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Cheap way to power passive subwoofer: will this work?

post #1 of 5
Thread Starter 

Hi Audio/Video experts!

 

I am in that familiar position of having replaced the receiver that came with my dedicated speaker + subwoofer system (Sony DAV-HDX265) only to learn that the new receiver (Sony STR-DH540) doesn't offer a powered subwoofer signal. I've already ordered a Yamaha SW215 to power the bass but it seems like a shame to separate the subwoofer from its family (the other speakers) and given that the new receiver is 5.2 (i.e. it has two subwoofer outputs), I'm still interested in powering it.

 

I've seen many parts-express themed threads suggesting installing a subwoofer panel amp onto the passive sub but I'm neither interested in spending that much money or time on this a project.

 

Will this $15 amplifier from Pyle (PHA15) do the trick? Reviews say it can take the signal from an MP3 play and amplify enough to play loudly through 15" speakers. Would it be feasible to

 

(1) convert the subwoofer output signal to the required 3.5mm female jack

(2) connect the passive subwoofer to the PHA15 amplifier

(3) hear decent bass through the passive subwoofer?

 

Before I order the PHA15, I'd like to get any feedback or advice you can offer.

post #2 of 5
Quote:
Will this $15 amplifier from Pyle (PHA15) do the trick?
IMO, no. According to the product page, the amp is rated at 15W RMS. It will allow your sub to produce some sounds, but not "decent bass".
post #3 of 5
Thread Starter 
Firstly, thanks for your reply!

I decided to purchase the Pyle PCA2 80W amplifier for $18 to see if it will work for this purpose. I will update the forum on the results next week.
post #4 of 5
Thread Starter 

IT WORKS! And it works far better than I had expected. All for $18.95! I bought the:

 

Pyle PCA2 PRO

 

The ones listed as used and fulfilled by Amazon are <$20 and I assume refurbished. Mine was in a brand new package.

 

(1) I connected a mono RCA cable from the receiver's subwoofer output to the PCA2's right input

(2) then connected the free cable wires from the passive sub-woofer (left over from the SONY BRAVIA DAV-HDX265) to the PCA2's wire clasps

(3) set the trebble to 0, bass to the highest levels, and volume to 50%

(4) next I plugged it into the power and tested it out.

 

 

It's far better/louder than it was in the original DAV-HDX265 system. When I turn the volume up it's as or more loud than the Yamaha sw215 which is way too loud for my purposes.

 

I wish I had seen a post like this one before I purchased the Yamaha. Now that I have the Yamaha, I intend to use it for everyday usage and to flip on the PCA2 powered sub-woofer whenever I throw parties (5.2).

 

My only reservation is that there is no automatic standby on the PCA2.

post #5 of 5
Congrats on an excellent (inexpensive) solution. biggrin.gif
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