need help about my system(TAD and JBL)

[yogi]

I Build a Speaker is JBL 1975s kit darwing 8 Ft3,i have Tad 1602\ JBL 2445\JBL2420 and jbl 077。
and some guy tell me the TAD1602 sperker need Crossover is 450hz, but i want use at 800HZ, Who can give me some suggestions about this Subwoofer?? thanks a lot!

[yggdrasil]

First of all - one post/thread is enough.

http://www.pioneer-rus.ru/eur/produc...602/index.html

[yogi]

this is my 1st times statement ,and my English is big trouble, sorry!
thank you! i am also got this page .
but i need some information about the Crossover of 500hz-800hz! and what size box is best for TAD1602? thank you!

[yggdrasil]

The 1602 is similar to the JBL 2235, which have been crossed over ~1K in the 4430.

On this forum you will find info about the 2235, but not the TL1602.

If you have them, go for it. 800Hz can not be a disaster. If you don't already have them, you can't go wrong with the TL1601/1603 up to ~900Hz.

[pos]

Hello and welcome!
What horns are you using on the 2445 and 2420 ?

[yogi]

thank you!
my 2445J is using 2380A horns.(is Fiberglass make it)
and 2420 is 2312+2391(also My own DIY's using Fiberglass and plywood)
i don't konw,how to show the prctures on this page?

[yogi]

thank you, I've got the 1602, it is very expensive! in China 2235 aslo expensive and diffcult to find. so i must be to keep the 1602 in my system.
i want to try to using 1602 at 800hz with my 2420.
my 2420 is with 2312+2391 at 800hz is diffcult, Maybe i need change to a big horns(same like 2370)

The 1602 is similar to the JBL 2235, which have been crossed over ~1K in the 4430.

On this forum you will find info about the 2235, but not the TL1602.

If you have them, go for it. 800Hz can not be a disaster. If you don't already have them, you can't go wrong with the TL1601/1603 up to ~900Hz.

[speakerdave]

The 1602 never has been a common woofer, and it has been out of production for a few years, with no recone kits availabe, so there are not a lot of people who have experience implementing it. I believe it was primarily used in studio monitors in pairs and those speakers are often installed with EQ. The only specific recommendation I am aware of for this woofer by a knowledgable person is offered by Wayne Parham of Pi speakers, who recommends, for a maximally flat response, a cabinet in the 3.5-4 cu ft range tuned for just under 40 Hz. I have a feeling this is not what you are after.

As a practical matter, personally, if you are planning on using the 8 cu ft box in a fairly small room, I would try it sealed at first, just to see what happens. Unless you can get some expertise involved, the sealed box may be the best. In fact, Dr. Bruce Edgar thinks those woofers work best in sealed enclosures.

As for the rest of the system--what are you planning for a crossover? I hope you realized that when you gather a group of components more or less at random and try to make them into a speaker system you must build a custom crossover, and that is no trivial task.

[yogi]

thanks your information,my 8cu feet sperke has three bort 4"dia and 5"duct,i will try to Blocked it.
about crossover is too diffcult,What if finish the box I would prefer to buy 4333.

The 1602 never has been a common woofer, and it has been out of production for a few years, with no recone kits availabe, so there are not a lot of people who have experience implementing it. I believe it was primarily used in studio monitors in pairs and those speakers are often installed with EQ. The only specific recommendation I am aware of for this woofer by a knowledgable person is offered by Wayne Parham of Pi speakers, who recommends, for a maximally flat response, a cabinet in the 3.5-4 cu ft range tuned for just under 40 Hz. I have a feeling this is not what you are after.

As a practical matter, personally, if you are planning on using the 8 cu ft box in a fairly small room, I would try it sealed at first, just to see what happens. Unless you can get some expertise involved, the sealed box may be the best. In fact, Dr. Bruce Edgar thinks those woofers work best in sealed enclosures.

As for the rest of the system--what are you planning for a crossover? I hope you realized that when you gather a group of components more or less at random and try to make them into a speaker system you must build a custom crossover, and that is no trivial task.

[pos]

thank you!
my 2445J is using 2380A horns.(is Fiberglass make it)
and 2420 is 2312+2391(also My own DIY's using Fiberglass and plywood)
i don't konw,how to show the prctures on this page?

I don't think you should use both the 2" and 1" driver together in the system.
As you have a 077 tweeter you can use either one with good result:

option 1:
1602+2420/2312+077 would be similar to a L300 (schematics are available)
That horn is made to be crossed over at 800Hz, that should not be a problem

option 2:
1602+2445/2380+077 would also be an interesting system :
http://audioheritage.org/vbulletin/s...ead.php?t=1723



You can insert pictures on the page by using the "manage attachement" button.

[yogi]

Yes, I am more like the voice of 2420,But some guys think that 1602 can only be used 450HZ, That is why I try to use 2445J, I will not be used simultaneously 2 driver together.
I was in reference to jbl 3133 crossover , 800HZ and 8500HZ. it is for L300.
thank you!

[martin_wu99]

thank you!
my 2445J is using 2380A horns.(is Fiberglass make it)
and 2420 is 2312+2391(also My own DIY's using Fiberglass and plywood)
i don't konw,how to show the prctures on this page?

So nice to meet you here!
Pls post some of your system 's pictures,there are many experts on this forum that can help you

[martin_wu99]

Yes, I am more like the voice of 2420,But some guys think that 1602 can only be used 450HZ, That is why I try to use 2445J, I will not be used simultaneously 2 driver together.
I was in reference to jbl 3133 crossover , 800HZ and 8500HZ. it is for L300.
thank you!

It's no such necessary using both 2445 and 2420 together at all!
Pls pay more attention at 43 series,then you can learn a lot from them.

[hjames]

Yes, I am more like the voice of 2420,But some guys think that 1602 can only be used 450HZ, That is why I try to use 2445J, I will not be used simultaneously 2 driver together.
I was in reference to jbl 3133 crossover , 800HZ and 8500HZ. it is for L300.
thank you!

That's the combination I have currently in my modified L200 system. A 3133 crossover, 2234 Woofer, 2445j Mid with the walnut smith horn, and the 2405 slot on top. The 2420s are no longer connected when i hooked up the 2445J instead.