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In the Forum: Horn-Loaded Speakers
In the Thread: Cerebral and psychological evolution of amp matching for the Avantgarde Duo
Post Subject: 43489589283 - 3 + 1Posted by Tax on: 4/11/2011
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 Romy the Cat wrote:


Tax what are you willing to accomplish by DSETing Avantgarde Duo? As far as I can see in any playback action and decisions it shall be a straight line of sight to some kind of objectives. What objective you have in your mind what you are trying to DSET Avantgarde Duo that itself has an active LF section working independently? Do you have any specific sonic problem with Avantgarde Duo sound that you are trying to overcome by changing the OTP transformer of your amplifiers?  Did you try repositioning your amplifiers relative to North Pole – it will have the same effect.

I am not trying to be difficult but there are 43489589283 changes you can make in your playback, why do you feel that you need to change the output transformer?

The Cat


Hi Romy,

Thank you for the question.

I am currently using AN PSE 300B 18W amps with the Duos and would like some more depth to the LF. I recently borrowed an EL34 based amp and realised that the Duo was cable of much more bass than the 300B could offer. I also listened to a friend's Lamm ML 2.1 driving his Duos and the Lamm's bass is the best I have heard with the Duo. This has led me to look at other amplifiers that are using the 6c33c valve as I cannot afford Lamm's pricing. I also feel that the Lamm ML 2.1 (to my tastes) could do with a bit more 'humanising' in the vocal range. The quest for knowledge has led me to this forum and I have studiously read the Melq posts and am now considering the Melq Full Range as a viable option.

BTW: I have also tried the Yamamoto A-08S which is a 45 based stereo amp on the Duo's. Whilst it is a nice sounding amp I feel that the Duo needs more power, and that Avantgarde may be right when they advise that one should use a >10W amp. The Melq with 13-15W would be in this range.

The other issue I have with my current amps are that they use the 6SN& which I have substituted with the 5692 Red base RCA's. These are high gain and given the constricted layout of these commercial amps, I have been unable to get them to be quite on the Duo Omegas.

So if I can get advice or confirmation that the Melq running full range with the Lundahl is a great match for the Duo's, then I can start to collect the parts for a FR Melq. I note that the Duo subwoofer may be limited to 20Hz hence a larger custom OPT may not be a good value proposition. I would appreciate your advice given you have travelled this road or at least have given it a lot of consideration before.

The DSET option was based on the future possibilities and versatility one could have if I was to move away from Duo's towards a custom made non commercial speaker solution in the future.

Kind regards
Tax

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