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 NEW  Bruce Heran outlines the details and construction of his simple DIY 6DJ8 (ECC88) Tube Hi-Fi Headphone Amplifier Project.

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PostPosted: 11 Jun 2008, 22:19 
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Joined: 06 Jun 2008, 12:22
Posts: 42
Location: NY, USA
Hi, I have a Sony home theater surround sound receiver. It is 5.1. The problems is my main speakers are 4 ohms and the center and surround speakers are a different brand and 8 ohms. The subwoofer is a different brand altogether. So the problem is that the dialogue (center channel) is quiet, so I turn it up. Then the action sounds are too loud so I have to turn it down and so on. How do I get them all to the same sound level?


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PostPosted: 12 Jun 2008, 19:36 
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Joined: 28 May 2008, 21:53
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Location: Winnipeg, CANADA
I have a 6 year old Sony HT amp and it has a "Test Tone" feature. What is does is play a single frequency tone in the speakers one at a time. Then I use a Radio Shack 33-2050 SPL meter positioned where one sits and then adjust each speaker level get the same SPL in each. If you do not have a SPL meter, you should be able to do a reasonably good job by ear.

If your amp does not have the test tone feature, burn a couple of fixed tones to a CD. Something in the order of 1kHz.

You really should go through the manual as they typically have some good tips on how to adjust and setup a home theater.

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[ DIY Mains AC Power Cable Cord ] - [ Gobo LM1875 Amp Kit ] - [ Tang Band D4-1 Horn Speaker Kit ] - [ Monoblock Push-Pull KT88 Tube Amp Kit ]


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PostPosted: 13 Jun 2008, 21:38 
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Joined: 06 Jun 2008, 12:22
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Location: NY, USA
Thanks. I found the test tone feature and matched them up by ear. It is much better now. It would be interesting to check against a sound meter to see how close I can get with my ears. Thanks for all your help.


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PostPosted: 24 Jun 2008, 17:24 
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Joined: 04 Jun 2008, 20:59
Posts: 2416
Location: Arizona, USA
Hi, I have a Sony 6.1 and inaddition to the tone it has a built in self calibrating feature. I came with a mike that you place where you would listen and hit the button. It will automatically adjust each speaker. It works OK with odd speakers. You may check the specs and see if yours has the feature. Many do, but particularly if bought second hand, the mike gets lost. Sony might be able to help you get another.

Good listening
Bruce

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