4345 Crossover Parts FS

[RC Driver]

There are the necessary components for this crossover:
http://www.ebay.com/itm/271832441838?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
http://www.ebay.com/itm/271810103507?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

[BMWCCA]

There are the necessary components for this crossover:
http://www.ebay.com/itm/271832441838?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
http://www.ebay.com/itm/271810103507?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649

Thanks for reviving one of my favorite threads!

As a point of order and propriety: Do you have an interest in the products as the seller, a satisfied user, or otherwise??
Inquiring minds want to know.

And welcome to the LH group.

[RC Driver]

Thanks for reviving one of my favorite threads!

As a point of order and propriety: Do you have an interest in the products as the seller, a satisfied user, or otherwise??
Inquiring minds want to know.

And welcome to the LH group.

I'm a seller of those details. 2.5 years ago I made and installed this biamping crossower in my JBL-4345. Very good step ahead.
I'm living with this version more than 1.5 year with pleassure and satisfaction.
Next I found autotransformers and I replaced the aircore inductors.
Autotransformers are hard to find - it is necessary to make like order.
Improvements may have been but at the level of self-hypnosis.
But to return to the air core inductors I did not. Laziness.
The some details lying of the year - maybe anyone be required.
Participants of the forum - an additional discount.
My schematic now:
65191

[RC Driver]

Some photos:
651926519365194

[ivica]

I'm a seller of those details. 2.5 years ago I made and installed this biamping crossower in my JBL-4345. Very good step ahead.
I'm living with this version more than 1.5 year with pleassure and satisfaction.
Next I found autotransformers and I replaced the aircore inductors.
Autotransformers are hard to find - it is necessary to make like order.
Improvements may have been but at the level of self-hypnosis.
But to return to the air core inductors I did not. Laziness.
The some details lying of the year - maybe anyone be required.
Participants of the forum - an additional discount.
My schematic now:
65191

Hi RC Driver,

May be I am wrong, but here using auto transformer, I think that You have take in account the auto-transformer inductance at the secondary output....
so may be to simulate the response of the network with and without the transformer....

regards
ivica

[RC Driver]

Hi RC Driver,May be I am wrong, but here using auto transformer, I think that You have take in account the auto-transformer inductance at the secondary output....so may be to simulate the response of the network with and without the transformer....regardsivicaThose autotransformers I ordered at Moscow' workshop. Master made computer' calculation specifically for 4345 speakers. Very good English iron. Certainly looks not so good, but working fine.When I ordered autotransformers I mean the original crossover 3145 using autotransformers too. But this is very expensive way :-(Here the photo and schematic of the first version:652006520165208

[ivica]

Those autotransformers I ordered at Moscow' workshop. Master made computer' calculation specifically for 4345 speakers. Very good English iron. Certainly looks not so good, but working fine.
When I ordered autotransformers I mean the original crossover 3145 using autotransformers too. But this is very expensive way :-(

Here the photo and schematic of the first version:
6520065201
65202

Hi RC Driver,

Are You sure that connection pin 2 and 3 on the L-pads has to be connected in the way as shown on the schematic.
I would expect that the wire between pins 2 and 3 has to be cut.

regards
ivica

[RC Driver]

Hi RC Driver,

Are You sure that connection pin 2 and 3 on the L-pads has to be connected in the way as shown on the schematic.
I would expect that the wire between pins 2 and 3 has to be cut.
regards
ivica

Yes, off course. This is mistake on schematic. Big sorry.
I did't change any other details in 4345 except networks.
I use original L-Pads, wires and terminals.
I can't to change schematic in post 3.
Sorry again.
Question - [email protected]

[ivica]

Yes, off course. This is mistake on schematic. Big sorry.
I did't change any other details in 4345 except networks.
I use original L-Pads, wires and terminals.
I can't to change schematic in post 3.
Sorry again.
Question - [email protected]

Hi RC Driver,

may be a model of auto transformer here, and the inductivity influences would helpful

http://educypedia.karadimov.info/library/1_11.pdf

regards
ivica

[RC Driver]

After some time I changed a topology my version.
I've made some mistakes.Here is ver.4:
66371
I can say this is very good result :-)

[Cachurro]

hi can you help me? I need to make a list of the components that I need to buy the components thanks

[darkmatter]

Commenting on the bass section of this crossover the 5.4mH inductor and the 80uF cap define the 2nd order filter shape, the shunt components 20uF cap and 7.5 ohm resistor look like a zobel network, but what does the 10uF shunt capacitor do?
Thanks
DM :)