john_k_antony
Well-Known Member
Friends
I have Kef iQ7 FS. I always felt that it didn't have any bass. I was playing it with Denon 2310 AVR and felt that was the reason for low bass from the speakers. I always had to use a sub woofer to get any bass from my system. 2 days ago, I got an Acoustic Portrait NJ1 dual mono power amp. Connecting to the power amp did improve some bass response but it was nothing close to the bass I heard from Acoustic Portrait Bookshelves connected to the same NJ1s.
But today I notice something strange. I was sitting pretty close to the speaker (around 3 feets from the speaker) and my ear was at the woofer level. Voila the speakers are producing pretty good bass :O. Then I moved back to my listening position that is around 15 feets from the speakers and ear level is at midrange/tweeter level. Now the bass has significantly reduced. When I move closer to the speakers and lower my ears to the woofer level, the bass is back with a bang.
My questions,
1. Is the woofer not able to push the air so far to 15ft due to lack of amplifier power or the bass driver is not capable of pushing the air that far to give the bass at 15ft away from speakers?
2. The volume levels are pretty high and the mids and highs are very fine and detailed, so I am not sure the amplification is the issue here.
3. The AP power amp is rated at 75W/ch @8ohms. I think this is good enough to drive the 3-Way, 90db, 15W-150W Kef iQ7 to produce good bass.
-John.
I have Kef iQ7 FS. I always felt that it didn't have any bass. I was playing it with Denon 2310 AVR and felt that was the reason for low bass from the speakers. I always had to use a sub woofer to get any bass from my system. 2 days ago, I got an Acoustic Portrait NJ1 dual mono power amp. Connecting to the power amp did improve some bass response but it was nothing close to the bass I heard from Acoustic Portrait Bookshelves connected to the same NJ1s.
But today I notice something strange. I was sitting pretty close to the speaker (around 3 feets from the speaker) and my ear was at the woofer level. Voila the speakers are producing pretty good bass :O. Then I moved back to my listening position that is around 15 feets from the speakers and ear level is at midrange/tweeter level. Now the bass has significantly reduced. When I move closer to the speakers and lower my ears to the woofer level, the bass is back with a bang.
My questions,
1. Is the woofer not able to push the air so far to 15ft due to lack of amplifier power or the bass driver is not capable of pushing the air that far to give the bass at 15ft away from speakers?
2. The volume levels are pretty high and the mids and highs are very fine and detailed, so I am not sure the amplification is the issue here.
3. The AP power amp is rated at 75W/ch @8ohms. I think this is good enough to drive the 3-Way, 90db, 15W-150W Kef iQ7 to produce good bass.
-John.