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Replacing woofer with sub?


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Is it a good idea to replace a woofer in a speaker cabinet with a subwoofer to increase the lower range. The woofers in standard cabinets obviously play quite a high range probably up to 2 or 3 hundred hz depending on the speaker, a sub could obviously produce 2 or 3 hundred hz but a sub may have difficulties producing high frequencies accurately if you are also asking it to produce something low like 30 hz at a high level. Also your spl would likely go down in the 200hz range due to the higher moving mas the sensitivity is likely lower. And of course you are limited to the power handling of the crossover as well. Am i correct in my assumptions. Should i just leave it alone it really does sound very nice already they are pioneer cs 607 I traded for my cervin vega vs 100.

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Id like to replace it with these but cant seem to warrant the price the speakers are rated at 50 watts i think theyll take more but not the 450 like these are rated at. And I don't really know if this would increase my low end it is a ported box with literally 3 sq inch of port area it is tuned really low based on the area.

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What I have found from using a sub for a woofer is the mid range is less. Like if your eq is a smile.

91 C350 Centurion conversion ( Four Door One Ton Bronco)

250A Alternator (Second Alternator Coming Soon)

G65 AGM Up Front  / Two G31 AGM in Back

Pioneer 80PRS

CT Sounds AT125.2 / CT Sounds 6.5 Strato Pro component Front Stage

CT Sounds AT125.2 / Lanzar Pro 8" coax w/compression horn tweeter Rear Fill

FSD 5000D 1/2 ohm (SoundQubed 7k Coming Soon)

Two HDS315 Four Qubes Each 34hz (Two HDC3.118 and New Box Coming Soon)

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If the speakers you got are the old 607's with the HF lens (looks like a stack of cooling fins) that woofer will likely be low passed about 1.2 to 1.8KHz, not 300Hz.

Not many transducers that will go all the way up to 1.8KHz and all the way down into the thirties. A 607 chipboard cabinet won't like going into the thirties either. Most true subwoofers have become extremely directional above 150Hz, which is the polar opposite of what you want with these near field loudspeakers.

Add a sub in another cabinet below them to extend the LF without removing anything that resembles MF.

Cheers,

Mick

Work;
DiGiCo D1 Live / MIDAS Heratige 1000 / MIDAS Venice
Meyer Sound CQ-1's, CQ-2's, PSW-2's
RAMSA Monitor Amplifiers
P.Audio Monitors
BSS OMNIDRIVE and Soundweb
DBX 231 and Klark Teknik DN360 EQ's
RCF TT22A
RCF ART320

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Yeah i guess i was asking more in general as well. I still wouldn't see a problem putting in that pioneer i put a link to in the cabinets though it has a sensitivity of 105 db at 1 khz so i could likely produce 2k + but the speakers sound great so i don't see a reason to does any body how knows more about old systems than me know of these just wanted some opinions on the cs 607's

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