Hi,
I'm planning to build Simple SE amp and have a hard time deciding on the OPT.
Should i use CXSE25-8-5K or GXSE15-8-5K ?
The price difference between those two is almost $200 (incl. delivery) which is quite significant.
I'm planning to use Overnight Sensations speakers.
Also - would Triad Magnetics C-14X work well as a choke?
Thanks!
I'm planning to build Simple SE amp and have a hard time deciding on the OPT.
Should i use CXSE25-8-5K or GXSE15-8-5K ?
The price difference between those two is almost $200 (incl. delivery) which is quite significant.
I'm planning to use Overnight Sensations speakers.
Also - would Triad Magnetics C-14X work well as a choke?
Thanks!
I have no experience with either, but I'd prefer the bigger iron. Have you read George's notes on OPT's?
Tubes and Applications | Tubelab
Michael
Tubes and Applications | Tubelab
Michael
I have two SSE's one of them has the CXSE25-8-5K opt's and the other has the GXSE15-8-5K.
Of the two I have a slight preference for the bigger opt's mainly because of the more deep and
solid lower end at any power level. For the rest of the frequency range I don't detect much difference
between the two.
I can attest to the fact that the shipping cost to Canada is very high but think of
those builders in Europe, Asia or Australia where shipping can be equal to or even higher than
the cost of the product.
The Triad Magnetics should be okay, I got my chokes from Edcor.
Of the two I have a slight preference for the bigger opt's mainly because of the more deep and
solid lower end at any power level. For the rest of the frequency range I don't detect much difference
between the two.
I can attest to the fact that the shipping cost to Canada is very high but think of
those builders in Europe, Asia or Australia where shipping can be equal to or even higher than
the cost of the product.
The Triad Magnetics should be okay, I got my chokes from Edcor.
Last edited:
Thanks a lot! This is a reply i was waiting for.
Few more questions
1. Did anyone installed VU meters on Simple SE? Does it affect the sound in any way?
2. What about installing voltmeter panel to see tube voltages? Wouldn't it make a perfect sense together with cathode bias resistor selection switch?
3. Is there a recent up to date part list available somewhere?
Few more questions
1. Did anyone installed VU meters on Simple SE? Does it affect the sound in any way?
2. What about installing voltmeter panel to see tube voltages? Wouldn't it make a perfect sense together with cathode bias resistor selection switch?
3. Is there a recent up to date part list available somewhere?
The parts list was never updated as far as I know. Since 2011 three additional parts were
added to the new updated board but these are not on the parts list.
On the board they are marked D3, D4 and TR1.
If you read through this thread you will get the info you need on these.
http://www.diyaudio.com/forums/tubelab/266162-simple-se-signal-lost-driver-tube-2.html
added to the new updated board but these are not on the parts list.
On the board they are marked D3, D4 and TR1.
If you read through this thread you will get the info you need on these.
http://www.diyaudio.com/forums/tubelab/266162-simple-se-signal-lost-driver-tube-2.html
2. What about installing voltmeter panel to see tube voltages? Wouldn't it make a perfect sense together with cathode bias resistor selection switch?
I installed voltage test points in order to monitor voltages using a dmm...
Looking at your speaker choice, I noticed they have a sensitivity of 83db which is not exactly efficient for tubes... you'll be able to drive them, but the sound may not be the greatest, especially in triode mode. Tubes are happiest when the speaker sensitivity is in the upper 80's (>88db, somewhat happy) into the 90's (very happy).
I installed voltage test points in order to monitor voltages using a dmm...
Looking at your speaker choice, I noticed they have a sensitivity of 83db which is not exactly efficient for tubes... you'll be able to drive them, but the sound may not be the greatest, especially in triode mode. Tubes are happiest when the speaker sensitivity is in the upper 80's (>88db, somewhat happy) into the 90's (very happy).
To the OP: do you already have the Overnight Sensations, or are you planning a build? You might consider the Overnight Sensations MTM instead, which have a higher sensitivity (estimated by the designer to be 86-87 dB). I built a pair of those and was really happy with them with my SSE before I built a new set of Two Pis.
--TWH
I've seen it... smart idea... i just wanted to see if it is possible to add panel meters showing those voltages instead of messing with multimeter. and if they are the same style as VU meters it would add some kind of 'a cool' look.I installed voltage test points in order to monitor voltages using a dmm...
(very happy).
i'm done with the crossover and the enclosures are already primed several times. too late going to MTMTo the OP: do you already have the Overnight Sensations, or are you planning a build? You might consider the Overnight Sensations MTM instead, which have a higher sensitivity (estimated by the designer to be 86-87 dB). I built a pair of those and was really happy with them with my SSE before I built a new set of Two Pis.
--TWH
but i also have some Axiom Audion M3's and my favorite Energy Veritas V-Mini's.
And it the amp goes well, i just need to build some new high efficiency speakers
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