Amp and Sub Issues - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
General Tech Have a question that is not covered by one of the other categories? This is the forum for all other items not specifically covered in other categories.

LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 11-27-02, 03:35 PM Thread Starter
Timmeh's Avatar
Join Date: Aug 2002
Location: Newcastle, NSW
Age: 36
Posts: 2,922
Read Amp and Sub Issues

When a mate (Commodore owner no less) offered me his sub and amp for 150 bucks, I thought, yeah, a good chance to get some cheap base to start out with. He wasn't sure what condition they were in, they'd just been sitting in the back of his VT for a year.

So I checked them out, and discovered that the amp didn't work. No worries, 150 bucks for a hardly used boxed 12 inch Kicker Impulse sub and cables is reasonable, so I bought it. I went out and picked up a (note: these figures are from the box,so dont flame me if they are lower in reality, I expect they would be) 1400W Altec 3 channel amp (one 800W sub channel, two 300W speaker channels). The amp is quite large, has a remote so I can change the bass from the dash, so I thought, yeah, no worries. It's no competition amp, but it should do for now.

I plugged it all in, and found the level of base was extremely average, even with maximum base settings on the head-deck and amp. I was somewhat suprised, but put it down to the amp, or perhaps my level of expectation. Needless to say, I was suprised when there was a huge POP (I thought I'd blown a tyre), and my base disappeared. A quick investigation revealed two very blown apart fuses. Puzzled, I took the amp back to the Strathfield (Wagga), where they checked it out. They put it down to a fault in the amp, and swapped it over for a Sony 222, which had a higher RMS rating than the Altec amp.

The new amp installed, I couldn't even hear the sub before the car speakers began distorting. I was surpised, and the guys at Strathfield were too, and swapped over the 222 for a new Altec, same as the one I had before. (They came to the conclusion that 222's are good for running 6x9's and smaller only, not subs). Instantly more base, more than originally, which confirmed to them that the first amp had problems when it started. But still nowhere near the base it should have. I persisted with this for a while, but got sick of the relative lack of base. I went back on a day one of their sound mechanics was in, the only words he told me was "Give that sub a good burial".

Apparently the 12 inch Kicker Impulse sub was causing all my problems from the start, although to an untrained ear, it just sounded low on volume. A new Sony XSL1236 sub was installed, and suddenly the car has enough base to vibrate the mirror off my front window.

In the end, I ended up paying for an amp and sub that didn't even work, plus the cost of a new amp and sub, and new cabling (for looks). Strathfield Wagga were extremely helpful to me, and I recommend them to anyone, they did more than they had to.

Moral of the story? Shortcuts suck, what started out as a good idea at the time turned into a painfully long trouble shooting exercise... know what you're getting yourself into, I guess....

And if you read all this, well done, I admire ya!

Now the only thing I need to do is work out which way to face the sub in the boot...

Attached Images
File Type: jpeg xsl1236_2.jpeg (7.4 KB, 112 views)

EUR04D - Ford Focus
The Blue Flame

Mk II Escort RS2000
How much boost?
Thanks for 2004, crew.
Timmeh is offline  
Sponsored Links
post #2 of 5 (permalink) Old 11-27-02, 05:52 PM
Australian EL Wagon Member
dcstraight's Avatar
Join Date: Oct 2001
Location: Melbourne
Age: 38
Posts: 677
Maybe before, all you had was 'base', but now you have bass ;-)


Wagons are rarer ;-)
dcstraight is offline  
post #3 of 5 (permalink) Old 11-27-02, 07:44 PM
Registered User
Join Date: Sep 2001
Location: Perth
Posts: 1,386
Well... at least you got a box!! Some boxes do fetch quite a bit.

Just a note/tip with your amp, set your speaker channels(300x2) to high pass, and your sub channel to lowpass. (if you haven't already done it)

This way, you should be able to crank the speakers in the car alot louder.

EL driver...
Futura97 is offline  
post #4 of 5 (permalink) Old 11-27-02, 08:27 PM
Registered User
Hoon's Avatar
Join Date: Sep 2002
Location: Brisbane, Australia
Posts: 285
Sucks that you bought some faulty gear. Note to be made that the Kicker Impulse series are only entry level, and are the basic quality gear you can get. You shouldn't expect massive amounts of bass from them in the first place.

Now with the way the sub actually points, all depends on weather you have ports in the box or not. Ports meaning round holes with a cylinder inside. If you do, it's best they either point their way towards the front of the cabin, either though the back seat, or even better, through the parcel tray. This will filter in your deeper sounds.

For some punch in your bass, I find the sub towards the front of the car is good. For a more droney, dullish bass, point to the rear.

I have 2 x 12 JL subs pointed to the front of the car, with the ports going through the back seat, and it sounds AWESOME. Also, don't be discouraged from Kicker in the future. Their amps are my favorite.

"Keep it Real"
"Big D" Dion.
Ford XE Green n Gold 4.1L IL6 Nitrous Assisted. Best time to date: 14.338 @ 98MPH
Mazda 626 Faded Blue 2L IL4 NA Diesel!
Hoon is offline  
post #5 of 5 (permalink) Old 11-28-02, 12:55 AM Thread Starter
Timmeh's Avatar
Join Date: Aug 2002
Location: Newcastle, NSW
Age: 36
Posts: 2,922
dcstraight - that might have been my problem from the start! LOL

Futura97 - I dont actually have any speakers hooked up on the amp so far, but you're very right, when they are, I'll definitely set them to high pass. The car speakers are next on my list, I think if I amp the factory rears, bad things will happen...

Hoon - Thanks for your info, the box isn't ported, and after a quick play around, it seems to give a punchier bass pointed into the car. Which is consistent with what you've said. As for brands, it seems whenever I stray from Sony (who currently dominate my car audio), I get problems, but I'll always remain open minded - things happen to the best of brands too.

Thanks for your help and comments!

Cheers... Tim

EUR04D - Ford Focus
The Blue Flame

Mk II Escort RS2000
How much boost?
Thanks for 2004, crew.
Timmeh is offline  
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > General Tech

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome