Re: another css 10" build

68 liters tuned to 21 hz.
HPF changed to 17.7 hz with 1 db of boost at 25-30 hz.
Sub at Xmax with 300 watts.
One 4 inch port 29 inches long.
Maximum air speed is 26.8 m/s at 20 hz.

 

Re: another css 10" build

Can we tune it a little lower?:dontknow:

Hey Mike!!

Thanks:kiss:

:bigsmile:

 

Re: another css 10" build

Dropping the tuning to 19 hz ends up with you giving up more then you get in my opinion.

 

Re: another css 10" build

thanks again Mike!!:T

My next question is which way to fire the sub and port, front port and sub, down sub back port?:bigsmile:


this is a nice looking sub!!!

View attachment 12755

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View attachment 12757

 

Re: another css 10" build

Rodny -when following your links I'm getting a error message that says:

"Invalid Attachment specified. If you followed a valid link, please notify the administrator"

No sub pics.

Wow, alot of people working on 10" sub projects. Looking forward to seeing the finished product. Your work is always top notch.

 

Re: another css 10" build

lets try again

Thanks!!

 

Re: another css 10" build

Nice pics!

My next question is which way to fire the sub and port, front port and sub, down sub back port?

Front sub and port with the amp on the back is what I would personally do.

 

Re: another css 10" build

Front sub and port with the amp on the back is what I would personally do.

I agree with this man! Although I might be biased...

Rodny, whatever you do decide, I'll be following along closely to see how yours turns out. 68 Litres... what's that, about 2.5 cubes? that should give you a great sounding sub. My volume constraints will definitely impact my end results, but I wanted to build something smaller this time. I think with a sub that size you should easily be able to fit the driver and port on the front face. What are you porting with, 4 inches?

Did you have any design ideas, or are you open to any kind of suggestions? I guess it would depend on what the rest of your room and speakers look like, and how important it is that the sub mesh into the decor. What about finish? Wood, or paint? Standard big black box? (I'm now living vicariously through your project).

 

Re: another css 10" build

what do I need for a high pass filter?

 

Re: another css 10" build

The Bash 300 has various combinations of HPF's and boost by changing 2 resistors. The factory default settings are 17.7 hz with 1 db of boost at 25-30 hz. Lucky you, you're plug and play!

 

Re: another css 10" build

The Bash 300 has various combinations of HPF's and boost by changing 2 resistors. The factory default settings are 17.7 hz with 1 db of boost at 25-30 hz. Lucky you, you're plug and play!

:yay:

:T:T



thanks AGAIN MIKE!!!!

 

Re: another css 10" build

It's a "good" idea to seal if you can, but not totally needed. If the amp is sealed well to begin with then you'd benefit from boxing it by protecting it from the pressure waves from the driver - might be overkill in this instance.

boxing in a plate amp can very quickly eat up precious cubic inches - I'd suspect that the Bash 300 is sealed well already.

I did, however, never box in my ADA 1200 plate amp when it was inside my AS-15 Klone.
I had put it in a separate enclosure for the Heretic II and it crapped out on me... The best laid plans, huh?

(BTW, the ADA 1200 is repaired and should be in service in another week).

 

Re: another css 10" build

The Bash amps don't need to be separately sealed from the sub cabinet. Whether you do a slot or round port, just remember the amp requires 3.5 inches of mounting depth.

 

Re: another css 10" build

The Bash amps don't need to be separately sealed from the sub cabinet. Whether you do a slot or round port, just remember the amp requires 3.5 inches of mounting depth.

I will second this. My bash 300 does not leak and I didn't add any extra sealing. This was testing at excursion limits @20Hz. If there was a leak I am pretty sure it would have whistled .

I was worried about this because not all the connectors had silicon on them so I was particularly attentive to leakyness.

 

Re: another css 10" build

The only modification I was considering for my amp was adding another thin layer of gasket tape around the edge. The amp comes with some, but I may add some more, depending how it feels on the test fit. Boxing it in wasn't an option for me, since I needed all the volume I could get.

