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Existence of speakers are erased ... Is it the permanent proposition of many Audio files? I think that it is how to reproduce a natural sound. Akihabara shop Tomohiro Kawai
If it is called speakers, Almost all products will be box types. Otherwise, it is plane BAFFURU. A rear surface opening type without a back board. Front load horn, back load horn which exists in the large-sized speakers called vintage. It was made in the surely restricted restrictions. Product of so to speak compromise. However, we fight desperately somehow whether the heat in the concert hall, the live power of the JAZZ, and the feeling of hall of classic concert!
How to drive in the combination and an arrangement that I love Jazz. 1. Large scale. 2. It is not collected in a small way. 3. The direction comes out exactly. (Depth comes out and, sound comes out also in front) 4. If the vertical direction is also made, it will come out without limits (My hope ...). 5. It is very fresh. 6. And finally it is my sounds. I work checking six items. If the sounds from the box type to the come out near live with the scale which cannot think from the form... I think such a combination this time.

Speaker is JBLDD55000 Everest. 3way 3 speaker. Efficiency: 100dB. Impedance: 8 ohms. Use unit: 150-4H (woofer) 2425H (skoker) 2405H (tweeter).

Control amplifier McIntosh C26. if it compares with a present-day product The range was not large, but I chose by the depth of a middle-range.

Power amplifier. ALTEC 1590B. 200W+200W It is large-sized large output transistor amplifier.

CD player. MARANTZ CD-15. It is the product which carries out reproduction which has sense of stability very much by Swing Arm Mechanism.
First, if it is listened to only tied, 150-4H of DD55000 is not clear, There is also no thickness of a middle-range, a high-range and low-range come out gaily, So-called Don Shari state. Now, it does not arrange.
	Then, I decided first to change the polarity of a wall socket.
I substituted the wall socket of the power supply tap taken from the socket outlet. Then, in the result, while having withdrawn, a middle-range came to come out before and balance became considerably good.
	However, not clearness of low-range is there. A bass drum and the scale of wood bass are not clear, and feeling badness remains. Then I changed speaker cable from the soft thing to the Belden's hard.
It does not change; brightness was given to the high-range a little, Low-range is as usual.
C26-/ALTEC1590B are 117V specification for the overseas product. Then, I took the power supply of Pri / Power through a step up transformer.
This was effective. Power came all over the range. I can perform big reproduction. The slack of low-range remains a little, However. Can't I improve this condition somehow?
I decided to have made +/- of an input terminal into the contrary (reverse). As for the JBL speaker, it used to be good in many cases, (there to be an exception,)
This changed dramatically. The tightness of low-range came out and it was lost also with no clearness. Although the impression that the low-range became little thin, I can become somehow by adjustment of atteneter etc. * Please try the person who has JBL speaker and Low-range is not clear.

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