Lab 12 Based Offset Driver - Mass Loaded - Transmission Line (OD-ML-TL) Design by Bj

[tb46]

Hi kees52,

Post #298: "Can akabak give a schematic like hornresp do?"

Not that I'm aware of. That's one of AkAbaks shortcomings.

Hope you'll be better soon.

Regards,

 

[kees52]

Hi kees52,

Post #298: "Can akabak give a schematic like hornresp do?"

Not that I'm aware of. That's one of AkAbaks shortcomings.

Hope you'll be better soon.

Regards,

Thanks

tooth is not better, pain is heavy now, dentis have not time for me, this is a dutch healthcare shortcoming as always.

People do not care for each other here.

I have taken a painkiller.

regards

 

[kees52]

I am been busy with drawning that box, but the long pipe is challence me, this because the box do go low for the movies.

I have to make it deeper so the pipe get lower, etc.

I am this far the rest will come.

regards

kees

 

[BP1Fanatic]

I am been busy with drawning that box, but the long pipe is challence me, this because the box do go low for the movies.

I have to make it deeper so the pipe get lower, etc.

I am this far the rest will come.

regards

kees

That long pipe is really no different than this flared port.

An externally hosted image should be here but it was not working when we last tested it.

 

[SY]

Political posts removed. We have VERY clear rules about this. If this is repeated, your posting privileges will be suspended or revoked.

 

[kees52]

I been just a little further, it is not so easy but time will heal.

S1 and the pipe are present, S2 is the last part who go through
above part of box.

 

[kees52]

And now ready, this some work, and sketchup is a strange program, do sometimes not what i want. (google problem? ego).

 

[thejessman]

I've built a couple of the enclosures using the plans from post #270. For mine I used a JBL GTO1214 driver, which I found to model well in the enclosure and is very reasonably priced for what it is. So far I couldn't be any happier with them. They have measured flat to below 20 Hz in my media room. The one finished in Duratex is mine, the stained one was built for a friend.

 

[kees52]

Very nice made box. looks straight from a factory.

I myself have not made it yet, to busy, but I go use this speaker in it.

Automotive speakers do often work well for sub,s.

 

[tb46]

Post #308

Hi thejessman,

Those are cool looking boxes. 🙂 I'm happy you like the response.

Regards,

 

[DrDyna]

Man, I need to remake mine in that configuration, that cab looks better short with that fold.

 

[BP1Fanatic]

Nice build!

 

[thejessman]

Nice build!

Thanks, I'm very pleased with how it came out.

 

[freddi]

hi jessman - what are the external dims on your JBL OD-TL?

 

[CLS]

It's in post #273.

🙂

Sim in #270.

 

[freddi]

Thanks!

 

[_henry_]

Thanks Oliver

Interesting...if I can get by without the felt I would be pretty happy as they don't give it away. Will try some light stuffing with fiberglass or pillow stuffing near the S1 end. Would be nice to reduce some of the calculated ringing above the LPF that could be audible. However don't want to reduce output.

 

[tb46]

Posts # 270/273/275/281

Hi Y'all,

Hornresp has come an amazingly long way since this was first simulated. I'll attach a suggestion as to filling and filtering for MOD3:

Regards,

 

[xrk971]

Jessman,

Awesome looking box there! Are you using them in stereo and do you find that they have more than enough SPL to rock the house?

 

[thejessman]

Jessman,

Awesome looking box there! Are you using them in stereo and do you find that they have more than enough SPL to rock the house?

Thanks for the compliment. I only have the Duratexed one for myself, the stained one I build for a friend so I'm only using one.

As far as having enough SPL to rock the house, its a pretty subjective thing. My opinion of it is I am very pleased with the amount of output they have. I'm powering mine with a Dayton 250 watt plate amp. I loaned the box to a friend to demo for a while and during a social event at his place he had it pretty much running wide open playing some dubstep. It definitely didn't leave me wanting for any more output, but like I said, "loud enough" is different things to different people.

I really couldn't be any happier with the design. Both the quantity and quality of sound you get out if it is going to be very tough to beat with anything of similar cost or size.