As you saw, I was close to going with a slot port, but decided to keep my 3" precision Port since it was a bit too late to revise my design. If you're building a fun project, maybe it would be good to experiment with a slot? I saw some nice looking Velodynes the other day that use slots, and it's certainly something I could live with. How about painting the box in a dark colour, but doing the slot in your motorcycle red, kind of like a big mouth? :1eye:

 

Re: another css 10" build

I got the amp yesterday so its time to start the project.

2.4cft plus port, speaker and amp, tune to 21hz, slot port 2"x6"x27.5" long :bigsmile:

 

Re: another css 10" build

That sounds like its going to be a great sub. Not really "big" in the grand scheme of subs, but certainly big enough to coax some performance out of that solid little 10-incher. Have you settled on the final dimensions and shape, or just the volume?

Wait... are you going to get crazy with this thing and make it as great looking as your IB manifolds?

 

Re: another css 10" build

That sounds like its going to be a great sub. Not really "big" in the grand scheme of subs, but certainly big enough to coax some performance out of that solid little 10-incher. Have you settled on the final dimensions and shape, or just the volume?

Wait... are you going to get crazy with this thing and make it as great looking as your IB manifolds?

So far the dimensions are 14"W, 18"H, 28"D, little over 3cft, I haven't decided on how many braces so the air space might change a little, I want to make the port removable just an case I want to change the tuning:coocoo:, I think I'm going to build two boxes one will be black and the other red:devil:, the same shape maybe one with round over bit and the other with a chamfer 45 or 30 degree bit or maybe mix:dontknow:, just want to build something cool and sexy:heehee:.

The paint its going to be automotive two stage, so it will be shiny:bigsmile:

I have some 3/4" Plexiglass so it might end up in one of the boxes with some neon:dumbcrazy:

 

Re: another css 10" build

 

Re: another css 10" build

Lol... I knew you were going to do something funky. I'm sure they'll both look awesome... then you'll have to pick up another driver and amp, so the box won't go to waste.

 

Re: another css 10" build

Uh-huh... momma ain't gonna like that funky too well... :whistling:

 

Re: another css 10" build

OK!!

this what I have so far.....

braces x 3

W/O the amp, whit the amp the total is 2.383cft is that good enough o I need to make it exactly 2.4cft?

 

Re: another css 10" build

Has the slot port volume been subtracted from the internal volume?

 

Re: another css 10" build

YES!!

You can see it in the chart 702.188

I'm using some material from parts express, Sonic Barrier 3/4" 3-Layer Damping Material, do I need to count for it on the air space??

 

Re: another css 10" build

YES!!

You can see it in the chart 702.188

Ah yes. I see now since I put my glasses on. :whistling:

 

Re: another css 10" build

Rodny, I think you'll be fine at 2.38 cf, but if you can squeeze another inch or something out of the depth you'd have it covered for sure, plus the volume for the damping material. I'm actually using that too (the leftovers from another project, so I didn't have enough to cover the entire inside). I think the general rule is if its open cell foam you don't need to subtract, but if its closed cell you do. Even open cell would eat up a little volume IMO, so I would maybe account for about half of what you are actually using?

 

Re: another css 10" build

I'm not familiar with it. As Owen stated, if it's open cell foam you don't need to subtract, but if its closed cell you do. I use egg crate foam in my builds.

 

Re: another css 10" build

I talked to one of the techs at parts express he said not to worry about the foam taking any space.

 

Re: another css 10" build

I talked to one of the techs at parts express he said not to worry about the foam taking any space.

It is actually the opposite right? Damping material makes the enclosure seem larger to the driver. Note that closed cell foam should not be used for this.

 

Re: another css 10" build

Now we know. :T

 

Re: another css 10" build

eyekode, I was thinking the same thing. Although it isn't as free flowing as other materials used to stuff enclosures (ie Polyfill), the open cell must do a little to help. I think its partly to help deaden any resonance or driver/port noise, etc. from echoing inside the box, and partly to help reduce the air speed within the enclosure which gives the driver the perception of a larger box. I believe that for speakers dealing with higher frequencies (shorter wavelengths) it should also help to reduce the effect of standing waves / backwave in the enclosure, but that won't be much of an issue for a sub.