Anthony_I

Phoenix Gold Octane R12d, Opinions?

Ok i just bought one of these speakers, And i really like it, I've yet to get a box for it and that will be next week. But ive heard it and i know it sounds good. The only thing i cant find out is the frequency Response of it.
does anyone know what its freq. response is? or a way that i can find out (Using test tones or something?)

Anyone else use one of these? What are other opinions of this speaker? (Used for sub woofer)

Here are the T/S Params for it.

Brian Bunge

Anthony,

What do you want to know that we haven't already told you in the DIY forum? It's frequency response, I'm assuming you're more concerned about it's low frequency response, is completely dependent on the enclosure it's put in. In general though, the lower end is usually somewhat limited by the driver's Fs, which is 23.64Hz. In a ported enclosure it's not advisable to tune much below Fs as the driver becomes unloaded and will bottom easily.

So you've already got the driver, you apparently already know what box you're going to use it in. What else is there to ask?

Brian Bunge
RAD Home Theater

Anthony_I

Yeah, your right, i guess this is a pointless post.
I didnt realize it at the time.

Namely i suppose what im trying to figure out is the response of the speaker.

My stereo has an output (for its sub channel) of 30Hz - 2kHz
I wanted to find out if the speaker can handle this range of frequencies. Im pretty sure it can handle the 30Hz part of it, but i dont know what its upper limit is. Basically i wanted to use a speaker that can recieve the entire range that is being fed to it.
It seems that the freq. response info of the speaker itself isn't published anywhere or known by anyone.

Brian Bunge

I wouldn't worry about the upper limit of it. I wouldn't even attempt to use it above 80-100Hz.

Brian Bunge
RAD Home Theater

Anthony_I

why so?

The amp that i will buy to drive it has a crossover bypass switch installed so that i can choose to bypass the XOver and allow all frequencies to sent to the sub (up to 2kHz anyway) or i can use the XOver and set it to max and have anything above 200Hz "Crossedover"
it is adjustable from 40Hz - 200Hz.

Brian Bunge

The XO bypass switch is only useful when you have a receiver or pre/pro that has a XO built in for the sub. It's best if it's a 4th order (24dB/octave) at 80Hz or lower. If your receiver doesn't have a XO for the sub then set the sub amp's XO somewhere around 80-100Hz. You don't want it higher than that or it will be easily localizable and you'll also hear people's voices coming from the sub.

Brian Bunge
RAD Home Theater

Greg_R

Not to mention that the sub will be horrible at reproducing those higher frequencies.

Then you have the wrong driver for that application.

The reason you have drivers of different sizes is because each is optimized to cover a particular frequency range. A tweeter handles the highest info, a midrange handles the middle (the most sensitive area of human hearing) and the sub drives the low end (80-100hz or below).

You will not be able to hook 1 driver up to an amp and expect full range playback.

Greg
My DVD Collection

Anthony_I

The XO bypass switch is only useful when you have a receiver or pre/pro that has a XO built in for the sub. It's best if it's a 4th order (24dB/octave) at 80Hz or lower. If your receiver doesn't have a XO for the sub then set the sub amp's XO somewhere around 80-100Hz. You don't want it higher than that or it will be easily localizable and you'll also hear people's voices coming from the sub.

Brett DiMichele

Anthony,

Like you have been told numerous times.. No large driver
will play up to 2Khz well (not any driver with any amount
of excursion anyway) Sure there are some old school paper
cone, accordian surrpound drivers (Electro Voice, Advent
etc) that can play that high but they also will barely
nail 30Hz there just is no way to do both effectively..

Why do you feel you "need" it to play up to 2Khz anyway?
Your mains should play down to 80Hz and the sub should
play up to 80Hz it's really that easy and simple, that is
the proven crossover method for integrating Sub and Mains
and it's a little flexible for example I cross over at 100
Hz instead of 80.. But you don't want to go any higher than
say 120Hz (most subs don't even do 100Hz well anyway).

Click the logo to see my site!

Brett DiMichele
brettd@westol.com

\"Tawk to da hand!\"