DIY Sub

[Timmy245]

thanks isiberian

ok so that shows me how to make the box and recommends the amp and rock wool etc, but is there other things i should know such as the driver im guessing an infinity kappa 12" driver but is there other things i should buy ??

thanks for your help as i dont know much about this topic

thanks

 

[Timmy245]

hey

so im now thinking about making two of these 12" infinity kappa builds and using them together as a stereo pair but (sorry for what may sound like a stupid question) will they both be able to run off my receiver denon avr-789 ??

thanks

 

[lsiberian]

hey

so im now thinking about making two of these 12" infinity kappa builds and using them together as a stereo pair but (sorry for what may sound like a stupid question) will they both be able to run off my receiver denon avr-789 ??

thanks

No that's an intelligent question. You will need an external amp to drive any subwoofer period. Most commerical amps use plate amps, but for the kappa project I suggest a Behringer EP2500 For this you will need to convert your sub pre-out signal from RCA to XLR, but there are numerous ways to do this.

1 Behringer ep2500 can drive 2 Kappas fairly easily.

For your crossover I suggest a DCX 2496 from Behringer as well. There are numerous ways to set this up. If you have an external amp you can actually use the DCX for you whole system, but you can also use it just for the subs.

Though the box is designed for a specific driver. all the Infinity Perfect 12.1s have a very similar design and response. So you could probably use any of them effectively. I have gleaned all this from reading through the thread on the project. Which I recommend. If you are willing to learn how to build the boxes then you could set yourself up for DIY speakers in the future and teach yourself a trade. It's easy to do with the right tools, patience, and caution.

Remember stupid people assume they have the answers. Smart people ask for help. That's why they know more. Engineers ask questions a lot.

 

[Timmy245]

thanks very much isiberian

i would be lost without you answering all these questions, with the behringer ep2500 does that connect to the main receiver ?

thanks again!

 

[lsiberian]

thanks very much isiberian

i would be lost without you answering all these questions, with the behringer ep2500 does that connect to the main receiver ?

thanks again!

I suggest you connect it with a crossover, but you probably could connect it with the receiver. You will need a cleanbox that converts from RCA to XLR.

It may take a little work, but this way has many benefits.

Longer upgrade time which spreads out the excitement. More things to buy. Means you get to open more packages.

Learning curve. After a DIY project you will be much more knowledgeable of how stuff works.

Cheaper prices.

 

[Timmy245]

sorry isiberian

but theres one thing im just not getting, as i stated before i have a denon 789 this receiver has no pre-outs but can i still build these 2 subs connect them to the behringer amp then the behringer amp to my receiver .. somehow :S

all gets a little confusing for me

thanks again

 

[alexwakelin]

sorry isiberian

but theres one thing im just not getting, as i stated before i have a denon 789 this receiver has no pre-outs but can i still build these 2 subs connect them to the behringer amp then the behringer amp to my receiver .. somehow :S

all gets a little confusing for me

thanks again

Your Denon has a subwoofer preout. If you are planning on building 2 subs, you can use a y-cable to send a signal from the subwoofer preout to each channel of the Behringer amp. As said before, the ART Cleanbox is the best device to boost the signal and convert from RCA to XLR.

 

[TLS Guy]

thanks isiberian

ok so that shows me how to make the box and recommends the amp and rock wool etc, but is there other things i should know such as the driver im guessing an infinity kappa 12" driver but is there other things i should buy ??

thanks for your help as i dont know much about this topic

thanks

You have a bunch of sub options here, but a kappa perfect 12 build is a good rewarding project.

 

[Timmy245]

ok thanks everyone i think i understand how it all connects up now as i start this project ill post pics along the way here

i will probably be asking for a ton of help along the way so i apologise in advance lol

thanks again !

 

[lsiberian]

ok thanks everyone i think i understand how it all connects up now as i start this project ill post pics along the way here

i will probably be asking for a ton of help along the way so i apologise in advance lol

thanks again !

Why the need to apologize. We wouldn't be here if we didn't want to help. Just be thankful not apologetic. Again smart people ask. Stupid people hurt themselves.

 

[Timmy245]

ok guys so just so i know im on the right track is this what i should be ordering for these 2 12" infinity kappa builds
http://www.djwarehouse.com.au/cat/index.cgi/shopfront/view_product_details?category_id=&product_id=306479
http://www.djwarehouse.com.au/cat/index.cgi/shopfront/view_product_details?category_id=&product_id=575572
and obviously the 2 drivers but would someone be helpful enough to point me to a place where i can order the drivers and obviously they would need to deliver internationally as i live in australia but other than that are the two items in the links what i need (along with the drivers) and do the prices seem roughly right ? also with warranty on these products what do i do if something goes wrong with them? just cop it and replace it
thanks for all the help once again
Tim

 

[annunaki]

Whoa!

I paid $256.00 and $279.99 for my EP2500 and DCX2496 respectively from www.zzounds.com. Use their price match link with sellers from Amazon. Good deals to be had there (zzounds) with excellent customer service!

 

[Timmy245]

ohh sorry i shouldve mentioned this was australian money so the prices will be more then anywhere else (almost anywhere)

 

[lsiberian]

ohh sorry i shouldve mentioned this was australian money so the prices will be more then anywhere else (almost anywhere)

It's been a while since I've been down under, but has the currency gotten that bad?

I would think you could find a bit better price. I suggest you look around a bit more to see if you can find a better deal.

 

[lsiberian]

Whoa!

I paid $256.00 and $279.99 for my EP2500 and DCX2496 respectively from www.zzounds.com. Use their price match link with sellers from Amazon. Good deals to be had there (zzounds) with excellent customer service!

Does seem high, but Australia has a bit higher prices on some stuff. I think shipping to Australia may be pretty high too.

 

[lsiberian]

ohh sorry i shouldve mentioned this was australian money so the prices will be more then anywhere else (almost anywhere)

You are up very late. You are a true audiophile staying up all hours of the night to find the stuff.