My new system

So, im selling all my kit, and for what?

my new rig, 12v supplied by a chopped up car jump start pack with a big silly cap bigger than the battery, 200w (but blatantly not) amp powering 2 6inch parcel shelf halfords rubbish in a chipboard boombox held together with nonails, 300watt jenson amp with high pass set at about 90hz running a 10inch in a reflex box, or another more serious 10inch in a bandpass box (deathbox variant) for lower bass (heavier but makes a good seat). oh yeah, a nice 80's looking crossover i found on ebay as well.



sorry massive picture im bad at this.

anyway, its fun and its cost about 100 quid or so not including bits i already had - credit crunch special!

because of the crossover, the 'mid-tops' can blast out far beyond what you would expect for 20 quid at halfords as there isnt much excursion. the bass is kicky with the reflex box, and rounded and lower with the deathbox bandpass one...

good for barbeque's and whatnot.

so, rate my rig!

Any info on that crossover? Spec/cost/can you get more?

Looks beans! Although the exposed electronics worries me a lil bit?

cut list and spec sheet 

as you say its pretty much bonfire fuel.

The crossover is a CR78 pyramid unit apparently, i just searched on ebay for a car audio crossover.

With a small system like this - barely bigger than a boom-box, everything will be a compromise.

Exposed electrics isnt a worry - its all just 12v car stuff, and since the whole lot isnt going to put out more than 200watts anyway its not like any of it is drawing huge current.

The whole lot (thats with the 4th order bandpass bin, the reflex box and the mids) + battery and capacitor fit into a granny trolley.

When you turn it up the reflex bin cant keep up. The driver handles 100w but is very low SPL compared to a proper PA driver. The bandpass bin has a much better hertz driver which is another silly plastic car jobby but has a much lighter cone and dual spider design, also handles 250w and is prevented from over excursion by the cab design.

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instuctions to build:

you will have to build, then tune. The tuning will have to be very precise and yo uwill never be able to work it out in advance when building on this small a scale, with anything like this level of innacuracy. Build all the boxes such that they are bigger than needed and then decrease the volume gradually (physically) through a combination of cutting bits off and wedging bits in, etc. Once you get the preferred sound. nonails everywhere.

Nice work

(for one of my older projects) I used 16awg cable, electricians blocks and speaker "banana" connectors when I wanted a plug system, all worked well for me :)

mrchay wrote: @johnnyPyro well spotted :-) I figured it would be ok  because the amp just never draws 25amps - if it was even close it would pop the cone straight out of the 10inch drivers im using.