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2 Way Bi-Amped Mono wiring to aux plug
2 Way Bi-Amped Mono wiring to aux plug
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Old 25th December 2017, 03:54 PM   #1
Xappys is offline Xappys  United Kingdom
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Default 2 Way Bi-Amped Mono wiring to aux plug

Setup: One TDA8932 for tweeter, another TDA8932 for woofer. Will play from: MP3, Smartphone.
I would like to hear your opinion on which of the 4 options below is the best at giving me the most volume and still being safe?

•Connect tweeter's amp to 3.5mm plug as R channel (ring), woofer's as L channel (tip)
•Connect both to L channel (tip of the 3.5mm jack)
•Bridge 3.5mm plug's L and R pins (tip and ring) without resistors
•Bridge 3.5mm plug's L and R pins (tip and ring) with summing resistors of 1K or similar (Will the volume drop?)
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Old 25th December 2017, 10:20 PM   #2
MAAC0 is offline MAAC0  Portugal
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First question... What are You trying to build ?
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Old 27th December 2017, 10:08 AM   #3
Xappys is offline Xappys  United Kingdom
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A portable battery-powered speaker with one Dayton DSA135-8 woofer and one Dayton ND20FB-4 tweeter with passive crossovers. I'm nearly finished actually. Thanks.
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Old 27th December 2017, 10:13 AM   #4
scottjoplin is offline scottjoplin  Wales
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The last option is best
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Old 27th December 2017, 10:28 AM   #5
Xappys is offline Xappys  United Kingdom
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Quote:
Originally Posted by scottjoplin View Post
The last option is best
Thanks. Do you believe the volume won't drop by 6db after doing this?
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Old 27th December 2017, 10:35 AM   #6
scottjoplin is offline scottjoplin  Wales
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The mixing resistors will act as potential dividers in conjunction with the input impedance of the amplifier which is probably much higher, so the attenuation will be minimal. You must use mixing resistors
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Old 27th December 2017, 01:44 PM   #7
Xappys is offline Xappys  United Kingdom
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Thank you, I'll do so. Build details and soundest in upcoming days!
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Old 31st December 2017, 12:55 AM   #8
Xappys is offline Xappys  United Kingdom
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Everything turned out to be fine - I even got more volume (approx at least 6db) by summing stereo to mono using 470 ohm resistors as compared to only connecting one channel. I won't finish it tomorrow, but it shall be done until 6th of January.
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