If you do the CD EQing passively you will also gain a little in the SNR department.
Very nice looking speakers BTW. I have the same horn CD combo but haven't done a lot with it so far. It will be used for a large MTM.
Regards
Charles
Edit: I was a little unclear with my statement. I mean the use of a lead filter or parallel RC combination for the equalisation, not the already mentioned use of a series capacitor alone. This is what I will do with mine. This way the amp with about 40 Watts per channel will run at a higher level in the midrange, hopfully high enough to reduce crossover distortion. I guess most of the times when people claim that 16 Ohm drivers sound better than 8 Ohm drivers it is due to the amp running at higher amplitude. That does of course only account for push-pull and not for single-ended (which get more linear the lower the signal level).
Very nice looking speakers BTW. I have the same horn CD combo but haven't done a lot with it so far. It will be used for a large MTM.
Regards
Charles
Edit: I was a little unclear with my statement. I mean the use of a lead filter or parallel RC combination for the equalisation, not the already mentioned use of a series capacitor alone. This is what I will do with mine. This way the amp with about 40 Watts per channel will run at a higher level in the midrange, hopfully high enough to reduce crossover distortion. I guess most of the times when people claim that 16 Ohm drivers sound better than 8 Ohm drivers it is due to the amp running at higher amplitude. That does of course only account for push-pull and not for single-ended (which get more linear the lower the signal level).
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Yes Sir. Built and Designed from Scratch. It's a looker for sure (especially after its cleaned up
), .. in the minimalist senseD3a in single ended mode -> ElectraPrint InterStage Transformers -> 2A3 push pull -> Reclaimed Output Transformer from a vintage Fisher 800C receiver. All power supply caps are motor runs - no electrolytics.
The power transformer is outboard. I used to use tube rectification but it was really crowded underneath so I swapped to solid state diodes.
In other news, the replacement class D amp I ordered off amazon prime happened not to be in stock in the US - so it's shipping from China
. I'll have to make do for this weekends experiments. I did sell off my old minidsp and used the funds towards the purchase of a minidsp 2 x 4 HD . This has USB input and that will allow me to use my PC or my raspberry pi as a HI-FI source without resorting to another DAC. Maybe I should sell off my DAC too More results to come this weekend
You won't regret that horn - CD combo.IT's very nice sounding .
I'll figureout what I want to do re. crossovers once I have a chance to measure. Might be needing some help from the friendly folks on this forum if I decided to build a passive crossover.
Too busy with life.
In retrospect, here are the shortcomings of this horn
1a. No real low bass. The ported mod + boost results in lower bass, but it isn't as impactful as real horn loaded bass (at least to me - glowing reviews elsewhere on the web notwithstanding)
1b. Adding my horn loaded sub (table tuba) yielded an excellent match - really complemented the midbass horns (even when I (as an experiment) high passed the horn sub at 45 Hz) - lending further weight to 1a.
1c. Doing some horn resp simulations, if i reduce the back chamber size by 1/3 - 1/2 - possibly using styrofoam blocks, the reactance annulling should bring up the midbass at around 70 Hz or so with a steep roll off below that. Might be worth a try, expecially since I intend to use this horn with a sub
1d. I swapped in crites cast frame drivers. They go a little lower in bass than the kappa 15c but the (cheaper kappa 15c) sound subjectively better overall and do midrange better.
2. I would like to get the CD horn to go about 100 - 150 Hz lower - i.e. around 400 Hz as I feel the transition with the midbass horn will be even more seamless. Right now, certain notes can be suppressed.
I doubt this driver / horn is the right combo for this task. Might have to consider other alternatives.
Once I have a little more time on my hands, I'll continue with this project
If you have any questions in particular, feel free to PM me.
Hi
I tried this with the crites cast frame woofers too with the same results . Not sure why the stamped vs cast frame woofers should vary so much in qts (see link). Maybe I should measure mine
https://community.klipsch.com/index...s-cw1526cf-ts/&do=findComment&comment=1731834
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