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

alpine spx 177a sound weak and poor


Post ReplyPost New Topic
< Prev Topic Next Topic >
snhtown 
Copper - Posts: 178
Copper spacespace
Joined: August 31, 2006
Location: United States
Posted: August 24, 2007 at 6:08 PM / IP Logged  
hey guys i just picked up these and put them in and they dont sound to great.  they sound weak as compared to the rear factory speakers. i have them hooked up to a 75x4 zapco amp,they are not briged.  when  i turn them up they kinda sound like they are distorting, but not, kindaweird, they just dont sound right.  i tried setting the gain low, 1/4, and i tried setting the gain at 1/2 and 3/4, either way they still have that sound.  i made sure the wires are correct.  im going to try playing with the x/o, i hear that the settings make big diffrences, has anyone installed these?  any pointers on setting the crossovers?  the amp has differnt settings like mono, stereo, would these have any impact on these speakers?  im just a newbie who likes to do things mysef so any thoughts would be great :)
dwarren 
Platinum - Nominee - Posts: 1,825
Platinum - Nominee spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: December 03, 2004
Location: California, United States
Posted: August 24, 2007 at 6:41 PM / IP Logged  

I assume you are using the passive x_overs that were supplied?

I would start with the high pass filter between 80-100 hertz on the amp with no bass boost, and your description of setting the gain clearly indicates you are not familiar with proper gain setting. This procedure is done once and left alone.

I would make sure there are no settings on, on the deck to further confuse the situation.

In addition, more info would be nice like, speaker location, model of radio, amp, etc.

sarcomax 
Copper - Posts: 276
Copper spacespace
Joined: November 09, 2005
Location: California, United States
Posted: August 25, 2007 at 11:52 AM / IP Logged  
I know you said that you have checked the wiring, but it sounds like you may have one of them wired up backwards. Disconnect one and see if your sound improves.
tcss 
Silver - Posts: 1,639
Silver spacespace
Joined: June 07, 2004
Location: United States
Posted: August 27, 2007 at 1:03 PM / IP Logged  
The shunts in the Alpine passive x-overs are very critical to the overall sound. They use passive time delay and phase shift to correct distance between the drivers and angle between the drivers. Follow the instructions to a "T" and they should sound better. I would also agree with Sarco and check the speaker phasing.
There is no such thing as free installation!
snhtown 
Copper - Posts: 178
Copper spacespace
Joined: August 31, 2006
Location: United States
Posted: August 30, 2007 at 2:59 PM / IP Logged  

well sarco i tripled checked the wiring and one wire was fliped floped, so i switched it and that sound is gone, so you were right, thanks....buuuut they sill sound really weak....so  hopefully after work tonite im going to play aroud with the sttings on the amp, im thinking that this amp just dose not put out enough juice to power these speakers.  

dwarren, your right im not really experiance whn it comes to settng the gain. i have a pioneer  dehp760mp and a zapco z250c4.  i left all the settings on the h/u at 0.  i am using  the x/os that came with the set.  the speakers are mounted in their stock locations, the mids closer by the  lower legs and the tweeter is mounted on top of the door close by where the door handel is.

dwarren 
Platinum - Nominee - Posts: 1,825
Platinum - Nominee spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: December 03, 2004
Location: California, United States
Posted: August 30, 2007 at 5:58 PM / IP Logged  
You need to set a high pass filter either on the deck or on the amp between 80 and 100 hertz, to start with. As far as setting your gain, trun the gain on the amp all the way down, proceed to turn the volume up on the deck to roughly 75% leave it then adjust the gain on the amp up until you hear distortion. If you are not familiar with this process, take your time and listen to familiar music. Once you have found the non-distorting level on the gain, back it down a hair and LEAVE it. You will have some give with the deck being at 75% for music that isn't recorded as well. Just always be conscious of the 75% number on the deck and be careful. Do this process with a well recorded cd, don't use the radio.

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, July 27, 2017 • Copyright © 1999-2017 the12volt.com Donate to the12volt.com Advertising Top of Page
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.
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Donate to the12volt.com
Top
the12volt.com spacer
the12volt.com spacer