Managed to get hold of one of these for £40 on Friday and stuck it in the car on Saturday

Sounds much better than the sub and amp I had in before.

Still needs some playing around with on the head unit and Vibe unit though.

Sounds good when the boot is open and messing around with settings, but rattling and sounds rubbish when driving around and boot lid is shut, if I turn the volume up too loud.

I can adjust the frquency on the head unit for the sub woofer, with a choice of 55, 85 and I think, 115 mhz?

Anyone know the best sort of frequencies to try for general use?

Sounds good with some tunes and rubbish with others.

Need to find a lonely place to try the setting out, instead of when I'm driving.

Don't really like trying them out at home, as I have potential thieves walking past my house

Great work Theresa, I'm still desiding if I want to go down the sub route, the 6by9's and components are such a improvement already

whats rattling/vibrating? may be work going down the soundproofing route for the boot install?

I think it's the speaker itself that's vibrating, but only seems more noticable when the boot lid is shut?

Think it just needs adjusting, but hard to adjust when in the boot and you're driving around

Sounded good going through town on Saturday, until it changed to another tune and I had to turn it down out of embarrassment

Think I may have to deploy a young Grandson to the boot to adjust the settings while I drive around

Fixed that for you, now I can do this...
Chav!!!

The lower numbers are bass frequencies and are what will be causing the rattle. But also what give the bass notes. You need to find that balance between rattles and sub woofer distortion.

Have you tried altering the gain on the amp? It might need turning down to create a balance for different music types.

Vibe subs are genuinly sh*t, they look impressive but sound pants, the use of downloaded mp3 which have been converted poorly will show up bad with a sub, try tuning the headunit first and leave the amp at quarter or "abit" gain, with the input as flat and bass boost off

MHz on the head unit should be around 85-100mhz range unless you have a eq setting on your headunit, try to set the front speaker gain by 1 or 2 to give you a sound stage, if your headunit has a sub preout, use the head unit to tune it and adjust the gain for the sub

Cheers for my fixed quote Sam


Thanks for the help szkom and AudioGuy

I've written down some notes from your advice to take out to the car with me and will have a mess around with the settings when I get chance.

There are quite a few different settings on my head unit, so will mess around with them a bit more too and try to find a good balance with that and the Vibe unit.