diff --git a/TTS/tts/configs/fast_pitch_config.py b/TTS/tts/configs/fast_pitch_config.py
index 668ea227..8f063102 100644
--- a/TTS/tts/configs/fast_pitch_config.py
+++ b/TTS/tts/configs/fast_pitch_config.py
@@ -11,7 +11,7 @@ class FastPitchConfig(BaseTTSConfig):
 
     Example:
 
-        >>> from TTS.tts.configs import FastPitchConfig
+        >>> from TTS.tts.configs.fast_pitch_config import FastPitchConfig
         >>> config = FastPitchConfig()
 
     Args:
@@ -30,6 +30,10 @@ class FastPitchConfig(BaseTTSConfig):
             Activation Normalization that pre-computes normalization stats at the beginning and use the same values
             for the rest. Defaults to 10.
 
+        speakers_file (str):
+            Path to the file containing the list of speakers. Needed at inference for loading matching speaker ids to
+            speaker names. Defaults to `None`.
+
         use_speaker_embedding (bool):
             enable / disable using speaker embeddings for multi-speaker models. If set True, the model is
             in the multi-speaker mode. Defaults to False.
@@ -105,6 +109,8 @@ class FastPitchConfig(BaseTTSConfig):
     model_args: ForwardTTSArgs = ForwardTTSArgs()
 
     # multi-speaker settings
+    num_speakers: int = 0
+    speakers_file: str = None
     use_speaker_embedding: bool = False
     use_d_vector_file: bool = False
     d_vector_file: str = False
@@ -149,3 +155,22 @@ class FastPitchConfig(BaseTTSConfig):
             "Prior to November 22, 1963.",
         ]
     )
+
+    def __post_init__(self):
+        # Pass multi-speaker parameters to the model args as `model.init_multispeaker()` looks for it there.
+        if self.num_speakers > 0:
+            self.model_args.num_speakers = self.num_speakers
+
+        # speaker embedding settings
+        if self.use_speaker_embedding:
+            self.model_args.use_speaker_embedding = True
+        if self.speakers_file:
+            self.model_args.speakers_file = self.speakers_file
+
+        # d-vector settings
+        if self.use_d_vector_file:
+            self.model_args.use_d_vector_file = True
+        if self.d_vector_dim is not None and self.d_vector_dim > 0:
+            self.model_args.d_vector_dim = self.d_vector_dim
+        if self.d_vector_file:
+            self.model_args.d_vector_file = self.d_vector_file
diff --git a/TTS/tts/configs/fast_speech_config.py b/TTS/tts/configs/fast_speech_config.py
index bba47bb3..682a69bb 100644
--- a/TTS/tts/configs/fast_speech_config.py
+++ b/TTS/tts/configs/fast_speech_config.py
@@ -30,6 +30,11 @@ class FastSpeechConfig(BaseTTSConfig):
             Activation Normalization that pre-computes normalization stats at the beginning and use the same values
             for the rest. Defaults to 10.
 
+        speakers_file (str):
+            Path to the file containing the list of speakers. Needed at inference for loading matching speaker ids to
+            speaker names. Defaults to `None`.
+
+
         use_speaker_embedding (bool):
             enable / disable using speaker embeddings for multi-speaker models. If set True, the model is
             in the multi-speaker mode. Defaults to False.
@@ -105,6 +110,7 @@ class FastSpeechConfig(BaseTTSConfig):
     model_args: ForwardTTSArgs = ForwardTTSArgs(use_pitch=False)
 
     # multi-speaker settings
+    speakers_file: str = None
     use_speaker_embedding: bool = False
     use_d_vector_file: bool = False
     d_vector_file: str = False
@@ -149,3 +155,22 @@ class FastSpeechConfig(BaseTTSConfig):
             "Prior to November 22, 1963.",
         ]
     )
+
+    def __post_init__(self):
+        # Pass multi-speaker parameters to the model args as `model.init_multispeaker()` looks for it there.
+        if self.num_speakers > 0:
+            self.model_args.num_speakers = self.num_speakers
+
+        # speaker embedding settings
+        if self.use_speaker_embedding:
+            self.model_args.use_speaker_embedding = True
+        if self.speakers_file:
+            self.model_args.speakers_file = self.speakers_file
+
+        # d-vector settings
+        if self.use_d_vector_file:
+            self.model_args.use_d_vector_file = True
+        if self.d_vector_dim is not None and self.d_vector_dim > 0:
+            self.model_args.d_vector_dim = self.d_vector_dim
+        if self.d_vector_file:
+            self.model_args.d_vector_file = self.d_vector_file
diff --git a/TTS/tts/configs/speedy_speech_config.py b/TTS/tts/configs/speedy_speech_config.py
index ba561c89..6007b741 100644
--- a/TTS/tts/configs/speedy_speech_config.py
+++ b/TTS/tts/configs/speedy_speech_config.py
@@ -1,8 +1,8 @@
 from dataclasses import dataclass, field
 from typing import List
 
-from TTS.tts.configs.shared_configs import BaseTTSConfig
 from TTS.tts.models.forward_tts import ForwardTTSArgs
+from TTS.tts.configs.shared_configs import BaseTTSConfig
 
 
 @dataclass
@@ -30,6 +30,10 @@ class SpeedySpeechConfig(BaseTTSConfig):
             Activation Normalization that pre-computes normalization stats at the beginning and use the same values
             for the rest. Defaults to 10.
 
+        speakers_file (str):
+            Path to the file containing the list of speakers. Needed at inference for loading matching speaker ids to
+            speaker names. Defaults to `None`.
+
         use_speaker_embedding (bool):
             enable / disable using speaker embeddings for multi-speaker models. If set True, the model is
             in the multi-speaker mode. Defaults to False.
@@ -117,12 +121,13 @@ class SpeedySpeechConfig(BaseTTSConfig):
         },
         out_channels=80,
         hidden_channels=128,
-        num_speakers=0,
         positional_encoding=True,
         detach_duration_predictor=True,
     )
 
     # multi-speaker settings
+    num_speakers: int = 0
+    speakers_file: str = None
     use_speaker_embedding: bool = False
     use_d_vector_file: bool = False
     d_vector_file: str = False
@@ -166,3 +171,22 @@ class SpeedySpeechConfig(BaseTTSConfig):
             "Prior to November 22, 1963.",
         ]
     )
+
+    def __post_init__(self):
+        # Pass multi-speaker parameters to the model args as `model.init_multispeaker()` looks for it there.
+        if self.num_speakers > 0:
+            self.model_args.num_speakers = self.num_speakers
+
+        # speaker embedding settings
+        if self.use_speaker_embedding:
+            self.model_args.use_speaker_embedding = True
+        if self.speakers_file:
+            self.model_args.speakers_file = self.speakers_file
+
+        # d-vector settings
+        if self.use_d_vector_file:
+            self.model_args.use_d_vector_file = True
+        if self.d_vector_dim is not None and self.d_vector_dim > 0:
+            self.model_args.d_vector_dim = self.d_vector_dim
+        if self.d_vector_file:
+            self.model_args.d_vector_file = self.d_vector_file