Here is your chance to learn something.
This is for all the objectivist that think parts are parts, wire is wire, all capacitors are the same, yadda, yadda, yadda....
This is a continuation of this thread regarding the upgrading of parts quality in this inexpensive little speaker from Behringer. http://www.audiocircle.com/index.php?topic=83841.0
It is the B2031P "The truth!" The real truth was that it needed some help. Follow the thread:
Read about the speaker here: http://www.behringer.com/EN/Products/B2031P.aspx
Okay, I measured the values used in one of the stock crossovers and made an identical crossover to the stock one using Sonicaps, a Mills resistor and an Erse XQ air core inductor.
One main switch is used to switch the shunt components in or out of the circuit from each network being used or not used. I later added a switch in each woofer circuit of each network to switch each entire circuit in or out.
The crossover are mounted inside and the three switches are mounted on the binding post cup.
As you can see the cabinets have also been lined with No Rez to remove some of the coloration of the cabinet resonances that were masking some of the bass and lower mid-range. Some additional fiberglass insolation was used as well and install behind the woofer.
There are tube connectors used for the upgraded network and the stock binding post are used for the stock network.
All switches up towards the stock binding post, and the stock binding posts and stock crossover is used. All switches down, and the lower tube connectors are used with the higher quality crossover parts.
I also had my good friends at Electra Cable make a nice set of speaker cables with dual ends. It has standard banana plugs for the stock crossover and the male studs that fit the tube connectors.
So you use one set of plugs or the other and not both at the same time. So switching is pretty quick. Move some connectors form one to the other and flick three switches.
See Electra Cable tube connectors here: http://www.electracable.com/tubeconnector.htm
The cables and crossover have been playing now for several weeks and have now settle in. That's right, they needed burn in time.
The difference between the two networks is very apparent (night and day), so if the nay sayers can't hear this level of differences then they probably really should consider hobbies outside of high end audio.
I am willing to let these be sent all over the country to various listening groups. Someone receiving them must be responsible for them though. So whoever that person is will need to contact me with credit card information needed for securing them while they have them.
The next person or group in line will need to contact me to do the same.
I will then forward shipping information to whoever has them and they (or that group) will be responsible for shipping them to the next auditioning person or group.
Let the fun begin!