2K Club - QQ Super Nova
- Apr 12, 2009
- Woerden, The Netherlands
Thanks for the detailed respone Chuck. I was not aware of all these safety regulations and the cost involved. Makes sense to go with the external adapter, instead of increasing the price of the unit.Hi Robert
Yes this is the same consumer pre amp/ decoder we have talked about before, partly based on the pro encoder/ decoder - without the encoder section, isolated XLR inputs etc. I think it will also be in the rack mount format.
The whole question of external plugpack vs internal transformer is a complicated one. The advantages of the external plugpack are:
1 A bit cheaper as approved plug packs are available to OEM at around $3 - $5
2 Simplifies and makes cheaper CE and safety approvals (costs say $16K in Australia)
3 Typically lowers induced hum into sensitive phono stages
4 Simplifies international Voltage changeovers as most plug packs are universal.
5 Adaquate filtering on the main board will knock out any 100 Mhz and above switching hash - some audiophiles are "dickheads"
Frankly for the pro unit we also ran out of internal space for a Lumpy iron transformer. With the metal case hifi pre amp/ decoder I really am not sure yet as to what direction we will go on this issue- I welcome suggestions for QQ members
What do you think the advantages of a variable crossover are for a pre amp????
As for the cross over, I am not talking about the pre amp section. I understood that the SM has a fixed crossover of 80Hz. My speakers go to around 45Hz, at the moment I have them set to large and a high level connection to the sw. In the other thread you offered a hard coded crossover other than 80Hz. But if the SM is 80Hz , not a deal breaker for me and to be honest, I am not really sure what the best cross over would be in my situation, as I just take the 45Hz from the manufacturer, Have not done any measurements to determine the real low end. If the criss over was variable, people could experiment with it, to suit there own situation.
Anyway, as said, if it is 80Hz, I am ok.