Can anyone recommend a DIY LCR combo to go with dual 12vq subs?

A

armstrr

Junior Audioholic
I am looking for an LCR combo, and a horizontal orientation fits my need as it either need to be below (much too low for the back seats) my screen or above.

can any of you in the know point me to some other good designs that would fair well placed horizontally like above?

i have a full woodshop, so basic cabinet building isn't a problem. i have no electrical background or speaker building for that matter, so i would prefer to purchase any required crossover necessary.

i have recently purchased the materials to build 2 diy infinity kappa 12dvq as spec'ed at audioholics, i plan on crossing over at 80hz, so the mains/center don't have to go too low.

also, this is for 100% hometheater use. i have paradigm adp studio v.2 for the sides and paradigm titans for the backs. i recently blue a driver in the front (paradigm studio monitors)

thanks for pointing me in the right direction.
 
TLS Guy

TLS Guy

Seriously, I have no life.
I am looking for an LCR combo, and a horizontal orientation fits my need as it either need to be below (much too low for the back seats) my screen or above.

can any of you in the know point me to some other good designs that would fair well placed horizontally like above?

i have a full woodshop, so basic cabinet building isn't a problem. i have no electrical background or speaker building for that matter, so i would prefer to purchase any required crossover necessary.

i have recently purchased the materials to build 2 diy infinity kappa 12dvq as spec'ed at audioholics, i plan on crossing over at 80hz, so the mains/center don't have to go too low.

also, this is for 100% hometheater use. i have paradigm adp studio v.2 for the sides and paradigm titans for the backs. i recently blue a driver in the front (paradigm studio monitors)

thanks for pointing me in the right direction.
First of all we need to know how much you plan to spend.

The next issue, is that you can not use off the shelf crossovers unless they are part of a total deign kit. Crossover have to be specific to the drivers involved and driver layout. A speaker using pre built generic crossovers will sound awful.

I posted a highly cost effective series of speakers, based on some inexpensive but very good drivers.

You can use the I cu.ft. MTM design on its side, but you will have the lobing issue common to all these type of center speakers.

The only way to avoid that is to keep the center speaker vertical, build a design using a coaxial driver, or design a center three way, with the tweeter above the mid. This latter will still have a lobing issue, but it will be moved to a much lower frequency.

If you are unable to build your crossover, we could come to a price for me to build them for you, or you could contract with Madisound to build them for you. They offer a crossover build service.
 
A

armstrr

Junior Audioholic
thanks tsl. that looks like a great family!

i've done some more thinking and for right now i need to get those subs built and do lots of renovating to please the wifey before i consider taking on another project (that and its reallllll cold in the garage right now!!) i think i will try to replace the blown woofer. i just sent Paradigm the serial #, so i'll be curious what kind of price i will be quoted for a replacement (or two if i should change the one in the other speaker...)

if that turns out to be cost prohibitive, is it possible to send the good woofer somewhere for testing to see if a good 6.5" alternative can be found as a drop in replacement? or should the crossover be sent instead/with?

this is the compact monitor which was built from 88-94. it has an aluminum dome tweeter. these were the precursor to the studio 20s.

thanks again.
 
Last edited:
TLS Guy

TLS Guy

Seriously, I have no life.
thanks tsl. that looks like a great family!

i've done some more thinking and for right now. i need to get those subs built and do lots of renovating to please the wifey before i consider taking on another project (that and its reallllll cold in the garage right now!!) i think i will try to replace the blown woofer. i just sent Paradigm the serial #, so i'll be curious what kind of price i will be quoted for a replacement (or two if i should change the one in the other speaker...)

if that turns out to be cost prohibitive, is it possible to send the good woofer somewhere for testing to see if a good 6.5" alternative can be found as a drop in replacement? or should the crossover be sent instead/with?

this is the compact monitor which was built from 88-94. it has an aluminum dome tweeter. these were the precursor to the studio 20s.

thanks again.
See if Paradigm can recone your woofer. That would be cheapest.

Forget about trying to change woofers and crossovers. You will not have the same speakers, and it will be a disaster and more expensive then building speakers from scratch. Every speakers signature is as unique as a thumb print.
 
A

armstrr

Junior Audioholic
i just inspected the speaker. when i first looked at it, i thought the butyl surround looked pristene. upon closer inspection, it is ripped.

is this a difficult repair or something the factory (if willing), should do? i notice that the kits that are available use a foam surround. if i end up doing it myself, would using foam instead of butyl rubber be a problem or mistake or are buty surrounds available?

thanks again!
 
TLS Guy

TLS Guy

Seriously, I have no life.
i just inspected the speaker. when i first looked at it, i thought the butyl surround looked pristene. upon closer inspection, it is ripped.

is this a difficult repair or something the factory (if willing), should do? i notice that the kits that are available use a foam surround. if i end up doing it myself, would using foam instead of butyl rubber be a problem or mistake or are buty surrounds available?

thanks again!
Changing to a foam surround will change the frequency response of the driver drastically.

If you want to do it yourself, see if paradigm will provide you with the parts.

You will need the correct surround, a new dust cap, voice coil shims and the correct adhesives.

Rubber surrounds are harder to get off the cone and chassis, because solvents don't penetrate it. If Paradigm will do this repair for you, I would have them do it.
 
A

armstrr

Junior Audioholic
just got off the phone.

dealer recommended a local guy, but he is in florida for the next 2 weeks...

called paradigm direct and they will recone for $40 or i can buy a replacement for $80 Cdn ($32/$64US) plus shipping. i explained that only the rubber was damaged, but the response was...we re-cone anyway.

if i send it in, would it make sense to send the other one in due to its age?

for the record, i have the crossover in my denon 2809 set at 80hz.

thanks again
 
Last edited:
TLS Guy

TLS Guy

Seriously, I have no life.
just got off the phone.

dealer recommended a local guy, but he is in florida for the next 2 weeks...

called paradigm direct and they will recone for $40 or i can buy a replacement for $80 Cdn ($32/$64US) plus shipping. i explained that only the rubber was damaged, but the response was...we re-cone anyway.

if i send it in, would it make sense to send the other one in due to its age?

for the record, i have the crossover in my denon 2809 set at 80hz.

thanks again
I would have Paradigm do it. $40 is a very good deal. I would just send the broken driver and leave the other one alone.
 

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