There are 3 basic types of speakers that we install:

  • Front Speakers
  • Rear Speakers
  • Subwoofers

Small Note: We sell replacement speakers for all cars. These are normally coax speakers that are full range music and replace the standard/factory speakers that are already installed. Prices for these products start from £20.

Front Speakers

Front speakers are for people who want excellent sound quality in their car and with brands like ‘Genesis’ (Made in England) and CDT (USA) in stock, we have the bases covered.

Consisting of mid range and tweeter components we can supply and install these speakers, in 6.5” and 5.25” sizes, to any car, modern or old. With the option of A-post positioning for tweeters, this creates a good sound stage and image.

We have all our products on running demos in-store. If however, you like your music loud, as well as clear, we have a brand called ‘Planet Audio’ from the US who also do mid range and tweeter components.

These speakers are also on running demos in-store, wired up to amplifiers to get the absolute max output achievable. Prices start from £130 and range to £2500 and above. Again, if you have any questions don’t hesitate to call in, ring or e-mail us.

Rear Speakers

Rear speakers are normally 6” x 9”, commonly called six by nines, these speakers are usually installed on the rear parcel shelf or a rear deck of a saloon car. These speakers can be used for sound quality as rear fill.

The best use of 6” x 9” speakers is for loud and clear music, in car audio they will make more output per pound than any other type of speaker. Again, all of our 6 by 9s are on running demos in-store, with prices starting from £50 and ranging up to £250.

We always recommend a shelf build for any type of parcel shelf installation. This maximises bass, sound quality and ensures better security for a vehicle. Question? Call in, ring or email us.



In our opinion – the best bit! For the few people who don’t already know what a subwoofer (also called sub, bass-bin, bin, box, tube, bass-box and woofer) is, it is a large speaker designated with the sole task of outputting low frequencies for bass only sounds. The standard sizes of these speakers are 10”, 12” and 15”, although it is possible to have 8” subwoofers and even a massive 18”.

Note: we have 12 18” subwoofers in our demo van!!!

We highly recommend these are installed in a bass-box; subwoofers are again used for superior sound quality and extreme loudness.

For those of you into superior sound quality we recommend having one 10” or 12” subwoofer installed in a sealed enclosure that will give a smooth, deep and accurate bass line. However, for people (including the entire team here at K and M) who want loud, clear, and organ-shifting bass … you’ve come to the right website!!

We have no ethical, or for that matter any, limit on how loud bass can be or how many woofers you want or what size those woofers should be!

That said most cars can easily fit 2 x 10” or 2 x 12” subwoofers and some can even fit 2 x 15” subs, all cars however, will easily be able to fit one 10” or one 12”. Prices vary with different sizes, powers and brands. Our prices start from £40 (Planet Audio ZR-10) and £60 (Planet Audio ZR-12), but we can give very good advice on what will work best in your car.

An example:

You have a 500W amp and are thinking of buying a 3000W 15” subwoofer, we may ask you what the sensitivity of the sub is or can we check what box size it is going to need. If the answer is 85 DB @ 1W/1m that fits into a 3.5 cubic foot box, then our answer would be that you should get a 12” sub (e.g. Planet Audio BB12) with 94 DB @ 1W/1m that fits into a 1.7 cubic foot box. When your amp is outputting 500 Watts, the Planet Audio BB12 will be 9DB louder, that’s 3 times louder to the ear, with less than half the box size. When it comes to bass, think about it, save yourself some time and money and let us do the thinking … because we do a lot of it.

All the subwoofers we sell have 12 months warranty. Five out of six of our in-store stands have subwoofers on them for you to hear, or feel, the bass. If you have any questions about subwoofers do not hesitate to call into the store, ring or e-mail us.