[JeffB]

I have an old MTX electronic crossover that was used in a car stereo.  Maybe I should say it was designed for the car stereo market.

I am thinking of trying to use this for my home stereo perhaps just for a test or maybe on a more permanent basis if it works.

Since it requires 12V DC, I was thinking of buying an SLA battery to power it.
I don't know how big of a battery to buy.

I am thinking that if a Clari-T with a 1.3AH battery is sufficient for 6 hours play, that a similar sized battery should work with an electronic crossover.  Surely the electronic crossover draws less current than an amplifier.

In any case I was thinking of getting a 7Ah just to be on the safe side.
Does anybody have any thoughts on whether this will work?
Perhaps it is impossible to know without studying the crossover itself.

I have an old sub box, 2 10" drivers in a sealed boxed made by a/d/s.
I can't say that I was ever too fond of this sub in the car, but a/d/s is known for making quality car speakers.  Since it is just sitting around, I thought I would try it out in my house.

[Vinnie R.]

Hi Jeff,

See if you can find a label on the crossover that states the amount of current it draws (or it might say the power it consumes at 12V).

Do you have the manual?  It should say this in the "specifications" section.

Or, do you have a ammeter?  You can measure the current draw yourself.

Let me know this figure and I'll recommend a battery size.  Of course, you can buy a car battery if you want to make sure you have enough juice for LONG play times  

Regards,

[JeffB]

The MTX crossover had no power markings on it.
I sent an email to MTX and they no longer had specifications for it.
So I bought a 7Ah battery and hooked it up.
The MTX crossover draws 250 mA with music playing through it.
I am not sure how much playing time I can go before I should recharge it.


This a/d/s SB-10 subwoofer is fantastic in my house.  I have demoed countless sub/satellite systems in my day and they just never seemed to integrate well for me.  Not so the SB-10.

I am powering the subwoofer with a JVC D201 100W digital amplifier.  My satellite speakers I like to think of as the $5 dollar speakers.  These are speakers that came with a $200 Sharp all-in-one compoent system from 20 years ago.  They are a single 4" driver in a very small sealed particle board box weighing about 1 pound each.

I have the satellites crossed over at 120Hz.  They prefer 150Hz but then I start hearing vocals in the sub box.  120Hz seems to keep the vocals in the satellites.  I am powering the satellites with a Clari-t.

I am quite liking this setup.  Those little $5 speakers image well, make cymbals sound like symbols and generally make music.

The transition to the subwoofer is near seemless.

[konut]

I LOVE this kind of franken-system. Its amazing sometimes just how good some things will sound if you respect the laws of physics and use a little common sense. ROCK ON!!