Final- and revised- crossover for the basic (ER15 woofer) speakers for in room placement
Earlier I had posted a “final” crossover for the basic speakers with in room placement. I was pretty happy with them but not wowed. There was a fair gap between the deluxe and basic speakers in my perceived sound quality. But it was as good as I could get them. That was for the in room placement. Then I went to work on the on wall placement. I took on wall measurements and made up a somewhat different crossover for the situation. Clipped it together for voicing and… it sounded much better than what I had before for the in room basic speakers. Better and closer to what the deluxes were yielding. So I also used this new on wall crossover and listened to the speakers with in room placement. Still excellent. Consequently, here is the new and final basics in room crossover. I will change this crossover on page 1 of this thread. This one is final. Really. I swear.
The basic, in room crossover:
R1 is a tweeter padding resistor. Adjust it to taste, to get more or less treble. I like it where it is at 3 Ohms.
The electric filters for the tweeter (C2, C3, L2) and woofer (L4, L5, C6) are electrical third-order. Acoustically, they came out right at LR4.
The Zobels (C7, R11 and R12, C8 ) and filters (L1, C1, R3 and R10, C9, L6) all helped bring things under control and sound good.
The resistors R2, R4, R8, and R9 are not real. Do not add them in. They are there to account for the high DC resistance created by using these small 18 and 20 gauge inductors, needed to fit the crossovers into the tiny cabinets.
Lots of parts but I think that they turned out sounding good.
Final frequency response. No smoothing was applied and it’s just about +/- 2 dB:
Phase. Looks like a good match to me:
Impedance. I’m pretty happy with it but some amps may need to watch out for that dip to ~4 Ohms in the middle:
Reverse tweeter null:
Measurements taken 30 degrees off axis and put into the in room crossover:
Earlier I had posted a “final” crossover for the basic speakers with in room placement. I was pretty happy with them but not wowed. There was a fair gap between the deluxe and basic speakers in my perceived sound quality. But it was as good as I could get them. That was for the in room placement. Then I went to work on the on wall placement. I took on wall measurements and made up a somewhat different crossover for the situation. Clipped it together for voicing and… it sounded much better than what I had before for the in room basic speakers. Better and closer to what the deluxes were yielding. So I also used this new on wall crossover and listened to the speakers with in room placement. Still excellent. Consequently, here is the new and final basics in room crossover. I will change this crossover on page 1 of this thread. This one is final. Really. I swear.
The basic, in room crossover:
R1 is a tweeter padding resistor. Adjust it to taste, to get more or less treble. I like it where it is at 3 Ohms.
The electric filters for the tweeter (C2, C3, L2) and woofer (L4, L5, C6) are electrical third-order. Acoustically, they came out right at LR4.
The Zobels (C7, R11 and R12, C8 ) and filters (L1, C1, R3 and R10, C9, L6) all helped bring things under control and sound good.
The resistors R2, R4, R8, and R9 are not real. Do not add them in. They are there to account for the high DC resistance created by using these small 18 and 20 gauge inductors, needed to fit the crossovers into the tiny cabinets.
Lots of parts but I think that they turned out sounding good.
Final frequency response. No smoothing was applied and it’s just about +/- 2 dB:
Phase. Looks like a good match to me:
Impedance. I’m pretty happy with it but some amps may need to watch out for that dip to ~4 Ohms in the middle:
Reverse tweeter null:
Measurements taken 30 degrees off axis and put into the in room crossover:
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