Connectivity Report: McIntosh Quad Balanced Monoblocks

MC601_AngleThere exist a number of special connectivity cases that require a departure from the norm in connecting a REL using our vaunted high level connection to certain amplifiers. We will attempt to identify and solve certain unusual connection schemes.

This installment deals with connecting REL subs to McIntosh Labs Quad Balanced Monoblocks: McIntosh Quad Balanced Monoblocks (1.2KW/MC601/MC2301/MC301), remember to always use 2 REL subs for mono blocks—1 per channel. When doing so, please combine red and yellow leads together to form a single composite “+” or “hot” conductor as shown in the diagram below. Do not connect the black wire to the output terminals. Instead connect it to a chassis bolt as shown below.

Screen Shot 2016-05-23 at 2.38.49 PMWe do not recommend use of a single REL with ANY brand of monoblock amplifier as it is possible to observe slight channel-to-channel dc offset that can result in mild oscillation. For any monoblock, we recommend use of stereo pairs of the appropriate model of REL sub. If you are unsure, please call REL directly at 1(510) 990-6005.


McIntosh Labs and Quad Balanced are trademarks of McIintosh Labs/World of McIntosh. Any reference to these trademarks in this communication is strictly in the educational interests of the high end audio industry and is limited to furthering the safe use of its products when used with partnering REL subs.

Posted on May 25th, 2016 in Connectivity, News