gooniebird63 Posted January 2, 2019 Share Posted January 2, 2019 Just got a Klipsch 120SW to replace a dead 10 120V, I didn't change any settings in the A/V receiver and I no longer have that mid-bass punch like you'd have for gunshots and such..you know, the punch you can feel in your chest, I am using Polk Rti4 front speakers and a matching center speaker, I have the crossover set to 70hz, what am I missing? I have really deep lows just don't have the punch with the new 120SW. 1 Quote Link to comment Share on other sites More sharing options...
jason str Posted January 2, 2019 Share Posted January 2, 2019 Different subwoofers have different characteristics, you will have to recalibrate whatever DSP the receiver is using to properly tune in the new sub. Quote Link to comment Share on other sites More sharing options...
gooniebird63 Posted January 2, 2019 Author Share Posted January 2, 2019 17 minutes ago, jason str said: Different subwoofers have different characteristics, you will have to recalibrate whatever DSP the receiver is using to properly tune in the new sub. Digital Signal Processing,? I did the auto calibration function with the new sub but i just don't like how it sounds, i did an audio frequency sweep and didn't hear any gaps in the transition from the sub to the front speakers. I even played around by changing the crossover to 60, 70 and 80hz and higher, my auto calibration always senses the front speakers as large... i see that's a common problem so i always change it to "small",what other tweaks should i consider? Quote Link to comment Share on other sites More sharing options...
jason str Posted January 2, 2019 Share Posted January 2, 2019 Did you do a sub crawl when you placed the subwoofer ? Does the DSP offer crossover slope options ? Quote Link to comment Share on other sites More sharing options...
gooniebird63 Posted January 2, 2019 Author Share Posted January 2, 2019 (edited) 24 minutes ago, jason str said: Did you do a sub crawl when you placed the subwoofer ? Does the DSP offer crossover slope options ? I didn't do the crawl, the only adjustments for crossover are hz adjustments in increments of 10hz, not sure what "slope" is, sorry. I am able to adjust decibels for each speaker also and distance. Edited January 2, 2019 by gooniebird63 Quote Link to comment Share on other sites More sharing options...
jason str Posted January 2, 2019 Share Posted January 2, 2019 Sub crawl should be the first thing you do. Google crossover slope if you are interested in learning more but in layman's terms it means how quickly the loudspeaker rolls off. Quote Link to comment Share on other sites More sharing options...
gooniebird63 Posted January 2, 2019 Author Share Posted January 2, 2019 10 minutes ago, jason str said: Sub crawl should be the first thing you do. Google crossover slope if you are interested in learning more but in layman's terms it means how quickly the loudspeaker rolls off. I am reading about slope now. Quote Link to comment Share on other sites More sharing options...
gooniebird63 Posted January 2, 2019 Author Share Posted January 2, 2019 1 minute ago, gooniebird63 said: I am reading about slope now. My fronts can produce 50hz so i have the crossover on them set to 70hz in the receiver, that should be pretty good, no? Quote Link to comment Share on other sites More sharing options...
jason str Posted January 2, 2019 Share Posted January 2, 2019 80 or 90 would be best based on the little woofers. If you have not done the sub crawl you are shortchanging yourself. Quote Link to comment Share on other sites More sharing options...
geoff. Posted January 2, 2019 Share Posted January 2, 2019 Ok, I’ll take the hit on this one... What is “the sub crawl”? Quote Link to comment Share on other sites More sharing options...
jason str Posted January 2, 2019 Share Posted January 2, 2019 16 minutes ago, geoff. said: Ok, I’ll take the hit on this one... What is “the sub crawl”? Sub crawl gives a good general spot for subwoofer placement for best performance. >link< Quote Link to comment Share on other sites More sharing options...
wuzzzer Posted January 2, 2019 Share Posted January 2, 2019 39 minutes ago, geoff. said: Ok, I’ll take the hit on this one... What is “the sub crawl”? Put the sub where you normally sit to listen. Play some bass heavy music or movies. Crawl around the room and listen at various places. Put the sub where it sounds the best as you're crawling around. Quote Link to comment Share on other sites More sharing options...
USNRET Posted January 2, 2019 Share Posted January 2, 2019 How do you orchestrate the crawl if you have dual subs? SVS PB-4000s in my case. Quote Link to comment Share on other sites More sharing options...
jason str Posted January 3, 2019 Share Posted January 3, 2019 6 minutes ago, USNRET said: How do you orchestrate the crawl if you have dual subs? SVS PB-4000s in my case. If using the same subs you can just use the second best place you find for the second sub placement. 1 Quote Link to comment Share on other sites More sharing options...
USNRET Posted January 3, 2019 Share Posted January 3, 2019 25 minutes ago, jason str said: If using the same subs you can just use the second best place you find for the second sub placement. Appliance moving straps and two hurt backs. One reason I ordered the SVS isolators was to raise the subs off the floor enough to get the straps / foam protection (piano black finish) underneath. Quote Link to comment Share on other sites More sharing options...
Moderators dtel Posted January 6, 2019 Moderators Share Posted January 6, 2019 On 1/2/2019 at 1:06 PM, gooniebird63 said: I have the crossover set to 70hz, what am I missing? I think you may be missing some bass from the Polks with the sub that low, what was your other sub set at. I think your sub may not even really be in the punchy part of the music ? Look where 70 falls on these charts And Welcome Gooniebird 1 Quote Link to comment Share on other sites More sharing options...
Moderators dtel Posted January 6, 2019 Moderators Share Posted January 6, 2019 On 1/2/2019 at 3:21 PM, jason str said: If you have not done the sub crawl you are shortchanging yourself. I had no choice where it went, but I did do a pub crawl and a room crawl on a ship once, they were a little different but fun. On 1/2/2019 at 5:13 PM, wuzzzer said: Put the sub where it sounds the best as you're crawling around. I had to settle on where it fit, no other choice. Mains and sub together are 17' wide, room is 24' wide, it had to go in the center. Never checked before, each one is the same width 68", strange how things work. 1 Quote Link to comment Share on other sites More sharing options...
gooniebird63 Posted January 9, 2019 Author Share Posted January 9, 2019 I am sorry..I forgot that I posted to this forum, hope I didn't frustrate anyone by not answering. my old sub was a 10 inch and I had the crossover knob set all the way to the right , same as the new one and the gain at halfway, also the same. Quote Link to comment Share on other sites More sharing options...
Moderators dtel Posted January 10, 2019 Moderators Share Posted January 10, 2019 With the crossover knob all the way to the right your sub was playing well into the punch range I would guess, I don't know what that knob goes to on your sub. Normally you set it a little above where your speakers will play as far as HZ, if you overlap alot it may sound funny, 2 speakers reproducing the same range. What you're hearing it the Punch of the main speakers, or lack of it, the sub only takes over below 70 if that's where it's set. Quote Link to comment Share on other sites More sharing options...
gooniebird63 Posted January 10, 2019 Author Share Posted January 10, 2019 This goes to 11. Quote Link to comment Share on other sites More sharing options...
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