Home » Sponsored » Pi Speakers » jbl single 2035H vs. dual 2226J shootout
jbl single 2035H vs. dual 2226J shootout [message #35046] Fri, 08 February 2002 12:15 Go to next message
Sam P. is currently offline  Sam P.
Messages: 307
Registered: May 2009
Grand Master
Well, time to settle some questions about driver sensitivity. Both systems were measured with the rat meter on a tripod, @ one meter, on axis w/ the upper driver, raw readings "uncorrected". Beckman dmm was used to measure 2.83 vrms at the speaker terminals, into the nominal 8 ohm loads presented. The lower 2035 was disconnected, so this is a SINGLE 2035H vs. DUAL 2226J's, both in identical 4508 enclosures, 8 cu. ft. tuned to 40 Hz.

single 2035H:
50 Hz. 90 dB
60 Hz. 97.5 dB
100 Hz. 102.5 dB
nasty dip to 50 dB @ 235 Hz...floor bounce?
500 Hz. 102 dB
600 Hz. 102 dB
700 Hz. 99 dB
800 Hz. 99 dB
900 Hz. 106 dB
1000 Hz. 107 dB

dual 2226J's:
30 Hz. 86 dB
40 Hz. 92 dB
50 Hz. 96 dB
60 Hz. 95 dB
100 Hz. 100 dB
400 Hz. 101 dB
500 Hz. 99 dB
600 Hz. 99 dB
700 hz. 100 dB
800 Hz. 82 dB jbl data shows a dip here also
dip at 810 Hz. to 76 dB
900 Hz. 100 dB
1000 Hz. 101 dB

So I'd call the dual 2226J's a 100 dB system TOGETHER...implying a single 2226J would be 97 dB? 94dB?

From 100 Hz. to 800 Hz., the 2035 is sure giving it's big brother a good contest. It's an honest 100 dB, 8 ohm driver. And appears to be fully capable of "keeping up with" my HT fronts using the 4648A-8's.

Fun trivia...I can hardly hear 30 Hz. at 86 dB, you can sort of sense it...but the 4648A-8 will blow out my bic lighter at 6 inches away from the port...lots of air moving with a single watt input. Sam has a headache, and I wore 32 dB ear muffs, guess my skull is thin and sound got inside anyway :(

How the hell much does jbl have to pay people to stand around and input 100 watts and higher into these things? I must be getting old. Like Leonard Cohen said..."my parts that used to play, now hurt me instead". Or something like that. Sam

Re: jbl single 2035H vs. dual 2226J shootout - did you check Re? [message #35062 is a reply to message #35046] Sat, 09 February 2002 18:20 Go to previous messageGo to next message
freddyi is currently offline  freddyi
Messages: 48
Registered: May 2009
Baron
Hi Sam

JBL's spec sheet lists 3.9 ohm for 2035 dcr- so assumed they were wired in series - what's the story on 2035 dcr? - would help resolve sensitivity issue

Freddy

4638 system uses parallel wiring, [message #35063 is a reply to message #35062] Sun, 10 February 2002 07:27 Go to previous message
Sam P. is currently offline  Sam P.
Messages: 307
Registered: May 2009
Grand Master
so the SYSTEM z with two 8 ohm nominal drivers is rated as 4 ohms. I tested sensitivity with a single 2035H, ie one 8 ohm driver, connected to the amp. 2.83 volts, at the driver terminals, into a nominal 8 ohm z. But the v.c. DCR is 3.95 ohms. The 4638 system, with both drivers hooked up, was 2.0 ohms DCR, maybe a tough load for some amps, but who cares cause this one is being chopped up as a "donor" for woofers in my Pseudo 4 Pi Pro rear surrounds. Sam
Previous Topic: Seven Pi-18 or Ten Pi-18(long)
Next Topic: Re:pi4
Goto Forum:
  


Current Time: Tue Jul 16 02:52:15 CDT 2024

Sponsoring Organizations

DIY Audio Projects
DIY Audio Projects
OddWatt Audio
OddWatt Audio
Pi Speakers
Pi Speakers
Prosound Shootout
Prosound Shootout
Miller Audio
Miller Audio
Tubes For Amps
TubesForAmps.com

Lone Star Audiofest