8
Speaker Bridging
Your Tube Driver BLUE is capable of being bridged into a 4-Ohm
(minimum) mono output without switches or bridging modules.
You can achieve this mono channel by using the left negative (-)
speaker connection and the right positive (+) speaker connection.
Being certain you do not operate your Tube Driver BLUE at less
than the minimum recommended speaker impedances will
produce better sound and musical dynamics.
Important Note:
Total bridged impedance of less than 4 Ohms
may trigger protection circuitry engagement and may eventually
damage your amplifier.
Mixed Mono Output
You can operate the 2 channels in both stereo and bridged mono
at the same time (3 channel or tri-mode) by using highpass filters
(bass blockers) and bandpass (midrange only) on the higher
frequency stereo channels. A lowpass filter (coil) is used on the
mono connection to the sub woofers. The frequencies of the
chosen highpass and lowpass filters must not overlap (allow the
mids and the highs to play the same frequencies of music as the
subs) or the impedance the amplifier 'sees' at those frequencies
will be cut in half. This could cause the amplifier to engage
protection circuitry.
