i would need your help

[Sillver79]

please tell me what you think of this set up?

custom made pair of speakers with JBL 123A-1 Alnico 12 in. driver and a SEAS 27TFFC tweeter. Design is based from Troel Graversen Aperiodic loading L100 recreation. Crossovers are made of quality Solen Litz inductors and Fast Caps with a charged couple high pass filter design (9 volts battery).
Charged Coupled is a patent by JBL for ''bias'' capacitors and used in their Everetz and K9800 line.

The loading is with ScanSpeak Acoustivent Aperiodic ports (2) in the back of each cabinets.
Cabinet is 7 degrees back tilt for minimum phase shift low/high freq.
Bass response is way deeper than bass reflex designs and it is well balanced. HF response is based on the widely used in many speakers manufacturer designs of a well known 27TFFC Seas tweeter.

Cabinet is made of 19mm baltic plywood and front is Walnut veneer and solid pieces.
Bi-wring quality posts.

 

[Sillver79]

can someone give an idea of how these are put together i will be auditioning them tonight any thoughts??

 

[canuckaudiog]

It looks good in writing - listening will tell you all you need to know though.


Sent from my iPhone using Tapatalk

 

[Sillver79]

okay , i was just talking with, fellow canadian lol
sorry. what do you think of that custom JBL?

 

[Dadbar]

I don't have access to the response curves for these drivers....my gut feeling is that you will have a midrange hole with this combo.

 

[Sillver79]

I don't have access to the response curves for these drivers....my gut feeling is that you will have a midrange hole with this combo.

Hmm that is what is was thinking but the owner says that the 12``driver has a very flat curve and that where it left of the tweeter took over

 

[JoeESP9]

Listen to Dadbar!