Hi guys,

I just hooked up a 4 ch amp to a deh-80prs.
The front tweeter and mids is wired in active to each channel of the 4ch amp.
The installer removed the passive crossover from the mids, but retain it for the tweeter.

He said the power from the amp is too much for the tweeter, so must still attached with the crossover.
Is this true ?
Cannot connect directly to the tweeter ?

Well, you have to give more info like the tweeter rms and the 4 channel rms.If its around the same then no need the crossover. Another thing, if your 4 channel have separate gain for then you can adjust the gain lower for the tweeter to match with the speaker sound.

The tweeter is from MTX Mercury MLK6500
The spec is as below.
Dunno if the 80w RMS also applies to the tweeter o not

Power Handling - 80W / 160W Peak
Impedance (Ohm) - 4 Ohm
Frequency response (Hz) - 65Hz - 20 kHz
Sensitivity (dB/SPL) - 92
Crossover 2-Way - 18dB/6dB
Tweeter Mounting Options - Flush, Angle, Surface
Tweeter - 25mm Soft Dome
Tweeter Mounting Depth - 1"
Woofer Mounting Depth - 2.5"
Woofer Cut-Out diameter - 5"
Tweeter Cut-Out diameter - 1"

right now i have installed it to kenwood excelon kac-x520 (4 channel)
reli cannot find the power output of this amp, but so far the speakers seem to handle it well
but, i am soon going to replace it with a soundstream about 50w rms
the kenwood is old liao, sometime sot sot a bit

Haaaiihh, i m very noob
sifu please help

u can run active for tweets. juz need to match the gain. overall ur tweets gain will be lower than mids gain.
to be safe gain settings on amp:
tweeter gain - 8-9oclock
mids gain - 10-12oclock

preferably xover on tweets 2500hz or above at min 12db slope. 6db is not recommended for ur tweets

u can fine tune the level from ur hu proc..
happy icing..

Thanks for the tip bro
Will try to set the gain

if you quote him right...

then change your installer...

bro, u must give me the address and contact of your shop first mar

err..

I dont have a car shop... I only have a studio...

U can safely run your tweeters active provided you have done the right xover settings from HU or amp. With correct cut off freq they can handle the power of ur amp but if not done properly even 15W will burn them. So make sure when u first connect them, keep ur vol knob min, adjust the xover first and then increase the volume. U will b safe.

Another thing is u can put a small capacitor inline with positive wire of ur tweeter to protect it from any DC surge

This post has been edited by mughal90: Mar 14 2013, 06:40 PM