Low pass settings
Sumflow
Posts: 64
Theoretically how should the Low Pass adjustable range be set to start on the Polk subwoofer?.
My subwoofer PSW110 DOM 11 09 has an adjustable range between 80hz and 120 - LFE.
The McIntosh MA-6100 amp goes into the RCA line in inputs of the subwoofer and power amp, with "Y" cables.
My JBL-100 speakers have a three way system with a crossover to the mid at 1500 Hz.
My subwoofer PSW110 DOM 11 09 has an adjustable range between 80hz and 120 - LFE.
The McIntosh MA-6100 amp goes into the RCA line in inputs of the subwoofer and power amp, with "Y" cables.
My JBL-100 speakers have a three way system with a crossover to the mid at 1500 Hz.
"At the first bend, I had the clear sensation that Tazio had taken it badly and that we would end up in the ditch; I felt myself stiffen as I waited for the crunch. Instead, we found ourselves on the next straight with the car in a perfect position. I looked at him, his rugged face was calm, just as it always was, and certainly not the face of someone who had just escaped a hair-raising spin. I had the same sensation at the second bend. By the fourth or fifth bend I began to understand; in the meantime, I had noticed that through the entire bend Tazio did not lift his foot from the accelerator, and that, in fact, it was flat on the floor. As bend followed bend, I discovered his secret. Nuvolari entered the bend somewhat earlier than my driver's instinct would have told me to. But he went into the bend in an unusual way: with one movement he aimed the nose of the car at the inside edge, just where the curve itself started. His foot was flat down, and he had obviously changed down to the right gear before going through this fearsome rigmarole. In this way he put the car into a four-wheel drift, making the most of the thrust of the centrifugal force and keeping it on the road with the traction of the driving wheels. Throughout the bend the car shaved the inside edge, and when the bend turned into the straight the car was in the normal position for accelerating down it, with no need for any corrections."
Enzo Ferrari
Enzo Ferrari
Post edited by Sumflow on
Comments
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Hello Sumflow,
Am I correct that you have taken either the right or left line level output, on the Mac, to a "Y" cable and then in to the sub? Or, is the right and left channel combined with a "Y" cable into the sub?
As far as the low pass setting, on the sub, that depends upon the low frequency capability of the JBLs. And that is going to depend on speaker placement with reference to the wall, their height off of the floor and a few other variables. Probably if you began at 80Hz and listened to a well made recording with a male voice and judged how successful the upper bass sounds. Then try raising the frequency a small amount and listened again to the same recording. You'll reach a setting where the person's voice starts getting a bit "thick" and "chesty" and then reduce the setting till things start sounding cohesive and well blended.
Regards, Ken -
Both lines of the Mac to both sides of the sub. A separate "Y" for each side. Each side gets a "Y" and an input into a line in the sub. Like I think it shows here. One part of "Y" into power amp, one part of "Y" into preamp, and the last part of "Y," into line into Subwoofer.Kenneth Swauger wrote: »you have taken either the right or left line level output, on the Mac, to a "Y" cable and then in to the sub? Or, is the right and left channel combined with a "Y" cable into the sub?
Thanks Ken I'll try at 80. I thought you might be able to tell by the specs from the speaker about its frequencies and crossovers."At the first bend, I had the clear sensation that Tazio had taken it badly and that we would end up in the ditch; I felt myself stiffen as I waited for the crunch. Instead, we found ourselves on the next straight with the car in a perfect position. I looked at him, his rugged face was calm, just as it always was, and certainly not the face of someone who had just escaped a hair-raising spin. I had the same sensation at the second bend. By the fourth or fifth bend I began to understand; in the meantime, I had noticed that through the entire bend Tazio did not lift his foot from the accelerator, and that, in fact, it was flat on the floor. As bend followed bend, I discovered his secret. Nuvolari entered the bend somewhat earlier than my driver's instinct would have told me to. But he went into the bend in an unusual way: with one movement he aimed the nose of the car at the inside edge, just where the curve itself started. His foot was flat down, and he had obviously changed down to the right gear before going through this fearsome rigmarole. In this way he put the car into a four-wheel drift, making the most of the thrust of the centrifugal force and keeping it on the road with the traction of the driving wheels. Throughout the bend the car shaved the inside edge, and when the bend turned into the straight the car was in the normal position for accelerating down it, with no need for any corrections."
Enzo Ferrari
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