#1490366 - 12/09/08 06:38 PM
alpine iva-w505 bass weak?
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richie Fellner
SD Ralph Wiggum
Registered: 05/03/08
Posts: 22
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i recently got the iva-w505 installed with the imprint ktx-h100 and not so sure if I am going to keep the setup because I'm not satisfied with the sound. I used the software to automate the sound, but was not completely satsified with the result; clean and clear highs but no bass response as the sub sounds weak and spongy. Also, the crossovers they chose make my fronts distort. So I decided to just tune it manually, but no matter what i do the bass sounds like [censored]. I have subs up all the way up on the head unit, equalizers high on lower frequencies and still not good bass. Don't get me wrong, i like bass but Im no bass head or anything, jsyt want to even out the sound. My other pioneer unit i had no problems getting great sound quality and my jl 10w6 on the jl 500/1 hit really nice before. I also have polk sr6500 components in the front powered by alpine pdx. What am i doing wrong? it is to the point that i might just put back the pioneer cuz it sounds like [censored]. I dont want to mess with the sub amp but i guesss i could mess with the prior settings.......any suggestions would be greatly appreciated? anyone else have problems with alpine headunit....was my first
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#1490403 - 12/09/08 08:42 PM
Re: alpine iva-w505 bass weak?
[Re: richie Fellner]
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keep_hope_alive
Snooch to the Nooch
SD I chew on Mike Tyson's ear
Registered: 24/04/07
Posts: 8816
Loc: Quad Cities, IL
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if you put the pioneer back in and change nothing else and bass performance is restored, then you know the issue is with the head unit.
what is the sub output level set at on the W505?
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#1490462 - 13/09/08 03:11 AM
Re: alpine iva-w505 bass weak?
[Re: keep_hope_alive]
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richie Fellner
SD Ralph Wiggum
Registered: 05/03/08
Posts: 22
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i don't know too much about audio and how it works and all that, but i do know what sounds good...i play guitar and have a passion for music, and [censored] ain;t sounding right. Pioneer sounded really good with minimal tuning, and thought this would be an upgrade. My plan tomorrow is to mess around with the sub amp settings and gains. I got it installed at a respectable place, and he even thought the bass sounded weird too, but i had to go to work and left it at that, told him i would mess with it and figure it out. I doubt they ever messed with the gain settings on my amp during installation, but maybe they accidently moved some settings? its not just the output that is low, the bass sounds really dull and spongy------like a shitty sub would sound, but the highs sound really good. when you perform the automatic tuning, they allow you to adjust the bass and that setting was all the way up at 7 from -7 to 7---bass weak. When i manual tune it, all the low frequencies are high 63 hz-+6 150 hz +6 -bass a little stronger but still weak and spongy. Don't exactly know what you mean about the sub level output, but from -15 to 15 the sub is on 15. One thing i did notice which was really off what the balance and fader. When i change settings to the right speaker, the left speaker level increases, and vice versa. Front and rear work just fine. Respectable installers???? could this cause any problems or no?
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#1490470 - 13/09/08 06:52 AM
Re: alpine iva-w505 bass weak?
[Re: richie Fellner]
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keep_hope_alive
Snooch to the Nooch
SD I chew on Mike Tyson's ear
Registered: 24/04/07
Posts: 8816
Loc: Quad Cities, IL
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you have a wiring issue. stop playing with the settings and check over every connection behind the HU, at the amps, and at the speakers. make sure you have proper polarity, make sure the subs aren't out of phase. check over the amplifier gain settings and crossover settings. make sure you don't have a high pass and low pass crossover on the sub cancelling out.
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#1491940 - 16/09/08 01:34 AM
Re: alpine iva-w505 bass weak?
