Polk Audio db1240 DVC for Home Sub - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

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
Reply
 
Thread Tools Search this Thread
Old 19th May 2009, 01:02 PM   #1
neeraj is offline neeraj  India
diyAudio Member
 
Join Date: Dec 2005
Location: New delhi
Default Polk Audio db1240 DVC for Home Sub

Hi,
Im intrested to build a sub for my home audio.

I selected Polk audio car sub Model db 1240DVC.
please suggest if its a right choice.

Polk Audio - db1240 DVC

Specifications
Overall Frequency Response: 27-200 Hz
Nominal Impedance: Dual 4 ohms
Power Handling (continuous): 360 w
Power Handling (peak): 720 w
Efficiency: 88 dB
Voice Coil Diameter: Driver 2" (5.08cm)
Top Mount: 6" (15.24cm)
Bottom Mount: 6-3/4" (17.14cm)

Thiele/Small Parameters

Recommended Enclosure: Sealed/Ported/Bandpass
Resonant Frequency: 27.8 Hz
Qms 10.8
Qes .5
Qts .5
Vas 3.10 cubic ft/87.8 L
Cms 232.4 Micro Meters
Bl 9.2 Tesla Meters
Sd 80.6 sq in/520 sq cm
Xmax (linear) .728 inch/18.5 mm (peak to peak)
Mms 141.7 g


thanks
__________________
Neeraj
  Reply With Quote
Old 19th May 2009, 03:19 PM   #2
diyAudio Member
 
Join Date: Nov 2004
Location: Florida
As long as you put it in the proper size box, and have an amplifier than can drive it, than it will sound great for home audio.

What kind of amp are you using to drive this woofer? It's a dual 4-ohm speaker, so you either are driving 8 or 2 ohm depending on how you wire it. Make sure your amp can handle the load.

If you are fine with 27hz, it will do. IF you want lower frequency, then get a different woofer. It's up to you, but IMO it will sound good.

I used a Sony Xplod, and it worked great. Car subs are cheap and make good bass, and it's low enough bass that's good for HT with the right woofer.
__________________
You can call me Mad Professor, building crazy experiments in my Electronics Workshop
  Reply With Quote
Old 19th May 2009, 03:30 PM   #3
GM is offline GM  United States
diyAudio Member
 
GM's Avatar
 
Join Date: Jun 2003
Location: Chamblee, Ga.
Greets!

It's only the right choice if it gives you the performance you want in the max box size you can tolerate, so no one here but you can decide that.

That said, it's not ideal if you want to experience all of what a system capable of reproducing all of the BW the largest pipe organ symphony CDs offer unless your room has lots of gain, but otherwise should be fine in a sealed cab or TL if the XO point is < 100 Hz and preferably < 80 Hz.

If size and build complexity isn't an issue, then a tapped TQWT or better still, a tapped horn, could be a better choice.

GM
__________________
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
  Reply With Quote
Old 16th June 2009, 03:01 PM   #4
neeraj is offline neeraj  India
diyAudio Member
 
Join Date: Dec 2005
Location: New delhi
Dear sir
Thanks for reply.
Plz define relation between Fs & Tuning freq of box.
IMO 27hz is not bad for a small room.

Thanks
__________________
Neeraj
  Reply With Quote
Old 17th June 2009, 08:49 PM   #5
GM is offline GM  United States
diyAudio Member
 
GM's Avatar
 
Join Date: Jun 2003
Location: Chamblee, Ga.
Greets!

You're welcome!

The lower the tuning, the lower the driver's Fs ideally needs to be if not loaded with a maximum gain bandwidth (BW) compression horn.

GM
__________________
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Polk Audio MW8000 drivers pair Rockmore Swap Meet 2 24th September 2009 04:48 PM
Polk Audio RT-25i/CS245i/PSW250 system john65b Swap Meet 0 27th July 2008 12:37 AM
Measurements of polk audio speakers Ron E Multi-Way 0 25th February 2007 12:33 AM
Polk Audio Sub? samsagaz Subwoofers 4 22nd January 2007 02:51 PM
Polk audio 10A crossover problem argonrepublic Multi-Way 2 8th May 2005 05:41 PM


New To Site? Need Help?

All times are GMT. The time now is 06:43 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2