I was trying to strategize what would I do it tomorrow someone get in touch with me and offer my $50K. In another words what would I do to convert the Altec 19 to Cetla Ledom?
This is an interesting discussion itself as it gives a blueprint for me what might be done with my Altecs closer to the next winter. For sure the people who know me do understand that my proposal to rebuild to somebody for $50K I not really my desire to practice audio enterprise but rather my desire to piss the Altec self-proclaimed aficionados. If you look at the Altec sites then you will see how the fucking idiots got pissed – I do experience a pleasure to tease a stupid angry dog with a plastic bone. I wools never do it with Cats – they are noble creatures but dogs, in particularly stupid barking little retarded irate dogs with no sense of own identity – they beg to treat them with contempt. You got the picture.
Do not look at Russian dictionary trying to figure out what Cetla Ledom 19 is. The name is just revered reading of Altec Model 19 from right to left. So, what the Cetla Ledom 19 would encompass?
As I said I do like the Altec appearance, particularly with my fireplace in my unused room but the bind with mint condition pre-existing Altec 19 might be was not the best idea. There is a guy at eBya with user name ‘aquariumsolutions’ and he makes very good replica of the Altec 19 cabinets. The great thing about this direction that he can made for $700 a new boxes with minor adjustment in the dimension to accommodate the changes Altec 19 to Cetla 91. I have no interest to do it as I have already my Altec 19. It is what it is and I will stick with it.
The Cetla Ledom 19 will be 3-4 way acoustic system. The people who read my site and who have own brain/ear do understed that any more or less serious horn installation imply no less than 5 channels but the Cetla Ledom will not be serious speaker it will be a good speaker for $50K or a good speaker for my fireplace room love to watch fire and to listen something like “Amused to Death”.
The very first step that must be done with Altec 19 is trashing the horrible Altec horns and introduction of normal lower MF channels. This will let the bass driver do not go to ridicules 1000Hz. So, here is how I see the Cetla Ledom complete:
1) Bass channel with 416 drivers as it is. The Altec 416 is a very good driver, for sure very stupidly used in the Model 19 type enclosure. I will keep it however as is with 250Hz lowpass second order. The key is to use Cetla Ledom’s bass section will be the amplification, read about it below.
2) Lower MF channel. This will be my 18-sell multicell horn with JBL 2490 driver. I decided do not vandalize the appearance of my Macondo, so the multicell goes to the Cetla. I will re-paint it to wood color to match the Model 19 box and it will be it. The channel I presume will be carrying from 250 to 1000Hz, something sort of my Fundamental Channel at Macondo.. It will take HF out of the bass channel and it will take LF out of MF channel.
3) The MF channel. It will be Vitavox S3 or less likely S2 in the Vitavox “narrow” horn. Vitavox had 3 own horn and the “narrow” one I find was quite nice. Not as good as fast opening spherical but still acceptable. It will be high passed with whatever order and location that would give proper integration of it with 2490 and multicell. I think it will be somewhere around 1000Hz but I do not know the details yet. The MF horns I plan to put in the same location where the Altec has own MF horn. The mouth of the Vitavox horn are the same (near identical) size as the Altec opening for MF compartment.
4) At the very top it will be RAAL 101dB sensitive ribbon. I have them as left over from some kind of project that I do not remember about and it will do fine. The HF will be sitting above multicell and will kick in at 12kHz
5) The HF, MF and Lower MF will be time-aligned
6) The Cetla Ledom will be bi-amped. The HF, MF and Lower MF that are all above 108dB sensitivity (ribbons so not need to have sensitivity match) will be driven by one amp with passive filters. The Bass channels will be driver by dedicated amps with ability to dial it the amp dumping. If somebody pays $50K then it will be completed 4Ch Class A SS amp with adjustable output impedance for bass amp – 416 driver is supper sensitive to loading in this configuration. If I leave the Cetla for myself then I will be using whatever I use and will not any by-amping as I will not need “proper bass” from this thing.
I think what I describe is a reasonable setting and I do not think that a Moron for his $50K will be able to get from the industry-sponsor speaker the Sound that he will be getting from Cetla. Tonally and dynamically it will be far beyond what the today gasoline-made driver are able to deliver. I will make sure that the complete speaker is well-balanced.
"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche