Need to cure bass problem with speakers...

ToplessBMW3 · #1 (**permalink**) 09-19-2002, 06:31 AM

I have a set of CDT Audio Cambria series components up front powered by an Orion HCCA 225g4 amp. I have an A/D/S R12S sub (300w each coil, dual voice coils) powered by an Orion HCCA 250g4 amp. The problem is, when I have the bass up on my head unit to make the sub hit more, the bass gets all distorted on the speakers. Is there any way I can correct this, cause I looked for a separate sub control on my Alpine 7894 head and can't find it. Anyone with this head know anything that would help me with this problem, or perhaps it's something that I can tweak on the amp end of it to reduce the distortion? Thanks guys...I don't know all that much about audio so bear with me!

Sal

DOO · #2 (**permalink**) 09-19-2002, 08:33 AM

1. Do you have the crossover wired correctly?

2. Do you have the frequency settings on your headunit adjusted appropriately? It's possible you may be inadvertantly telling your headunit to allow damaging low frequencies to enter your speakers. Double check!

Anyone else want to help out?

BoominBenz · #3 (**permalink**) 09-19-2002, 08:36 AM

Does your Orion 225g4 have a high pass crossover? If so, set it to at least 125hz HIGH PASS. Also, as DOO said if there is a crossover on your Alpine headunit, make sure it is set to block low frequencies to your interior speakers.
Peace

ToplessBMW3 · #4 (**permalink**) 09-19-2002, 08:44 PM

Ok, yeah my amp does have a high pass crossover, but I didn't want to put that on because it cuts out all the midbass. As far as the crossovers on the speakers, I didn't put them in cause my cousin said that the crossovers from my old Bostons should be in there. Maybe I should check that out... My Alpine head has a low and high frequency pass filter, so what frequency should I set them at? Thanks guys!

Sal

LUNI2NZ · #5 (**permalink**) 09-20-2002, 04:26 AM

The Alpine CDA-7894 has a dedicated 4v sub preout. It also has sub level control on the deck. You might have to "turn on" the sub control in the menu. Since you have a sub, you should be running the amp for your mids/highs in hipass. That shouldn't hurt your midbass. If the amp has an adjustable crossover point, try it at 80Hz. Again, since you have a sub, don't use any bass boost on the deck. I don't think the 7894 has a LOUD option, but if it does, turn it off.

As far as crossovers go, they are specifically engineered for the drivers they're mated with. I wouldn't be using Boston crossovers with some other brand of speakers.

Jay

Jay