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btnhfan
10-03-2004, 11:58 PM
Right now, I have Boston RC620 comps, and they sound very good to me, as it is the only comp set that I have heard. Would upgrading those midbass's to dd midbass's make much of a difference? The comps were in the car when I bought them, so can someone give me info on how they compare to others?

squeak9798
10-04-2004, 10:44 AM
You may not be able to use the DD mids with your boston crossovers

btnhfan
10-04-2004, 06:01 PM
How come? 10 char.

squeak9798
10-04-2004, 06:22 PM
Passive crossovers are designed for use with specific impedence drivers. If you change the impedence of the driver connected to the crossover, the crossover point will change (which is usually not a good thing). So you can only replace a speaker being ran with a passive crossover with a speaker of the same impedence.

btnhfan
10-04-2004, 08:33 PM
Both speakers are 4 ohms, so would it be okay then? Would it even be worth it to upgrade?

Redford
10-04-2004, 10:52 PM
both are most likely NOT 4 ohm... the whole boston system may be but not the individual drivers

btnhfan
10-04-2004, 11:07 PM
Ooooo. Why do they do that?

Redford
10-05-2004, 12:22 AM
well its the way the crossovers and electronics work, i couldnt explain it to you though

squeak9798
10-05-2004, 12:26 AM
Easy way to tell.....whip out a DMM and measure the DC resistence of the mid. If it's somewhere in the 3.x's, then it's safe to assume that it's a nominal 4ohm driver

DBfan187
10-05-2004, 12:28 AM
Ooooo. Why do they do that?Think JL - they want you to use their stuff and ONLY their stuff! Also b/c they can!:p:

btnhfan
10-05-2004, 11:26 PM
****. So lets say that both are the samn resistance. Is the upgrade still worth it?

Redford
10-06-2004, 12:10 AM
probably not because the drivers wont sound the same