So if you guys remember a thread that I made recently called Breaking a Hafler DH-101 into Sections? Well I did some stuff based off what I learned.
http://www.diyaudio.com/forums/solid-state/228517-breaking-hafler-dh-101-into-sections.html
So tonight I did something. Didn't work. Let me explain. My amp is a DH-220. I use a powered subwoofer with my unit. So I clipped the following wires from the rca jack connectors (both left and right)
TUNER
FROM.
I connected the TUNER jacks straight to eyelets 4L and 4R. I was told (and schematic shows it) that these are line level jacks. So I can bypass the crappy source selector switches and go strain into the line level input. Now how would I connect a subwoofer with out an adapter? Well I took another wire and connected the TUNER jacks to the FROM jacks. So FROM and TUNER are connected in parallel. So I could connect the output of my iPod to the input of the preamp and the sub plate amp.
Thats ALL I did. I didn't disconnect any other wires. I noticed there are resistors R30 and R31 that lower the source line level to the tape outputs (sub used to be connected there and it worked) but I could plug my iPod into the sub directly and use the sub's volume control with out an issue, so I figured those resistors aren't needed.
Were R32, R33, and R34 suppose to be the reason it doesn't work? I connected this all up just a few minutes ago and got a LOUD noise (static, not hum) through the amp. LOUD as in full volume loud. I disconnected the sub incase it could be a grounding issue, and no dice.
I have pictures to show how I did this.
I still want the tone control switch in the circuit so I can switch them on and off.
I didn't disconnect anything else besides mentioned above, but cut the path shorter.
I did this because even cleaning the switches with deoxit only gets them good for 6 or so months. So I said screw that, I'll bypass them.
I can always buy a RadioShack source selector if needed.
Any ideas. Kinda annoyed at my self. Only preamp I have.
The video: http://www.youtube.com/watch?v=4ROgsjolzvc
http://www.diyaudio.com/forums/solid-state/228517-breaking-hafler-dh-101-into-sections.html
So tonight I did something. Didn't work. Let me explain. My amp is a DH-220. I use a powered subwoofer with my unit. So I clipped the following wires from the rca jack connectors (both left and right)
TUNER
FROM.
I connected the TUNER jacks straight to eyelets 4L and 4R. I was told (and schematic shows it) that these are line level jacks. So I can bypass the crappy source selector switches and go strain into the line level input. Now how would I connect a subwoofer with out an adapter? Well I took another wire and connected the TUNER jacks to the FROM jacks. So FROM and TUNER are connected in parallel. So I could connect the output of my iPod to the input of the preamp and the sub plate amp.
Thats ALL I did. I didn't disconnect any other wires. I noticed there are resistors R30 and R31 that lower the source line level to the tape outputs (sub used to be connected there and it worked) but I could plug my iPod into the sub directly and use the sub's volume control with out an issue, so I figured those resistors aren't needed.
Were R32, R33, and R34 suppose to be the reason it doesn't work? I connected this all up just a few minutes ago and got a LOUD noise (static, not hum) through the amp. LOUD as in full volume loud. I disconnected the sub incase it could be a grounding issue, and no dice.
I have pictures to show how I did this.
I still want the tone control switch in the circuit so I can switch them on and off.
I didn't disconnect anything else besides mentioned above, but cut the path shorter.
I did this because even cleaning the switches with deoxit only gets them good for 6 or so months. So I said screw that, I'll bypass them.
I can always buy a RadioShack source selector if needed.
Any ideas. Kinda annoyed at my self. Only preamp I have.
The video: http://www.youtube.com/watch?v=4ROgsjolzvc
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