Originally Posted by
RMC
Hi retro soulman,
RE "The problem is that any crossover point upper the 500hz make the speaker system to not sound correct. At 800hz the blend of the mid frequencies with the lows is not good and you can hear that. So i need a horn that goes down to 500hz."
Following a troubleshooting pattern from simpler to more complex... and trying to make good with what you have.
Assuming the driver reversed polarity issue was taken care of for a 12 db/oct crossover?
On your pic a vent opening, for vented rear chamber, shows bare plywood inside on back panel. LF driver low mid reflections in cab due to lack of damping material?
Moreover have you tried with some other LF drivers you have? e.g. K130, K140
Before jumping to conclusion about the MF horn, since you have active crossovers, hopefully with 24 db/oct, have you tested it with this? Considering these cabs provide pretty high "shelving" type response in the low mid, problem experienced might also be one of too much LF/MF overlap around xo freq. A steeper xo might help cleaning the sound?
BTW the initial 4662: 4560 with K130, 2461, 2345 and 3110. Later 4662A: 4560, E140, 2425, 2370 and 3110A (later with 2426). This might give you some additional ideas. Regards,
Richard