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

Multi-Way Conventional loudspeakers with crossovers

2 general sub questions, please
2 general sub questions, please
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 21st March 2004, 02:59 PM   #1
Misa A. is offline Misa A.  Russian Federation
diyAudio Member
Join Date: Dec 2003
Location: Moscow
Question 2 general sub questions, please

Hello, everybody
One more time I am bothering you with my rookie questions.

I am going to build my first active subwoofer with a Peerless 12 XLS. I want it to be small and suitable for both home theater and music (mostly).
Before I begin with my project, I would like to know opinion of experienced subwoofer builders on the following simple questions:

1. Is it better to isolate a plate amp (which is a well known Parts Express 250 W) in a separate volume, or I can place it in the same volume with the driver? I am not concerned about possible leakage or box rigidity which I can take care of, but safety of electronic components and PCBs under a huge air pressure inside a box.

2. Since I am very much concerned about its dimensions, I am inclined to make my subwoofer a passive radiator box of approx 35 liters volume, following Peerless reference design. The question is: can such a system produce accurate bass, good for music applications, or will it sound too loose?

Thank you in advance for answers,
  Reply With Quote
Old 21st March 2004, 03:33 PM   #2
av_affected is offline av_affected  United States
diyAudio Member
Join Date: Apr 2003
Location: Great Southwest
Plate amps are made to mount directly in the main enclosure. There's no reason to make a separate enclosure. The air pressure generated inside the sub will have no affect on the amp. Just make sure you take the volume displaced by the amp into account in your box volume calculations.

Passive radiator subs are quite popular. Yes, their group delay is higher than sealed systems and usually higher than similar ported systems, but they can be quite musical. If you're trying to get deep bass in a fairly small box, a passive radiator system is often the only alternative to a ridiculously-sized port or absurd amounts of EQ in a sealed system.
  Reply With Quote
Old 21st March 2004, 03:57 PM   #3
Guss is offline Guss  Canada
diyAudio Member
Guss's Avatar
Join Date: Jun 2003
Location: Montreal
If you decide to mount the plateamp in the main enclosure, make sure you mounted it properly and tightly screwed the plate to the baffle. Some electric component may rattle at certain freq and its very anoying.
  Reply With Quote
Old 22nd March 2004, 05:54 AM   #4
Misa A. is offline Misa A.  Russian Federation
diyAudio Member
Join Date: Dec 2003
Location: Moscow
Thank you very much, gentlemen
You gave me good answers and I will go this way.

  Reply With Quote


2 general sub questions, pleaseHide 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
ER Audio ESL III Kit, and ESL questions in general wixy Planars & Exotics 27 29th July 2014 11:14 PM
General car audio questions for a newB rocko1290 Car Audio 33 27th August 2006 10:37 PM
general chip questions Ropie Chip Amps 2 11th July 2004 09:05 AM
SOZ amp general questions MEGA_amp Pass Labs 4 27th October 2003 02:53 PM

New To Site? Need Help?

All times are GMT. The time now is 01:51 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