Congratulations on your build. Would love to listen to them.
Thank you Saikat. And you're welcome for a demo
One change I'm thinking of is to change the local port pipes to good quality Jantzen Audio port pipes. In the process make them a little longer and see how it affects the sq.
After listening to Calpamos for almost 6 months those are my thoughts and understanding
1. First thing that I noticed that break-in period for any speaker which will be used for DIY projects is a must. The Faital Pro mid woofer have opened up considerably and sounds more detailed in the mid and lower mid sound. Previously I used a Focal Chorus floor stander which I remember sounded just fine out of the box and did not change in SQ as much as those Faital Pro mid-woofers did.
I guess ready made speakers go through a burn-in process in the factory itself.
2. As I could not afford the original crossover, as supplied by Humble home made hifi (HHH) site, I used the DBX 234XS crossover instead. Now I guess the passive crossover that HHH made for the Calpamos did something more than just dividing the frequency at a given point. It has also made some correction in some frequency which can't be achieved by an active crossover.
Here I am open for suggestion as what I should use to make those corrections. First thing that comes to my mind is an equalizer. Though average equalizer ruins the sound more than make some positive output.
Schiit Loki might be a thing I should be looking for? or something else??
3. High current amplification - this is one thing that baffles me most - is very much needed. The mid-woofer driver that I'm using have 98 db sensitivity and still it is sounding much better with a high current 600w per channel power amplifier (QSC 2450a) than my NAD 2100 power amps feeding them 110w per channel. I can't figure out why more power is needed for such an efficient driver. Though with the QSC it just blows my socks off
4. SQ wise I will never be able to go back to a speaker with a 6.5 in mid-woofer. This speaker that I built might not be the most articulate in sound- reproduction wise but that thing is much overshadowed by the scale and headroom. It has a quality that goes towards the live sound arena. Though I constantly feel that some amount of frequency shaping will really make those shine. I'm open to suggestions here
Will come back with more thoughts as the start popping. Any suggestion is welcome. Thanks a ton for reading
I'll try to find the specific kind of foam you suggested.
Do you think a little use of EQ to shape the sound will be helpful? As the original crossover which I could not afford to buy for the high price had some amount of frequency shaping component built into it.
Right now I am looking at two possible choices for EQ
1. Pro audio like BSS or dbx
2 Schiit Loki ( so called audiophile EQ with only 4 Bands)
How do one introduce the 'BBC dip' in the SQ if using only a 2 way electronic crossover?
Though I have seen in the past, any EQ does more harm to the SQ than do good. EQ used in the past are Sony and Technics. Both model were from 90's stacked systems.