Alpine Type - R "Rattle Fart"

[nauc 10+ year member]

hmmm...maybe? but would it be THAT loud inside the box? I guess maybe if it were long enough tinsel leads to slap the cone...but he said it happens at any gain setting, assuming the speakers don't motor a lot at low gains, that would make his problem go away.

gotta remember that its hitting the cone, which isnt inside the box

but like you said, it does it at lower volumes too

strange

 

[Kargo 10+ year member]

It looks like the spider comes up and touches the back bottom portion of the cone. A good way to describe the sound is if you touched a popcicle stick to the sub and it makes that "Clattering fart".

 

[nauc 10+ year member]

it's air leakage maybe, i've had mine screwed in with 5/8 of the screws for quite some time, and it has been doing it alot lately.

but the OG post said.... "I removed the subs and played them in open air and they still make the rattling."

 

[nauc 10+ year member]

It looks like the spider comes up and touches the back bottom portion of the cone. A good way to describe the sound is if you touched a popcicle stick to the sub and it makes that "Clattering fart".

maybe. maybe it wasnt aligned right to begin with.

you have 2 subs? do they both do this

 

[nauc 10+ year member]

i must have missed that part. But it's funny how i'm having the same problem with the same sub.

true........ maybe you guys just got a bad batch, idk

 

[nauc 10+ year member]

have you guys contacted Alpine just to see what they say

 

[shaneb 10+ year member]

It's not funny, it's annoying for me, I can't imagine how it would be if it were my sub...

So this talk of "breaking in" a new sub, is it true?

Anyone know if this can be an effect of not doing it?

I feel like I read a similar thread and someone said it's cause they didn't break their sub in....

 

[nauc 10+ year member]

It's not funny, it's annoying for me, I can't imagine how it would be if it were my sub...
So this talk of "breaking in" a new sub, is it true?

Anyone know if this can be an effect of not doing it?

I feel like I read a similar thread and someone said it's cause they didn't break their sub in....

i doubt that. is there a huge warning in the owners manual about breakin them in. dont think so, but i could be wrong

 

[shaneb 10+ year member]

i doubt that. is there a huge warning in the owners manual about breakin them in. dont think so, but i could be wrong

Yeah, like I said, I feel like I have heard that, but Never have I seen anything about that in a owners manual.

His wiring looks good. Assuming the picture is accurate.

How high are your gains set on a normal basis? Do you use Bass Boost? If you do, where do you set it at?

Edit: I know there are a lot of Type R gurus around here, one of them needs to chime in.

 

[Kargo 10+ year member]

My gain is set in the lower half, my bass boost is 0 and my Sub level is -1. I have tried all of these settings and I still get rattles.

 

[ashtrey1212 10+ year member]

That series of Alpine amp that you have isn't digital is it?

 

[Kargo 10+ year member]

That series of Alpine amp that you have isn't digital is it?

General

Gain Control: Continuously Adjustable Gain Control

Board Design: Dual Sided Glass Epoxy PC Board

Connector Plating: Gold Plated Input, Output, Power and Speaker Terminals

Crossover: Adjustable Low-Pass

Speaker-Level Inputs: Speaker Level Inputs

RCA Output: Gold Plated RCA Input Connectors

Power Indicator: Top Mounted Blue LED Power Indicator

Current Protection: Over-Current, Over-Voltage and Thermal Protection

Board Circuitry: STAR Circuitry

Power Supply Design: MOSFET Power

Power Supply: DC-DC PWM Power Supply

Thermal Control: Thermal Management Control

Channel Design: 1 Channel (Mono)

Amplifier Type: Class-D (Digital)

"Amplifier Type: Class-D (Digital)"

 

[ashtrey1212 10+ year member]

There isn't an input voltage switch anywhere on the amp is there?

 

[shaneb 10+ year member]

the thing with gains is, well mostly BB and stuff. is you add distortion into the system, if at some point in time you cranked those knobs up, there is a chance you blew the subs. Cause distortion too much distortion will blow speakers....

at least you got yourself a alpine guy in here. ashtrey, help him out!

 

[Kargo 10+ year member]

There isn't an input voltage switch anywhere on the amp is there?

No. Its just: Gain, Bass EQ, LP Filter, Speaker +/-, Power +/- and then RCA. Not to much to play with.