Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Need help with a new sub, a couple of n00bish questions
Need help with a new sub, a couple of n00bish questions
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 4th October 2008, 02:05 AM   #1
alfa147x is offline alfa147x  United States
diyAudio Member
Join Date: Oct 2008
Question Need help with a new sub, a couple of n00bish questions

I'm trying to figure out how to figure out what size amp i need for this woofer

Rockford Fosgate P1S415:
15" 4-ohm subwoofer
molded polypropylene woofer cone with poly-foam surround
17-gauge steel bend frame
power range: 50-200 watts RMS (400 watts peak power)
frequency response: 24-250 Hz
sensitivity: 87 dB
top-mount depth: 6-5/16"

Polk Audio MM1240D:
power range: 100-360 watts RMS (180 watts RMS per coil)
peak power handling: 720 watts
frequency response: 27-200 Hz
sensitivity: 88 dB
top-mount depth: 4-5/8"
sealed box volume: 0.88 cubic feet

im planning on making a ported enclosure

for this kinda driver i only need a 250watt amp?

I bought both $50 each in box so no complaints also im using one for my car but that takes back seat for the one for the home theater


Theile/Small parameters:

the wall with the tv to the kitchen is about 30 feet

Thanks a bunch from a confused little friend
  Reply With Quote
Old 4th October 2008, 07:07 AM   #2
dangus is offline dangus  Canada
diyAudio Member
Join Date: May 2004
Location: Vancouver Island
Power isn't critical; there's a lot of leeway for a home theater application because the bass is usually intermittent. Not a like a car or party situation where it may be pounding at full volume for extended periods.

200 watts seems like a nice amount to aim for. Don't overlook used "pro" amps; they generally give you more watts per buck than a plate amp. Keep your eyes open at thrift stores, pawn shops and yard sales, if you can be patient. Or watch eBay for auctions near you; shipping costs may deter people from bidding.
  Reply With Quote


Need help with a new sub, a couple of n00bish questionsHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Greetings and a couple of questions Sasquatch Tubes / Valves 18 10th February 2007 08:49 PM
couple of questions slogan2112 Multi-Way 0 27th June 2004 08:38 PM
a couple questions slackerbob Solid State 1 12th August 2003 02:25 AM

New To Site? Need Help?

All times are GMT. The time now is 08:59 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio