tc9

[thegreatestpenn 5,000+ posts]

most of you dont know about motor Bl and saturation. example i can put in a dd coil that would handle 3k daily and 5k for burps easy and it burn it up in the tc9 with half that power, why because of the motor not the coil.
what makes the dd 3500 not handle as much power as the 9500? they both have the same coil, its the motor.

u mean magnet to start. heat dissipation does matter and the magnet plays a part in that, but 95% of the time the coil is what suffers not something mechanical when thermal limits are exceeded so the coil IS the key not the magnet

 

[SPLaudio 5,000+ posts]

power compression,hmm.

 

[thegreatestpenn 5,000+ posts]

alright if you have all the answers why are you asking anything in the first place????

 

[ciaonzo 5,000+ posts]

alright if you have all the answers why are you asking anything in the first place????

X2

We agree that the motor provides a degree of cooling for the coil but when you ask a question like how much power can a magnet take and it's not an issue of a lower grade NEO reaching it's curie temperature, it's clear that you need to do some reading. Start here:

http://www.audiopulse.com/know-how/subwoofer-driver-guide/myths-about-subwoofers/

 

[SPLaudio 5,000+ posts]

thought there was people here with more knowlege on this than me,sorry. i only know a little...

probley the most over power tc9 was the shocker xtream.

 

[sundownz Pro Seller]

The magnet assembly (steel + magnet parts) can have special cooling consideration - such as the DD 9500 vs. DD 3500 comparison.

The TC-9 motor is quite standard with no special provisions for air cooling.

You may have more success with it thermally if you plug up the pole like the Fi BP Power option.

 

[ciaonzo 5,000+ posts]

Considering most TC-9 based drivers are for SQ purposes I would say the cooling provisions are more than adequate taking into account the nearly 1.5" diameter pole vent, especially when mounted to a basket with large windows under the spider. I understand that blocking that vent will give you greater air velocity over the coil in the gap area but that comes at the cost of a substantial amount of turbulence noise being generated as well as restricted cone movement, not to mention a shift in parameters, should everything else remain static.

 

[sundownz Pro Seller]

Considering most TC-9 based drivers are for SQ purposes I would say the cooling provisions are more than adequate taking into account the nearly 1.5" diameter pole vent, especially when mounted to a basket with large windows under the spider. I understand that blocking that vent will give you greater air velocity over the coil in the gap area but that comes at the cost of a substantial amount of turbulence noise being generated as well as restricted cone movement, not to mention a shift in parameters, should everything else remain static.

Right - it is adequate for most designs using the motor but he is asking about the most power possible with the motor //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[ciaonzo 5,000+ posts]

Right - it is adequate for most designs using the motor but he is asking about the most power possible with the motor //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Fair enough. I suppose turbulence generated by the motor would not be of any great importance for burping systems. I guess if I were to go at it from that approach, I would put as many layers of flatwind in that gap as possible, since it's a pretty wide gap, to get BL and efficiency up. Not sure what the threshold would be for coil length before it ate into the efficiency again due to added mass. Seems like the wrong motor for those duties.

SPLaudio are you going to be burping in the 30-50hz region or the 50-70hz region?

 

[SPLaudio 5,000+ posts]

this is what i am talking about guys thanx. this is actually one of the smallest(motors) woofers i have built just something i have been wantin to try. i burp @ 52hz but wanted to turn this into a daily woofer and putting in a copper dd coil & quad progressive spiders, i rather have the copper for daily BEATING.

jake do you know the exact diameter for the vent? i can make a 6061 plug today cause the motor is at home and im off tomarrow til tuesday.

wasnt tring to get anybody riled up with the post i just build woofers for a hobby and keep me busy at work...

 

[sundownz Pro Seller]

I have one of the "thin" black TC-9 motors here right now - which one are you working with ?

I also have the "thicker" silver motor too from an SI Mag v.2

 

[ciaonzo 5,000+ posts]

All of my TC-9's with 1" slugs measure 1.375" with a caliper.

 

[SPLaudio 5,000+ posts]

got a black 1 with 2 .750" slugs, thanx.

 

[sundownz Pro Seller]

Mine measures 34.5mm -- so within 0.5mm of ciaonzo's measurement.

 

[SPLaudio 5,000+ posts]

ok so 1.358 will taper a little to make the press fit. thanx guys!!!