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Chip Amps Amplifiers based on integrated circuits

Poor bass output
Poor bass output
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Old 14th March 2019, 06:21 PM   #21
turk 182 is offline turk 182  Canada
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Join Date: Oct 2012
can you show us the end of your creation, where the passive radiators are?

i'm thinking that with a divider and potentially some added mass we might get some bass...but i've already had a scotch so i'm optimistic...
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Old 14th March 2019, 06:40 PM   #22
majorwedgy is offline majorwedgy  United Kingdom
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Quote:
Originally Posted by turk 182 View Post
oh and the Visaton w130's Bl is listed as 4.6 Tm is that good?
Force factor, yeah 4.6 isn't bad
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Old 14th March 2019, 08:55 PM   #23
majorwedgy is offline majorwedgy  United Kingdom
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So definitely isolated the input socket as being an issue. Am amp issue now... There is a high pitch static noise when I touch the heatsink screws and there is a little bit of static on the background, any idea why that would be? Gain improves bass but obviously increases the hiss in the background
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Old 14th March 2019, 09:02 PM   #24
turk 182 is offline turk 182  Canada
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my guess...loss of ground or a broken/cracked solder joint on the associated pin of the input hence the loss of signal but could still be a more sinister problem...scope it out (magnifying glass that is)
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Old 17th March 2019, 04:44 PM   #25
Nenola is offline Nenola  Finland
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Here's my thoughts:

-Too small enclosure, found some suggestions: sealed 7 liters, BR 20 liters tuned to 44hz, BR 30 liters tuned to 39hz.
-Not enough passive radiators, suggestion would be that the passive radiator area would be twice the size of the active driver. I did a similar build with only one Dayton Audio ND91 driver with two 4" passive radiators.
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Old 18th March 2019, 08:04 AM   #26
majorwedgy is offline majorwedgy  United Kingdom
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Thanks for the help guys, actually think the dsp suggestion is probably the one that is most likely to be cause versus what I aimed to achieve. There is very little movement from the cones and whilst I know the enclosure is not a great size, it doesn't matter what size it is if the air isn't moving. Looking for a cheap headphone dac to see what that does.
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Old 18th March 2019, 05:54 PM   #27
majorwedgy is offline majorwedgy  United Kingdom
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Join Date: Dec 2006
Worth saying I have a kicker ik500 that has a sound I really like, I was trying to replicate a similar sound profile to that. The kick from the speakers and the passive radiator that has is what this is not replicating. Suspicion is the dsp is the difference, Esp as that is so say 20w a channel
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