gonna read some more threads on others builds.
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post #15 of 15 Old 05-30-2012, 05:56 AM - Thread Starter
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New question
The system will be hivi f6 woofer
hivi rt1.3 tweeter.

It will have a 2 inch aero port. But the issue is where to place the areo port?
I am not really sure there is room on the front of the box. Will placing it on the back sound bad?
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