Need a preamp for my sub - diyAudio
Go Back   Home > Forums > Source & Line > Analog Line Level
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

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 2nd April 2011, 02:28 PM   #1
diyAudio Member
Join Date: Feb 2011
Location: Malaysia
Thumbs down Need a preamp for my sub

I have an amplifier with these characteristics:

POWER RATING at 1KHZ with 0.1* THD = 200W/ 8 ohm, 260W /4 ohm
IMD= *0.008*
THD at 200W into 8 ohm *1 KHZ= *0.005*
THD at 200W into 8 ohm *20 HZ....20 KHZ= *0.05*
FREQUENCY RESPONSE [at 50W/8ohm, *0...-3dB]= 1.5 HZ.....125 KHZ
SLOW RATE with input filter= 20V/uS
=SIGNAL TO NOISE RATIO [at 1W/8ohm] *99dBA
= DAMPING FACTOR at 8ohm [15HZ...25KHZ] 160

and I use it after a low pass filter ( Linkwitz-Riley cross over calculator ) as below:
Click the image to open in full size.

R= 8.2K
C= 100nf
2C= 220nf
Cut off frequency is around 150Hz

I'm very willing with this filter and amplifier ( with my headphone output of my computer ), my only problem is that when I use this sub woofer with another sound source that has a lower output than my PC
So I need an excellent preamplifier so I can use it before my low pass filter, so I can get a great sound from my sub as I do with my PC


Last edited by badboy6120; 2nd April 2011 at 02:31 PM.
  Reply With Quote


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
Running a tube preamp into a solid state preamp? Pckid212 Solid State 5 6th January 2013 10:12 PM
Tube Preamp Popping on Source Input Change (?) / 6DJ8 Preamp On Chip Amps Travis Clarke Tubes / Valves 3 16th October 2008 04:52 AM
Guitar Preamp = MIC Preamp = other preamp ,,are they all same? Paswa Instruments and Amps 1 12th March 2008 05:16 PM
twisted pear Preamp/other suggestions for Preamp kit LukeDuke Chip Amps 1 1st February 2008 09:57 PM
Electret mic preamp - will phono preamp work? darthmullet Analogue Source 6 12th October 2007 07:32 AM

New To Site? Need Help?

All times are GMT. The time now is 01:11 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2