[Re: keep_hope_alive]
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richie Fellner
SD Ralph Wiggum
Registered: 05/03/08
Posts: 22
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well i had a chance to mess with bass amp settings and got it to sound alot better. On my previous pioneer HU i did not have to use any of the amp settings to shape the bass, just used the pioneer HU for eq and all that. The weird thing about it is that when i turn on the defeat setting on the HU of the alpine is when it sounds the best( i guess defeat is alpine's original settings before any tweaking)...when i turn it off and try to mess with the eq and xovers it doesn't make much of a difference and actually sounds a little worse. When i used to tweak the pioneer settings, each settings seem to make a big difference--on the parametric EQ which i was using, a little change on the frequency bands made a noticeable diffirence but not on the alpine. even the xovers-when i chnage from 63 to 80 to 100 i can even really tell but on the pioneer it was obvious-63hz would make my fronts distort a little and 80 was the g spot. alpine seems to not make a difference. anyways i am now pretty satisfied with the sound quality, sounds pretty close before the change but i still think the pioneer sounded just a little better. I will continue to play around with the sound, and give imprint another go. still haven't got to time correction yet....
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#1492018 - 16/09/08 06:52 AM
Re: alpine iva-w505 bass weak?
[Re: richie Fellner]
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keep_hope_alive
Snooch to the Nooch
SD I chew on Mike Tyson's ear
Registered: 24/04/07
Posts: 8816
Loc: Quad Cities, IL
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if you want, draw a diagram of how it's wired and what is connected. that might give us some ideas.
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#1492499 - 16/09/08 04:19 PM
Re: alpine iva-w505 bass weak?
[Re: keep_hope_alive]
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richie Fellner
SD Ralph Wiggum
Registered: 05/03/08
Posts: 22
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sorry i don't know [censored] about electronics and wiring and all that so thats why i got it installed by pros. But the only thing they changed was swapping the iva-w505 for the pioneer fh-p800bt. I doubt this will help, because i dont know how they wired it or anything and what cables they used but they recommended to me the cables and all that...seemed to have been fine......i have an alpine pdx2.150 powering my front components which are polk sr6500's 6 1/2's which is located under my passenger seat and the cables go through the carpet under the seat where the power things went......the crossovers are also mounted right next to the amp under passenger seat. Under the drivers seat is a jl 500/1v2 powering a 10w6v2. The wires and cables also go through the carpet the same way as the speaker amp. my sub is located right behind my drivers seat rear firing on the ground with what little room i have in my 2007 toyota tacoma. Are you familiar with settings and all that on the jl 500/1v2? maybe you can help me set the propersettings ???? sorry, description so vague and probably unhelpful but i really have no clue how it was wired ....
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#1492646 - 17/09/08 12:34 AM
Re: alpine iva-w505 bass weak?
[Re: richie Fellner]
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keep_hope_alive
Snooch to the Nooch
SD I chew on Mike Tyson's ear
Registered: 24/04/07
Posts: 8816
Loc: Quad Cities, IL
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me things you have a mis-match between the wiring configuration and settings.
i followed your description, there is plenty of information in it. good job.
you need to make sure that they used the subwoofer output from the head unit, and that the sub output is turned on. you can check this by adjusting the sub level on the head unit - it should only change the volume of the subwoofer. if that works then they used the right output and the wiring between them should be good.
the settings you'll want to adjust would be associated with the crossovers and phase. really, it would be a flat guess without listening to it. if you can read the settings, tell us what they are at, or take some really good pics of both amps and their settings. we like pictures 
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#1495770 - 21/09/08 08:51 PM
Re: alpine iva-w505 bass weak?
[Re: Sweet dome]
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JDAccord
SQ Rookie
Team SoundDomain
Registered: 09/07/08
Posts: 201
Loc: Chattanooga, TN
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I kind of skimmed through your posts, but one thing to note is on alpine decks, they have a subwoofer ouput level. This goes from 0 to 15. At level 15, the deck is sending a full 4v to the amp, so it's okay to max it out. Note this is different from a bass level in the eq. Make sure that is set first.
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