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jacoviii

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Posts posted by jacoviii

  1. 10 hours ago, glens said:

    Impedance and resistance are (most) only ever the same in a DC circuit.  Sticking a multimeter on the binding posts satisfies that condition since the meter's (almost invariably, unless you've spent near $1k on the instrument and set it accordingly) using DC to derive its measurement.

     

    All you did was perform a "go / no go" check and it has little bearing on what the variable impedance vs. frequency ends up being.  To measure impedance over frequency as in the posted chart requires a more elaborate setup.

     

    If the AVR of choice is "4 ohm stable", you're surely good to go no matter what. 

     

    Actually, I'm surprised at your reading on the HF terminals.  It should read very much higher, if at all...

    I did re-check the HF and it slowly went way up.

  2. I understand that a driver's ohm changes as it plays. but if at a rest if they are 3.4 ohms that is it. Most 2,4,8 ohm measured at the driver do not read 2 ohm (1.8)  4 ohm (3.4). and so on.  If the RF7ii read 3.4 ohm I would take it that when I'm comparing AVR or separates amps. It would be best to look at the 4 ohm. This is important to me due to not all amp scale power output the same from 8 to 4 ohm. So if amp A has a good 8 ohm watt output (135w @8  & 160w @4) but amp B has  (125w@ 8 & 180w @4).   This is why knowing  is so important. 

  3. OK so I have been AVR shopping and basing power output as 8ohm  load for the RF7 ii. I got a idea to check the 7's.  So with the plates on the binding posts I get 3.4 ohms. With the plates off I get 4ohm on the HI and 3.4ohm on the lows. What am I missing. They say 8ohm compatible in the specs.  Sorry car audio guy and Bi-amp & inline cross overs are not my norm.    

  4. Ok so it's time to ditch the HK 340. My local shop is pushing Yamaha AVENTAGE RX-A1070 they say it has a fuller sound then the rx-v line and will not sound too bright. I was leaning to the Onkyo/ Integra. I heard about the HDMI issues and the first thing out of the local shop was they dropped the Integra line do to it.  The new AVR will be running RF-7ii  , RC62 , S1 and RF62  

    I do not have a sub as of yet.  I will probably buy from accessories4less  looking to stay @ $650 or less at there price not new in store MSRP.  The room is 18x 25 vaulted vaulted ceiling 11ft  

  5. ok well i went to BB and they had a set of S1 new in box for $200 so i got them for the surround of my 5.1

    so that will leave me some extra $$ for the RF??

    what rf should i get

    the room is 18ft x 26ft vaulted ceiling 11ft

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