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Hi Clotaire
Addition info for the HM210Z8 is that has some more modifications by G. milot in that is has a different inner spider suspension and a double outer rubber suspension on the later Nazca series than a standard Z8 would have. For the midrange Hm170z6 (custom Leedh version)I woud think it is impossible to find and one has to settle for a Z2 type wich is almost equally impossible to find, so you must have great luck finding these!
Oafem
Hi Oafem,
Thank you very much for your very intersting answers. I noticed that the Nazca’s HM210Z6 were different as they have a double suspension, which the technician who repaired mine confirmed…
I recently bought a pair of Z8 and they have a simple suspension indeed.
I too know that the HM 170Z6 are impossible to find which is unfortunate but i believe you can find Z2.
Someone also mentioned HM 170 Z0 for the Nazca…
Moreover, I discovered the filter for the HD3P could differ from one model to the other which therefore leads to a different frequency cut pattern.
Thanks again for all the information you sent.
Best regards,
Clotaire
Hi again Clotaire
For what I know there were only two versions of the HD3p filter for the Nazcas, one with a capsuled transformer (oldest) and one with the open transformer. Both filters had the same crossover frequency but the tranformers had a different impedance ratio to lessen the strain on the amplifier. The oldest filter had 4,7uF/.68 ohm as a input capacitor/resistor and the later one 2,2uF/1 ohm dito. The output series resistors 470 ohm+ 1Kohm were the same for both versions. Each of them sound pretty much the same but the later one´s a bit airier.(better) Hope you and others have some use of this info.
Greetings, Oafem
Hi Oafem,
Thank you very much for your help and very interesting explanations. My HD3P are equipped with the most recent version of filters but I also acquired an HD3P in case of a future failure and that one is an older version. The second one in the series!
However, a friend of mine, who has just bought a pair of Nazcas, was surprised to discover they contained 2 different types of filters-4,7uf in one and 8uf in the other!
We think this HD3P was not intended for a Nazca…Greetings, Clotaire
Clotaire,
I have had he opportunity to look inside 4 pairs + mine of Nazca´s as I have helped those people to refill their HD3ps and they have had only the two versions of filters I described. As 8uF would put an awful strain on the amplifier and likewise the tweeter it would seem unlikely to me that they are original. If you have one old (with screws on the front) or the newer one does not matter, they are the same. All the Nazca´s I´ve seen have the same filter for the midrange so there seems to be no logic in changing the HD3p filter that much. The 8uF version seems somewhat desperate to me, for whatever reason, and m. milot is not desperate. 😉
Oafem
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