old-fashioned
11-28-2012, 06:30 AM
Hi!
Iīve bought various JBL 2213 woofers.
1st pair is reconed 2213H with the ferrite magnet.
One driver is producing a "tick, tick, tick..." noise at excursion above +-2mm.
DCR and Qts are different to the other one... So I have to get rid of them...
2nd pair is 2213 with AlNiCo magnet taken from an original pair 4311WX (factory painted black cabinet?!?)
The drivers seem not reconed. They have a different basket with slim bars.
The yoke vents have got many small slits producing turbulence noise.
The impedance curves are very similar, but Fs is more than 25% varying. American workmanship?
3rd pair consits of a 2213 and 123A-3. They both have AlNiCo magnets with identical broad bar basket like the 1st pair.
I red somewhere that 123A and 2213 are comparable. No way! All parameters are different, even the rise of impedance towards high frequencies.
Can I find deeply detailed documentation about the 2213 and 123A versions somewhere???
Thanks and best regards,
Andreas
Iīve bought various JBL 2213 woofers.
1st pair is reconed 2213H with the ferrite magnet.
One driver is producing a "tick, tick, tick..." noise at excursion above +-2mm.
DCR and Qts are different to the other one... So I have to get rid of them...
2nd pair is 2213 with AlNiCo magnet taken from an original pair 4311WX (factory painted black cabinet?!?)
The drivers seem not reconed. They have a different basket with slim bars.
The yoke vents have got many small slits producing turbulence noise.
The impedance curves are very similar, but Fs is more than 25% varying. American workmanship?
3rd pair consits of a 2213 and 123A-3. They both have AlNiCo magnets with identical broad bar basket like the 1st pair.
I red somewhere that 123A and 2213 are comparable. No way! All parameters are different, even the rise of impedance towards high frequencies.
Can I find deeply detailed documentation about the 2213 and 123A versions somewhere???
Thanks and best regards,
Andreas