the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

my jbl bp600.1


Post ReplyPost New Topic
< Prev Topic Next Topic >
snyderman5 
Member - Posts: 32
Member spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: December 16, 2004
Location: United States
Posted: August 09, 2005 at 5:58 PM / IP Logged  
Alright the amp mentioned above has gain settings of 4volt to 250mvlt. My alpine puts out 4 volts. While I am trying to set my gain with my hearing protection and my 60 hz sine wave I hear no distortion at all. So can I just turn it all the way clockwise to the 4volt setting or am I missing some kind of distortion that my lawn knomes can hear? Sub is a re sx 12" I know its underpowered but I have another amp to put in as soon as I finish my other box for the other sub.
stevdart 
Platinum - Posts: 5,816
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spaceThis member consistently provides reliable informationspace
Joined: January 24, 2004
Location: Pennsylvania, United States
Posted: August 09, 2005 at 6:39 PM / IP Logged  

The 4 volt setting on the gain dial would be to the far LEFT, or minimum gain position.  Turning the gain clockwise toward a lower input is telling the amp to adjust its power output curve to receive a smaller amount of voltage input.  The higher the voltage input, the less you have to turn the gain.

The deck may put out 4 volts at certain frequencies, but the bass freqs may be less.  60 Hz may come through at 1 to 2 volts, I couldn't tell you for sure.  You seem to be doing the gain setting correctly, as long as the tone source is recorded at 0db amplitude (pro recording) and the deck is at its greatest level of clean output.  If that is all good, then you are correct in turning the gain.  Bear in mind where you're turning it to, though, because it is true that a clipped signal can be very difficult to detect by ear.  If I were in your shoes and were turning the gain full clockwise like that, I would stop and redo the gain setting with a DMM, measuring voltage output.

And be careful playing a sine wave for very long at high volumes through the speaker(s).  It will quickly burn up a voice coil.  While doing the listening-type gain setting, you might also try using some well-recorded music sources too.  That will allow you longer play time for a more relaxed listening test.  Walk away, too, because low sub freqs can often be heard better at a distance.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Sorry, you can NOT post a reply.
This topic is closed.

  Printable version Printable version Post ReplyPost New Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

  •  
Search the12volt.com
Follow the12volt.com Follow the12volt.com on Facebook
Thursday, October 31, 2024 • Copyright © 1999-2024 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer