In Reply to: JBL123-A/Klipsch 400 speaker build HELP posted by Cosmickat on July 28, 2012 at 13:20:20:
The JBL 123A No=0.68%, or 90.33dB/W/1M, the K55V/K400 is 110dB/W/1M.
30W seems kind of small on the woofer, unless you listen exclusively to little-girl-with-guitar type music.
What kind of crossover do you have?
The K400 is kind of lame, but if you damp it well it will help. The Crites tweeter should be crossed at 4Khz or so, 18dB, and a low-pass should be used on the K55V, 12dB at 4Khz. The level of the tweeter will need to be boosted to match the mid, alternately the mid can be attenuated. With the tube amplifier the tweeter and its network may be connected to the 8Ω tap, and the mid and its network to the 4Ω tap, this will give the proper levels between the two.
The tweeter should be mounted in the same plane as the mid, and delay will need to be used on the woofer.
The crossover between the woofer and the mid, I would probably try about 800hz or so to start with.
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Follow Ups
- RE: JBL123-A/Klipsch 400 speaker build HELP - djk 17:59:09 07/28/12 (7)
- RE: JBL123-A/Klipsch 400 speaker build HELP - Cosmickat 21:12:15 07/28/12 (6)
- 6k XO is awful high - badman 17:27:17 07/29/12 (5)
- RE: 6k XO is awful high - Cosmickat 22:02:10 07/29/12 (4)
- You'll get the impression of "More" in 3cu ft - badman 09:15:36 07/30/12 (1)
- RE: You'll get the impression of "More" in 3cu ft - Cosmickat 12:17:33 08/01/12 (0)
- RE: 6k XO is awful high - Cosmickat 08:43:38 07/30/12 (1)
- Ah, that's a better point - badman 09:09:47 07/30/12 (0)