Tingc222
100+ Head-Fier
- Joined
- Nov 23, 2009
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Hi All!
I'm in the process of building a speaker terminal adapter for the HE-6 (~50-65Ohm, purely resistive). Here's what I've gathered so far.
This is for anticipated use with 25 to 75 W per channel speaker amps (with one tube amp at 75W/ch) with output impedance of approximately 0.5Ohm.
Per channel:
Source + -------------- R1 ----------------------------------- HE-6 +
|
|
R2
|
|
Source - ------------------------------------------------------ HE-6 -
This is based on L-pad design. Simple impedance match calculation revealed that an ~10 Ohm load can be achieved with R1 and R2 = 5 Ohm. I should also see some signal attenuation with this, likely on the order of a few db.
I went ahead and ordered 4 non-inductive audio grade resistors at 5Ohm, 10W each for this purpose.
I'd like to use this primarily to protect my tube amps which may not do well with a native ~65ohm load that the HE-6 provides.
Need I worry about anything? Did I overlook something?
Thanks!!
I'm in the process of building a speaker terminal adapter for the HE-6 (~50-65Ohm, purely resistive). Here's what I've gathered so far.
This is for anticipated use with 25 to 75 W per channel speaker amps (with one tube amp at 75W/ch) with output impedance of approximately 0.5Ohm.
Per channel:
Source + -------------- R1 ----------------------------------- HE-6 +
|
|
R2
|
|
Source - ------------------------------------------------------ HE-6 -
This is based on L-pad design. Simple impedance match calculation revealed that an ~10 Ohm load can be achieved with R1 and R2 = 5 Ohm. I should also see some signal attenuation with this, likely on the order of a few db.
I went ahead and ordered 4 non-inductive audio grade resistors at 5Ohm, 10W each for this purpose.
I'd like to use this primarily to protect my tube amps which may not do well with a native ~65ohm load that the HE-6 provides.
Need I worry about anything? Did I overlook something?
Thanks!!