PDA

View Full Version : JBL 3155 + units impedance



martin2395
07-27-2015, 04:29 AM
I plan to use an OTL amp on my JBL's but I'm not sure what impedance will the amp see while using 2123H/2450J/2405H on 3155 CC'ed networks?

Has anyone did any measurements what the lowest impedance of this combination is?
The amp should cope with any load >5.6 ohms

Challenger604
07-27-2015, 05:04 AM
I plan to use an OTL amp on my JBL's but I'm not sure what impedance will the amp see while using 2123H/2450J/2405H on 3155 CC'ed networks?

Has anyone did any measurements what the lowest impedance of this combination is?
The amp should cope with any load >5.6 ohms

My upgraded 3155 for my 4355's, 2202H, 2441J, 2405H. The impedeance is 6.4.
I don't know if that can help!

martin2395
07-29-2015, 09:02 AM
Hi,
I was thinking more about what the lowest imepdance point is, as it changes with the freuqnecy.
The measured value at the input is DCR + resistance of the coils and caps:)

Odd
07-29-2015, 09:17 AM
4355 (http://www.audioheritage.org/vbulletin/showthread.php?10614-4355)

martin2395
07-29-2015, 01:40 PM
It says 5 ohm minimal but probably for the whole system, should be enough though.