4333/S300/L300 equivalent bandbass circuit
I have managed to come up with an equivalent bandpass circuit for the 4333/S300/L300 which negates the need to use the very expensive and hard to find tapped autotransformer.
If anyone is interested I will post the schematic.
Has anyone thought of using charge coupled technology in their 4333/S300/L300's?
If anyone is interested I will post that schematic as well.
1 Attachment(s)
Re: 4333/S300/L300 equivalent bandbass circuit
Here is the schematic.
It's voltage drive is a dead ringer for the original voltage drive as measured on December 16th, 1975.
Most of the components are available from Parts Express. The LF inductor is the 14 gauge perfect layer wound air core. For those who like the signature JBL bass hump at ~ 30 Hz you may need to tune the enclosure up a couple of Hz. All the MF inductors are the 18 gauge perfect layer wound air cores.
1 Attachment(s)
4333/S300/L300 with charge coupled tech
4333/S300/L300 with charge coupled technology
Charge coupled cirquitry for the S3100
I'm the happy owner of four S3100, but nevertheless on the look-out for improvements, so I would like so see the charge coupled cirquitry for this model.
1 Attachment(s)
Re: Charge coupled cirquitry for the S3100
Alrighty then!
Here's the stock schematic.
1 Attachment(s)
Re: Charge coupled cirquitry for the S3100
Let us know what you think if you decide to give it a try. I wouldn't mess up your stock networks, I'd build from scratch.
Use all polypropylene if you can instead of any NPE's.
For those who care, I believe the S3100 MK II is already charge coupled...
1 Attachment(s)
Another picture with 16ohm load.
sorry for this large picture. It's the first time to load a picture.