Hi Friends,
This thread will be about my Altec Lansing A7 "Voice of the Theater" speaker build. This was a speaker produced by Altec Lansing Corporation since 1950s and upto late 80s with minor changes over the years. Chances are everyone would have heard this speaker in a Cinema Hall at some time or other as most theaters around the world including India used these. This is the smallest speaker in Altec's Voice of the Theater range and I have made some tweaks for Hi-Fi application as per the Sound Practices Article http://home.earthlink.net/~jmarkwart/sitebuildercontent/sitebuilderfiles/spaltec.pdf.
I am really thankful to Rajiv and Anilva for their constant support and encouragement and also Abhi (Dr.Bass) for his great company and encouragement while sourcing HF drivers in Singapore. Must also mention Soundsgreat for patiently answering my technical questions regarding crossover and also loaning me his 20uF capacitors.
The build is only 80% complete, still need to build a crossover and also need to get it stained (polishing). Currently, I am using only a blocking capacitor on the HF unit for tweeter protection. The Altec 8 ohm 802-8G HF compression drivers with the Altec 811-b horns and are atleast 6 to 10dB more sensitive than the 16ohm LF drivers (both are over 100dB sensitive), so need to attenuate the highs a bit. Currently I am running the LF driver full range with a more powerful amp compared to the HF driver, so this has sort of attenuated the highs a little.
Plan is to drive these with a tube amp when funds permit
I have posted a detailed writeup of this on my DIY website here:
www.DIYable.net • View topic - Altec Lansing A7 "Voice of the Theater" Build
Here are some pics:
From Listening Position:
My new Audio rack, got 2 identical ones made:
Please let me know your thoughts
This thread will be about my Altec Lansing A7 "Voice of the Theater" speaker build. This was a speaker produced by Altec Lansing Corporation since 1950s and upto late 80s with minor changes over the years. Chances are everyone would have heard this speaker in a Cinema Hall at some time or other as most theaters around the world including India used these. This is the smallest speaker in Altec's Voice of the Theater range and I have made some tweaks for Hi-Fi application as per the Sound Practices Article http://home.earthlink.net/~jmarkwart/sitebuildercontent/sitebuilderfiles/spaltec.pdf.
I am really thankful to Rajiv and Anilva for their constant support and encouragement and also Abhi (Dr.Bass) for his great company and encouragement while sourcing HF drivers in Singapore. Must also mention Soundsgreat for patiently answering my technical questions regarding crossover and also loaning me his 20uF capacitors.
The build is only 80% complete, still need to build a crossover and also need to get it stained (polishing). Currently, I am using only a blocking capacitor on the HF unit for tweeter protection. The Altec 8 ohm 802-8G HF compression drivers with the Altec 811-b horns and are atleast 6 to 10dB more sensitive than the 16ohm LF drivers (both are over 100dB sensitive), so need to attenuate the highs a bit. Currently I am running the LF driver full range with a more powerful amp compared to the HF driver, so this has sort of attenuated the highs a little.
Plan is to drive these with a tube amp when funds permit
I have posted a detailed writeup of this on my DIY website here:
www.DIYable.net • View topic - Altec Lansing A7 "Voice of the Theater" Build
Here are some pics:
From Listening Position:
My new Audio rack, got 2 identical ones made:
Please let me know your thoughts