Benchmark runs both XLR and RCA outputs at the same time. You can use one of those to the subs and the other to your amp. You can also go in and adjust the voltage of the XLR with the pads to match the RCA voltage if you need to use an XLR to RCA adapter. It is clear in the manual how to adjust them
Injecting one sub to Benchmark system…
Noob here and just hooked up my new Benchmark AHB2 and DAC3 HGC with pair of Totem1 bookshelf speakers.
I have a Velodyne SPL-R series subwoofer and would like to connect this. I’m seeing a lot of varied advice on the web on how to do this and thought I would come here for better advice.
Not even sure if the sub would connect to the preamp or the amp….any suggestions?
cheers
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@james633 is absolutely correct, and I’ve been using this exact configuration for quite some time with dual passive TV-12 Ultra drivers. Those darn XLR Attenuator pads / jumpers I have moved around more then I’d care to admit. It has been a while though, but by golly, it’s fun to play. :-) |
The idea behind running the headphone out for the sub is that having the pre-outs running two sets of wires at the same time and into 2 amplifiers at the same time is harder for the dac to power than a single set of wires and amp. Running from the headphone amp to the sub would, I think, reduce that because the headphone amp is its own separate amplification from the preouts. And it's something you can try for the cost of a $5 headphone jack to rca adapter. IMO it's a mistake to not try a regular preamp with the Benchmarks. While there may be a tiny loss of transparency I found a preamp was overall a pretty big improvement. |
Your last paragraph is perfection! You’ve now mentioned “twice” (or has it been once) using headphone output. Funny, for I’ve also done such configuration on an older Vintage piece of gear which had no pre-out. Receiver > Amp. What can I say other than I love my tone controls, and desired to still utilize them with the added headroom. Likely somewhat of a impedance mismatch but hey, it worked. ;-) |
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