DiyMobileAudio.com Car Stereo Forum banner

1 - 12 of 12 Posts

·
Premium Member
Joined
·
1,464 Posts
Discussion Starter #1
Anyone have experience with these? Ported or sealed. Enclosure and port area sizes. Ant help would be appreciated. I have 2 I'm going to try and use
 

·
Registered
Joined
·
2,743 Posts
HA Clarus C8SW-D2. 170 watts.

EBP of 113.57 seems best suited to vented.

HA recommended .75 ft^3 @ 38 Hz looks like your best bet for flat response. 35.8 Hz F3. 108 dB @ 44 Hz. Higher Fb and/or greater Vb for commensurately higher (and peakier) output.

One of these https://www.parts-express.com/precision-port-3-flared-speaker-cabinet-port-tube-kit--268-350 at 16.4” (32.2 m/s); or a 4” non-flared tube at 28.2” (18.1 m/s). Either should be completely noise-free. Not sure if 32.2 m/s would produce audible chuffing in non-flared tube (3” x 15.3”).
 

Attachments

·
Premium Member
Joined
·
1,464 Posts
Discussion Starter #3
Thos os great. I have 2. I can either put 800 watts to the pair or 350.

Sent from my SM-G975U using Tapatalk
 

·
Premium Member
Joined
·
1,464 Posts
Discussion Starter #4
A single 3" flared for the pair or per?

Sent from my SM-G975U using Tapatalk
 

·
Registered
Joined
·
2,743 Posts
So a 4" flared would be fine as well? Assuming I wire to 4 ohm
Not sure what you're asking here. One 4" flared per driver wouldn't hurt, if you don't mind the extra vent length and displacement. I'd probably opt for 3" flared instead, particularly to the extent that I though I wouldn't need to push them hard.

At 36.2 m/s, you could get away with one 4" flared for both (one 1.5 ft^3 airspace, 340 watts combined). However, it is generally preferable to have separate airspace for each vented driver.

Not sure how wiring configuration/load impedance figures into vent selection.
 

·
Registered
Joined
·
2,743 Posts
More power can introduce port noise

Sent from my SM-G975U using Tapatalk
Yes. I'm well aware of that ...which is why I indicate watts whenever I post modeling results.

I cannot know the effects of a 4 ohm load versus any other on an unknown amplifier.
 

·
Premium Member
Joined
·
1,464 Posts
Discussion Starter #10
Yes. I'm well aware of that ...which is why I indicate watts whenever I post modeling results.



I cannot know the effects of a 4 ohm load versus any other on an unknown amplifier.
Correct. I thought you could put in what power

Sent from my SM-G975U using Tapatalk
 

·
Registered
Joined
·
2,743 Posts
Correct. I thought you could put in what power

Sent from my SM-G975U using Tapatalk
Vent velocity can only be calculated (or even wildly guessed) with respect to a specific signal level (power/watts).

...in this case, 170 watts (per driver), as posted in the above modeling results (and based on HAT specs).
 

·
Premium Member
Joined
·
1,464 Posts
Discussion Starter #12
Vent velocity can only be calculated (or even wildly guessed) with respect to a specific signal level (power/watts).



...in this case, 170 watts (per driver), as posted in the above modeling results (and based on HAT specs).
Perfect

Sent from my SM-G975U using Tapatalk
 
1 - 12 of 12 Posts
Top