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 on: March 25, 2018, 06:59:22 PM 
Started by Capt. Z - Last post by Ed Schilling
Dieter, of course you can post anything here about anything.

Ok, the battery test will show if the woofers are in phase with each other and you can identify the "positive" wire. Now, that will tell you nothing about the midrange or tweeter polarity. For that you will have to look at the xover to see if they are wired the same. Keep in mind it is not uncommon for the tweeter or midrange or both to be wired opposite polarity to the woofers but the speakers should both be wired the same. You'll need to look at the xover to know for sure.

It also could be that "it is what it is" and they just are like that.

 on: March 25, 2018, 02:56:15 PM 
Started by Capt. Z - Last post by 2wo
Have you tried switching absolute phase, meaning switching the + & - on both speaker cables...John 

 on: March 25, 2018, 12:46:34 PM 
Started by Martin1 - Last post by Henry
Here's the updated web address for the Mivera amp:

 on: March 24, 2018, 02:57:43 AM 
Started by Ed Schilling - Last post by theophile
This will be interesting.

 on: March 23, 2018, 11:18:03 PM 
Started by Ed Schilling - Last post by Ed Schilling
Hey Tony, better heal up before May. Smiley

Ok, the review will be out very soon, this weekend or early next week. The delay was just due to Arthur changing his system around and waiting on his speakers and other stuff to happen. I reckon he'll describe the changes to his system but I do not know for sure.

I have no idea what he'll say. We don't talk about that. I have no idea what his opinion on the silver unicrystal vs. the copper unicrystal.

I'm very anxious to see what he thinks of the dual supplies and fancy wire. Nothing else can be done to the circuit that will improve it. So, this is it, other than a fancy case there is nothing else i can do to make it actually "better".

 on: March 23, 2018, 03:42:24 PM 
Started by Martin1 - Last post by Martin1
thanks to all for the suggestions...i have not decided yet..i am tying to repair the old integrated amp i had..i was told it was beyond repair,but now it is in a repair shop and they are trying it is difficult though they say due to much wrongdoing from other repair shops they is a gryphon callisto. But with that i lose the advantage of the truth....i have been trying the nad c350 and the quad 405...maybe the latter is better. not much difference though (always using the truth as a preamp..the pre of the nad c350 can be has a power in). I used the quad 34 as a preamp...and the truth is better i i wonder if the power amp quad 405 is also appropriate for the truth...i think it is quite ok and i am doing with that unless i see an amp it really seems better option..I also enquired about Romeyn amps..which i think use a module similar to the ICE power suggested by Henry...For lack of time i haven't dealt more into it. But it seemed a good option..anyone had an experience with a Romeyn amp? ANother option i considered is buying a set Ed suggested from aliexpress which is very very affordable (forgot th emodel, but i can find out)...or the coincident frankenstein (used) which is much more expensive but a good deal i think compared to new...but i never heard any of those, nor a set amp...and 8 amps maybe are not adequate for the 87-89db speakers i have (audio physic virgo mainly and thiel cs 2.3 as an option) i am mired in this situation unable to decide or just let it go and think that with the quad 405+truth i am well served enough..

 on: March 23, 2018, 11:49:20 AM 
Started by Martin1 - Last post by Henry
Link please! Smiley

Here you go:

It isn't listed in his shop, so you just leave a message and he'll reply with the info.

Here's a link to the thread on ac regarding this version:

 on: March 23, 2018, 05:43:18 AM 
Started by Capt. Z - Last post by Capt. Z
Hi Ed;

Hope this is OK to ask a Technical Question about a different Speaker Make.

Just bought some nice looking BRAUN (A/D/S) SM 1002 of flea-bay. Speakers had no binding posts, just some unmarked wires coming out the back.

I added some binding post and determined polarity via a small battery and watching which way the woofer moved. Also there is a red cross on one terminal of the woofer, so I am sure I got that polarity right with the woofer.

Did a Phase test with a Test CD and did not get any 'tightly focused' voice coming from the center when the signal was in phase. When the signal was out of phase it just sounded more diffused.

Took another look inside both speakers. I see 3 BLACK wires, one going to each driver, so I assume they are the NEGATIVE lead. Then each driver has a distinct color wire going to them. Can't see how the traces run on the x-over board.

When listening to music I can hear clearly how music is coming from the left and right speaker, but I don't hear too much coming from the center. Solo instrument sound somewhat diffused on the left and right side.

ANY SUGGESTION on how to proceed?

PS. Should mention that the bass driver have new surround foams, so my first thought was that the repair men wired the bass woofer incorrect, but then i ASSUME that the colored wire is the POSITIVE side.


 on: March 23, 2018, 04:19:21 AM 
Started by Martin1 - Last post by Capt. Z
Martin. Have you decided on what amp to get?

 on: March 22, 2018, 11:00:47 PM 
Started by Martin1 - Last post by Ed Schilling
Link please! Smiley

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